Crop diversification for weed management - Ecological Management of Agricultural Weeds - page 373

nutrients.In Proceedings of the International Workshop on Intercropping , 10-13
January 1979, Hyderabad, India, ed.R.W.Willey, pp.188-201.Patencheru,
India: International Crops Research Institute for the Semi-Arids Tropics
(ICRISAT).
Staver, C.(1989 a ).Why farmers rotate fields in maize-cassava-plantain bush fallow
agriculture in the wet Peruvian Amazon. Human Ecology ,17, 401-26.
Staver, C.(1989 b ).Shortened bush fallow rotations with relay-cropped Inga edulis and
Desmodium ovalifolium in wet central Amazonian Peru. Agroforestry Systems ,8,
173-96.
Staver, C.(1991).The role of weeds in the productivity of Amazonian bush fallow
agriculture. Experimental Agriculture ,27, 287-304.
Staver, C., Bradshaw, L., & Somarriba, S.(1993).Ground cover management in Central
American shaded coffee: selective weeding, mulch, and perennial living covers.
Agronomy Abstracts (American Society of Agronomy),85, 61.
Steiner, K.G.(1984). Intercropping in Tropical Smallholder Agriculture with Special Reference to West
Africa. Eschborn, Germany: Deutsche Gesellschaft fur Technische
Zusammenarbeit (GTZ).
Sturz,A.V., & Bernier, C.C.(1987).Survival of cereal root pathogens in the stubble and soil
of cereal versus noncereal crops. Canadian Journal of Plant Pathology ,9, 205-13.
Sumner, D.R.(1982).Crop rotation and plant productivity.In CRC Handbook of Agricultural
Productivity , vol.1, ed.M.Rechcigl, pp.273-313.Boca Raton, FL: CRC Press.
Thurston, H.D. (1997). Slash/Mulch Systems: Sustainable Methods for Tropical Agriculture.
Boulder, CO: Westview Press.
Trenbath, B.R.(1983).The dynamic properties of mixed crops.In Frontiers of Research in
Agriculture , ed.S. K.Roy, pp.265-86.Calcutta, India: Indian Statistical Institute.
Trenbath, B.R.(1993).Intercropping for the management of pests and diseases. Field Crops
Research ,34, 381-405.
Tripathi, B., & Singh, C.M.(1983).Weed and fertility management using maize/soyabean
intercropping in the northwestern Himalayas. Tropical Pest Management ,29,
267-70.
United States Department of Agriculture (USDA) (1973). Monoculture in Agriculture: Extent ,
Causes , and Problems. Report of the Task Force on Spatial Heterogeneity in Agricultural
Landscapes and Enterprises. Washington, DC: US Department of Agriculture.
United States Department of Agriculture (USDA) (1999). 1997 Census of Agriculture.
Washington, DC: US Department of Agriculture, National Agricultural Statistics
Service.
Vandermeer, J.H.(1989). The Ecology of Intercropping. Cambridge, UK: Cambridge University
Press.
Warnes, D. D., & Andersen, R.N.(1984).Decline of wild mustard ( Brassica kaber ) seeds in soil
under various cultural and chemical practices. Weed Science ,32, 214-17.
Weil, R., & McFadden, M. E.(1991).Fertility and weed stress effects on performance of
maize/soybean intercrop. Agronomy Journal ,83, 717-21.
Welker,W.V., & Glenn, D.M.(1989).Sod proximity influences the growth and yield of
young peach trees. Journal of the American Horticultural Society ,114, 856-9.
Willey, R.W.(1975).The use of shade in coffee, cocoa, and tea. Horticultural Abstracts ,45,
791-8.