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1. Crop Response following Tall Fescue Sod and Agronomic Crops

Author:
Drake, W. L.; Jordan, D. L.; Schroeder-Moreno, M.; Johnson, P. D.; Heitman, J. L.; Cardoza, Y. J.; Brandenburg, R. L.; Shew, B. B.; Corbett, T.; Bogle, C. R.; Ye, W.; Hardy, D.
Source:
Agronomy journal 2010 v.102 no.6 pp. 1692-1699
ISSN:
0002-1962
Subject:
cotton; interspecific variation; Zea mays; peanuts; Glycine max; Festuca arundinacea; no-tillage; conventional tillage; soil nematodes; Gossypium hirsutum; strip tillage; soybeans; corn; bulk density; cover crops; crop yield; Arachis hypogaea; crop rotation; soil density; North Carolina
Abstract:
... Sod-based production systems have been successful in the southeastern and mid-Atlantic regions of the United States as an alternative to conventional tillage systems. However, research comparing these systems in North Carolina is limited. Therefore, research was conducted at four locations in North Carolina to compare corn (Zea mays L.), cotton (Gossypium hirsutum L.), peanut (Arachis hypogaea L.) ...
DOI:
10.2134/agronj2010.0236

2. Conservation versus Conventional Tillage on Performance of Three Different Crops

Author:
Yau, S. K.; Sidahmed, M.; Haidar, M.
Source:
Agronomy journal 2010 v.102 no.1 pp. 269-276
ISSN:
0002-1962
Subject:
minimum tillage; interspecific variation; Carthamus tinctorius; barley; grain crops; no-tillage; Hordeum vulgare; safflower seed products; conventional tillage; dry matter accumulation; chickpeas; crop yield; dryland farming; tap roots; weeds; soil erosion; field experimentation; Cicer arietinum; Lebanon
Abstract:
... Conservation tillage, besides being more economical, prevents soil erosion and has other beneficial effects on our environment, but few studies have been conducted on differential responses of different crops to conservation tillage. The main objective of this study was to examine the interaction of tillage with crop species. Rainfed field experiments in a strip-plot design with four replicates we ...
DOI:
10.2134/agronj2009.0242

3. Nitrogen and Harvest Frequency Effect on Yield and Cost for Four Perennial Grasses

Author:
Haque, M.; Epplin, F. M.; Taliaferro, C. M.
Source:
Agronomy journal 2009 v.101 no.6 pp. 1463-1469
ISSN:
0002-1962
Subject:
Panicum virgatum; harvest date; interspecific variation; perennials; Cynodon dactylon; fuel production; fertilizer rates; Pennisetum flaccidum; frequency; dry matter accumulation; cost analysis; crop yield; Eragrostis curvula; biomass; nitrogen fertilizers; Oklahoma
Abstract:
... A USDOE and USDA study concluded that more than 20 million U.S. hectares of cropland, idle cropland, and cropland pasture could be converted from current uses to the production of perennial grasses from which biomass could be harvested for use as biorefinery feedstock. This study was conducted to determine the most efficient species, level of N, and harvest frequency from among four perennial gras ...
DOI:
10.2134/agronj2009.0193

4. No-Till Sequential Cropping of Summer and Fall Annual Forage Species Compared with Grassland

Author:
Basweti, E. A.; Turk, P. J.; Rayburn, E. B.; Bryan, W. B.
Source:
Agronomy journal 2009 v.101 no.6 pp. 1497-1502
ISSN:
0002-1962
Subject:
sowing date; no-tillage; crop yield; seasonal variation; field experimentation; grasslands; interspecific variation; perennials; dry matter accumulation; glyphosate; prescribed burning; annuals; forage grasses; forage quality; cool season grasses; nitrogen fertilizers; fertilizer rates; cropping systems; West Virginia
Abstract:
... Summer (SAS) and fall annual species (FAS) can supplement animal forage requirements during times of slow growth of cool-season perennials. A 2-yr experiment was conducted in a perennial grassland (G) at the Reedsville Experimental Farm of West Virginia University to determine herbage accumulation (HA) and quality of two summer and two fall crops (in factorial combination) grown on the same land. ...
DOI:
10.2134/agronj2008.0082x

5. Cover Crops and Organic Mulch to Improve Tomato Yields and Soil Fertility

Author:
Wang, Qingren; Klassen, Waldemar; Li, Yuncong; Codallo, Merlyn
Source:
Agronomy journal 2009 v.101 no.2 pp. 345-351
ISSN:
0002-1962
Subject:
tomatoes; mulches; interspecific variation; soil organic carbon; soil quality; nutrient uptake; green manures; cover crops; crop yield; soil fertility; field experimentation; organic production; application rate; Solanum lycopersicum var. lycopersicum; Florida
Abstract:
... Cover crops and organic mulches (OMs) have been reported as a means to reduce inputs and increase soil quality. A field experiment was conducted to elucidate the effects of summer cover crops and organic compost on winter fresh market tomato (Lycopersicon esculentum Mill.) yields and quality. Cover crops were sunn hemp (Crotalaria juncea L.), velvetbean (Mucuna pruriens var. utilis), cowpea (Vigna ...
DOI:
10.2134/agronj2008.0103

6. Second Harvest Timing and Cut Height of Forage Crops in Central Alaska

Author:
Sparrow, Stephen D.; Masiak, Darleen T.
Source:
Agronomy journal 2008 v.100 no.6 pp. 1615-1621
ISSN:
0002-1962
Subject:
harvest date; interspecific variation; Bromus inermis; Medicago sativa; cutting; forage legumes; alfalfa; height; forage grasses; crop yield; Astragalus cicer; nutritive value; sustainable agriculture; Alaska
Abstract:
... Proper timing of second harvest is critical for good yields and long-term sustainability of perennial hay crops in high latitude environments. We studied effects of second harvest timing and height on yield and forage quality for smooth bromegrass (Bromus inermis Leyss.), alfalfa (Medicago sativa L.), and cicer milkvetch (Astragalus cicer L.) in central Alaska. Second harvest treatments occurred e ...
DOI:
10.2134/agronj2008.0006

7. Species and Stockpile Initiation Date Effects on Yield and Nutritive Value of Irrigated Cool-season Grasses

Author:
Volesky, Jerry D.; Anderson, Bruce E.; Stockton, Matthew C.
Source:
Agronomy journal 2008 v.100 no.4 pp. 931-937
ISSN:
0002-1962
Subject:
harvest date; interspecific variation; forage crops; in vitro digestibility; pastures; weathering; neutral detergent fiber; grazing; nutritive value; dry matter accumulation; forage grasses; crop yield; crude protein; irrigated farming; cool season grasses; Nebraska
Abstract:
... Stockpiling forage for fall and winter grazing can extend the grazing season and reduce costs associated with harvesting, storing, and feeding forages. The objectives of this study were to determine species, stockpile initiation date, and winter harvest date effects on yield and nutritive value of eight cool-season grasses grown under irrigated conditions near North Platte, NE. Treatments included ...
DOI:
10.2134/agronj2007.0312

8. Harvest Techniques Change Annual Warm-Season Legume Forage Yield and Nutritive Value

Author:
Muir, James P.; Butler, Twain J.; Wolfe, Richard M.; Bow, John R.
Source:
Agronomy journal 2008 v.100 no.3 pp. 765-770
ISSN:
0002-1962
Subject:
harvesting; interspecific variation; fiber content; experimental design; Fabaceae; cutting; forage legumes; nutritive value; dry matter accumulation; crop yield; crude protein; height; field experimentation; branches; Texas
Abstract:
... Comparison among warm-season legume forage trials may not be valid if harvest techniques vary. To address this question, herbage dry matter (DM) yields, branching, crude protein (CP), and fiber concentrations for nine warm-season annual herbaceous legumes were measured by hand-plucking all leaves and pliable tips or clipping at 7.5- or 15-cm height. The experiment was conducted in Texas on a Windt ...
DOI:
10.2134/agronj2007.0042

9. Nitrogen Use Efficiency and Nitrogen Uptake of juncea Canola under Diverse Environments

Author:
Gan, Y.; Malhi, S.S.; Brandt, S.; Katepa-Mupondwa, F.; Stevenson, C.
Source:
Agronomy journal 2008 v.100 no.2 pp. 285-295
ISSN:
0002-1962
Subject:
interspecific variation; canola; plant nutrition; nitrogen; fertilizer rates; Sinapis alba; nutrient uptake; Brassica juncea; environmental factors; crop yield; rain; Brassica napus; Brassica rapa; seed productivity; nutrient use efficiency; nitrogen fertilizers; Saskatchewan
Abstract:
... Nitrogen accounts for the largest energy input in oilseed production. Understanding N use characteristics of oilseed crops will help improve N use efficiency and minimize production costs. This study determined nitrogen use efficiency (NUE, defined as seed yield produced per unit of N supply), nitrogen fertilizer use efficiency (NFUE, defined as seed yield produced per unit of fertilizer N), and c ...
DOI:
10.2134/agrojnl2007.0229

10. Arrowleaf, Crimson, Rose, and Subterranean Clover Growth with and without Defoliation in the Southeastern United States

Author:
Evers, G.W.; Newman, Y.C.
Source:
Agronomy journal 2008 v.100 no.1 pp. 221-230
ISSN:
0002-1962
Subject:
temporal variation; interspecific variation; plant growth; Trifolium incarnatum; pastures; grazing; forage legumes; plant density; regrowth; crop yield; dry matter partitioning; Trifolium hirtum; defoliation; Trifolium subterraneum; Trifolium vesiculosum; roots; light; shoots; Texas
Abstract:
... Understanding the growth pattern of cool-season annual clovers is necessary to develop management practices that maximize forage production and identify compatible grass associations and farming systems. Plant density, light interception, shoot yield, and root yield of arrowleaf (Trifolium vesiculosum Savi.), crimson (T. incarnatum L.), rose (T. hirtum All.), and subterranean (T. subterraneum L.) ...
DOI:
10.2134/agrojnl2007.0067

11. Summer–Fall Seeding Dates for Six Cool-Season Grasses in the Midwest United States

Author:
Undersander, D. J.; Greub, L. J.
Source:
Agronomy journal 2007 v.99 no.6 pp. 1579-1586
ISSN:
0002-1962
Subject:
interspecific variation; sowing date; frost injury; dry matter accumulation; plant density; forage grasses; crop yield; tillers; cool season grasses; frost; mortality; Wisconsin
Abstract:
... The effect of late summer (fall) planting date for cool-season grasses in the upper Midwest is not well understood. Objectives of this research were to determine optimum planting dates of late-summer/fall seedings in different environments for several cool-season grass species and to gain information on tiller density and tillers plant⁻¹ relative to dry matter yield. Late-summer/fall seedings of s ...
DOI:
10.2134/agronj2006.0194

12. Brassica juncea Canola in the Northern Great Plains

Author:
Gan, Y.; Malhi, S. S.; Brandt, S.; Katepa-Mupondwa, F.; Kutcher, H. R.
Source:
Agronomy journal 2007 v.99 no.5 pp. 1208-1218
ISSN:
0002-1962
Subject:
interspecific variation; canola; flowering; Brassica juncea var. juncea; Sinapis alba; phenology; fertilizer rates; geographical variation; drought; mustard products; water stress; crop yield; plant adaptation; Brassica napus; Brassica rapa; seed productivity; climatic factors; nitrogen fertilizers; Saskatchewan
Abstract:
... Brassica juncea var. juncea canola is a new oilseed species that is developed from B juncea (L.) Czern. mustard with its oil and meal quality equivalent to conventional canola species. Understanding of the phenological characteristics and yield responses to diverse environments will allow the crop to be better adapted to target production areas. This study determined the responses of the juncea ca ...
DOI:
10.2134/agronj2006.0296

13. Yield, Seed Quality, and Sulfur Uptake of Brassica Oilseed Crops in Response to Sulfur Fertilization

Author:
Malhi, S. S.; Gan, Y.; Raney, J. P.
Source:
Agronomy journal 2007 v.99 no.2 pp. 570-577
ISSN:
0002-1962
Subject:
interspecific variation; crop quality; sulfur; fertilizer requirements; fertilizer rates; nutrient uptake; Brassica juncea; oil crops; crop yield; oilseeds; sulfur fertilizers; Brassica napus; field experimentation; genetic variation; protein content; nutrient use efficiency; glucosinolates; Saskatchewan
Abstract:
... Field experiments were conducted in 2003, 2004, and 2005 on a S-deficient Gray Luvisol (Boralf) soil near Star City, in northeastern Saskatchewan, to determine yield, seed quality and S uptake response of different Brassica (B.) oilseed species/cultivars to S deficiency and S fertilization. A total of 20 treatments were tested in a factorial combination of four oilseed crops (B. juncea canola cv. ...
DOI:
10.2134/agronj2006.0269

14. Forage Yield and Quality of Six Annual Medicago Species in the North-Central USA

Author:
Zhu, Yanping; Sheaffer, Craig C.; Barnes, Donald K.
Source:
Agronomy journal 1996 v.88 no.6 pp. 955-960
ISSN:
0002-1962
Subject:
interspecific variation; cultivars; crop quality; sowing date; Medicago rugosa; fiber content; Medicago sativa; Medicago polymorpha; Medicago scutellata; spring; crop yield; forage; crude protein; Medicago littoralis; summer; Medicago lupulina; Medicago truncatula
Abstract:
... Annual medics (Medicago spp.) have been extensively used as winter annual forage and green manure crops in Mediterranean regions, but their potential use in the north-central USA has not been evaluated. Our objective was to determine the summer and fall forage yield and forage quality of spring- and summer-seeded annual medics. Twelve commercial annual medic cultivars from Australia (representing ...
DOI:
10.2134/agronj1996.00021962003600060019x

15. Comparisons between an Upland and a Pima Cotton Cultivar: I. Growth and Yield

Author:
Unruh, Bryan L.; Silvertooth, Jeffrey C.
Source:
Agronomy journal 1996 v.88 no.4 pp. 583-589
ISSN:
0002-1962
Subject:
interspecific variation; seeds; lint cotton; Gossypium hirsutum; Gossypium barbadense; crop yield; growth models; sexual reproduction; dry matter partitioning; heat sums; vegetative growth; Arizona
Abstract:
... American Pima cotton (Gossypium barbadense L.) is an extra-long staple cotton produced in the southwestern USA and in other regions around the world. Pima cotton generally yields less than Upland (G. hirsutum L.), but there have not been any studies conducted to document the basis for these differences. Field trials were conducted at two south-central Arizona locations from 1990 through 1992 for t ...
DOI:
10.2134/agronj1996.00021962008800040015x

16. Rhizobia1 Inoculation and Phosphorus and Zinc Nutrition for Annual Medics Adapted to Mediterranean Environments

Author:
Materon, Luis A.; Ryan, John
Source:
Agronomy journal 1995 v.87 no.4 pp. 692-698
ISSN:
0002-1962
Subject:
cold tolerance; interspecific variation; nitrogen fixation; seed inoculation; Medicago rigidula; Medicago polymorpha; Ensifer meliloti; phosphorus fertilizers; dry matter accumulation; zinc fertilizers; crop yield; nodulation; roots; Mediterranean climate; pods
Abstract:
... Cereal production in the Mediterranean region (where rainfall averages 200 to 600 mm yr⁻¹) has traditionally used fallowing in alternate years to conserve croplimiting soil moisture. Self-regenerating pasture medics (Medicago spp.) were introduced to provide forage for livestock in the alternate year and to reduce the cereal's need for fertilizer N; their adaptation depends on compatible Rhizobium ...
DOI:
10.2134/agronj1995.00021962008700040015x

17. Warm-Season Grass Productivity and Growth Rate as Influenced by Canopy Management

Author:
Belesky, David P.; Fedders, James M.
Source:
Agronomy journal 1995 v.87 no.1 pp. 42-48
ISSN:
0002-1962
Subject:
Panicum virgatum; interspecific variation; Cynodon dactylon; Pennisetum flaccidum; regrowth; forage; crop yield; defoliation; sward; Bothriochloa bladhii; heading; vegetative growth; West Virginia
Abstract:
... Warm-season grasses adapted to cool-temperate environments can improve the seasonal distribution and supplement the productivity of forage systems in the northeastern USA. Management practices concerning clipping regimes for warm-season grasses grown in the region, are not well understood. A 2-yr field study was conducted to determine productivity and growth rates of flaccidgrass (Pennisetum flacc ...
DOI:
10.2134/agronj1995.00021962008700010008x

18. Logistic Response of Bermudagrass and Bunchgrass Cultivars to Applied Nitrogen

Author:
Overman, A. R.; Sanderson, M. A.; Jones, R. M.
Source:
Agronomy journal 1993 v.85 no.3 pp. 541-545
ISSN:
0002-1962
Subject:
interspecific variation; cultivars; mathematical models; forage crops; Panicum coloratum; application rate; soil water content; Cynodon dactylon; arid zones; dry matter accumulation; crop yield; rain; growth models; Eragrostis curvula; Cenchrus ciliaris; nitrogen fertilizers; Texas
Abstract:
... Models provide a quantitative means to evaluate yield response of forage grasses to applied N and water availability. The objective of this analysis was to estimate model parameters (A, b, c) for bermu. dagrasses and bunchgrasses grown at the same location and during the same time period. The logistic equation was used to relate annual dry matter production to applied N for three bermudagrasses [C ...
DOI:
10.2134/agronj1993.00021962008500030004x

19. Management and Environment Effects on Dry Matter Yields of Three Brassica Species

Author:
Wiedenhoeft, M. Hagemann
Source:
Agronomy journal 1993 v.85 no.3 pp. 549-553
ISSN:
0002-1962
Subject:
harvest date; interspecific variation; Brassica rapa subsp. pekinensis; hybrids; sowing date; soil water content; grazing; air temperature; dry matter accumulation; regrowth; forage; crop yield; Brassica napus; Brassica rapa subsp. oleifera; cold; Maine
Abstract:
... Brassica crops have potential use as a forage during summer, fall, and early winter months. The influence of planting date and harvest date on the initial and regrowth herbage yields for three Brassica species: rape (B. napus L., ‘Winfred’ in 1987 and ‘Emerald’ in 1988 and 1989), turnip (B. rapa L., ‘Purple Top’), and a turnip hybrid (B. rapa × B. pekinensis L., ‘Tyfon’) were investigated. The spe ...
DOI:
10.2134/agronj1993.00021962008500030006x

20. Inter-Seasonal Variation in Soybean and Maize Yields under Global Environmental Change

Author:
Sinclair, Thomas R.; Rawlins, Stephen L.
Source:
Agronomy journal 1993 v.85 no.2 pp. 406-409
ISSN:
0002-1962
Subject:
interspecific variation; Zea mays; Glycine max; crop yield; global warming; seasonal variation; growth models; climatic factors; Midwestern United States
Abstract:
... Projected global environment changes will have major influences on crop yields. A very important aspects of crop yields, and societal adjustments to environmental changes, may well be altered year-to-year stability in yields. Simulations for three locations in the Midwest with mechanistic growth models for maize (Zea mays L.) and soybean [Glycine max (L.) Merr.] showed important species difference ...
DOI:
10.2134/agronj1993.00021962008500020043x