Effect of five medicinal plant leaves on survival, oviposition and progeny development of cowpea bruchid, <em>Callosobruchus maculatus</em> (F.) infesting cowpea seeds in storage

Over 90% of the insect damage to cowpea seeds is caused by Callosobruchus maculatus. Although, many chemicals have proven their efficacy against C. maculatus, they adversely affect natural environment. Death non-targeted species which are enemies other pests and development resistance possible. Therefore, current study was conducted determine effect plant leaves Murraya koenigii (“Karapincha”), Pandanus amaryllifolius (“Rampe”), Vitex negundo (“Nika”), Pavetta indica (“Pavatta”) Croton aromaticus (“Wel keppetiya”) on adult mortality, oviposition, progeny Plant were tested in both fresh form powdered form. The mixed with two concentrations followed introduction 5 pairs maculatus adults. maximum minimum oviposition observed when treated leaves. mortality increased 100% combination – P. V. (WPN) leaf powders. This suggests that or powder can be used protect storage.