Journal of Experimental Agriculture International

This study carried out an economics of insecticides usage among cowpea farmers in Kaduna State. Specifically, the study estimated insecticides marginal productivity; the degree of response of demand for insecticides to changes in its prices and the return to cowpea production due to insecticides usage. A multi-stage sampling technique was used to select 150 cowpea farmers who used insecticides in controlling pest in cowpea production in the study area. Information collected includes those of inputs quantities and prices as well as quantity of cowpea output and its farm prices. The logistic specification of the damage control model and its corresponding demand function were used to estimate insecticides marginal productivity and the degree of demand’s response to changes in insecticides prices respectively. A budgetary analytical model was used to estimate the return to cowpea production. The study showed that insecticide marginal value product was Naira 310.06 and the ratio of MVP to insecticide price was 0.48. This is an indication that insecticides were not efficiently utilized. The demand elasticities for the various insecticides were greater than unity indicating that demand for insecticides used in cowpea production in the area studied was own price elastic. The study also found that a return of Naira 787.52 per hectare was obtained due to insecticide usage.