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Cover crop contributions to N supply and water conservation in corn production

Published online by Cambridge University Press:  30 October 2009

Preston G. Sullivan ,
David J. Parrish  and
John M. Luna
Preston G. Sullivan
Affiliation:
Technical Specialist, ATTRA, P.O. Box 3657, Fayetteville, AR 72702, and former graduate research assistant in Crop and Soil Environmental Sciences at Virginia Polytechnic Institute and State University.
David J. Parrish
Affiliation:
Faculty members in the Crop and Soil Environmental Sciences and Entomology Departments, respectively, VPI & SU, Blacksburg, VA 24061.
John M. Luna
Affiliation:
Faculty members in the Crop and Soil Environmental Sciences and Entomology Departments, respectively, VPI & SU, Blacksburg, VA 24061.
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Abstract

Winter annual legume cover crops can reduce nitrogen (N) fertilizer requirements and provide a water-conserving mulch to a subsequent crop. A two-year study was designed to test cover crops of rye (Secale cereale L.), hairy vetch (Vicia villosa Roth), and big/lower vetch (Vicia grandiflora Scopoli) for their ability to produce N and to conserve soil water for a succeeding corn (Zea mays L.) crop. We measured the cover crops' biomass, N yield, carbon (C) to N ratio, and influence on a subsequent corn crop grown under two tillage regimes (disk tillage or no-till). Nitrogen content in cover crop biomass at time of corn planting ranged from 37 to 187 kg/ha. Pure stands of hairy vetch and a mixture of hairy vetch plus bigflower vetch had generally higher N yields, and rye was lowest. Rye growing in association with hairy vetch had lower C:N ratios than rye growing alone. Legume C:N ratios remained generally unchanged from earlier (disked) to later (herbicide) kill dates, but total N and biomass typically increased in the last 2 to 3 weeks before corn planting. Soil water retention was affected by tillage in some cases; no-till was superior to disk incorporation in each case where there was a tillage effect. Cover crops with greater biomass resulted in greater soil water retention. Among cover crops, uptake ofNby corn was greater from hairy vetch or hairy vetch plus bigflower vetch mixture. Biological immobilization of N appeared to be reducing N uptake by corn grown in rye residues. Corn in nonlegume plots fertilized with 140 or 210 kg N/ha took up more N than corn following legumes, but there was no corresponding yield increase. Corn biomass yields following the cover crops ranged from 8.6 to 18.0 Mg/ha with no additional fertilizer N. In the second year of the study, average corn yields following hairy vetch (15.3 Mg/ha) or hairy-bigflower vetch mixtures (16.4 Mg/ha) were not statistically different from corn yields produced by a 140 kg N/ha fertilizer rate (17.4 Mg/ha). These results suggest N from a legume cover crop can replace or substantially reduce fertilizer N requirements in corn production systems in the Appalachian region.

Type
Articles
Information
American Journal of Alternative Agriculture , Volume 6 , Issue 3 , September 1991 , pp. 106 - 113
Copyright
Copyright © Cambridge University Press 1991

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References

1.Blevins, R. L., Cook, D., Phillips, S. H., and Phillips, R. E.. 1971. Influence of no-tillage on soil moisture. Agronomy Journal 63:593–596.Google Scholar
2.Bremner, C. A. 1965. Total nitrogen. In Black, C. A. (ed.). Methods of Soil Analysis, Part 2. Agronomy 9:1149–1187. American Society of Agronomy, Madison, Wisconsin.Google Scholar
3.Crawford, R. F., and Kennedy, W. K.. 1960. Nitrates in forage crops and silage: Benefits, hazards, precautions. Miscellaneous Bulletin 37. New York State College of Agriculture, Cornell, Ithaca, New York.Google Scholar
4.Decker, A. M., Holderbaum, J. F., Mulford, R. F., Meisinger, J. J., and Vough, L. R.. 1987. Fall seeded legume nitrogen contributions to no-till corn production. In Power, J. F. (ed.). The Role of Legumes in Conservation Tillage Systems. Proceedings of a National Conference, Athens, Georgia, 27–29 April 1987.Soil Conservation Society of America,Ankeny, Iowa. pp. 21–22.Google Scholar
5.Frye, W. W., Smith, W. G., and Williams, R. J.. 1985. Economics of winter cover crops as a source of nitrogen for no-till corn. Journal of Soil Water Conservation 40:246–249.Google Scholar
6.Herbek, J. H., Frye, W. W., and Blevins, R. L.. 1987. Nitrogen from legume cover crops for no-till corn and grain sorghum. In Power, J. F. (ed.). The Role of Legumes in Conservation Tillage Systems. Proceedings of a National Conference, Athens, Georgia, 27–29 April 1987.Soil Conservation Society of America,Ankeny, Iowa. pp. 51–52.Google Scholar
7.Huntington, T. G., Grove, J. H., and Frye, W. W.. 1985. Release and recovery of nitrogen from winter annual cover crops in no-till corn production. Communications in Soil Sci. and Plant Anal. 16:193–211.CrossRefGoogle Scholar
8.Lyon, T. L., and Bizzel, J. H.. 1911. A heretofore unnoted benefit from the growth of legumes. Agricultural Experiment Station Bulletin No. 294. Cornell University, pp. 365–374.Google Scholar
9.Ma, T. S. 1979. Modern Organic Elemental Analysis. Marcel Deckker, Inc., New York, New York.Google Scholar
10.McVay, K. A., Radcliffe, D. E., and Hargrove, W. L.. 1989. Winter legume effects on soil properties and nitrogen fertilizer requirements. Soil Sci. Society of America Journal 53:1856–1862.CrossRefGoogle Scholar
11.Mitchell, W. H., and Teel, M. R.. 1977. Winter annual cover crops for no-tillage corn production. Agronomy Journal 69:569–573.CrossRefGoogle Scholar
12.Moody, J. E., Jones, J. N. Jr., and Lillard, J. H.. 1963. Influence of straw mulch on soil moisture, soil temperature, and growth of corn. Soil Sci. Society of America Proceedings 27:700–703.Google Scholar
13.Neely, C. L., McVay, K. A., and Hargrove, W. L.. 1987. Nitrogen contribution of winter legumes to no-till corn and grain sorghum. In Power, J. F. (ed.). The Role of Legumes in Conservation Tillage Systems. Proceedings of a National Conference, Athens, Georgia, 27–29 April 1987.Soil Conservation Society of America,Ankeny, Iowa. pp. 48–49.Google Scholar
14.Roberts, C. A., Moore, K. J., and Johnson, K. D. 1989. Forage quality and yield of wheatvetch at different stages of maturity and vetch seeding rates. Agronomy Journal 81:57–60.Google Scholar
15.SAS. 1982. User's Guide: Statistics. SAS Institute, Inc., Cary, North Carolina.Google Scholar
16.Sarrantonio, M., and Scott, T. W.. 1988. Tillage effects on availability of nitrogen to corn following a winter green manure crop. Soil Sci. Society of America Journal 52:1661–1668.Google Scholar
17.Saville, D. J. 1990. Multiple comparison procedures: the practical solution. The American Statistician 44:174–180.CrossRefGoogle Scholar
18.Steel, R. D. G., and Torrie, J. H.. 1980. Principles and procedures of statistics. McGraw Hill, New York, New York.Google Scholar
19.Tisdale, S. L., Nelson, W. L., and Beaton, J. D.. 1985. Soil Fertility and Fertilizers. McMillan, New York, New York.Google Scholar
20.Tyler, D. D., Duck, B. N., Graved, J. G., and Bowen, J. F.. 1987. Estimating response curves of legume nitrogen contribution to no-till corn. In Power, J. F. (ed.). The Role of Legumes in Conservation Tillage Systems. Proceedings of a National Conference, Athens, Georgia, 27–29 April 1987.Soil Conservation Society of America,Ankeny, Iowa. pp. 50–51.Google Scholar
21.Utomo, M., Frye, W. W., and Blevins, R. L.. 1985. Functions of legume cover crops in notill and conventional till corn production. In Hargrove, W. L., Boswell, F. C., and Langdale, G. W. (eds.). Proceedings of the 1985 Southern No-till Conference, 16–17 July 1985,Griffin, Georgia, pp. 127–131.Google Scholar
22.Varco, J. J., Fry, W. W., Smith, M. S., and McKown, C. T.. 1989. Tillage effects on nitrogen recovery by corn from nitrogen-15 labeled legume cover crop. Soil Sci. Society of America Journal 53:822–827.CrossRefGoogle Scholar
23.Wagger, M. G. 1989. Time of desiccation effects on plant composition and subsequent nitrogen release from several winter annual cover crops. Agronomy Journal 81:236–241.CrossRefGoogle Scholar
24.Wilson, D. O., and Hargrove, W. L.. 1986. Release of nitrogen from crimson clover residue under two tillage systems. Soil Sci. Society of America Journal 50:1251–1254.Google Scholar