Kwesiga, Freddie; Franzel, Steven; Mafongoya, Paramu; … - International Food Policy Research Institute (IFPRI) - 2005
"The decline in soil fertility in smallholder systems is a major factor inhibiting equitable development in much of sub-Saharan Africa. Some areas fallow in order to strength soil fertility for later planting, but as populations increase, demand follows and continuous cropping becomes the norm...