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Performance, economics, and adoption of cover crops in Wisconsin cash grain rotations: On-farm trials

Published online by Cambridge University Press:  30 October 2009

Ellen B. Mallory ,
Joshua L. Posner  and
Jon O. Baldock
Ellen B. Mallory
Affiliation:
Graduate student of Agronomy and Land Resources, Department of Agronomy, University of Wisconsin, Madison, WI 53706
Joshua L. Posner
Affiliation:
Professor, Department of Agronomy, University of Wisconsin, Madison, WI 53706
Jon O. Baldock
Affiliation:
Owner and Research Director of AGSTAT, Verona, WI, 53593
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Abstract

Cover crop performance depends largely on management factors that must be customized to particular farm situations and, therefore, is suited for on-farm research, with farmers involved in both management and evaluation. Cover crop sequences that were successful in a research station study were tested over a variety of soils and management strategies in collaboration withfarmers. The two-year cover crop sequences consisted of a short-season crop followed by a cover crop in year one and corn in year two. The cover crops themselves were evaluated by their agronomic and economic performance and their acceptance by farmers. Four cover crop systems (companionseeded red clover, sequentially seeded hairy vetch, sequentially seeded oat, and fallow) were compared for ground cover, above-ground biomass and above-ground nitrogen yield, subsequent corn grain yield, and N fertilizer replacement value (N-FRV). Cover crops were essential for erosion control following vegetable crops and tillage, but were not necessary following small grains. Companion-seeded red clover produced the most ground cover, yielded up to 133 kg N/ha, and had a higher average N-FRV than sequentially seeded hairy vetch on sandy loam soils, but was not preferred by farmers who harvested small grain straw as well as grain. Sequentially seeded hairy vetch gave excellent cover when no-till seeded, produced more than 125 kg N/ha in half the siteyears, and had a higher average N-FRV than companion-seeded red clover on silt loam soils. First-year N-FRV for the legume cover crops averaged 67 kg N/ha over both soil types. The participating farmers indicated that their decisions to adopt cover crops would be based primarily on their need for ground cover, and secondarily on the profitability of using cover crops as an N source. However, when valued solely as an N source for the next year's crop (and not for any potential long-term benefits), cover crops were not an economical alternative to N fertilizer. We suggest focusing future cover crop research and extension efforts on outreach to farmers growing crops that do not provide sufficient ground cover, such as short-season vegetable crops, and optimizing the cover crop system to maximize its erosion control benefits and increase its profitability over N fertilizer.

Keywords

nitrogen fertilizerfertilizer replacement valueground coveron-farm researchUpper Midwest
Type
Articles
Information
American Journal of Alternative Agriculture , Volume 13 , Issue 1 , March 1998 , pp. 2 - 11
Copyright
Copyright © Cambridge University Press 1998

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References

1.Badaruddin, M., and Meyer, D.W.. 1990. Green-manure legume effects on soil nitrogen, grain yield, and nitrogen nutrition of wheat. Crop Sci. 30:819–825.Google Scholar
2.Blevins, R.L., Herbek, J.H., and Frye, W.W.. 1990. Legume cover crops as a nitrogen source for no-till corn and grain sorghum. Agronomy J. 82:769–772.CrossRefGoogle Scholar
3.Bollero, G.A., and Bullock, D.G.. 1994. Cover cropping systems for the central corn belt. J. Production Agric. 7:55–58.Google Scholar
4.Bruce, R.R., Wilkinson, S.R., and Langdale, G.W.. 1987. Legume effects on soil erosion and productivity. In Power, J.F. (ed). The Role of Legumes in Conservation Tillage Systems. Soil Conservation Soc. Amer., Ankeny, Iowa. pp. 127–138.Google Scholar
5.Bruulsema, T.W., and Christie, B.R.. 1987. Nitrogen contribution to succeeding corn from alfalfa and red clover. Agronomy J. 79:96–100.CrossRefGoogle Scholar
6.Ebelhar, S.A., Frye, W.W., and Blevins, R.L.. 1984. Nitrogen from legume cover crops for no-tillage corn. Agronomy J. 76:51–55.Google Scholar
7.Ess, D.R., Vaughan, D.H., Luna, J.M., and Sullivan, P.G.. 1994. Energy and economic savings from the use of legume cover crops in Virginia corn production. Amer. J. Alternative Agric. 9:178–185.CrossRefGoogle Scholar
8.Faeth, P., Repetto, R., Kroll, K., Dai, Q. and Helmers, G.. 1991. Paying the Farm Bill: U.S. Agricultural Policy and the Transition to Sustainable Agriculture. World Resources Institute, Washington, D.C.Google Scholar
9.Fox, R.H., Roth, G.W., Iversen, K.V., and Piekielek, W.P.. 1989. Soil and tissue nitrate tests compared for predicting soil nitrogen availability to corn. Agronomy J. 81:971–974.CrossRefGoogle Scholar
10.Hargrove, W.L. 1986. Winter legumes as a nitrogen source for no-till grain sorghum. Agronomy J. 78:70–74.Google Scholar
11.Heichel, G.H., and Barnes, D.K.. 1984. Opportunities for meeting crop nitrogen needs from symbiotic nitrogen fixation. In Bezdicek, D. and Power, J. (eds). Organic Farming: Current Technology and Its Role in a Sustainable Agriculture. Spec. Pub. 46. Amer. Soc. Agronomy, Madison, Wisconsin. pp. 49–59.Google Scholar
12.Hesterman, O.B. 1988. Exploiting forage legumes for nitrogen contribution in cropping systems. In Hargrove, W.L. (ed). Cropping Strategies for Efficient Use of Water and Nitrogen. Spec. Pub. 51. Amer. Soc. Agronomy, Madison, Wisconsin. pp. 155–166.Google Scholar
13.Hesterman, O.B., Griffin, T.S., Williams, P.T., Harris, G.H., and Christenson, D.R.. 1992. Forage legumesmall grain intercrops: Nitrogen production and response of subsequent corn. J. Production Agric. 5:340–348.CrossRefGoogle Scholar
14.Karlen, D.L., and Doran, J.W.. 1991. Cover crop management effects on soybean and corn growth and nitrogen dynamics in an on-farm study. Amer. J. Alternative Agric. 6:71–82.Google Scholar
15.Karlen, D.L., Eash, N.S., and Unger, P.W.. 1992. Soil and crop management effects on soil quality indicators. Amer. J. Alternative Agric. 7:48–55.Google Scholar
16.Kelling, K.A., Bundy, L.G., and Schulte, E.E.. 1994. Wet weather effects on 1994 nutrient bank. In Proc. 1994 Fertilizer, Aglime and Pest Management Conf., Middleton, Wisconsin, 18–20 Jan. Univ. of Wisconsin Cooperative Extension, Madison. pp. 224–231.Google Scholar
17.Laflen, J.M., Amemiya, M., and Hintz, E.A.. 1981. Measuring crop residue cover. J. Soil and Water Conservation 36:341–343.Google Scholar
18.Lazarus, W. 1996. Minnesota farm machinery economic cost estimates for 1996. Minnesota Extension Service, Univ. of Minnesota, St. Paul.Google Scholar
19.Liebhardt, W.C., Andrews, R.W., Culik, M.N., Harwood, R.R., Janke, R.R., Radke, J.K., and RiegerSchwartz, S.L.. 1989. Crop production during conversion from conventional to low-input methods. Agronomy J. 81:150–159.CrossRefGoogle Scholar
20.Mitchell, W.H., and Teel, M.R.. 1977. Winter-annual cover crops for no-tillage corn production. Agronomy J. 69:569–573.CrossRefGoogle Scholar
21.Ngalla, C.F., and Eckert, D.J.. 1987. Wheat-red clover interseeding as a nitrogen source for no-till corn. In Power, J.F. (ed). The Role of Legumes in Conservation Tillage Systems. Soil Conservation Soc. Amer., Ankeny, Iowa. pp. 47–48.Google Scholar
22.Oplinger, E.S., Silveira, K.G., and Forsberg, R.A.. 1992. Oat management for straw production. Agronomy Advice, Field Crops 26.43-0. Univ. of Wisconsin, Madison.Google Scholar
23.Power, J.F. 1987. Legumes: Their potential role in agricultural production. Amer. J. Alternative Agric. 2:69–73.Google Scholar
24.Power, J.F., and Koerner, P.T.. 1994. Cover crop production for several planting and harvest dates in eastern Nebraska. Agronomy J. 86:1092–1097.Google Scholar
25.Reeves, D.W. 1994. Cover crops and rotations. In Hatfield, J.C. and Stewart, B.A. (eds). Advances in Soil Science: Crop Residue Management. Lewis Publishers, Boca Raton, Florida. pp. 125–172.Google Scholar
26.Ritchie, S.W., Hanway, J.J., and Benson, G.O.. 1989. How a corn plant develops. Spec. Rep. 48. Cooperative Extension Service, Iowa State Univ., Ames.Google Scholar
27.Rogers, E.M. 1983. Diffusion of Innovations. The Free Press, Macmillan, New York, N.Y.Google Scholar
28.Samson, R.A., Foulds, C.M., and Patriquin, D.G.. 1990. Choice and management of cover crop species and varieties for use in row crop dominant rotations: Final report. Resource Efficient Agricultural Production (REAP)—Canada, Ste. Anne-de-Bellevue, Quebec, Canada.Google Scholar
29.Samson, R.A., Foulds, C.M., and Patriquin, D.G.. 1991. Effect of cover crops on cycling of nitrogen and phosphorus in a winter wheat-corn sequence. In Hargrove, W.L. (ed). Cover Crops for Clean Water. Soil and Water Conservation Soc., Ankeny, Iowa. pp. 106–107.Google Scholar
30.Scott, T.W., Pleasant, J. Mt., Burt, R.F., and Otis, D.J.. 1987. Contributions of ground cover, dry matter, and nitrogen from intercrops and cover crops in a corn polyculture system. Agronomy J. 79:792–798.CrossRefGoogle Scholar
31.Shipley, P.R., Meisinger, J.J., and Decker, A.M.. 1992. Conserving residual corn fertilizer nitrogen with winter cover crops. Agronomy J. 84:869–876.Google Scholar
32.Smith, M.S., Frye, W.W., and Varco, J.J.. 1987. Legume winter cover crops. In Stewart, B.A. (ed). Advances in Soil Science. Vol. 7. Springer-Verlag, New York, N.Y. pp. 95–139.CrossRefGoogle Scholar
33.Stute, J.K., and Posner, J.L.. 1993. Legume cover crop options for grain rotations in Wisconsin. Agronomy J. 85:1128–1132.CrossRefGoogle Scholar
34.Stute, J.K., and Posner, J.L.. 1995. Legume cover crops as a nitrogen source for corn in an oat-corn rotation. J. Production Agric. 8:385–390.Google Scholar
35.Wischmeier, W.H., and Smith, D.D.. 1978. Predicting rainfall erosion losses: A guide to conservation planning. Agric. Handbook No. 537. U.S. Dept. of Agric., Washington, D.C.Google Scholar
36.WDATCP. 1996. Wisconsin Agricultural Statistics, 1996. Wisconsin Statistics Service, Wisconsin Department of Agriculture, Trade, and Consumer Protection. Madison.Google Scholar
37.WICST. 1996a. Wisconsin Integrated Cropping Systems Trial, 1995 Report. J.L. Posner (ed). Appendix VIII. WICST fall legume nitrogen for the following corn crop. Agronomy Dept., Univ. of Wisconsin, Madison.Google Scholar
38.WICST. 1996b. Wisconsin Integrated Cropping Systems Trial, 1995 Report. J.L. Posner (ed). Table 2, WICST yield results (1991–1995). Agronomy Dept., Univ. of Wisconsin, Madison.Google Scholar