Cropping systems in the Sudano-Sahelian zone: implications on soil fertility management over varied seasons - Bationo, B. André; Traoré, Z.; Kimetu, J.; Bagayoko, M; Kihara, Job Maguta; Bado, V.B.; Lompo, M; Tabo, Ramadjita; Koala, Saidou (Springer, 2012)