2015-08-072015-08-071999http://localhost:8080/dspace/handle/0/8562Most farmers In Siaya District, Western Kenya, regard soil fertility decline as one of their priority problems. It results In low crop Yield, poverty and malnutrition This paper analyses how farming systems In Siaya District have evolved and resulted In environmental degradation, what farmers' perceptions are of soil fertility decline and how they manage It. The paper concludes with an assessment of the potential of some new technologiesenhttp://creativecommons.org/licenses/by/3.0/Book30Soil fertilityCultivationCrop yieldCattle