Explaining yield gaps on farmer-identified degraded and non-degraded soils in a Sahelian irrigated rice scheme

NJAS - Wageningen Journal of Life Sciences - Tập 50 - Trang 277-296 - 2003
P.J.A. Van Asten1,2, M.C.S. Wopereis1, S. Haefele1, M. Ould Isselmou3, M.J. Kropff2
1West Africa Rice Development Association (WARDA), B.P. 96, St. Louis, Senegal
2Crop and Weed Ecology Group, Wageningen University, P.O. Box 430, NL-6700 AK Wageningen, The Netherlands
3Société Nationale pour le Développement Rural (SONADER), B.P. 321, Nouakchott, Mauritania

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