Journal name: Agronomy journal / Subject: Georgia / Subject term: Georgia

1. Winter legume cover effects on yields of biomass‐sorghum and cotton in Georgia

Author:: Anderson William F.; William Anderson; Joseph Edward Knoll; Dawn Olson; Brian T. Scully; Timothy C. Strickland; Theodore M. Webster
Source:: Agronomy journal 2022 v.114 no.2 pp. 1298-1310
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; Lupinus angustifolius; Pisum sativum subsp. sativum var. arvense; Secale cereale; Sorghum bicolor; Trifolium incarnatum; Vicia; agronomy; biomass; faba beans; peas; rye; seed cotton; soil; Georgia
Abstract:: ... Among the many ecosystems services of winter covers, winter legumes have an advantage over winter grain covers by fixing N that may be used by subsequent crops. A 5‐yr study was conducted to compare the biomass yields of five leguminous winter cover crops [Austrian winter pea (Pisum sativum L.), fava bean (Vicia fava L.), narrow‐leaf lupin (Lupinus angustifolius L.), cahaba vetch (Vicia spp.), cri ...
Handle:: 10113/7736404
DOI:: 10.1002/agj2.21018
: https://doi.org/10.1002/agj2.21018

2. Effect of post shelling storage environments on seed germination and vigor of peanut

Author:: Caleb C. Weaver; W. Scott Monfort; Timothy L. Grey; Cristiane Pilon; R. Scott Tubbs
Source:: Agronomy journal 2021 v.113 no.5 pp. 4116-4131
ISSN:: 0002-1962
Subject:: Arachis hypogaea; agronomy; cultivars; heat sums; peanuts; relative humidity; seed germination; seed quality; viability; vigor; Georgia
Abstract:: ... Proper storage of peanut(Arachis hypogaea L.) seed is essential for maintaining viability to ensure adequate plant stands are achieved upon planting. Experiments conducted in Georgia from 2017 to 2018 evaluated cultivar by storage condition by sampling date effects on three peanut cultivars. The effects of varying environments, with respect to different temperatures and humidity, on peanut seed vi ...
DOI:: 10.1002/agj2.20795
: https://doi.org/10.1002/agj2.20795

3. Moran eigenvector filtering of multi-year yield data with application to zone development

Author:: Long Daniel S.; Griffith Daniel A.; Kvien Craig V.; Clay David E.
Source:: Agronomy journal 2020 v.2021 no. pp. -
ISSN:: 0002-1962
Subject:: agronomy; arid lands; corn; crop yield; irrigated farming; landscape position; models; peanuts; precision agriculture; soil types; soybeans; time series analysis; variance; Georgia; South Dakota
Abstract:: ... A time-series of yield monitor data may be used to identify field areas of consistently low or high yield to serve as management zones (MZ) for variable-rate application. However, transient factors that affect yield in one year, but not every year, detract from this approach. The objective of this study was to examine if Moran eigenvector spatial filtering (MESF) could provide useful information f ...
Handle:: 10113/7709351
DOI:: 10.1002/agg2.20140
: https://doi.org/10.1002/agg2.20140

4. Tillage and Irrigation Impact on Early and Late Maturing Cotton Cultivars

Author:: Seth A. Byrd; Guy D. Collins; Ronnie M. Barentine; John L. Snider; A. Stanley Culpepper; Phillip M. Roberts; Wesley M. Porter; Jared R. Whitaker
Source:: Agronomy journal 2019 v.111 no.4 pp. 1620-1633
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; Secale cereale; agronomy; conventional tillage; cotton; cover crops; cultivars; growth and development; rain; rye; soil; strip tillage; Austria; Georgia
Abstract:: ... Concerns surrounding agricultural water use have increased interest in investigating more efficient cotton (Gossypium hirsutum L.) production practices. A study was conducted to determine potential water savings from using a conservation tillage system employing a cereal rye (Secale cereale L.) cover crop. The performance of early and late maturing cotton cultivars was assessed in two tillage syst ...
DOI:: 10.2134/agronj2017.11.0643
: https://doi.org/10.2134/agronj2017.11.0643

5. Yield and Nutrient Dynamics in Conventional and Organic Sweet Corn Production Systems

Author:: L.K. Woodruff; M.Y. Habteselassie; J.M. Norton; G.E. Boyhan; M.L. Cabrera
Source:: Agronomy journal 2019 v.111 no.5 pp. 2395-2403
ISSN:: 0002-1962
Subject:: Trifolium incarnatum; Zea mays; agronomy; ammonium sulfate; blood meal; corn stover; cover crops; crop yield; mineralization; nitrate nitrogen; nutrient availability; poultry manure; rain; soil; sweetcorn; toxicity; Georgia
Abstract:: ... Poultry litter is abundant in Georgia and is an inexpensive N source in an organic system. However, poultry litter characteristics are variable and nutrient availability for crops, along with potential accumulation of nutrients or metals in soils, depends on several litter and soil factors, necessitating site-specific studies. Our objective was to determine if organic N management with poultry lit ...
DOI:: 10.2134/agronj2018.09.0625
: https://doi.org/10.2134/agronj2018.09.0625

6. Soil-Test Biological Activity with the Flush of CO2: IV. Fall-Stockpiled Tall Fescue Yield Response to Applied Nitrogen

Author:: Alan J. Franzluebbers; Smriti Pehim-Limbu; Matt H. Poore
Source:: Agronomy journal 2018 v.110 no.5 pp. 2033-2049
ISSN:: 0002-1962
Subject:: Festuca arundinacea subsp. arundinacea; bioactive properties; carbon dioxide; cattle husbandry; environmental sustainability; forage; forage yield; hay; magnesium; mineralization; nitrogen; nitrogen fertilizers; pastures; soil; soil carbon; winter; Georgia; North Carolina; Virginia; West Virginia
Abstract:: ... Fall stockpiling of tall fescue (Lolium arundinaceum) in the southeastern United States is promoted as an ecologically favorable cattle management approach to avoid the financial and environmental burdens of winter hay feeding. We hypothesized that soil N mineralization should be an important factor controlling forage yield response to N fertilizer. We conducted 55 N fertilizer trials in combinati ...
Handle:: 10113/6471006
DOI:: 10.2134/agronj2018.03.0146
: https://doi.org/10.2134/agronj2018.03.0146

7. Strip Tillage Implements for Single and Twin Row Peanut

Author:: Kipling S. Balkcom; R. Scott Tubbs; Kris B. Balkcom
Source:: Agronomy journal 2018 v.110 no.3 pp. 1136-1146
ISSN:: 0002-1962
Subject:: Arachis hypogaea; Secale cereale; cover crops; crop yield; fallow; peanuts; production costs; row spacing; rye; seeds; soil degradation; soil physical properties; soil-plant interactions; strip tillage; tillage implements; Alabama; Georgia
Abstract:: ... Soil degradation and rising production costs have prompted grower interest in conservation tillage with cover crops for peanut (Arachis hypogaea L.). Our objective was to evaluate single and twin row peanut production across three different strip tillage implements (KMC, Orthman, Unverferth) with and without a rye (Secale cereale L.) cover crop in Headland, AL, and Tifton, GA, during 2012 to 2014. ...
Handle:: 10113/6579861
DOI:: 10.2134/agronj2017.09.0565
: https://doi.org/10.2134/agronj2017.09.0565

8. Delineating Soybean Maturity Groups across the United States

Author:: Spyridon Mourtzinis; Shawn P. Conley
Source:: Agronomy journal 2017 v.109 no.4 pp. 1397-1403
ISSN:: 0002-1962
Subject:: Glycine max; agronomy; latitude; soybeans; temperature; Georgia; North Dakota; South Carolina
Abstract:: ... Photoperiod and in-season temperature are the primary factors that dictate the region where a soybean [Glycine max (L.) Merr.] variety is adapted. The first study that defined hypothetical maturity groups (MGs) zones across the US was 45 yr ago, and the most recent used data up to 2003. Although, photoperiod remains constant, climatic conditions, management practices, and soybean genetics have cha ...
DOI:: 10.2134/agronj2016.10.0581
: https://doi.org/10.2134/agronj2016.10.0581

9. Optimizing Agronomic Practices for Clover Persistence and Corn Yield in a White Clover–Corn Living Mulch System

Author:: Z. P. Sanders; J. S. Andrews; U. K. Saha; W. Vencill; R. D. Lee; N. S. Hill
Source:: Agronomy journal 2017 v.109 no.5 pp. 2025-2032
ISSN:: 0002-1962
Subject:: Trifolium repens; Zea mays; agronomy; biomass; corn; grain yield; herbicides; legumes; nitrogen; population density; regrowth; soil; Georgia
Abstract:: ... The area dedicated to corn (Zea mays L.) production increased 50% in the southeastern United States between 2006 and 2016, but producers need to find production systems that mitigate environmental impacts on erosive soils. Utilizing a perennial legume in a living mulch system may help stabilize the soil. The objectives of this study were to identify the most successful herbicide banding pattern (2 ...
DOI:: 10.2134/agronj2017.02.0106
: https://doi.org/10.2134/agronj2017.02.0106

10. Predicting Heat Stress in Cotton Using Probabilistic Canopy Temperature Forecasts

Author:: Emily H. Christ; Peter J. Webster; John L. Snider; Violeta E. Toma; Derrick M. Oosterhuis; Daryl R. Chastain
Source:: Agronomy journal 2016 v.108 no.5 pp. 1981-1991
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; air temperature; canopy; cotton; crop failure; crop yield; economic analysis; growers; heat stress; humidity; plant stress; prediction; probabilistic models; regression analysis; solar radiation; weather forecasting; wind speed; Georgia
Abstract:: ... Heat stress can reduce crop yield or even cause total crop failure. The ability to predict heat stress in advance would allow growers time to implement protective measures, helping to avoid such losses. This study presents a strategy for producing probabilistic heat stress forecasts for well-watered cotton (Gossypium hirsutum L.) in the Camilla, GA, region. Multiple linear regression was used to d ...
DOI:: 10.2134/agronj2015.0576
: https://doi.org/10.2134/agronj2015.0576

11. El Niño–Southern Oscillation Effects on Winter Wheat in the Southeastern United States

Author:: Prem Woli; Brenda V. Ortiz; Jerry Johnson; Gerrit Hoogenboom
Source:: Agronomy journal 2015 v.107 no.6 pp. 2193-2204
ISSN:: 0002-1962
Subject:: El Nino; La Nina; Triticum aestivum; agronomy; climate; cultivars; early development; head; latitude; winter wheat; Georgia
Abstract:: ... The winter wheat (Triticum aestivum L.) growing season in the southeastern United States occurs during the period when the climate of this region is strongly influenced by El Niño–Southern Oscillation (ENSO). The ENSO-based interannual climate variability might influence growth, maturity, and yield of winter wheat. Because different maturity groups of wheat cultivars head at different times of the ...
DOI:: 10.2134/agronj14.0651
: https://doi.org/10.2134/agronj14.0651

12. Native Plant Establishment on Georgia Roadsides

Author:: Christopher R. Johnston; Patrick E. McCullough; Donn G. Shilling
Source:: Agronomy journal 2015 v.107 no.3 pp. 990-996
ISSN:: 0002-1962
Subject:: Asclepias incarnata; Coreopsis; Monarda fistulosa; Rudbeckia hirta; Sorghastrum nutans; agronomy; forbs; indigenous species; plant establishment; roadsides; sowing; spring; Georgia
Abstract:: ... Invasive weeds are a costly problem on Georgia roadsides due to limited management options and a lack of competition from roadside grasses. The introduction of species native to Georgia could reduce maintenance costs and suppress invasive weeds on roadsides, however, limited research has been conducted with these species in this environment. Field experiments were conducted in Georgia to evaluate ...
DOI:: 10.2134/agronj14.0555
: https://doi.org/10.2134/agronj14.0555

13. Acetyl-CoA Carboxylase Herbicide Tolerance in Bermudagrass

Author:: Austin L. Grimshaw; Brian M. Schwartz; Timothy L. Grey; Patrick E. McCullough; Paul L. Raymer; Theodore M. Webster; A.R. Kowalewski; Trent M. Tate; Wayne A. Parrott
Source:: Agronomy journal 2014 v.106 no.3 pp. 925-930
ISSN:: 0002-1962
Subject:: Cynodon dactylon; acetyl-CoA carboxylase; application rate; clethodim; field experimentation; fluazifop; genotype; greenhouses; herbicide resistance; lawns and turf; progeny; propionic acid; screening; sethoxydim; spring; turf grasses; Georgia
Abstract:: ... Contamination of newly planted bermudagrass (Cynodon spp.) varieties by undesirable off-type bermudagrass genotypes is an ever increasing concern for turf managers because selective control options are limited. In 2009, a sethoxydim {2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one} tolerant bermudagrass genotype (93-175) was identified during herbicide screening at th ...
DOI:: 10.2134/agronj13.0423
: https://doi.org/10.2134/agronj13.0423

14. Effect of Cultivar, Irrigation, and Soil Calcium on Runner Peanut Response to Gypsum

Author:: J. A. Howe; R. J. Florence; G. Harris; E. van Santen; J. P. Beasley; J. P. Bostick; K. B. Balkcom
Source:: Agronomy journal 2012 v.104 no.5 pp. 1312-1320
ISSN:: 0002-1962
Subject:: Arachis hypogaea; calcium; cultivars; gypsum; irrigation; peanuts; seed germination; seed quality; seeds; soil; Alabama; Georgia
Abstract:: ... Calcium is often limiting to peanut (Arachis hypogaea L.) yield, grade, and germination in the southeastern United States. The response of large-seeded (Georgia-06G) and small-seeded (Georgia Green) runner peanuts to gypsum applications was evaluated in 14 tests in southern Alabama and Georgia. Experiments were conducted in a randomized complete block design with four replications of gypsum applic ...
DOI:: 10.2134/agronj2012.0115
: https://doi.org/10.2134/agronj2012.0115

15. Forecasting Cotton Yield in the Southeastern United States using Coupled Global Circulation Models

Author:: Guillermo A. Baigorria; Muthuvel Chelliah; Kingtse C. Mo; Consuelo C. Romero; James W. Jones; James J. O'Brien; R. Wayne Higgins
Source:: Agronomy journal 2010 v.102 no.1 pp. 187-196
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; cotton; fiber crops; crop yield; General Circulation Models; prediction; crop models; data analysis; correlation; calibration; model validation; rain; vegetative growth; flowering; air temperature; harvest date; Alabama; Georgia
Abstract:: ... We developed methods of forecasting cotton (Gossypium hirsutum L. var. hirsutum) yields at a county level 3 mo before harvest for the states of Alabama and Georgia. Cotton yield historical records for 57 counties were obtained from NASS and detrended using a low-pass spectral filter. A Canonical Correlation Analysis regression-based model was annually recalibrated to incorporate the year-by-year a ...
DOI:: 10.2134/agronj2009.0201
: https://doi.org/10.2134/agronj2009.0201

16. Impact of Planting Date and Hybrid on Early Growth of Sweet Corn

Author:: Axel Garcia y Garcia; Larry C. Guerra; Gerrit Hoogenboom
Source:: Agronomy journal 2009 v.101 no.1 pp. 193-200
ISSN:: 0002-1962
Subject:: harvest date; planting date; cultivars; Zea mays; hybrids; plant growth; phenology; leaf area index; dry matter accumulation; height; environmental factors; dryland farming; sweetcorn; aerial parts; seedling emergence; homozygosity; heat sums; Georgia
Abstract:: ... Sweet corn (Zea mays L. var. rugosa) is a warm-weather crop that is grown in most of the United States. Normally, it is planted over an extended planting window to provide a continuous supply for the fresh market. However, this planting window exposes the crop to various stresses and weather risks. The objective of this study was to determine the effect of planting date on early growth of sweet co ...
DOI:: 10.2134/agronj2007.0393
: https://doi.org/10.2134/agronj2007.0393

17. Yield and Plant Growth Response of Peanut to Midseason Forage Harvest

Author:: Ronald B. Sorensen; Russell C. Nuti; Christopher L. Butts
Source:: Agronomy journal 2009 v.101 no.5 pp. 1198-1203
ISSN:: 0002-1962
Subject:: temporal variation; harvest date; crop quality; peanuts; plant growth substances; farm income; forage legumes; hay; plant density; crop yield; frequency; Arachis hypogaea; Georgia
Abstract:: ... Harvesting of peanut (Arachis hypogaea L.) foliage during the growing season may increase farm revenue through the sale of peanut hay; however, it is unknown how the peanut plant will respond to forage removal with respect to plant characteristics, pod yield, quality, and revenue. This experiment was a randomized complete block design where peanut foliage was harvested or sprayed with a plant grow ...
Handle:: 10113/36476
DOI:: 10.2134/agronj2009.0047
: https://doi.org/10.2134/agronj2009.0047

18. Cotton Subsurface Drip and Overhead Irrigation Efficiency, Maturity, Yield, and Quality

Author:: Jared R. Whitaker; Glen L. Ritchie; Craig W. Bednarz; Cory I. Mills
Source:: Agronomy journal 2008 v.100 no.6 pp. 1763-1768
ISSN:: 0002-1962
Subject:: cotton; harvest date; soil water content; Gossypium hirsutum; water use efficiency; subsurface irrigation; sprinkler irrigation; crop yield; dryland farming; irrigation rates; field experimentation; irrigated farming; fiber quality; Georgia
Abstract:: ... Subsurface drip (SSD) is used as a water-efficient alternative to overhead irrigation in many crops. This study compared soil water, water use, crop maturity, lint yield, and fiber quality of cotton (Gossypium hirsutum L.) grown with SSD to cotton grown with overhead irrigation. Three experiments were conducted at two Georgia locations in 2004 and 2005. Treatments consisted of overhead irrigated, ...
DOI:: 10.2134/agronj2008.0036
: https://doi.org/10.2134/agronj2008.0036

19. Economic Comparison of Transgenic and Nontransgenic Cotton Production Systems in Georgia

Author:: P. Jost; D. Shurley; S. Culpepper; P. Roberts; R. Nichols; J. Reeves; S. Anthony
Source:: Agronomy journal 2008 v.100 no.1 pp. 42-51
ISSN:: 0002-1962
Subject:: cotton; variety trials; cultivars; profitability; Gossypium hirsutum; transgenic plants; cropping systems; crop yield; field experimentation; Georgia
Abstract:: ... Transgenic cotton (Gossypium hirsutum L.) cultivars produce lint and seed and their propriety traits provide part of the crop's insect management and/or enable use of broad-spectrum herbicides for weed management. The standard procedures for conducting official cultivar trials utilize common pest management across all cultivars; whereas the pest management options and their associated potential fo ...
Handle:: 10113/17545
DOI:: 10.2134/agronj2006.0259
: https://doi.org/10.2134/agronj2006.0259

20. Nitrogen Storage with Cover Crops and Nitrogen Fertilization in Tilled and Nontilled Soils

Author:: Upendra M. Sainju; Bharat P. Singh
Source:: Agronomy journal 2008 v.100 no.3 pp. 619-627
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; cotton; fiber crops; Sorghum bicolor; grain sorghum; grain crops; cover crops; Vicia villosa; Secale cereale; rye; crop management; nitrogen; soil fertility; nitrogen fertilizers; no-tillage; strip tillage; chiseling; dry matter accumulation; fertilizer rates; weeds; soil depth; Georgia
Abstract:: ... Improved crop and N management practices are needed to increase soil N storage so that N fertilization rate and the potential for N leaching can be reduced in tilled and nontilled soils. We examined the influence of cover crops and N fertilization rates on N inputs from cover crops, cotton (Gossypium hirsutum L.) and sorghum [Sorghum bicolor (L.) Moench] and soil total N (STN) content at the 0- to ...
Handle:: 10113/18483
DOI:: 10.2134/agronj2007.0236
: https://doi.org/10.2134/agronj2007.0236

21. No-Till Corn Productivity in a Southeastern United States Ultisol Amended with Poultry Litter

Author:: Dinku M. Endale; Harry H. Schomberg; Dwight S. Fisher; Michael B. Jenkins; Ron R. Sharpe; Miguel L. Cabrera
Source:: Agronomy journal 2008 v.100 no.5 pp. 1401-1408
ISSN:: 0002-1962
Subject:: Zea mays; corn; no-tillage; poultry manure; soil amendments; soil water content; dryland farming; dry matter accumulation; grain yield; conventional tillage; nitrogen fertilizers; ammonium nitrate; ammonium sulfate; cover crops; Secale cereale; rye; field experimentation; leaf area index; Georgia
Abstract:: ... Corn (Zea mays L.) producers in the southeastern United States must overcome soil and water limitations to take advantage of the expanding corn market. In this 2001 to 2005 study on a Cecil sandy loam (fine, kaolinitic, thermic Typic Kanhapludult) near Watkinsville, GA, we compared dry land corn biomass and yield under conventional tillage (CT) vs. no-tillage (NT) with ammonium nitrate or sulfate ...
Handle:: 10113/21609
DOI:: 10.2134/agronj2007.0401
: https://doi.org/10.2134/agronj2007.0401

22. Yield, Quality, and Fruit Distribution in Bollgard/Roundup Ready and Bollgard II/Roundup Ready Flex Cottons

Author:: Cory I. Mills; Craig W. Bednarz; Glen L. Ritchie; Jared R. Whitaker
Source:: Agronomy journal 2008 v.100 no.1 pp. 35-41
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; agronomic traits; agronomy; arid lands; canopy; cotton; deblossoming; fiber quality; glyphosate; irrigation; leaves; Georgia
Abstract:: ... New transgenic cotton (Gossypium hirsutum L.) technologies Bollgard II/Roundup Ready Flex (BGII/RRF) provide additional mechanisms for the cotton crop to retain early initiated fruiting structures positioned in the lower canopy. It may be possible, therefore, for early fruit retention to become too high with these new technologies resulting in early cutout and reduced yield. The objective of this ...
DOI:: 10.2134/agronj2006.0299
: https://doi.org/10.2134/agronj2006.0299

23. Accumulation and Crop Uptake of Soil Mineral Nitrogen as Influenced by Tillage, Cover Crops, and Nitrogen Fertilization

Author:: Upendra M. Sainju; Bharat P. Singh; Wayne F. Whitehead; Shirley Wang
Source:: Agronomy journal 2007 v.99 no.3 pp. 682-691
ISSN:: 0002-1962
Subject:: no-tillage; strip tillage; ammonium nitrogen; Gossypium hirsutum; nutrient uptake; nitrate nitrogen; losses from soil; soil fertility; temporal variation; crop residues; leaching; weeds; crop rotation; nitrogen fertilizers; cotton; fertilizer rates; chiseling; grain sorghum; cover crops; Sorghum bicolor; Georgia
Abstract:: ... Management practices may influence soil N levels due to crop uptake and leaching. We evaluated the effects of three tillage practices [no-till (NT), strip till (ST), and chisel till (CT)], four cover crops [hairy vetch (Vicia villosa Roth), rye (Secale cereale L.), vetch + rye biculture, and winter weeds or no cover crop], and three N fertilization rates (0, 60–65, and 120–130 kg N ha⁻¹) on NH₄–N ...
Handle:: 10113/11210
DOI:: 10.2134/agronj2006.0177
: https://doi.org/10.2134/agronj2006.0177

24. Potential for Using Sunn Hemp as a Source of Biomass and Nitrogen for the Piedmont and Coastal Plain Regions of the Southeastern USA

Author:: Harry H. Schomberg; Nicole L. Martini; Juan C. Diaz-Perez; Sharad C. Phatak; Kipling S. Balkcom; Harbans L. Bhardwaj
Source:: Agronomy journal 2007 v.99 no.6 pp. 1448-1457
ISSN:: 0002-1962
Subject:: Crotalaria juncea; green manures; cover crops; biomass; nitrogen fixation; planting date; crop management; nitrogen content; phenology; dry matter accumulation; equations; heat sums; solar radiation; model validation; calibration; Georgia
Abstract:: ... The tropical legume sunn hemp (Crotalaria juncea L.) could be a valuable green manure/cover crop for vegetable producers in the southeastern USA because of its rapid growth and large N₂ fixing ability. Planting and termination date effects on biomass and N accumulation are relatively unknown for the region, but would help producers manage sunn hemp between summer and winter cash crops. We determin ...
Handle:: 10113/14696
DOI:: 10.2134/agronj2006.0294
: https://doi.org/10.2134/agronj2006.0294

25. Conservation Tillage and Cover Crop Influences on Cotton Production on a Southeastern U.S. Coastal Plain Soil

Author:: Harry H. Schomberg; Richard G. McDaniel; Eddie Mallard; Dinku M. Endale; Dwight S. Fisher; Miguel L. Cabrera
Source:: Agronomy journal 2006 v.98 no.5 pp. 1247-1256
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; cotton; strip tillage; cover crops; crop yield; no-tillage; crop rotation; water stress; drought; dry matter accumulation; nitrogen content; profitability; soil water content; Georgia
Abstract:: ... Understanding cover crop and tillage system interactions within specific environments can help maximize productivity and economic returns of cotton (Gossypium hirsutum L.) produced on sandy coastal plain soils of the southeastern USA. A strip-plot design with three replications was used to evaluate the cover crops Austrian winter pea [Pisum sativum L. ssp. arvense (L.)], balansa clover (Trifolium ...
Handle:: 10113/3624
DOI:: 10.2134/agronj2005.0335
: https://doi.org/10.2134/agronj2005.0335

26. Effects of an Uncomposted Municipal Waste Processing By-Product on Prairie Grass Establishment

Author:: Ryan R. Busby; Dick L. Gebhart; H. Allen Torbert
Source:: Agronomy journal 2006 v.98 no.4 pp. 1073-1080
ISSN:: 0002-1962
Subject:: soil amendments; vegetation cover; anthropogenic activities; application rate; Sorghastrum nutans; Panicum virgatum; perennials; nutrient uptake; dry matter accumulation; waste utilization; land restoration; soil fertility; grasses; plant nutrition; botanical composition; municipal solid waste; nutrient availability; soil treatment; Andropogon gerardii; military lands; Georgia
Abstract:: ... A garbage processing technology has been developed that sterilizes and separates inorganic and organic components of municipal solid waste. A study was initiated to evaluate the uncomposted organic by-product of this process as a soil amendment for establishing native prairie grasses on disturbed Army training lands. The waste was incorporated into sandy soils at Fort Benning Military Reservation ...
Handle:: 10113/3609
DOI:: 10.2134/agronj2006.0003
: https://doi.org/10.2134/agronj2006.0003

27. Evaluating Techniques for Determining Tillage Regime in the Southeastern Coastal Plain and Piedmont

Author:: Dana G. Sullivan; Clint C. Truman; Harry H. Schomberg; Dinku M. Endale; Timothy C. Strickland
Source:: Agronomy journal 2006 v.98 no.5 pp. 1236-1246
ISSN:: 0002-1962
Subject:: peanuts; crop residue management; no-tillage; strip tillage; fiber crops; remote sensing; topography; Gossypium hirsutum; soil surveys; Arachis hypogaea; soil water content; conventional tillage; soil organic matter; crop residues; Secale cereale; spatial data; soil texture; crop rotation; cotton; cover crops; color; Georgia
Abstract:: ... Reduced tillage and residue management can have significant impacts on soil and water quality, primarily through the accumulation of soil organic C. Yet, methods of tillage and residue cover assessment are time and resource intensive, and often do not yield spatially representative results. A major goal of this study was to compare new remote sensing (RS) indices with the current line-transect app ...
Handle:: 10113/3623
DOI:: 10.2134/agronj2005.0294
: https://doi.org/10.2134/agronj2005.0294

28. Evaluation of the RZWQM for Simulating Tile Drainage and Leached Nitrate in the Georgia Piedmont

Author:: D. A. Abrahamson; D. E. Radcliffe; J. L. Steiner; M. L. Cabrera; D. M. Endale; G. Hoogenboom
Source:: Agronomy journal 2006 v.98 no.3 pp. 644-654
ISSN:: 0002-1962
Subject:: no-tillage; model validation; calibration; Gossypium hirsutum; nitrate nitrogen; water pollution; simulation models; Zea mays; water quality; conventional tillage; agricultural runoff; corn; leaching; Secale cereale; rye; tile drainage; cotton; evapotranspiration; cover crops; Root Zone Water Quality Model; Georgia
Abstract:: ... Models have become an important tool for evaluating the impact of agricultural management practices on water quality. We evaluated the Root Zone Water Quality Model (RZWQM version 1.3.2004.213), for simulating tile drainage and NO₃ leaching under conventional and no-tillage management practices in cotton (Gossipium hirsutum L.) production and rye (Secale cereale L.) cover cropping practices in a C ...
Handle:: 10113/3628
DOI:: 10.2134/agronj2005.0074
: https://doi.org/10.2134/agronj2005.0074

29. Potential Interaction of Pendimethalin and Systemic Insecticides for Thrips Control in Cotton

Author:: Timothy L. Grey; G. David Buntin; Phillip M. Roberts; David C. Bridges
Source:: Agronomy journal 2006 v.98 no.1 pp. 141-147
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; cotton; Frankliniella fusca; insect pests; plant pests; insect control; pendimethalin; preemergent weed control; aldicarb; imidacloprid; application timing; leaf area; roots; length; seed productivity; plant damage; Georgia
Abstract:: ... Pendimethalin (N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine) can be preemergence (PRE) applied to cotton (Gossypium hirsutum L.) up to 2 d after planting (DAP). Delayed application in combination with excessive moisture (rainfall or irrigation) can result in seedling injury. The systemic insecticides aldicarb [(2-methyl-2-(methylthio)propanal O-[(methylamino)carbonyl]oxime] and imidaclopr ...
DOI:: 10.2134/agronj2005-0145
: https://doi.org/10.2134/agronj2005-0145

30. Biculture Legume–Cereal Cover Crops for Enhanced Biomass Yield and Carbon and Nitrogen

Author:: Upendra M. Sainju; Wayne F. Whitehead; Bharat P. Singh
Source:: Agronomy journal 2005 v.97 no.5 pp. 1403-1412
ISSN:: 0002-1962
Subject:: no-tillage; strip tillage; fiber crops; carbon; nitrogen content; Gossypium hirsutum; dry matter accumulation; grain yield; soil fertility; Vicia villosa; soil organic matter; Secale cereale; crop rotation; nitrogen fertilizers; cotton; grain crops; fertilizer rates; chiseling; grain sorghum; cover crops; Sorghum bicolor; chemical constituents of plants; Georgia
Abstract:: ... Biculture legume–cereal cover cropping may enhance above- and belowground biomass yields and C and N contents. The increase in C and N supply to the soil has the potential to improve soil quality and crop productivity compared with monoculture cover crop species. We examined above- and belowground (0- to 120-cm soil depth) biomass yields and C and N contents of a legume [hairy vetch (Vicia villosa ...
Handle:: 10113/3716
DOI:: 10.2134/agronj2004.0274
: https://doi.org/10.2134/agronj2004.0274

31. Calibration of the Root Zone Water Quality Model for Simulating Tile Drainage and Leached Nitrate in the Georgia Piedmont

Author:: D. A. Abrahamson; D. E. Radcliffe; J. L. Steiner; M. L. Cabrera; J. D. Hanson; K. W. Rojas; H. H. Schomberg; D. S. Fisher; L. Schwartz; G. Hoogenboom
Source:: Agronomy journal 2005 v.97 no.6 pp. 1584-1602
ISSN:: 0002-1962
Subject:: soil pore system; fiber crops; calibration; Gossypium hirsutum; nitrate nitrogen; grain yield; simulation models; Zea mays; conventional tillage; corn; leaching; Secale cereale; rye; leaf area; tile drainage; crop management; cotton; grain crops; Root Zone Water Quality Model; Georgia
Abstract:: ... Calibration procedures and data used to parameterize a model, including model components that may or may not have been addressed, are generally not well documented in modeling studies. A comprehensive description of the process and parameters used for calibrating the Root Zone Water Quality Model, v. 1.3.2004.213, is presented in this article. The model was calibrated to simulate tile drainage and ...
Handle:: 10113/3722
DOI:: 10.2134/agronj2004.0160
: https://doi.org/10.2134/agronj2004.0160

32. Improving the Management of Dicot Weeds in Peanut with Narrow Row Spacings and Residual Herbicides

Author:: W. Carroll Johnson; Eric P. Prostko; Benjamin G. Mullinix
Source:: Agronomy journal 2005 v.97 no.1 pp. 85-88
ISSN:: 1435-0645
Subject:: flumioxazin; weed control; peanuts; chemical control; pesticide application; cultural control; imazapic; row spacing; sulfentrazone; diclosulam; crop yield; weeds; Arachis hypogaea; Georgia
Abstract:: ... Narrow row spacings in peanut (L.) production suppress spotted wilt and promote rapid canopy closure, improving competitiveness with weeds. Trials were conducted from 1999 to 2001 to determine if weed suppression in narrow row spacings, in conjunction with new residual herbicides supplemented with nonresidual herbicides, improved weed control and reduced herbicide use. Within each row spacing were ...
Handle:: 10113/3772
DOI:: 10.2134/agronj2005.0085
: https://doi.org/10.2134/agronj2005.0085

33. Obligatory Summer-Dormant Cool-Season Perennial Grasses for Semiarid Environments of the Southern Great Plains

Author:: D. P. Malinowski; H. Zuo; B. A. Kramp; J. P. Muir; W. E. Pinchak
Source:: Agronomy journal 2005 v.97 no.1 pp. 147-154
ISSN:: 0002-1962
Subject:: Bromus; Epichloe coenophiala; Festuca arundinacea; Paleustalfs; Phalaris aquatica; Triticum aestivum; aboveground biomass; agronomy; autumn; cold season; cultivars; defoliation; drought; endophytes; forage; sandy loam soils; summer; wheat; Georgia
Abstract:: ... Introduced cool-season perennial grasses may become an important complementary winter forage to dual-use wheat (Triticum aestivum L.) in high-risk semiarid environments of the southern Great Plains. Currently recommended, summer semidormant cultivars are not adapted to prolonged and severe summer drought and not productive in the autumn grazing season. In an experiment planted at Vernon, TX, on a ...
DOI:: 10.2134/agronj2005.0147
: https://doi.org/10.2134/agronj2005.0147

34. Tillage, Cover Crops, and Nitrogen Fertilization Effects on Cotton and Sorghum Root Biomass, Carbon, and Nitrogen

Author:: Upendra M. Sainju; Bharat P. Singh; Wayne F. Whitehead
Source:: Agronomy journal 2005 v.97 no.5 pp. 1279-1290
ISSN:: 0002-1962
Subject:: no-tillage; fiber crops; carbon; field experimentation; application rate; roots; nitrogen content; Gossypium hirsutum; fertilizer application; dry matter accumulation; Vicia villosa; soil quality; Secale cereale; crop management; nitrogen fertilizers; cotton; nitrogen; chiseling; cover crops; Sorghum bicolor; Georgia
Abstract:: ... Management practices may influence cotton (Gossypium hirsutum L.) and sorghum [Sorghum bicolor (L.) Moench)] root C and N inputs for improving soil quality. We examined the influence of three tillage practices [no-till (NT), strip till (ST), and chisel till (CT)], four cover crops {legume [hairy vetch (Vicia villosa Roth)], nonlegume [rye (Secale cereale L.)], biculture of legume and nonlegume (ve ...
Handle:: 10113/3710
DOI:: 10.2134/agronj2004.0213
: https://doi.org/10.2134/agronj2004.0213

35. Yield, quality, and profitability of cotton produced at varying plant densities

Author:: Bednarz, C.W.; Shurley, W.D.; Anthony, W.S.; Nichols, R.L.
Source:: Agronomy journal 2005 v.97 no.1 pp. 235-240
ISSN:: 0002-1962
Subject:: cultivars; cotton ginning; lint cotton; profitability; Gossypium hirsutum; costs and returns; plant density; crop yield; fiber quality; Georgia
Abstract:: ... Modifying fruit distribution through varying plant density may impact cotton (Gossypium hirsutum L.) fiber quality. This study was conducted to determine how lint yield, fiber quality, and profitability of cotton may be manipulated through plant density. Two cotton cultivars were overseeded and hand-thinned to 3.6, 9.0, 12.6, and 21.5 plants m(-2) at two University of Georgia experiment stations i ...
Handle:: 10113/3778

36. Bermudagrass Management in the Southern Piedmont USA

Author:: A. J. Franzluebbers; S. R. Wilkinson; J. A. Stuedemann
Source:: Agronomy journal 2004 v.96 no.5 pp. 1400-1411
ISSN:: 0002-1962
Subject:: Cynodon dactylon; Gallus gallus; Kanhapludults; Trifolium incarnatum; agronomy; cattle; cover crops; defoliation; dry matter accumulation; forage; hay; piedmont; poultry manure; Georgia
Abstract:: ... Productivity, quality, and persistence of ‘Coastal’ bermudagrass [Cynodon dactylon (L.) Pers.] pastures are affected by fertilization, but possible interactions with defoliation regime including animal grazing are not fully known. We evaluated three sources of fertilization with equivalent N rates [inorganic, crimson clover (Trifolium incarnatum L.) cover crop plus inorganic, and chicken (Gallus g ...
DOI:: 10.2134/agronj2004.1400
: https://doi.org/10.2134/agronj2004.1400

37. Bermudagrass management in the Southern Piedmont USA: VIII. Soil pH and nutrient cations

Author:: Franzluebbers. A.J.; Wilkinson, S.R.; Stuedemann, J.A.
Source:: Agronomy journal 2004 v.96 no.5 pp. 1390-1399
ISSN:: 0002-1962
Subject:: Cynodon dactylon; forage grasses; pastures; range management; fertilizer application; ammonium nitrate; poultry manure; soil amendments; soil fertility; nitrogen; potassium; phosphorus; zinc; manganese; copper; soil pH; hay; harvesting; nutrient offtake; grazing; beef cattle; Trifolium incarnatum; Georgia
Abstract:: ... Forage utilization could affect soil nutrient dynamics and depth distribution, potentially changing long-term productivity and environmental quality. The effect of forage utilization on nutrient cycling might also be altered depending upon the source and quantity of nutrients applied. We evaluated changes in soil pH and extractable-soil nutrient cations during the first 5 yr of bermudagrass [Cynod ...
Handle:: 10113/8286

38. Bermudagrass management in the Southern Piedmont USA: X. Coastal productivity and persistence in response to fertilization and defoliation regimes

Author:: Franzluebbers, A.J.; Wilkinson, S.R.; Stuedemann, J.A.
Source:: Agronomy journal 2004 v.96 no.5 pp. 1400-1411
ISSN:: 0002-1962
Subject:: Cynodon dactylon; range management; fertilizer application; ammonium nitrate; poultry manure; soil amendments; forage grasses; crop yield; hay; pastures; nitrogen content; carbon nitrogen ratio; grazing; beef cattle; Trifolium incarnatum; Georgia
Abstract:: ... Productivity, quality, and persistence of 'Coastal' bermudagrass [Cynodon dactylon (L.) Pers.] pastures are affected by fertilization, but possible interactions with defoliation regime including animal grazing are not fully known. We evaluated three sources of fertilization with equivalent N rates [inorganic, crimson clover (Trifolium incarnatum L.) cover crop plus inorganic, and chicken (Gallus g ...
Handle:: 10113/8287

39. Comparison of Tillage Types and Frequencies for Cotton on Southern Piedmont Soil

Author:: Harry H. Schomberg; George W. Langdale; Alan J. Franzluebbers; Marshall C. Lamb
Source:: Agronomy journal 2003 v.95 no.5 pp. 1281-1287
ISSN:: 0002-1962
Subject:: costs and returns; soil depth; crop yield; application rate; weed control; residual effects; Gossypium hirsutum; soil density; deep tillage; lint cotton; conventional tillage; reduced tillage; in-row tillage; chiseling; Kanhapludults; growing season; rain; piedmont soils; sandy loam soils; Georgia
Abstract:: ... Tillage to disrupt root-restricting, consolidated soil zones can improve rooting capacity and crop production, but costs increase with the need for more powerful tractors. Between 1992 and 1996, agronomic and economic consequences of annual or less frequent soil disruption treatments were evaluated for cotton (Gossypium hirsutum L.) on a Typic Kanhapludult. Two soil-disruptive treatments, fall par ...
Handle:: 10113/11541
DOI:: 10.2134/agronj2003.1281
: https://doi.org/10.2134/agronj2003.1281

40. Grazing-Tolerant Alfalfa Cultivars Perform Well under Rotational Stocking and Hay Management

Author:: J. H. Bouton; R. N. Gates
Source:: Agronomy journal 2003 v.95 no.6 pp. 1461-1464
ISSN:: 0002-1962
Subject:: cultivars; forage crops; cattle; Medicago sativa; rotational grazing; alfalfa; crop yield; grazing management; genetic variation; selection criteria; mortality; Georgia
Abstract:: ... Grazing-tolerant alfalfa (Medicago sativa L.) cultivars are developed using continuous stocking with beef cattle (Bos taurus) during screening and selection. Alfalfa is mainly recommended for use in hay making and under rotational stocking rather than continuous stocking. Performance of alfalfa cultivars selected under the specificity of intensive, continuous stocking in recommended management sys ...
Handle:: 10113/11545
DOI:: 10.2134/agronj2003.1461
: https://doi.org/10.2134/agronj2003.1461

41. Losses in Yield, Quality, and Profitability of Cotton from Improper Harvest Timing

Author:: Craig W. Bednarz; W. Don Shurley; W. Stanley Anthony
Source:: Agronomy journal 2002 v.94 no.5 pp. 1004-1011
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; Kandiudults; advanced fiber information system; coastal plains; fiber content; fiber quality; financial economics; high volume instruments; income; kaolinite; lint cotton; lint yield; loamy sand soils; mechanical harvesting; profitability; weathering; Georgia
Abstract:: ... Excessive weathering may diminish cotton (Gossypium hirsutum L.) lint yield and fiber quality to the extent that economic losses occur for the producer. Our objective was to determine the effects of systematic delayed harvest on cotton lint yield, fiber quality, and profitability. Experiments were conducted from 1998 to 2000 at the Coastal Plain Experiment Station, Tifton, GA, on a Tifton loamy sa ...
DOI:: 10.2134/agronj2002.1004
: https://doi.org/10.2134/agronj2002.1004

42. Soil Organic Matter and Tomato Yield following Tillage, Cover Cropping, and Nitrogen Fertilization

Author:: Upendra M. Sainju; Bharat P. Singh; Sidat Yaffa
Source:: Agronomy journal 2002 v.94 no.3 pp. 594-602
ISSN:: 0002-1962
Subject:: Paleudults; Solanum lycopersicum var. lycopersicum; Vicia villosa; agronomy; mineralization; nitrogen; nitrogen fertilizers; no-tillage; sandy loam soils; soil erosion; soil organic carbon; tomatoes; Georgia
Abstract:: ... Management practices can influence soil C and N and tomato (Lycopersicon esculentum Mill) yield. We examined the influence of tillage practices [no-till (NT), chisel plowing (CP), and moldboard plowing (MP)], cover crops [hairy vetch (Vicia villosa Roth) vs. winter weeds], and N fertilization rates (0, 90, and 180 kg N ha⁻¹) on soil organic C and N, potential C and N mineralization (PCM and PNM, r ...
DOI:: 10.2134/agronj2002.5940
: https://doi.org/10.2134/agronj2002.5940

43. Discriminating Crop Residues from Soil by Shortwave Infrared Reflectance

Author:: Craig S.T. Daughtry
Source:: Agronomy journal 2001 v.93 no.1 pp. 125-131
ISSN:: 0002-1962
Subject:: Glycine max; Zea mays; crop residues; quantitative analysis; reflectance; infrared radiation; spatial variation; soil water content; lignin; cellulose; absorption; water content; Minnesota; Georgia; Maryland; Texas
Abstract:: ... Quantifying crop residue cover on the soil surface is important for evaluating the effectiveness of conservation tillage practices. Current methods of measuring residue cover are inadequate in characterizing the spatial variability of residue cover over large fields. The objectives of this research were to determine the spectral reflectance of crop residues and soils as a function of water content ...
Handle:: 10113/14880
DOI:: 10.2134/agronj2001.931125x
: https://doi.org/10.2134/agronj2001.931125x

44. Herbage Accumulation of Three Bahiagrass Populations during the Cool Season

Author:: Roger N. Gates; Paul Mislevy; Frank G. Martin
Source:: Agronomy journal 2001 v.93 no.1 pp. 112-117
ISSN:: 0002-1962
Subject:: Paspalum notatum; dry matter accumulation; biomass; forage; recurrent selection; seasonal variation; harvest date; crude protein; in vitro digestibility; phenotype; population; Georgia; Florida
Abstract:: ... Fall and winter are periods of critical forage shortage in subtropical regions of the world, including the extreme southeastern USA. Cool-season herbage accumulation has not been documented for bahiagrass [Paspalum notatum Flügge var. saurae Parodi] that has been selected using recurrent restricted phenotypic selection (RRPS) for increased warm-season yield. Regrowth of `Pensacola', `Tifton 9', an ...
Handle:: 10113/26918
DOI:: 10.2134/agronj2001.931112x
: https://doi.org/10.2134/agronj2001.931112x

45. Tillage and Pest Management Considerations in a Peanut–Cotton Rotation in the Southeastern Coastal Plain

Author:: W.Carroll Johnson; Timothy B. Brenneman; Shelby H. Baker; Alva W. Johnson; Donald R. Sumner; Benjamin G. Mullinix
Source:: Agronomy journal 2001 v.93 no.3 pp. 570-576
ISSN:: 0002-1962
Subject:: weed control; flutolanil; long term experiments; no-tillage; plant diseases and disorders; Gossypium hirsutum; stubble; botanical composition; Secale cereale; plant density; cover crops; crop yield; weeds; Arachis hypogaea; crop rotation; Tomato spotted wilt orthotospovirus; Georgia
Abstract:: ... Radical changes in crop production have occurred in the southeastern USA in recent years. Peanut (Arachis hypogaea L.) and cotton (Gossypium hirsutum L.) are now planted in direct rotation, and conservation tillage is commonly used for both crops. Comprehensive data is lacking on crop and pest management recommendations in those systems, so a long-term study was conducted in Tifton, GA on the effe ...
Handle:: 10113/23019
DOI:: 10.2134/agronj2001.933570x
: https://doi.org/10.2134/agronj2001.933570x

46. Tillage, Cover Crop, and Kill-Planting Date Effects on Corn Yield and Soil Nitrogen

Author:: Upendra M. Sainju; Bharat P. Singh
Source:: Agronomy journal 2001 v.93 no.4 pp. 878-886
ISSN:: 0002-1962
Subject:: Paleudults; Vicia villosa; Zea mays; agronomy; corn; cover crops; crop management; nitrogen; nitrogen content; sandy loam soils; silage; spring; Georgia
Abstract:: ... Tillage and spring kill date may affect cover crop N accumulation and subsequent N release to the soil, thereby influencing corn (Zea mays L.) N uptake and yield. We examined the influence of three tillage practices [no till (NT), chisel plowing (CP), and moldboard plowing (MP)], two cover crop management systems [hairy vetch (Vicia villosa Roth) vs. winter weeds], and two cover crop kill–corn pla ...
DOI:: 10.2134/agronj2001.934878x
: https://doi.org/10.2134/agronj2001.934878x

47. Agronomic and Economic Analyses of Cotton Starter Fertilizers

Author:: Craig W. Bednarz; Glen H. Harris; W.Don Shurley
Source:: Agronomy journal 2000 v.92 no.4 pp. 766-771
ISSN:: 0002-1962
Subject:: Gossypium hirsutum; Kandiudults; agronomy; coastal plains; kaolinite; leaf area index; lint cotton; loamy sand soils; micronaire; plant height; prices; sandy clay loam soils; starter fertilizers; weather; Georgia
Abstract:: ... None of the published literature has focused on the response of cotton (Gossypium hirsutum L.) to various starter fertilizer sources. This study was conducted to determine (1) if cotton grown on Coastal Plain soils in South Georgia would respond to different starter fertilizer sources and (2) if use of starter fertilizers would result in an economic gain. Experiments were conducted in 1997 and 199 ...
DOI:: 10.2134/agronj2000.924766x
: https://doi.org/10.2134/agronj2000.924766x

48. Evaluating Methods for Simulating Soybean Cultivar Responses Using Cross Validation

Author:: Ayse Irmak; James W. Jones; Theodoros Mavromatis; Stephen M. Welch; Kenneth J. Boote; Gail G. Wilkerson
Source:: Agronomy journal 2000 v.92 no.6 pp. 1140-1149
ISSN:: 0002-1962
Subject:: crop models; crop yield; cultivars; decision support systems; equations; farmers; flowering; new variety; prediction; regression analysis; simulation models; soybeans; variety trials; Georgia
Abstract:: ... Crop simulation models are used in research worldwide, and efforts are now being made to incorporate them into decision-support systems for farmers and their advisors. However, their on-farm acceptance will be limited unless methods can be found to determine model coefficients for new cultivars that are released by public and private breeders. The availability of data to determine coefficients is ...
DOI:: 10.2134/agronj2000.9261140x
: https://doi.org/10.2134/agronj2000.9261140x

49. Spatial Distribution of Extractable Phosphorus, Potassium, and Magnesium as Influenced by Fertilizer and Tall Fescue Endophyte Status

Author:: Harry H. Schomberg; John A. Stuedemann; Alan J. Franzluebbers; Stanley R. Wilkinson
Source:: Agronomy journal 2000 v.92 no.5 pp. 981-986
ISSN:: 0002-1962
Subject:: range management; endophytes; animal behavior; Festuca arundinacea; alkaloids; liming; Epichloe coenophiala; spatial distribution; soil depth; magnesium; shade; potassium; soil fertility; spatial variation; NPK fertilizers; phosphorus; application rate; biogeochemical cycles; Georgia
Abstract:: ... Animals influence nutrient cycling within grazed systems, and the effect may be greater with tall fescue (Festuca arundinacea Schreb.) because of endophyte-produced alkaloids that cause fescue toxicosis and alter animal behavior. Twelve grazed tall fescue pastures, established in a Cecil sandy loam (fine, kaolinitic, thermic Typic Kanhapludult) soil near Watkinsville, GA were used to measure ferti ...
Handle:: 10113/14348
DOI:: 10.2134/agronj2000.925981x
: https://doi.org/10.2134/agronj2000.925981x

50. Cover Crop Root Distribution and Its Effects on Soil Nitrogen Cycling

Author:: Upendra M. Sainju; Bharat P. Singh; Wayne F. Whitehead
Source:: Agronomy journal 1998 v.90 no.4 pp. 511-518
ISSN:: 0002-1962
Subject:: Vicia villosa; nitrogen content; Trifolium incarnatum; spatial distribution; ambient temperature; nutrient uptake; Secale cereale; leaching; cover crops; soil depth; seasonal variation; soil fertility; biomass production; roots; biogeochemical cycles; shoots; Georgia
Abstract:: ... Nitrate N in the soil is susceptible to leaching with fall and winter precipitation and can pollute groundwater. Winter cover crops to scavenge residual NO⁻₃ through root extension are a possible solution. A 2-yr field study was conducted on a Greenville fsl (fine, kaolinitic, thermic Rhodic Kandiudults) in central Georgia to determine root distribution of legume and nonlegnme winter cover crops a ...
DOI:: 10.2134/agronj1998.00021962009000040012x
: https://doi.org/10.2134/agronj1998.00021962009000040012x

51. Establishment of ‘Tifton 9’ Bahiagrass in Response to Planting Date and Seed Coat Removal

Author:: Roger N. Gates; Chester L. Dewald
Source:: Agronomy journal 1998 v.90 no.4 pp. 462-465
ISSN:: 0002-1962
Subject:: height; plant characteristics; Paspalum notatum; planting date; hulling; seedling emergence; field experimentation; soil water content; testa; plant establishment; Georgia
Abstract:: ... Stands of ‘Tifton 9’, like those of other bahiagrasses (Paspalum notatum Flügge var. saurae Parodi), develop slowly. Our objectives were to determine seedling emergence and stand establishment responses to planting date and mechanical seed coat removal using greenhouse and field plantings. Seed dehniled by acceleration in an airstream to hit a metal plate (7.8 kg ha⁻¹) or whole seed (111.2 kg ha⁻¹ ...
DOI:: 10.2134/agronj1998.00021962009000040003x
: https://doi.org/10.2134/agronj1998.00021962009000040003x

52. Nitrogen and Defoliation Management: Effects on Yield and Nutritive Value of Flaccidgrass

Author:: Joseph C. Burns; Douglas S. Chamblee; David P. Belesky; Dwight S. Fisher; David H. Timothy
Source:: Agronomy journal 1998 v.90 no.1 pp. 85-92
ISSN:: 0002-1962
Subject:: dietary fiber; in vitro digestibility; flowering; hemicellulose; nitrogen; stubble; Pennisetum flaccidum; lignin; height; cellulose; crop yield; top dressings; mineral content; application rate; nitrogen fertilizers; Georgia; North Carolina
Abstract:: ... ‘Carostan’ flaccidgrass (Pennisetum flaccidum Griseb.), a C₄ perennial grass, has shown high quality potential in animal trials. Its yield response to defoliation frequency and N fertilizafion, however, has not been reported. We examined the influence of stubble height and of a range of N applicafions in two defoliation experiments over 4 yr. Experiment 1 (Raleigh, NC) combined two harvest heights ...
DOI:: 10.2134/agronj1998.00021962009000010016x
: https://doi.org/10.2134/agronj1998.00021962009000010016x

53. Seed Yield and Seed Quality Response of Pensacola and Improved Bahiagrasses to Fertilization

Author:: Roger N. Gates; Glenn W. Burton
Source:: Agronomy journal 1998 v.90 no.5 pp. 607-611
ISSN:: 0002-1962
Subject:: cultivars; forage; crop yield; potassium; seed quality; seed productivity; NPK fertilizers; phosphorus; application rate; nitrogen fertilizers; Paspalum notatum; Georgia
Abstract:: ... Availability of improved bahiagrass cultivars, such as ‘Tifton 9’, has increased the potential value of seed produced from bahiagrass. Seed yield response of improved entries to fertilizer inputs is unknown and the relationship of fertility to bahiagrass seed quality is poorly defined. Our objectives were to measure seed yield and seed quality response of three bahiagrass (Paspalum notatum Flügge ...
DOI:: 10.2134/agronj1998.00021962009000050007x
: https://doi.org/10.2134/agronj1998.00021962009000050007x

54. AEGIS/WIN: A Computer Program for the Application of Crop Simulation Models Across Geographic Areas

Author:: Thomas Engel; Gerrit Hoogenboom; James W. Jones; Paul W. Wilkens
Source:: Agronomy journal 1997 v.89 no.6 pp. 919-928
ISSN:: 0002-1962
Subject:: Arachis hypogaea; agronomy; computer software; crop management; crop models; decision support systems; farms; geographic information systems; land use; peanuts; statistics; Georgia
Abstract:: ... Computer-based biological simulation models have been used to calculate the effects of different management practices and land-use systems on agricultural production and to assess the impact of these practices on the environment. Using spatial visualization techniques to display simulation results can significantly improve the presentation and interpretation of these analyses. The objective of thi ...
DOI:: 10.2134/agronj1997.00021962008900060012x
: https://doi.org/10.2134/agronj1997.00021962008900060012x

55. Comparison of Residue Decomposition Models Used in Erosion Prediction

Author:: Harry H. Schomberg; Jean L. Steiner
Source:: Agronomy journal 1997 v.89 no.6 pp. 911-919
ISSN:: 0002-1962
Subject:: mathematical models; irrigation; crop residues; air temperature; water; mass; soil erosion; degradation; climatic zones; Oregon; Texas; Georgia
Abstract:: ... Crop residues protect soil from water and wind erosion. How long the residues remain effective depends on their decomposition rate. The crop residue decomposition submodels developed for the Revised Wind Erosion Equation (RWEQ) and Revised Universal Soil Loss Equation (RUSLE), which are used to determine the effectiveness of conservation practices, use different approaches to account for water and ...
DOI:: 10.2134/agronj1997.00021962008900060011x
: https://doi.org/10.2134/agronj1997.00021962008900060011x

56. Influence of Seeding Variables on ‘Tifton 9’ Bahiagrass Establishment

Author:: Roger N. Gates; J. Jeffrey Mullahey
Source:: Agronomy journal 1997 v.89 no.1 pp. 134-139
ISSN:: 0002-1962
Subject:: Paspalum notatum; accelerated aging; autumn; crop rotation; crops; forage yield; humidity; occupations; planting; planting season; seed dormancy; solid matrix priming; sowing; spring; stand establishment; summer; temperature; Florida; Georgia
Abstract:: ... ‘Tifton 9’ possesses attributes similar to ‘Pensacola’ bahiagrass (Paspalum notatum Flügge var. saurae Parodi) including persistence, wide adaptation, and positive rotation effects for subsequent crops. Seed dormancy has been implicated as a cause of slow establishment of bahiagrass. Our objective was to evaluate dormancy-reducing seed treatments on multiple seed lots with a range of seeding rates ...
DOI:: 10.2134/agronj1997.00021962008900010020x
: https://doi.org/10.2134/agronj1997.00021962008900010020x

57. Performance and Stability of Brachytic and Normal-Stemmed Isolines of Soybean

Author:: Suk Ha Lee; Roger H. Boerma; Paul L. Raymer; Doyle A. Ashley
Source:: Agronomy journal 1997 v.89 no.2 pp. 275-278
ISSN:: 0002-1962
Subject:: Glycine max; lodging; genetic resistance; stems; seeds; height; agronomic traits; crop yield; genotype; plant morphology; Georgia
Abstract:: ... Plant lodging is a problem in soybean [Glycine max (L.) Merr.] production, particularly in high-yield environments. The brachytic stem trait (sbl sb2) reduces plant stature while maintaining the number of nodes for fruiting and may be desirable in the development of lodging-resistant cultivars. To determine the effects of brachytic stem on seed yield, plant height, and other agronomic traits acros ...
DOI:: 10.2134/agronj1997.00021962008900020020x
: https://doi.org/10.2134/agronj1997.00021962008900020020x

58. Subsoil Nitrate Uptake by Grain Pearl Millet

Author:: Romulo S. C. Menezes; Gary J. Gascho; Wayne W. Hanna; Miguel L. Cabrera; James E. Hook
Source:: Agronomy journal 1997 v.89 no.2 pp. 189-194
ISSN:: 0002-1962
Subject:: Pennisetum glaucum; nitrogen fertilizers; sandy soils; subsoil; permeability; acid soils; nutrient uptake; nitrate nitrogen; root systems; plant development; application rate; loamy sand soils; Georgia
Abstract:: ... Pearl millet [Pennisetum glaucum (R.) Br.] is a high-quality grain crop that can that can be grown without irrigation during hot, dry summers in the southeastern United States. The N rate required for optimum pearl millet grain yield varies widely in published studies, possibly because of variability in residual soil N from the subsoil. Field studies were conducted in the southern Coastal Plain at ...
DOI:: 10.2134/agronj1997.00021962008900020007x
: https://doi.org/10.2134/agronj1997.00021962008900020007x

59. Tall Fescue Response to Clipping and Competition with No-Till Seeded Alfalfa as Affected by Fungal Endophyte

Author:: Carl S. Hoveland; Robert G. Durham; Joseph H. Bouton
Source:: Agronomy journal 1997 v.89 no.1 pp. 119-125
ISSN:: 0002-1962
Subject:: Dactylis glomerata; Epichloe coenophiala; Festuca arundinacea; Medicago sativa; Phalaris arundinacea; Poa pratensis; alfalfa; autumn; cutting frequency; endophytes; forage yield; fungi; grasses; no-tillage; summer; Georgia
Abstract:: ... Tall fescue (Festuca arundinacea Schreb.) is generally less productive, persistent, and competitive under stress after removal of its fungal endophyte, Neotyphodium coenophialum (Morgan-Jones & W. Gams) Glenn, Bacon & Hanlin (syn. Acremonium coenophialum Morgan- Jones & W. Gams). Our objectives were to compare endophyteinfected (E +) and endophyte-free (E −) tall fescue for (i) forage yield and ti ...
DOI:: 10.2134/agronj1997.00021962008900010018x
: https://doi.org/10.2134/agronj1997.00021962008900010018x

60. Turfgrass Response to Slow-Release Nitrogen Fertilizers

Author:: Robert N. Carrow
Source:: Agronomy journal 1997 v.89 no.3 pp. 491-496
ISSN:: 0002-1962
Subject:: solar radiation; Cynodon transvaalensis; soil temperature; coatings; Cynodon dactylon; mowing; shoots; sulfur-coated urea; urea formaldehyde; particle size; air temperature; rain; wind speed; NPK fertilizers; Georgia
Abstract:: ... New polymer coatings have been developed and used to coat sulfurcoated urea (SCU) and other core N materials. These polymer-coated S-coated ureas (PCSCU) and polymer-coated S-coated N-P-K fertilizers (PCSCF) require evaluation for their N-release properties turfgrass culture. Also, N carriers from three different classes of N sources were included: polymer-coated urea (PCU), ureaformaldehyde (UF) ...
DOI:: 10.2134/agronj1997.00021962008900030020x
: https://doi.org/10.2134/agronj1997.00021962008900030020x

61. Effects of Water Deficit Stress on Competitive Interaction of Peanut and Sicklepod

Author:: Samuel Moreshet; David C. Bridges; D. Scott NeSmith; Bingru Huang
Source:: Agronomy journal 1996 v.88 no.4 pp. 636-644
ISSN:: 0002-1962
Subject:: Arachis hypogaea; crop-weed competition; Senna obtusifolia; water uptake; irrigated conditions; dry environmental conditions; water stress; root systems; osmotic pressure; turgor; Georgia
Abstract:: ... One of the potentially deleterious effects of weeds on crop production is competition for water. In this study, competitive interactions between peanut (Arachis hypogaea L.) and sicklepod (Senna obtusifolia L.) were investigated. The two species were grown alone and mixed in a glasshouse in 118-L barrels (0.65 deep and 0.48 m wide) filled with a Molena sandy soil (sandy, mixed, thermic Psammentic ...
DOI:: 10.2134/agronj1996.00021962008800040023x
: https://doi.org/10.2134/agronj1996.00021962008800040023x

62. Pod Yield and Stem Rot Evaluation of Peanut Cultivars Treated with Tebuconazole

Author:: William D. Branch; Timothy B. Brenneman
Source:: Agronomy journal 1996 v.88 no.6 pp. 933-936
ISSN:: 0002-1962
Subject:: cultivars; tebuconazole; chemical control; genetic resistance; fungal diseases of plants; irrigated conditions; Mycosphaerella berkeleyi; Thanatephorus cucumeris; disease control; crop yield; disease resistance; Arachis hypogaea; Athelia rolfsii; pods; Georgia
Abstract:: ... Tebuconazole {α-[2-(4-chlorophenyl)ethyl]-α-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol} has been registered by the U.S. Environmental Protection Agency for use in peanut (Arachis hypogaea L.) production as a new sterol-inhibiting fungicide, under the trade name Folicur 3.6F. It is labeled to be used as four consecutive sprays between two applications of non-sterol-inhibiting fungicides for co ...
DOI:: 10.2134/agronj1996.00021962003600060014x
: https://doi.org/10.2134/agronj1996.00021962003600060014x

63. Rhizoma Peanut and Alfalfa Productivity and Nutrient Composition in Central Georgia

Author:: Thomas H. Terrill; Seyoum Gelaye; Sauveur Mahotiere; Eugene A. Amoah; Schauston Miller; Roger N. Gates; William R. Windham
Source:: Agronomy journal 1996 v.88 no.3 pp. 485-488
ISSN:: 0002-1962
Subject:: crop quality; forage crops; in vitro digestibility; fiber content; calcium; Medicago sativa; dry matter accumulation; magnesium; nutritive value; crop yield; temperate zones; crude protein; chemical constituents of plants; lignin; coastal plains; Arachis glabrata; phosphorus; Georgia
Abstract:: ... Limits of environmental adaptation of ‘Florigraze’ rhizoma peanut (Arachis glabrata Benth.), a high-quality perennial warm-season legume, have not been well defined. A field experiment compared yield and nutritive value of rhizoma peanut and alfalfa (Medicago sativa L.) in central Georgia on a Norfolk soil (fine-loamy, siliceous, thermic Typic Kandiudults). Crude protein (CP), neutral-detergent fi ...
DOI:: 10.2134/agronj1996.00021962008800030021x
: https://doi.org/10.2134/agronj1996.00021962008800030021x

64. Populations of Foliage-Inhabiting Arthropods on Soybean with Reduced Tillage and Herbicide Use

Author:: G. David Buntin; William L. Hargrove; Daniel V. McCracken
Source:: Agronomy journal 1995 v.87 no.5 pp. 789-794
ISSN:: 0002-1962
Subject:: Cerotoma trifurcata; weed control; Sigmodon hispidus; predatory arthropods; Triticum aestivum; Digitaria sanguinalis; Zea mays; Glycine max; cultural control; Pentatomidae; crop damage; species diversity; weeds; low input agriculture; defoliation; crop rotation; arthropod pests; Geocoris; pods; tillage; herbicides; Georgia
Abstract:: ... Modification of tillage and herbicide use patterns to reduce adverse environmental effects on soybean [Glycine max (L.) Merr.] production may impact arthropod populations and damage in soybean. The objectives of this field study were to examine the effect of reduced tillage and herbicide use on populations of foliage-inhabiting phytophagous and beneficial arthropods and their damage in soybean. Ti ...
DOI:: 10.2134/agronj1995.00021962008700050002x
: https://doi.org/10.2134/agronj1995.00021962008700050002x

65. Fenarimol Tolerance of Roughstalk Bluegrass Overseeded in Bermudagrass Greens

Author:: B. Jack Johnson
Source:: Agronomy journal 1994 v.86 no.3 pp. 519-522
ISSN:: 0002-1962
Subject:: Cynodon; hybrids; lawns and turf; Poa trivialis; weed control; Poa annua; chemical control; fenarimol; phytotoxicity; application rate; athletic fields; golf courses; split application; Georgia
Abstract:: ... Bermudagrass (Cynodon spp.) putting greens are overseeded with cool-season grasses in the fall to maintain a high-quality putting turf throughout the southern USA. Perennial ryegrass (Lolium perenne L.) has been the predominant grass used for overseeding until recently, when roughstalk (Poa trivialis L.) has been increasingly used for overseeding. Annual bluegrass (Poa annua L.) is a problem winte ...
DOI:: 10.2134/agronj1994.00021962008600030012x
: https://doi.org/10.2134/agronj1994.00021962008600030012x

66. Influence of Plant Growth Regulators and Mowing on Two Bermudagrasses

Author:: B. Jack Johnson
Source:: Agronomy journal 1994 v.86 no.5 pp. 805-810
ISSN:: 0002-1962
Subject:: Cynodon dactylon; hybrids; lawns and turf; mowing; growth retardation; tillers; inflorescences; seeds; paclobutrazol; application rate; Georgia
Abstract:: ... ‘Tifway‘ hybrid bermudagrass [Cynodon transvaalensis Burtt-Davy × C. daetylon (L.) Pers.] and common bermudagrass [C. dactylon (L.) Pers.] are popular turfgrasses used throughout the southern USA. When both grasses are manageda s a medium- to high-quality turf, frequent mowings are needed to limit vegetative growth and seedhead emergence. Plant growth regulators offer the potential to reduce the n ...
DOI:: 10.2134/agronj1994.00021962008600050011x
: https://doi.org/10.2134/agronj1994.00021962008600050011x

67. Crop Performance Trials under Irrigated and Dryland Conditions

Author:: Daryl Bowman; Paul Raymer; Don Dombeck
Source:: Agronomy journal 1993 v.85 no.3 pp. 610-614
ISSN:: 0002-1962
Subject:: Zea mays; Glycine max; irrigated conditions; dry environmental conditions; cultivars; hybrids; water stress; genotype-environment interaction; genetic variation; variety trials; crop yield; North Carolina; Georgia
Abstract:: ... Corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] performance trials are sometimes conducted under both irrigated and dryland conditions in the southeastern USA. It is not known whether irrigated trials are better trials statistically or if irrigation causes relative rank changes in hybrid or cultivar performance. To answer these questions, corn data were examined from four different environ ...
DOI:: 10.2134/agronj1993.00021962008500030017x
: https://doi.org/10.2134/agronj1993.00021962008500030017x

68. Frequency of Plant Growth Regulator and Mowing Treatments: Effects on Injury and Suppression of Centipedegrass

Author:: B. Jack Johnson
Source:: Agronomy journal 1993 v.85 no.2 pp. 276-280
ISSN:: 0002-1962
Subject:: Eremochloa ophiuroides; seeds; plant growth substances; imazethapyr; mefluidide; mowing; plant density; application rate; frequency; Georgia
Abstract:: ... Centipedegrass [Eremochloa ophiuroides (Munro) Hack.] is a popular low maintenance turfgrass that produces seedheads from midsummer until early fall, Since regular mowing is needed to maintain a quality turf, experiments on rate and frequency of plant growth regulator applications and mowing frequencies were initiated to assess their effect on suppression of vegetative and reproductive growth of c ...
DOI:: 10.2134/agronj1993.00021962008500020021x
: https://doi.org/10.2134/agronj1993.00021962008500020021x

69. High pH Treatments and the Alleviation of Soil Hydrophobicity on Golf Greens

Author:: Keith A. Karnok; Everett J. Rowland; Kim H. Tan
Source:: Agronomy journal 1993 v.85 no.5 pp. 983-986
ISSN:: 0002-1962
Subject:: Agrostis stolonifera var. palustris; hydrophobicity; soil pH; humic acids; fulvic acids; soil treatment; phytotoxicity; abiotic stress; air temperature; wettability; athletic fields; Georgia
Abstract:: ... Hydrophobic soil associated with localized dry spots (LDS) on creeping bentgrass (Agrostic palustris Huds.) putting greens has been shown to be caused by a humic and/or fulvic acid coating of the sand particles. Under laboratory conditions, humic acid begins to solubilize at pH 7.0 and is completely soluble at pH 9.5 or greater. The purpose of this study was to determine the potential of high pH t ...
DOI:: 10.2134/agronj1993.00021962008500050004x
: https://doi.org/10.2134/agronj1993.00021962008500050004x

70. Modeling Tall Fescue Cultivar Response to Applied Nitrogen

Author:: Allen R. Overman; Stanley R. Wilkinson
Source:: Agronomy journal 1993 v.85 no.6 pp. 1156-1158
ISSN:: 0002-1962
Subject:: cultivars; Festuca arundinacea; Epichloe coenophiala; models; nutrient uptake; dry matter accumulation; logit analysis; crop yield; sandy loam soils; infection; nitrogen fertilizers; Georgia
Abstract:: ... Models can be used to estimate yields and nutrient utilization by forage grasses. The objective of this study was to model response of three cultivars of tall fescue (Festuca arundinacea Schreb.) to applied N over a 3-yr period at Watkinsville, GA. The procedure uses analysis of variance to evaluate linear parameter A and the exponential parameters b and c for the logistic equation. It was shown t ...
DOI:: 10.2134/agronj1993.00021962008500060012x
: https://doi.org/10.2134/agronj1993.00021962008500060012x

71. Yield and Persistence of Tall Fescue in the Southeastern Coastal Plain after Removal of Its Endophyte

Author:: J.H. Bouton; R.N. Gates; D.P. Belesky; M. Owsley
Source:: Agronomy journal 1993 v.85 no.1 pp. 52-55
ISSN:: 0002-1962
Subject:: germplasm; endophytes; Festuca arundinacea; Epichloe coenophiala; dry matter accumulation; crop yield; mortality; infection; Georgia
Abstract:: ... The coastal plain of the southeastern USA lacks a dependable perennial cool season forage crop, but tall fescue (Festuca arundinacea Schreb.) germplasms have been developed which show greater persistence and yield than currently marketed cultivars in this region. Since these germplasms were found to be infected with the tall fescue endophyte (Acremonium coenophialum Morgan-Jones and Gams), the con ...
DOI:: 10.2134/agronj1993.00021962008500010011x
: https://doi.org/10.2134/agronj1993.00021962008500010011x

72. Crabgrass Control In Coastal Bermudagrass

Author:: A. E. Smith; L. D. Martin
Source:: Agronomy journal 1992 v.84 no.5 pp. 786-788
ISSN:: 0002-1962
Subject:: Cynodon dactylon; weed control; Digitaria sanguinalis; herbicides; crop damage; sandy soils; clay loam soils; sandy loam soils; application timing; application rate; Georgia
Abstract:: ... Many hectares of ‘Coastal’ bennudagrass [Cynodon dactylon (L.) Pers.] stands are lost during the second growing season after planting because of competition from large crabgrass [Digitaria sanquinalis (L.) Scop]. Experiments were conducted in southern Georgia on a Cecil (thermic, Typic Hapludults) sandy clay loam and central Georgia on a Greenville (clayey, thermic, Rhodic Kandiudults) sandy loam ...
DOI:: 10.2134/agronj1992.00021962008400050005x
: https://doi.org/10.2134/agronj1992.00021962008400050005x

73. Influence of Soil pH and Fertility Programs on Centipedegrass

Author:: B.J. Johnson; R.N. Carrow
Source:: Agronomy journal 1992 v.84 no.1 pp. 21-26
ISSN:: 0002-1962
Subject:: Eremochloa ophiuroides; lawns and turf; soil pH; NPK fertilizers; stand density; crop quality; application rate; Georgia
Abstract:: ... Improper Centipedegrass [Eremochloa ophiuroides (Munro) Hack] fertilization often results in a lower quality turf and progressive decline. Since the grass is best adapted to low fertility and the optimum pH range is uncertain, an experiment was initiated at Griffin, GA, to determine the influence of soil pH and fertility programs on centipedegrass. Soil pH did not influence the growth of Centipede ...
DOI:: 10.2134/agronj1992.00021962008400010005x
: https://doi.org/10.2134/agronj1992.00021962008400010005x

74. Iron Fertilization Effects on Shoot/Root Growth, Water Use, and Drought Stress of Creeping Bentgrass

Author:: D. S. Glinski; R. N. Carrow; K. J. Karnok
Source:: Agronomy journal 1992 v.84 no.3 pp. 496-503
ISSN:: 0002-1962
Subject:: crop quality; iron fertilizers; foliar application; water stress; heat stress; Agrostis stolonifera var. palustris; golf courses; Georgia
Abstract:: ... Creeping bentgrass (Agrostis palustris Huds.) golf greens in the U.S. Southeast are subjected to summer drought and heat stresses. This study was initiated to determine the effects of foliar Fe on PC-sufficient bentgrass shoot responses, root growth, and respones to drought stress. Ferrous sulfate (FS), Lawn-Plex (LP), and Sequestrene 330 (Seq. 330) (FeSO₄-7H₂O; Fe phosphate-citrate; and sodium fe ...
DOI:: 10.2134/agronj1992.00021962008400030027x
: https://doi.org/10.2134/agronj1992.00021962008400030027x

75. Model Evaluation for Perennial Grasses in the Southern United States

Author:: A. R. Overman; S. R. Wilkinson
Source:: Agronomy journal 1992 v.84 no.3 pp. 523-529
ISSN:: 0002-1962
Subject:: perennials; grasses; crop yield; nitrogen fertilizers; Georgia; Arkansas; Alabama; Florida
Abstract:: ... Models can be used to estimate yield response of grasses to applied N. This analysis was conducted to show variation of model parameters among grasses at the same location and differences among locations. The logistic equation was used to relate annual dry matter yield to applied N for four locations (Blairsville, GA; Fayetteville, AR; Thorsby, AL; Jay, FL) and five perennial grasses [bermudagrass ...
DOI:: 10.2134/agronj1992.00021962008400030031x
: https://doi.org/10.2134/agronj1992.00021962008400030031x

76. Nitrogen Fertilization of Tall Fescue-Birdsfoot Trefoil Mixtures

Author:: C. S. Hoveland; M. D. Richardson
Source:: Agronomy journal 1992 v.84 no.4 pp. 621-627
ISSN:: 0002-1962
Subject:: Lotus corniculatus; Festuca arundinacea; nitrogen fertilizers; crop yield; dry matter accumulation; nitrogen fixation; pastures; range management; climatic zones; application rate; highlands; mountains; Georgia
Abstract:: ... In mixtures with birdsfoot trefoil (Lotus corniculatus L.), tall fescue (Festuca urundinacea Schreb.) growth during early spring and autumn in north Georgia is limited. A study was conducted to determine if supplemental N fertilizer could extend the productive season of tall fescue-birdsfoot trefoil mixtures. Field experiments were conducted for 3 yr in the Mountain and Piedmont regions of Georgia ...
DOI:: 10.2134/agronj1992.00021962008400040017x
: https://doi.org/10.2134/agronj1992.00021962008400040017x

77. Quality and Growth Response of Centipedegrass to Extended Drought

Author:: J. E. Hook; W. W. Hanna; B. W. Maw
Source:: Agronomy journal 1992 v.84 no.4 pp. 606-612
ISSN:: 0002-1962
Subject:: Eremochloa ophiuroides; lawns and turf; drought tolerance; water stress; soil water content; dry environmental conditions; duration; crop quality; wilting; Georgia
Abstract:: ... Many of today's landscapes require turfgrasses that can survive extended drought periods without supplemental water. Centipedegrass [Eremochloa ophiuroides (Munro.) Hack.] has long been used as a low-maintenance lawn grass for the Southeast. A controlled drought study was used to determine the quality, growth, and recovery of centipedegrass held in stress for periods of 7 to 30 d. Common centipede ...
DOI:: 10.2134/agronj1992.00021962008400040013x
: https://doi.org/10.2134/agronj1992.00021962008400040013x

78. Yield Response of Bermudgrass and Bahiagrass to Applied Nitrogen and Overseeded Clover

Author:: A. R. Overman; S. R. Wilkinson; G. W. Evers
Source:: Agronomy journal 1992 v.84 no.6 pp. 998-1001
ISSN:: 0002-1962
Subject:: Cynodon dactylon; Trifolium incarnatum; Paspalum notatum; Trifolium subterraneum; Trifolium vesiculosum; nitrogen fertilizers; dry matter accumulation; crop yield; mathematical models; logit analysis; Georgia
Abstract:: ... Models can be used to describe yield response of grasses to applied N and other management factors. This analysis was performed to show interactions between applied N and overseeded clover on dry matter yield, and to estimate equivalent N supplied by clover. Data from three locations were used. At Watkinsville, GA both ‘Coastal’ and common bermudagrass [Cynodon dactylon (L.) Pers.] were overseeded ...
DOI:: 10.2134/agronj1992.00021962008400060018x
: https://doi.org/10.2134/agronj1992.00021962008400060018x

79. A Nitrogen-Phosphorus-Potassium Model For Forage Yield of Bermudagrass

Author:: A. R. Overman; A. Dagan; F. G. Martin; S. R. Wilkinson
Source:: Agronomy journal 1991 v.83 no.1 pp. 254-258
ISSN:: 0002-1962
Subject:: Cynodon dactylon; nitrogen fertilizers; potassium fertilizers; phosphorus fertilizers; crop yield; forage; dry matter accumulation; growth models; mathematical models; application rate; Georgia
Abstract:: ... A logistic equation was used to relate annual dry matter yield of Coastal bermudagrass [Cynodon dactylon (L.) Pers.] to applied N, P, and K. Yield data from a 4 ✕ 4 ✕ 4 (N ✕ P ✕ K) factorial experiment were analyzed. The second order Newton-Raphson procedure for nonlinear regression was used to estimate the seven parameters of the model. A correlation coefficient of 0.9884 was obtained with the mo ...
DOI:: 10.2134/agronj1991.00021962008300010057x
: https://doi.org/10.2134/agronj1991.00021962008300010057x

80. Mulch Effect on Soil Properties and Tomato Growth Using Micro-Irrigation

Author:: James A. Tindall; R. B. Beverly; D. E. Radcliffe
Source:: Agronomy journal 1991 v.83 no.6 pp. 1028-1034
ISSN:: 0002-1962
Subject:: Solanum lycopersicum var. lycopersicum; microirrigation; irrigation scheduling; soil water content; rooting; crop yield; soil temperature; soil water potential; soil pH; soil density; carbon; soil organic matter; root systems; soil strength; straw mulches; plastic film; Georgia
Abstract:: ... Although use of micro-irrigation has risen steadily in Georgia, few studies have been reported describing its effect on yield or rooting distribution of tomato (Licopersicon esculentum). The objective of this experiment was to determine the effects of mulch type (plastic mesh and straw) and micro-irrigation on soil physical properties and growth of ‘Celebrity’ tomato. In 1986, an experiment was in ...
DOI:: 10.2134/agronj1991.00021962008300060019x
: https://doi.org/10.2134/agronj1991.00021962008300060019x

81. Root Hair Occurrence anld Variation with Environment

Author:: C. A. Meisner; K. J. Karnok
Source:: Agronomy journal 1991 v.83 no.5 pp. 814-818
ISSN:: 0002-1962
Subject:: Arachis hypogaea; root hairs; soil types; water stress; growth chambers; greenhouses; field experimentation; mycorrhizal fungi; infection; Georgia
Abstract:: ... Early literature on peanut [Arachis hypogcrea (L.)] indicates the existence of two forms of root hairs: (i) a rosette form of root hair (4 mm long) occurring; radially where a lateral root initiates from a primary root, and (ii) shorter (0.30 mm), more profuse root hairs occurring along root lengths usually behind the root tip. Since little is known about the factors ithat influence peanut root ha ...
DOI:: 10.2134/agronj1991.00021962008300050008x
: https://doi.org/10.2134/agronj1991.00021962008300050008x

82. Harvest Management Effects on Alfalfa Yield and Root Carbohydrates in Three Georgia Environments

Author:: L. G. Brown; C. S. Hoveland; K. J. Karnok
Source:: Agronomy journal 1990 v.82 no.2 pp. 267-273
ISSN:: 0002-1962
Subject:: Medicago sativa; cultivars; temperature; harvest date; crop yield; forage; roots; carbohydrates; seasonal variation; dormancy; Georgia
Abstract:: ... Alfalfa (Medicago sativa L.) hay harvest management may need to be modified in the southeastern USA due to the mild winters and hotter summers compared with northern production areas. The objectives of this study were to evaluate the effect of three harvest treatments (10, 50, and 10% bloom until midsummer when one harvest was delayed until 50% bloom-referred to as “summer rest” management) on her ...
DOI:: 10.2134/agronj1990.00021962008200020018x
: https://doi.org/10.2134/agronj1990.00021962008200020018x

83. Herbicide × Annual Fertility Programs Influence on Creeping Bentgrass Performance

Author:: B. J. Johnson
Source:: Agronomy journal 1990 v.82 no.1 pp. 27-33
ISSN:: 0002-1962
Subject:: crop quality; ethofumesate; pesticide application; autumn; fertilizer application; lawns and turf; spring; oxadiazon; Agrostis stolonifera; bensulide; golf courses; Georgia
Abstract:: ... Creeping bentgrass (Agrostis palustris Huds.) is increasing in the use of golf greens in the upper South where heat and drought stress occurs. Research was initiated to determine the effects of annual fertilizer programs on performance of creeping bentgrass treated with spring and fall-applied herbicides. Treatments were arranged in a split-split block with subunits in strips. Fertilizer programs ...
DOI:: 10.2134/agronj1990.00021962008200010006x
: https://doi.org/10.2134/agronj1990.00021962008200010006x

84. Localized Dry Spots as Caused by Hydrophobic Sands on Bentgrass Greens

Author:: K. A. Tucker; K. J. Karnok; D. E. Radcliffe; G. Landry; R. W. Roncadori; K. H. Tan
Source:: Agronomy journal 1990 v.82 no.3 pp. 549-555
ISSN:: 0002-1962
Subject:: agronomy; contact angle; droplets; hydrophobicity; lawns and turf; pH; particle size; sand; soil organic matter; surveys; topsoil; turf grasses; water content; Georgia
Abstract:: ... Construction of creeping bentgrass (Agrosfis palustris Huds.) golf greens with topsoil mixtures that contain 90% or more sand has led to the appearance of irregularly shaped areas of wilted or dead turfgrass known as localized dry spots (LDS). Objectives were to determine by means of a survey the association between management practices and the severity of LDS, and to compare the chemical and phys ...
DOI:: 10.2134/agronj1990.00021962008200030023x
: https://doi.org/10.2134/agronj1990.00021962008200030023x

85. Yield and Botanical Composition of Alfalfa-Bermudagrass Mixtures

Author:: R. H. Brown; G. T. Byrd
Source:: Agronomy journal 1990 v.82 no.6 pp. 1074-1079
ISSN:: 0002-1962
Subject:: Medicago sativa; Cynodon dactylon; crop yield; botanical composition; nitrogen fertilizers; forage; nitrogen content; application rate; Georgia
Abstract:: ... The regions of adaptation of alfalfa (Medicago sativa L.) and bermudagrass [Cynodon dactylon (L.) Pers.) overlap in the southeastern USA, but the compatibility of these species in a mixture has not been described. Two field experiments were conducted to compare the yield and botanical composition of alfalfa-bermudagrass mixtures with each species grown alone. In the first experiment ‘Apollo’ alfal ...
DOI:: 10.2134/agronj1990.00021962008200060009x
: https://doi.org/10.2134/agronj1990.00021962008200060009x

86. Alfalfa Persistence and Regrowth Potential under Continuous Grazing

Author:: S. R. Smith; J. H. Bouton; C. S. Hoveland
Source:: Agronomy journal 1989 v.81 no.6 pp. 960-965
ISSN:: 0002-1962
Subject:: cultivars; pastures; carbohydrates; Medicago sativa; plant density; regrowth; grazing intensity; stand characteristics; Georgia
Abstract:: ... Alfalfa (Medicago saliva L.) generally does not persist well under continuous grazing. Experiments were conducted under continuous grazing to compare the persistence and regrowth potential of an alfalfa germplasm (Georgia—Grazed Collection, GA-GC), selected for continuous grazing, with two hay-type (Apollo and Florida 77) and two grazing-type (Travois and Spredor II) cultivars. The germplasm and c ...
DOI:: 10.2134/agronj1989.00021962008100060023x
: https://doi.org/10.2134/agronj1989.00021962008100060023x

87. Environmental Effects on Nitrogen Dynamics in Soybean under Conservation and Clean Tillage Systems

Author:: L. A. Harper; J. E. Giddens; G. W. Langdale; R. R. Sharpe
Source:: Agronomy journal 1989 v.81 no.4 pp. 623-631
ISSN:: 0002-1962
Subject:: Glycine max; minimum tillage; nitrogen fixation; environmental factors; agronomic traits; Georgia
Abstract:: ... Soybean [Glycine max (L.) Merr.) obtains required N from the soil via root uptake of mineralized organic matter and fertilizer, and from the air by symbiotic gaseous N₂ fixation and ammonia (NH₃) absorption. The purpose of this study was to evaluate environmental and tillage effects on dynamic N transport under conservation (NT) and clean tillage (CT) management systems. Soil, plant, and microclim ...
DOI:: 10.2134/agronj1989.00021962008100040015x
: https://doi.org/10.2134/agronj1989.00021962008100040015x

88. Evaluation of Soybean Zinc and Manganese Requirements by the M-DRIS and Sufficiency Range Methods

Author:: W. B. Hallmark; R. B. Beverly; M. B. Parker; J. F. Adams; F. C. Boswell; K. Ohki; L. M. Shuman; D. O. Wilson
Source:: Agronomy journal 1989 v.81 no.5 pp. 770-776
ISSN:: 0002-1962
Subject:: Glycine max; calcium; copper; databases; magnesium; manganese; nutrient deficiencies; potassium; regression analysis; soybeans; zinc; Alabama; Georgia; Louisiana
Abstract:: ... The modified-diagnosis and recommendation integrated system (M-DRIS) and sufficiency range method (SUM) have not been compared for accuracy of Zn and Mn diagnoses for soybean [Glycine max (L.) Merr.]. Consequently, M-DRIS and SRM were evaluated for diagnosing Zn deficiencies for two site-years in Alabama, and Mn deficiencies and sufficiencies for three site-years in Georgia. The SRM was more accur ...
DOI:: 10.2134/agronj1989.00021962008100050015x
: https://doi.org/10.2134/agronj1989.00021962008100050015x

89. Forage Preservation Method Influences on Tannin Concentration, Intake, and Digestibility of Sericea Lespedeza by Sheep

Author:: T. H. Terrill; W. R. Windham; C. S. Hoveland; H. E. Amos
Source:: Agronomy journal 1989 v.81 no.3 pp. 435-439
ISSN:: 0002-1962
Subject:: digestible protein; freezing; nitrogen; sheep; Lespedeza cuneata; tannins; nutrient balance; chemical constituents of plants; lignin; Georgia
Abstract:: ... Livestock do not like to graze high-tannin (HT) sericea lespedeza [Lespedeza cuneata (Dum-Cours) G. Don], but readily consume it as hay. Intake and digestibility of fresh-frozen (FF) and field-dried (FD) HT and low-tannin (LT) sericea were studied in a feeding trial with sheep (Ovis spp.) in a 2 ✕ 2 factorial with a 4 ✕ 4 Latin square arrangement of treatments. Tannin concentrations were 181,87,31 ...
DOI:: 10.2134/agronj1989.00021962008100030007x
: https://doi.org/10.2134/agronj1989.00021962008100030007x

90. Growth, Grain Yield, and Tissue Mineral Concentration of Corn Treated with Ethephon

Author:: D. G. Bullock; P. L. Raymer
Source:: Agronomy journal 1989 v.81 no.3 pp. 480-483
ISSN:: 0002-1962
Subject:: height; plant characteristics; Zea mays; hybrids; ethephon; crop yield; lodging; grains; Georgia
Abstract:: ... Corn (Zea Mays L.) lodging limits grain yield (yield) in the southeastern USA. Ethephon (2-chloroethyl-phosphonic acid) can reduce lodging, but its effect on tissue mineral concentration is unknown. The objectives of this study were to measure the effect of ethephon application rate and time on mineral concentration of tissue, yield, and lodging of corn. Field experiments were conducted during 198 ...
DOI:: 10.2134/agronj1989.00021962008100030017x
: https://doi.org/10.2134/agronj1989.00021962008100030017x

91. Johnsongrass Control in Conventionally Tilled and No-Tilled Soybean with Foliar-Applied Herbicides

Author:: P. A. Banks; S. A. Bundschuh
Source:: Agronomy journal 1989 v.81 no.5 pp. 757-760
ISSN:: 0002-1962
Subject:: Glycine max; no-tillage; pesticide application; foliar application; Sorghum halepense; glyphosate; sulfonates; Georgia
Abstract:: ... Perennial johnsongrass [Sorghum halepense (L.) Pers.] is costly and difficult to control in soybean [Glycine max (L.) Merr.]. Selective and nonselective foliar-active herbicides were evaluated for activity and residual control of rhizome johnsongrass in conventional- and no-till soybean culture. Broadcast foliar applications of selective graminacides and rope-wick applications of nonselective foli ...
DOI:: 10.2134/agronj1989.00021962008100050012x
: https://doi.org/10.2134/agronj1989.00021962008100050012x

92. Row Spacing and Plant Population Effects on Yield Components of Soybean

Author:: W. J. Ethredge; D. A. Ashley; J. M. Woodruff
Source:: Agronomy journal 1989 v.81 no.6 pp. 947-951
ISSN:: 0002-1962
Subject:: cultivars; Glycine max; seeds; row spacing; irrigated conditions; harvest index; stand characteristics; mortality; Georgia
Abstract:: ... Information is needed to characterize soybean [Glycine max (L.) Merr.] plant responses where cultural practices and environmental conditions are maintained at a level conducive to high yield. Field studies were conducted in 1985 and 1986 to determine the effect of row spacing and plant population on seed yield and yield components of soybean. Two determinate Maturity Group V cultivars, Essex and D ...
DOI:: 10.2134/agronj1989.00021962008100060020x
: https://doi.org/10.2134/agronj1989.00021962008100060020x

93. Design and Use of a Fully Automated Portable Rain Shelter System

Author:: C. S. Kvien; W. D. Branch
Source:: Agronomy journal 1988 v.80 no.2 pp. 281-283
ISSN:: 0002-1962
Subject:: agronomy; automation; coastal plains; drought; irrigation; rain; water stress; Georgia
Abstract:: ... Automated rain shelters are usually fixed to one site. A threeunit, portable, fully automated rain shelter system has been constructed for plant water stress research in Georgia. Each structure has a roof 8.6 by 7.2 m attached to four posts. Welded to the end of each post is an automotive wheel and tire assembly. Two smaller wheels (drive shaft driven by a geared-down 746-W 220 VAC motor) contact ...
DOI:: 10.2134/agronj1988.00021962008000020027x
: https://doi.org/10.2134/agronj1988.00021962008000020027x

94. Frequency of Fertilizer Applications and Centipedegrass Performance

Author:: B. J. Johnson; R. N. Carrow
Source:: Agronomy journal 1988 v.80 no.6 pp. 925-929
ISSN:: 0002-1962
Subject:: Eremochloa ophiuroides; lawns and turf; nitrogen fertilizers; seasons; crop quality; color; plant density; field experimentation; split application; Georgia
Abstract:: ... Centipedegrass [Eremochloa ophiuroides (Munro) Hack.] is a low maintenance grass widely used throughout the southeastern United States. Improper fertilization continues to be a major concern and results in Centipedegrass decline. With low fertilization, the grass has a pale green color that is often unacceptable to many turfgrass managers. This research was initiated to determine the influence of ...
DOI:: 10.2134/agronj1988.00021962008000060017x
: https://doi.org/10.2134/agronj1988.00021962008000060017x

95. Bermudagrass Turf Response to Mowing Practices and Fertilizer

Author:: B. J. Johnson; R. N. Carrow; R. E. Burns
Source:: Agronomy journal 1987 v.79 no.4 pp. 677-680
ISSN:: 0002-1962
Subject:: Cynodon dactylon; nitrogen; potassium; mowing; mowers; crop quality; fertilizer application; plant density; thatch; Cynodon transvaalensis; Lanzia; Georgia
Abstract:: ... The overall quality of ‘Tifway’ bermudagrass [Cynodon transvanlensis Burtt-Davies × Cynodon dactylon (L.) Pers.] turf is often determined by the type of mower and fertilizer, and whether clippings are removed or returned. The purpose of this field research study was to determine bermudagrass turf response to N at 100 to 300 kg ha⁻¹ and to K at 50 to 300 kg ha⁻¹ as related to mowing treatments. Tre ...
DOI:: 10.2134/agronj1987.00021962007900040019x
: https://doi.org/10.2134/agronj1987.00021962007900040019x

96. Effect of Supplemental Irrigation on the Yield of Coastal Bermudagrass in the Southeastern United States

Author:: G. W. Burton; J. L. Butler; R. E. Hellwig
Source:: Agronomy journal 1987 v.79 no.3 pp. 423-424
ISSN:: 0002-1962
Subject:: Cynodon dactylon; cultivars; irrigation; crop yield; protein content; Georgia
Abstract:: ... The objective of this study was to determine the effect of supplemental irrigation on the yield of Coastal bermudagrass [Cynodon dactylon (L.) Pers.] when fertilized annually with 700 kg/ha of N plus adequate P and K, and usually cut at 24-day intervals. Paired plots, one irrigated to keep soil moisture above 25 MPa, the other not irrigated and replicated six times, received 100 kg/ha of N in mid- ...
DOI:: 10.2134/agronj1987.00021962007900030002x
: https://doi.org/10.2134/agronj1987.00021962007900030002x

97. Effects of Tillage Practices on Cotton Double Cropped with Wheat

Author:: Shelby H. Baker
Source:: Agronomy journal 1987 v.79 no.3 pp. 513-516
ISSN:: 0002-1962
Subject:: tillage; Triticum aestivum; Gossypium hirsutum; double cropping; crop yield; Georgia
Abstract:: ... To reduce production cost, reduce land erosion and increase profits per acre, double cropping and reduced tillage are becoming a part of production systems across the United States. Tillage studies with double crop (DC) wheat (Triticum aestivum L.) and cotton (Gossypium hirsutum L.) were conducted at two Georgia locations, Tifton (1982–1984) and Plains (1981–1984). At Tifton, continuous tillage tr ...
DOI:: 10.2134/agronj1987.00021962007900030022x
: https://doi.org/10.2134/agronj1987.00021962007900030022x

98. Fungal Endophyte Infection-Loline Derivative Alkaloid Concentration of Grazed Tall Fescue

Author:: D. P. Belesky; J. D. Robbins; J. A. Stuedemann; S. R. Wilkinson; O. J. Devine
Source:: Agronomy journal 1987 v.79 no.2 pp. 217-220
ISSN:: 0002-1962
Subject:: pyrrolizidine alkaloids; Festuca arundinacea; Epichloe coenophiala; grazing; seasonal variation; Acremonium; infection; nitrogen fertilizers; Georgia
Abstract:: ... Impaired animal performance on tall fescue (Festuca arundinacea, Schreb.) pasture has been associated with the presence of a fungal endophyte (Acremonium coenophialum). A number of alkaloids, including the loline derivatives N-formyl and N-acetyl loline, occur in endophyte infected tall fescue. A study was conducted at Watkinsville, GA, on a Cecil sandy loam (Typic hapludult) to examine the influe ...
DOI:: 10.2134/agronj1987.00021962007900020009x
: https://doi.org/10.2134/agronj1987.00021962007900020009x

99. Harvest Methods for Estimated Ethanol Yields from Relative Fermentable Carbohydrate Accumulation in Maize Hybrids

Author:: N. W. Widstrom; M. E. Carr; M. O. Bagby; L. T. Black
Source:: Agronomy journal 1987 v.79 no.4 pp. 758-760
ISSN:: 0002-1962
Subject:: Zea mays; hybrids; harvesting; ethanol; carbohydrates; yields; Georgia
Abstract:: ... Recurring energy shortages suggest the need for evaluation of alternate fuel energy sources. Conversion of plant carbohydrate to ethanol, as a fuel source, is considered a viable option with efficient energy-producing crops such as maize, Zea mays L. Three maize hybrids (‘Coker 77’, ‘Pioneer 3369A’, and ‘Sokota Sugar Chop’) were grown in a Norfolk loamy sand (fine-loamy, silicious Typic Paleudult) ...
Handle:: 10113/23817
DOI:: 10.2134/agronj1987.00021962007900040035x
: https://doi.org/10.2134/agronj1987.00021962007900040035x

100. Increasing Importance and Control of Mayweed Chamomile in Forage Crops

Author:: A. E. Smith
Source:: Agronomy journal 1987 v.79 no.4 pp. 657-660
ISSN:: 0002-1962
Subject:: Anthemis cotula; forage crops; weed control; herbicides; allelopathy; digestibility; Georgia
Abstract:: ... Mayweed chamomile (Anthemis cotula L.) is a cool-season annual weed that germinates during March and matures by mid-May in the southeastern United States. The economic importance of this weed in the pasture ecosystem has not been determined. The objectives of this study were: (i) to determine the forage quality of mayweed chamomile foliage; (ii) to survey the potential allelopathic influence of ma ...
DOI:: 10.2134/agronj1987.00021962007900040015x
: https://doi.org/10.2134/agronj1987.00021962007900040015x

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1. Winter legume cover effects on yields of biomass‐sorghum and cotton in Georgia

2. Effect of post shelling storage environments on seed germination and vigor of peanut

3. Moran eigenvector filtering of multi-year yield data with application to zone development

4. Tillage and Irrigation Impact on Early and Late Maturing Cotton Cultivars

5. Yield and Nutrient Dynamics in Conventional and Organic Sweet Corn Production Systems

6. Soil-Test Biological Activity with the Flush of CO2: IV. Fall-Stockpiled Tall Fescue Yield Response to Applied Nitrogen

7. Strip Tillage Implements for Single and Twin Row Peanut

8. Delineating Soybean Maturity Groups across the United States

9. Optimizing Agronomic Practices for Clover Persistence and Corn Yield in a White Clover–Corn Living Mulch System

10. Predicting Heat Stress in Cotton Using Probabilistic Canopy Temperature Forecasts

11. El Niño–Southern Oscillation Effects on Winter Wheat in the Southeastern United States

12. Native Plant Establishment on Georgia Roadsides

13. Acetyl-CoA Carboxylase Herbicide Tolerance in Bermudagrass

14. Effect of Cultivar, Irrigation, and Soil Calcium on Runner Peanut Response to Gypsum

15. Forecasting Cotton Yield in the Southeastern United States using Coupled Global Circulation Models

16. Impact of Planting Date and Hybrid on Early Growth of Sweet Corn

17. Yield and Plant Growth Response of Peanut to Midseason Forage Harvest

18. Cotton Subsurface Drip and Overhead Irrigation Efficiency, Maturity, Yield, and Quality

19. Economic Comparison of Transgenic and Nontransgenic Cotton Production Systems in Georgia

20. Nitrogen Storage with Cover Crops and Nitrogen Fertilization in Tilled and Nontilled Soils

21. No-Till Corn Productivity in a Southeastern United States Ultisol Amended with Poultry Litter

22. Yield, Quality, and Fruit Distribution in Bollgard/Roundup Ready and Bollgard II/Roundup Ready Flex Cottons

23. Accumulation and Crop Uptake of Soil Mineral Nitrogen as Influenced by Tillage, Cover Crops, and Nitrogen Fertilization

24. Potential for Using Sunn Hemp as a Source of Biomass and Nitrogen for the Piedmont and Coastal Plain Regions of the Southeastern USA

25. Conservation Tillage and Cover Crop Influences on Cotton Production on a Southeastern U.S. Coastal Plain Soil

26. Effects of an Uncomposted Municipal Waste Processing By-Product on Prairie Grass Establishment

27. Evaluating Techniques for Determining Tillage Regime in the Southeastern Coastal Plain and Piedmont

28. Evaluation of the RZWQM for Simulating Tile Drainage and Leached Nitrate in the Georgia Piedmont

29. Potential Interaction of Pendimethalin and Systemic Insecticides for Thrips Control in Cotton

30. Biculture Legume–Cereal Cover Crops for Enhanced Biomass Yield and Carbon and Nitrogen

31. Calibration of the Root Zone Water Quality Model for Simulating Tile Drainage and Leached Nitrate in the Georgia Piedmont

32. Improving the Management of Dicot Weeds in Peanut with Narrow Row Spacings and Residual Herbicides

33. Obligatory Summer-Dormant Cool-Season Perennial Grasses for Semiarid Environments of the Southern Great Plains

34. Tillage, Cover Crops, and Nitrogen Fertilization Effects on Cotton and Sorghum Root Biomass, Carbon, and Nitrogen

35. Yield, quality, and profitability of cotton produced at varying plant densities

36. Bermudagrass Management in the Southern Piedmont USA

37. Bermudagrass management in the Southern Piedmont USA: VIII. Soil pH and nutrient cations

38. Bermudagrass management in the Southern Piedmont USA: X. Coastal productivity and persistence in response to fertilization and defoliation regimes

39. Comparison of Tillage Types and Frequencies for Cotton on Southern Piedmont Soil

40. Grazing-Tolerant Alfalfa Cultivars Perform Well under Rotational Stocking and Hay Management

41. Losses in Yield, Quality, and Profitability of Cotton from Improper Harvest Timing

42. Soil Organic Matter and Tomato Yield following Tillage, Cover Cropping, and Nitrogen Fertilization

43. Discriminating Crop Residues from Soil by Shortwave Infrared Reflectance

44. Herbage Accumulation of Three Bahiagrass Populations during the Cool Season

45. Tillage and Pest Management Considerations in a Peanut–Cotton Rotation in the Southeastern Coastal Plain

46. Tillage, Cover Crop, and Kill-Planting Date Effects on Corn Yield and Soil Nitrogen

47. Agronomic and Economic Analyses of Cotton Starter Fertilizers

48. Evaluating Methods for Simulating Soybean Cultivar Responses Using Cross Validation

49. Spatial Distribution of Extractable Phosphorus, Potassium, and Magnesium as Influenced by Fertilizer and Tall Fescue Endophyte Status

50. Cover Crop Root Distribution and Its Effects on Soil Nitrogen Cycling

51. Establishment of ‘Tifton 9’ Bahiagrass in Response to Planting Date and Seed Coat Removal

52. Nitrogen and Defoliation Management: Effects on Yield and Nutritive Value of Flaccidgrass

53. Seed Yield and Seed Quality Response of Pensacola and Improved Bahiagrasses to Fertilization

54. AEGIS/WIN: A Computer Program for the Application of Crop Simulation Models Across Geographic Areas

55. Comparison of Residue Decomposition Models Used in Erosion Prediction

56. Influence of Seeding Variables on ‘Tifton 9’ Bahiagrass Establishment

57. Performance and Stability of Brachytic and Normal-Stemmed Isolines of Soybean

58. Subsoil Nitrate Uptake by Grain Pearl Millet

59. Tall Fescue Response to Clipping and Competition with No-Till Seeded Alfalfa as Affected by Fungal Endophyte

60. Turfgrass Response to Slow-Release Nitrogen Fertilizers

61. Effects of Water Deficit Stress on Competitive Interaction of Peanut and Sicklepod

62. Pod Yield and Stem Rot Evaluation of Peanut Cultivars Treated with Tebuconazole

63. Rhizoma Peanut and Alfalfa Productivity and Nutrient Composition in Central Georgia

64. Populations of Foliage-Inhabiting Arthropods on Soybean with Reduced Tillage and Herbicide Use

65. Fenarimol Tolerance of Roughstalk Bluegrass Overseeded in Bermudagrass Greens

66. Influence of Plant Growth Regulators and Mowing on Two Bermudagrasses

67. Crop Performance Trials under Irrigated and Dryland Conditions

68. Frequency of Plant Growth Regulator and Mowing Treatments: Effects on Injury and Suppression of Centipedegrass

69. High pH Treatments and the Alleviation of Soil Hydrophobicity on Golf Greens

70. Modeling Tall Fescue Cultivar Response to Applied Nitrogen