The efficacy of some botanicals in controlling Adzuki bean beetle, Callosobruchus chinensis in stored chickpea

摘要

Thirteen botanicals were evaluated for their efficacy in controlling Adzuki bean beetle, C. chinensis, in stored chickpea using the improved variety Marye. The desired plant part was dried, ground using mortar and pestle and mixed with the grain at5% w/w. Among the botanicals, only two plant species, 'Birbira' (Millettia ferruginea) and fermented tobacco (Nicotiana tabacum), gave complete protection for six months, although 33% of the seeds treated with fermented tobacco contained eggs of the beetle. M. ferruginea deterred egg laying, whereas fermented tobacco killed the larvae either before or shortly after they bored the seed coat. Both had no negative effect on germination of chickpea. The ten species used by farmers in place of pesticides were not effective in controlling this pest.