Abstract
Effect of cashew (Anacardium occidentale) nut shell stored and fresh extracts on cowpea bruchid, Callosobruchus maculatus (Fabricius.) (Coleoptera: Chrysomelidae)
Highlights
Cowpea (Vigna unguiculata (L.) Walp) is originated from West and Central Africa, from where its cultivation and production spread to Latin America and South East Asia (Edeh & Igberi, 2012)
The main objective of this study was to evaluate the effect of stored and fresh ethanolic extracts of cashew (Anacardium occidentale) nut shell on cowpea weevil C. maculatus (F.) (Coleoptera: Chrysomelidae)
Fifty (50) unsexed adults of C. maculatus were picked with the aid of hair brush to infest cowpea seeds in a transparent plastic container which was covered with muslin cloth held tightly by perforated lid to ensure aeration and prevent escape of the insects
Summary
Cowpea (Vigna unguiculata (L.) Walp) is originated from West and Central Africa, from where its cultivation and production spread to Latin America and South East Asia (Edeh & Igberi, 2012). About 95% of global production reported in FAOSTAT is in West Africa, with Nigeria being the largest producer and consumer of cowpea, producing 3.4 million tonnes in 2017 (FAOSTAT, 2019; Samireddypalle et al, 2017). It has been reported that the crop is a source of livestock feed and revenue in the tropics (Onekutu et al, 2015). Production of this crop faces enormous problems; notable among them is insect pest infestation. Post-harvest losses to storage insect pests limit cowpea production in SubSaharan Africa, which otherwise accounts for about 70% of total world production (IITA, 2010)
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