Evaluation of kerosene for the control of Callosobruchus maculates (F.) and Sitophilus zeamais (L.) on stored cowpea and maize seeds

Abstract

Kerosene was evaluated in the laboratory as a protectant of stored cowpea and maize seeds against infestation by Callosobruchus maculates (F.) and Sitophilus zeamais L., respectively. The kerosene was applied at the rate of 5 and 10 ml kg-1 of cowpea and maize seeds. The results showed that it significantly (P<0.05) reduced oviposition and progeny emergence of C. maculates and S. zeamais. In addition, kerosene significantly (P<0.05) depressed the development of S. zeamais and, consequently, reduced the mean percentage weight loss in maize. Although kerosene reduced oviposition and progeny emergence in both insects, even at the low dosage of 5 ml kg^-1, it did not adversely affect the viability of both seeds after 6 months' storage. Kerosene seems to be a good substance for protecting stored cowpea and maize seeds against C. maculates and S. zeamais. Therefore, peasant farmers could be encouraged to use it to store seeds of these two crops.

Ghana Journal of Agricultural Science Vol. 38, 2005: 81-85