Rotational effects of cowpea genotypes and P fertilization on the yield of sorghum on P-deficient soils of Sudan and Sahel savannas of west Africa

Saidou, A.K.; Abaidoo, R.C.; Iwuafor, Emmanuel N.O.; Sanginga, Nteranya; Singh, B.B.; Kolawole, G.O. 2007. Rotational effects of cowpea genotypes and P fertilization on the yield of sorghum on P-deficient soils of Sudan and Sahel savannas of west Africa [abstract] [online]. In: Bationo, André; Okeyo, Jeremiah M.; Waswa, Boaz S.; Mapfumo, Paul; Maina, Fredah; Kihara, Job (eds.). Innovations as key to the green revolution in Africa: Exploring the scientific facts: Abstracts: Symposium [online]. Centro Internacional de Agricultura Tropical (CIAT), Tropical Soil Biology and Fertility (TSBF), Nairobi, KE. p. 94.