Drivers of Organic Fertiliser Adoption and Use Intensity Among Smallholder Maize Farmers in Lake Victoria Region, Western Kenya

Abstract

Smallholder farmers account for about 75% of maize production in Kenya. The current average on-farm productivity is 1.43 ton/ha against the potential of 6 ton/ha. In Western Kenya, low soil organic carbon is one of the contributors to the low maize productivity. Studies have shown that organic fertilizers contribute towards increase in soil productivity. However, there is paucity of information on the relationship between drivers of organic fertilizers adoption and use intensity among the farmers, which the study seeks to address. A total of 358 farmers were interviewed in the 2020/21 growing seasons. Heckman’s two-stage model was estimated. The results demonstrate that age, education, gender, soil quality perception and access to supportive resources are pivotal in shaping organic farming decisions. There is need for targeted extension services to less educated and older farmers. Off-farm income generation should be encouraged. Integrated soil fertility management approaches that address nutrient replenishment and soil erosion control is necessary, and there is need to promote mechanization or subsidization of organic fertilizer application on larger farms as this may help overcome labour constraints and improve organic fertilizer adoption on a broader scale. The results may be a source of literature for subsequent studies in related fields.