Research Article
Genotype Effects of Cowpea and Soybean on Nodulation, N2-fixation and N Balance in the Northern Guinea Savanna of Nigeria
Department of Soil Science, Faculty of Agriculture/Institute for Agricultural Research, Ahmadu Bello University, P.M.B. 1044, Zaria, Nigeria
R.C. Abaidoo
International Institute of Tropical Agriculture (IITA), P.M.B. 5320, Ibadan, Nigeria
E.N.O. Iwuafor
Department of Soil Science, Faculty of Agriculture/Institute for Agricultural Research, Ahmadu Bello University, P.M.B. 1044, Zaria, Nigeria
O.O. Olufajo
Department of Agronomy, Institute for Agricultural Research, Ahmadu Bello University, P.M.B. 1044, Zaria, Nigeria
Narmadha Reply
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