Effect of Cowpea Genotypes on Callosobruchus maculatus

Effect of Cowpea Genotypes on Callosobruchus maculatus

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Cowpea (Vigna unguiculata (L.) walp.) has been cultivated in many countries for many countries .It is one of the important food legume crops in the tropical and subtropical regions covering Asia, Africa, Southern Europe, Central and South America. (Sing and Jackai, 1985, Dioul, 2011).Cowpea is an essential component of cropping system in the drier region and marginal areas of the tropics and subtropics (Duke, 1990).It is a drought tolerant and warm weather crop well adapted to the drier regions where other food legumes do not perform well (Singh, 1987). It fixes atmospheric nitrogen through it...