Legume Cover Crops as a Nitrogen Source for No‐Till Corn and Grain Sorghum

Eight herbicide treatments per crop were evaluated for hairy vetch and crimson clover cover-crop control in no-till corn and cotton at two locations in North Carolina. Paraquat alone or combined with dicamba, 2,4-D, or cyanazine, and cyanazine alone, controlled clover the best in both crops. All herbicide treatments, except glyphosate alone, controlled at least 89% of hairy vetch in corn. However, only 2,4-D and cyanazine alone or combined with glyphosate controlled greater than 89% of hairy vetch in cotton. Except for poor control of hairy vetch and crimson clover by glyphosate alone, reduced legume control did not consistently decrease corn or cotton yield. Weed control was reduced in crimson clover treated with glyphosate alone, but control was similar among the remaining herbicide treatments. Effectiveness of legume control did not influence the N concentration of corn or cotton. Corn stand, height, and yield were greater in hairy vetch than in crimson clover. Seed cotton yield did not differ between vetch and clover.

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Winter Legumes as a Nitrogen Source for No‐Till Grain Sorghum 1

Agronomy Journal ◽

10.2134/agronj1986.00021962007800010016x ◽

1986 ◽

Vol 78 (1) ◽

pp. 70-74 ◽

Cited By ~ 173

Author(s):

W. L. Hargrove

Keyword(s):

Nitrogen Source ◽

Grain Sorghum ◽

No Till

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Legume Cover Crops as a Nitrogen Source for Corn in an Oat-Corn Rotation

jpa ◽

10.2134/jpa1995.0385 ◽

1995 ◽

Vol 8 (3) ◽

pp. 385-390 ◽

Cited By ~ 35

Author(s):

J. K. Stute ◽

J. L. Posner

Keyword(s):

Nitrogen Source ◽

Cover Crops ◽

Legume Cover Crops

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Profits and risks of using crimson clover and hairy vetch cover crops in no-till corn production

American Journal of Alternative Agriculture ◽

10.1017/s0889189300002745 ◽

1989 ◽

Vol 4 (2) ◽

pp. 65-70 ◽

Cited By ~ 17

Author(s):

Stephen L. Ott ◽

William L. Hargrove

Keyword(s):

Nitrogen Source ◽

Cover Crops ◽

Cover Crop ◽

Technical Information ◽

Economic Research ◽

Corn Yield ◽

Risk Averse ◽

Hairy Vetch ◽

Crimson Clover ◽

Legume Cover Crops

AbstractWinter legume cover crops are receiving increasing attention from agronomists and farmers as a source of nitrogen for summer crops. While agronomists are continually providing new technical information on using legumes as a nitrogen source, little is known on the economics of their use. Previous economic research on legume cover crops has focused mainly on budgeting analysis. In the present work, a twofactorial experiment was designed to test the use of legumes as a nitrogen source for corn(Zea mays L.)in north Georgia. The first factor was winter cover crop with treatments being crimson clover(Trifolium incarnatumL.),hairy vetch(Vicia villosaRoth),wheat(Triticum aestivumL.), and no cover crop or winter fallow. The second factor was nitrogen (N) fertilizer applied at five different rates: 0, 25, 50, 100, or 200 pounds per acre. For each combination of the two factors, mean yield and yield variance were determined. Results indicated that legume cover crops increased both average corn yield and yield variance. The greater yield variance from the use of legume cover crops increases economic risk. Risk-averse farmers must be compensated for increased profit variance by higher average profits. A safety first method was used to evaluate the tradeoff between average profit and profit variance for the risk-averse individual The results showed that hairy vetch with 50 pounds of N per acre was the best combination of cover crop and fertilizer rate for risk-neutral farmers. For risk-averse farmers, hairy vetch without any nitrogen fertilizer is preferred.

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Change of Weed Community in No-till Corn with Legume Cover Crops as Living Mulch

Korean Journal of Weed Science ◽

10.5660/kjws.2011.31.1.034 ◽

2011 ◽

Vol 31 (1) ◽

pp. 34-40 ◽

Cited By ~ 3

Author(s):

Bong-Su Choi ◽

Chung-Guk Kim ◽

Ki-Yeong Seong ◽

Duk-Young Song ◽

Weon-Tai Jeon ◽

...

Keyword(s):

Cover Crops ◽

Living Mulch ◽

No Till ◽

Legume Cover Crops

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Energy and economic savings from the use of legume cover crops in Virginia corn production

American Journal of Alternative Agriculture ◽

10.1017/s0889189300005956 ◽

1994 ◽

Vol 9 (4) ◽

pp. 178-185 ◽

Cited By ~ 9

Author(s):

D.R. Ess ◽

D.H. Vaughan ◽

J.M. Luna ◽

P.G. Sullivan

Keyword(s):

Cover Crops ◽

Crop Production ◽

Energy Use ◽

N Fertilizer ◽

Corn Production ◽

Alternative Crop ◽

No Till ◽

Legume Cover Crops ◽

Net Revenue ◽

Sustainable Agricultural Systems

AbstractEnergy analysis provides a measure of the effectiveness of sustainable agricultural systems in reducing inputs purchased from off-farm sources. This study compares the total (direct plus indirect) energy costs of growing corn for silage using manufactured N fertilizer or N-fixing legume cover crops. The cover crop either was killed with herbicide in a no-till system or disked in the spring. Economically competitive alternative crop production practices are identified.In both the no-till and the disked versions, cover-cropped treatments used about half as much energy per hectare as the corresponding winter fallow N-fertilizer treatments. Using vetch to provide N significantly lowered energy use per unit of crop output compared with the N-fertilized treatments. For the treatments that used hairy vetch, either alone or in combination with big/lower vetch, net revenue was statistically equivalent to that of standard-practice treatments in each year of the study.

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