Effect of combining organic and inorganic phosphorus sources on maize grain yield in a humic-nitisol in Western Kenya

Ojiem, J.O.; Palm, Cheryl Ann; Okwuosa, E.A.; Mudeheri, M.A. 2003. Effect of combining organic and inorganic phosphorus sources on maize grain yield in a humic-nitisol in Western Kenya. In: Bationo, André (ed.). Managing nutrient cycles to sustain soil fertility in sub-Saharan Africa. Academy Science Publishers (ASP); Centro Internacional de Agricultura Tropical (CIAT), Nairobi, KE. p. 347-358.