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* Galloway, J. N., W. H. Schlesinger, H. Levy, A. Michaels, and J. L. Schnoor. 1995. Nitrogen-Fixation - Anthropogenic Enhancement-Environmental Response. Global Biogeochemical Cycles 9:235-252.
* Giller, K. E., and G. Cadisch. 1995. Future benefits from biological nitrogen fixation: An ecological approach to agriculture. Plant and Soil (Historical Archive) 174:255-277.
* Grafton-Cardwell, E. E., Y. L. Ouyang, and R. L. Bugg. 1999. Leguminous cover crops to enhance population development of Euseius tularensis (Acari
* Haramoto, E. R., and E. R. Gallandt. 2004. Brassica cover cropping for weed management: A review. Renewable Agriculture and Food Systems 19:187-198.
* Hill, E.C., M. Ngouajio, and M.G.Nair. 2006. Differential responses of weeds and vegetable crops to aqueous extracts of hairy vetch and cowpea. HortSci. 41:695-700.
Baris 58:
* Lazzeri, L., and L. M. Manici. 2001. Allelopathic effect of glucosinolate-containing plant green manure on Pythium sp and total fungal population in soil. Hortscience 36:1283-1289.
* Lu, Y. C., K. B. Watkins, J. R. Teasdale, and A. A. Abdul-Baki. 2000. Cover crops in sustainable food production. Food Reviews International 16:121-157.
* Morgan, M. F., H. G. M. Jacobson, and S. B. LeCompte. 1942. Drainage water losses from a sandy soil as affected by cropping and cover crops
* Nagabhushana, G. G., A. D. Worsham, and J. P. Yenish. 2001. Allelopathic cover crops to reduce herbicide use in sustainable agricultural systems. Allelopathy Journal 8:133-146.
* New Farm, The. Plans for no-till cover crop roller free for the downloading. [http://www.newfarm.org/depts/notill/features/2006/0506/drawings.shtml]
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