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- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
23. 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
31. 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
51. 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
59. 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
- 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
- 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
- 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
- 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
64. 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
65. 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
- 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
- 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
68. 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- Author:
- L. A. Harper; R. R. Sharpe>; G. W. Langdale; J. E. Giddens
- Source:
- Agronomy journal 1987 v.79 no.6 pp. 965-973
- ISSN:
- 0002-1962
- Subject:
- Triticum aestivum; biogeochemical cycles; ammonia; isotope labeling; translocation (plant physiology); Georgia
- Abstract:
- ... An understanding of N cycling in the soil-plant-atmosphere components of wheat (Triticum aestivum L.) production systems is necessary to maximize yield and quality. The objectives of this study were to examine N cycling and observe the effects of N surplus and deficit on N absorption/desorption in the soil and atmosphere and to evaluate translocation within the plant. Soil, plant, and microclimate ...
- DOI:
- 10.2134/agronj1987.00021962007900060004x
- https://doi.org/10.2134/agronj1987.00021962007900060004x
- Author:
- S. R. Wilkinson; O. J. Devine; D. P. Belesky; J. W. Dobson; R. N. Dawson
- Source:
- Agronomy journal 1987 v.79 no.4 pp. 685-690
- ISSN:
- 0002-1962
- Subject:
- Zea mays; Festuca arundinacea; no-tillage; intercropping; crop yield; nitrogen; fertilizer application; plant competition; Georgia
- Abstract:
- ... Conservation tillage methods are needed for grain production on the sloping, erodible soils of the southern Appalachian mountains. The purpose of this study was to determine rainfed no-till corn (Zea mays L.) production in viable tall fescue (Festuca arundinacea Schreb.) sods relative to conventional tillage and complete kill no-tillage systems. Main plot treatments were: (i) conventional tillage ...
- DOI:
- 10.2134/agronj1987.00021962007900040021x
- https://doi.org/10.2134/agronj1987.00021962007900040021x
- Author:
- R. N. Carrow; B. J. Johnson; R. E. Burns
- Source:
- Agronomy journal 1987 v.79 no.3 pp. 524-530
- ISSN:
- 0002-1962
- Subject:
- Cynodon dactylon; nitrogen; potassium; aeration; top dressings; thatch; crop quality; plant density; color; fungal diseases of plants; Cynodon transvaalensis; Lanzia; Georgia
- Abstract:
- ... Secondary cultural practices, such as core aeration, vertical mowing, and topdressing, are being used on homelawn turf to a greater extent, even though specific problems may not warrant their application. In a field study (clayey, kaolinitic, thermic Typic Hapludult soil), we applied secondary cultural practices on ‘Tifway’ bermudagrass [Cynodon dactylon (L.) Pers. ✕ C. transvaalensis (Burtt-Davis ...
- DOI:
- 10.2134/agronj1987.00021962007900030025x
- https://doi.org/10.2134/agronj1987.00021962007900030025x
- Author:
- D. S. NeSmith; W. L. Hargrove; D. E. Radcliffe; E. W. Tollner; H. H. Arioglu
- Source:
- Agronomy journal 1987 v.79 no.3 pp. 570-576
- ISSN:
- 0002-1962
- Subject:
- Glycine max; Triticum aestivum; double cropping; Ultisols; tillage; crop residues; soil temperature; soil water content; bulk density; crop yield; roots; Georgia
- Abstract:
- ... Doublecropping soybean [Glycine max (L.) Merrill] and wheat (Triticum aestivum L.) has become widespread in the southeastern United States. This has encouraged use of reduced and no-tillage systems, but burning of the wheat straw prior to planting soybean has also become common. A 2-yr field study was initiated on a Greenville sandy clay loam (Rhodic Paleudult) in Georgia to evaluate effects of ti ...
- DOI:
- 10.2134/agronj1987.00021962007900030034x
- https://doi.org/10.2134/agronj1987.00021962007900030034x
- Author:
- B. J. Johnson
- Source:
- Agronomy journal 1987 v.79 no.6 pp. 992-996
- ISSN:
- 0002-1962
- Subject:
- Agrostis stolonifera; bensulide; oxadiazon; phytotoxicity; pesticide application; application timing; benefin; Georgia
- Abstract:
- ... Creeping bentgrass (Agrostis palustris Huds.) use for golf greens is rapidly expanding in the South where heat and drought stress is higher for this species. To maintain a good quality weed-free turfgrass, herbicides are often necessary. The purpose of this research was to determine the tolerance of ‘Penncross’ creeping bentgrass greens to herbicides applied on different dates and at different fre ...
- DOI:
- 10.2134/agronj1987.00021962007900060008x
- https://doi.org/10.2134/agronj1987.00021962007900060008x
- Author:
- C. S. Kvien; R. W. Weaver; J. E. Pallas
- Source:
- Agronomy journal 1986 v.78 no.6 pp. 954-958
- ISSN:
- 0002-1962
- Subject:
- Arachis hypogaea; nutrient transport; nitrogen; dry matter accumulation; pods; plant development; translocation (plant physiology); Georgia
- Abstract:
- ... A field experiment was conducted to gain a greater understanding of vegetative N mobilization in the peanut (Arachis hypogaea L.) during the pod filling period. Vegetative tissue was labeled with foliarly applied ¹⁵NH₄SO₄ prior to initial pod set and mobilization of the incorporated ¹⁵N into various plant parts was then followed from initial pod set until harvest. We concluded from our analysis of ...
- DOI:
- 10.2134/agronj1986.00021962007800060004x
- https://doi.org/10.2134/agronj1986.00021962007800060004x
- Author:
- J. L. Walworth; M. E. Summer; R. A. Isaac; C. O. Plank
- Source:
- Agronomy journal 1986 v.78 no.6 pp. 1046-1052
- ISSN:
- 0002-1962
- Subject:
- plant nutrition; Medicago sativa; tissue analysis; crop yield; soil fertility; nutrient requirements; chemical constituents of plants; Georgia; Midwestern United States
- Abstract:
- ... Foliar tissue norms were developed for ‘Apollo’ alfalfa (Medicago sativa L.) grown on two highly weathered soils in the Georgia Piedmont for use in the diagnosis and recommendation integrated systems (DRIS). These norms were generated from a data bank comprised of tissue nutrient composition and plant yield and consisting of 3915 field observations. A yield of 3.5 Mg ha⁻¹ per cut was used to divid ...
- DOI:
- 10.2134/agronj1986.00021962007800060022x
- https://doi.org/10.2134/agronj1986.00021962007800060022x
- Author:
- B. J. Johnson
- Source:
- Agronomy journal 1986 v.78 no.3 pp. 495-498
- ISSN:
- 0002-1962
- Subject:
- Cynodon; Lolium perenne; Poa annua; weed control; ethofumesate; pesticide application; mowing; lawns and turf; golf courses; Georgia
- Abstract:
- ... Annual bluegrass (Poa annua L.) is a major weed in bermudagrass (Cynodon spp.) golf greens overseeded with cool-season grasses. Herbicides are often ineffective or may injure the overseeded grass. This study was initiated to determine the effects of sequential vertical mowing and ethofumesate [(±)-2-ethoxy-2,3-dihydro-3,3-dimethyl- 5-benzofuranyl methanesulfonate)] treatments on a bermudagrass gre ...
- DOI:
- 10.2134/agronj1986.00021962007800030021x
- https://doi.org/10.2134/agronj1986.00021962007800030021x
- Author:
- M. B. Parker; M. E. Walker
- Source:
- Agronomy journal 1986 v.78 no.4 pp. 614-620
- ISSN:
- 0002-1962
- Subject:
- plant nutrition; Arachis hypogaea; nutrient deficiencies; soil pH; regression analysis; developmental stages; soil analysis; crop yield; Georgia
- Abstract:
- ... Manganese deficiency of peanut (Arachis hypogaea L.) is a common problem on some soils of the Coastal Plain region of the southern USA. Information is limited, however, on the concentration of Mn required in the peanut plant. ‘Florunner’ peanut was grown on a Pelham sand (loamy, siliceous, thermic, Arenic Paleaquult) to determine soil pH and Mn effects on Mn nutrition of peanut. Soil-applied Mn tr ...
- DOI:
- 10.2134/agronj1986.00021962007800040011x
- https://doi.org/10.2134/agronj1986.00021962007800040011x
- Author:
- Warren G. Monson; T. Powell Gaines
- Source:
- Agronomy journal 1986 v.78 no.3 pp. 522-523
- ISSN:
- 0002-1962
- Subject:
- Cynodon dactylon; cultivars; boron; crop yield; in vitro digestibility; dry matter accumulation; dietary supplements; Georgia
- Abstract:
- ... Boron (B) has been recognized for many years as an essential element for plant growth, but there is limited information available on its effects on forage grasses. This 4-yr study was initiated to examine the effects of B rates of 0, 1.1, 2.2, or 4.4 kg ha⁻¹ on yield and quality of established stands of seven bermudagrasses [Cynodon dactylon (L.) Pers.] growing on a Tifton sandy loam soil (Plinthi ...
- DOI:
- 10.2134/agronj1986.00021962007800030026x
- https://doi.org/10.2134/agronj1986.00021962007800030026x
- Author:
- W. L. Hargrove
- Source:
- Agronomy journal 1986 v.78 no.1 pp. 70-74
- ISSN:
- 0002-1962
- Subject:
- Sorghum bicolor; Fabaceae; cover crops; green manures; no-tillage; soil fertility; yields; nitrogen content; crop rotation; sandy loam soils; Georgia
- Abstract:
- ... Because winter legume cover crops may provide significant quantities of N while conserving soil and water resources, the role of legumes in conservation tillage production systems warrants renewed attention. The objectives of this study were (i) to determine the N contribution of several legumes to a subsequent crop of grain sorghum [Sorghum bicolor (L.) Moench] under no-tillage management and (ii ...
- DOI:
- 10.2134/agronj1986.00021962007800010016x
- https://doi.org/10.2134/agronj1986.00021962007800010016x
- Author:
- A. M. O. Elwali; G. J. Gascho; M. E. Sumner
- Source:
- Agronomy journal 1985 v.77 no.3 pp. 506-508
- ISSN:
- 0002-1962
- Subject:
- plant nutrition; Zea mays; fertilizers; nutrient requirements; Diagnosis and Recommendation Integrated System; Georgia
- DOI:
- 10.2134/agronj1985.00021962007700030032x
- https://doi.org/10.2134/agronj1985.00021962007700030032x
- Author:
- W. D. Branch; G. J. Gascho
- Source:
- Agronomy journal 1985 v.77 no.6 pp. 963-965
- ISSN:
- 0002-1962
- Subject:
- Arachis hypogaea; cultivars; soil fertility; variety trials; Georgia
- Abstract:
- ... Because of expansion of additional hectareage onto marginal soil types and the economical need to reduce production inputs, differential genetic responses to lower fertility practices need to be sought within crop species. During 1981 through 1983, tests were conducted to evaluate 24 peanut (Arachis hypogaea L.) cultivars under low soil fertility. The Tifton loamy sand (fine-loamy, siliceous, ther ...
- DOI:
- 10.2134/agronj1985.00021962007700060031x
- https://doi.org/10.2134/agronj1985.00021962007700060031x
- Author:
- T. P. Gaines; M. B. Parker; G. J. Gascho
- Source:
- Agronomy journal 1984 v.76 no.3 pp. 371-374
- ISSN:
- 0002-1962
- Subject:
- Glycine max; chlorides; loamy sand soils; plant tissues; sandy clay loam soils; sandy clay soils; sandy soils; sodium nitrate; soil chemical properties; soil-plant interactions; solvents; soybeans; Georgia
- Abstract:
- ... An accurate, precise, and fast automated method for determining Cl in large numbers of soil and plant samples was needed in the confirmation that Cl toxicity was the cause of leaf scorch, a new disorder of soybean [Glycine max (L.) Merr.] grown on Atlantic Coast Flatwoods soils of Georgia. The method described involves the use of 0.1 M NaNO₃ as an extractant for soil and plant tissue samples with ...
- DOI:
- 10.2134/agronj1984.00021962007600030005x
- https://doi.org/10.2134/agronj1984.00021962007600030005x
- Author:
- Myron B. Parker; G. J. Gascho; T. P. Gaines
- Source:
- Agronomy journal 1983 v.75 no.3 pp. 439-443
- ISSN:
- 0002-1962
- Subject:
- Glycine max; Paleaquults; Paleudults; cultivars; drought; fertilizer application; fertilizers; leaves; magnesium; phosphorus; phytotoxicity; potassium chloride; sand; scorch; seed weight; soil quality; soil-plant interactions; soybeans; Georgia
- Abstract:
- ... Leaf scorch, caused by CI toxicity, affected over 20,000 ha of soybeans (Glycine max (L.) Merr.) in 1980 in the poorly-drained Flatwoods soils of Georgia. This new disorder, compounded by the extended drought of 1980, resulted in Severe yield reductions of ‘Bragg’ soybeans. Field studies involving fertilizer treatments in two experiments and 15 cultivars in one experiment were conducted in 1981 to ...
- DOI:
- 10.2134/agronj1983.00021962007500030005x
- https://doi.org/10.2134/agronj1983.00021962007500030005x
- Author:
- W. Paul Williams; Frank M. Davis; Billy R. Wiseman
- Source:
- Agronomy journal 1983 v.75 no.5 pp. 831-832
- ISSN:
- 0002-1962
- Subject:
- Paleudults; Spodoptera frugiperda; Zea mays; corn; crop production; genotype; insect larvae; insecticides; leaves; loamy sand soils; montmorillonite; pests; planting date; silty clay loam soils; Georgia; Mississippi
- Abstract:
- ... The fall armyworm [Spodoptera frugiperda (J. E. Smith)] is a serious pest of late planted corn (Zea mays L.) in the South; however, corn genotypes which show reduced leaf feeding damage have been developed. To study the effects of corn genotypes with and without resistance to leaf feeding by the fall armyworm on larvae development, field tests were conducted at Mississippi State, Miss. and Tifton, ...
- DOI:
- 10.2134/agronj1983.00021962007500050023x
- https://doi.org/10.2134/agronj1983.00021962007500050023x
- Author:
- R. R. Duncan; R. B. Clark; P. R. Furlani
- Source:
- Agronomy journal 1983 v.75 no.6 pp. 1023-1026
- ISSN:
- 0002-1962
- Subject:
- Hapludults; Paleudults; Rhodudults; Sorghum bicolor; acid soils; aluminum; dry matter accumulation; genotype; greenhouses; growth chambers; manganese; nutrient solutions; pH; plant response; plant stress; screening; soil-plant interactions; toxicity; Georgia; Nebraska
- Abstract:
- ... Plant responses in controlled environments (greenhouse and growth chamber) should relate to field plant responses if laboratory screening methods are to be used effectively for the improvement of plant tolerances to soil stress conditions. Eight acid soil susceptible and tolerant sorghum [Sorghum bicolor (L.) Moench.] genotypes were compared for dry matter production, element uptake, and visual pl ...
- DOI:
- 10.2134/agronj1983.00021962007500060035x
- https://doi.org/10.2134/agronj1983.00021962007500060035x
- Author:
- W. L. Hargrove; J. T. Touchton; J. W. Johnson
- Source:
- Agronomy journal 1983 v.75 no.6 pp. 855-859
- ISSN:
- 0002-1962
- Subject:
- Paleudults; Sorghum bicolor; Triticum aestivum; agronomy; ammonium nitrate; coastal plains; double cropping; grain sorghum; grain yield; kaolinite; leaves; nitrogen content; nitrogen fertilizers; plant tissues; sandy clay loam soils; silt loam soils; soft red winter wheat; spring; valleys; Georgia
- Abstract:
- ... Few studies have addressed factors which affect wheat (Triticum aestivum L.) production in double-cropping systems. This study was conducted for 4 years at two locations in Georgia (Limestone Valley and Coastal Plain regions) to determine the influence of the previous crop on fertilizer N requirements for double-cropped wheat. The N fertilizer treatments were fall (0, 11, 22, 33, and 44 kg N ha⁻¹ ...
- DOI:
- 10.2134/agronj1983.00021962007500060003x
- https://doi.org/10.2134/agronj1983.00021962007500060003x
- Author:
- B. J. Johnson
- Source:
- Agronomy journal 1982 v.74 no.1 pp. 37-40
- ISSN:
- 0002-1962
- Subject:
- 2,4-D; Cynodon dactylon; Digitaria sanguinalis; Eleusine indica; Veronica; bensulide; broadleaf weeds; chlorthal-dimethyl; dicamba; glyphosate; lawns and turf; mecoprop; paraquat; pesticide application; postemergent weed control; preemergent weed control; prosulfalin; summer; winter; Georgia
- Abstract:
- ... It is usually necessary to apply herbicides to control both winter and summer weeds in bermudagrass [Cynodon dactylon (L.) Pers. ‘Common’] turf. A study was conducted on a Cecil (Typic Hapludult) loam or sandy clay loam at Griffin, Ga. to determine whether combinations of preemergence type herbicides for summer weeds and postemergence type herbicides for winter weeds would control both type weeds ...
- DOI:
- 10.2134/agronj1982.00021962007400010012x
- https://doi.org/10.2134/agronj1982.00021962007400010012x
- Author:
- H. R. Boerma; D. A. Ashley
- Source:
- Agronomy journal 1982 v.74 no.6 pp. 995-999
- ISSN:
- 0002-1962
- Subject:
- Glycine max; Paleudults; Zea mays; corn; double cropping; dry season; genotype; genotype-environment interaction; irrigation; kaolinite; planting date; rain; row spacing; sandy loam soils; seed yield; small cereal grains; soybeans; Georgia
- Abstract:
- ... In the southeastern United States between 25 and 40% of the soybean [Glycine max (L.) Merr.] hectarage is double-cropped. Information on desirable production practices for double cropping soybeans after small grains, soybeans, or corn (Zea mays L.) is limited. The objectives of this study were to evaluate the effects of late (late June or early July) and ultra-late (late July or early August) plan ...
- DOI:
- 10.2134/agronj1982.00021962007400060015x
- https://doi.org/10.2134/agronj1982.00021962007400060015x
- Author:
- B. J. Johnson
- Source:
- Agronomy journal 1982 v.74 no.6 pp. 1063-1066
- ISSN:
- 0002-1962
- Subject:
- Poa pratensis; application rate; benefin; bensulide; chlorthal-dimethyl; cultivars; lawns and turf; napropamide; oxadiazon; pesticide application; preemergent weed control; prosulfalin; spring; summer; turf grasses; weeds; Georgia
- Abstract:
- ... Herbicides are one of several management practices necessary to maintain good quality, weed-free turf. To be acceptable, they must control weeds without causing turfgrass injury. An experiment was conducted on Congaree loam (Fluventic Dystrochrepts) in the mountain region of Georgia to determine the effects of consecutive annual herbicide treatments on six Kentucky bluegrass (Poa pratensis L.) cul ...
- DOI:
- 10.2134/agronj1982.00021962007400060031x
- https://doi.org/10.2134/agronj1982.00021962007400060031x
- Author:
- M. B. Parker; W. H. Marchant; B. J. Mullinix
- Source:
- Agronomy journal 1981 v.73 no.5 pp. 759-762
- ISSN:
- 0002-1962
- Subject:
- Glycine max; cultivars; maturity groups; plant height; planting date; row spacing; seed quality; soil water; soybeans; Georgia; Midwestern United States
- Abstract:
- ... Soil moisture conditions favor April planting of soybeans [Glycine may (L.) Merr.] in the southern USA, but reports have indicated that soybean cultivars were not adapted to April planting. Data are not available on the response of newer cultivars to early and late plantings. Also, reports from the north central USA have indicated that soybeans yield more when planted in narrow (46 cm or less) tha ...
- DOI:
- 10.2134/agronj1981.00021962007300050003x
- https://doi.org/10.2134/agronj1981.00021962007300050003x
- Author:
- M. B. Parker; F. C. Boswell; K. Ohki; L. M. Shuman; D. O. Wilson
- Source:
- Agronomy journal 1981 v.73 no.4 pp. 643-646
- ISSN:
- 0002-1962
- Subject:
- Glycine max; Paleudults; calcium; copper; cultivars; equations; hydrochloric acid; iron; leaves; magnesium; manganese; nutrient content; nutrients; plant tissues; potassium; sand; seed weight; seed yield; seeds; soil pH; soil test values; soybeans; sulfuric acid; zinc; Georgia
- Abstract:
- ... Critical and sufficiency concentrations of Mn in soybean [Glycine max (L.) Merr.] leaves are levels which are deficient and adequate, respectively. These levels have been determined with a single cultivar. However, since several cultivars are often grown in Mn deficient areas, it becomes important to know if cultivars have different Mn requirements. A 3-year study was conducted on an Olustee-Leefi ...
- DOI:
- 10.2134/agronj1981.00021962007300040018x
- https://doi.org/10.2134/agronj1981.00021962007300040018x
- Author:
- H. D. Skipper; J. H. Palmer; J. E. Giddens; J. M. Woodruff
- Source:
- Agronomy journal 1980 v.72 no.4 pp. 673-674
- ISSN:
- 0002-1962
- Subject:
- Bradyrhizobium japonicum; Glycine max; acetylene reduction; crop yield; field experimentation; fungicides; greenhouses; growers; most probable number technique; nodulation; planting; plate count; soil; soybeans; viability; Alabama; Georgia; South Carolina
- Abstract:
- ... Much of the expanding production of soybeans (Glycine max L.) in the southeastern United States and in other countries is on soils without naturalized populations of Rhizobium japonicum. Effective inoculation is essential where soybeans are lanted for the first time. Considering the frequency of inoculation failures and the variety of inoculant products available to growers, research was initiated ...
- DOI:
- 10.2134/agronj1980.00021962007200040025x
- https://doi.org/10.2134/agronj1980.00021962007200040025x