Chemical composition and toxicity of some Agro waste-derived insecticides against Angoumois grain moth, Sitotroga ceralella (Olivier) [Lepidoptera: Gelechiidae] infesting stored paddy grains

Abstract Background Agriculture being one of the major practices in world has contributed to environmental pollution, especially developing countries where there were no equipment recycle agricultural wastes. Considering high level infestation paddy by Sitotroga cerealella and pollution caused wastes, this research investigated chemical composition toxicity agro wastes (rice husk, maize cob, groundnut cowpea pods) as eco-friendly protectants against . Parameters assessed include adult mortality, oviposition, emergence egg hatchability. Gas chromatography mass spectrophotometry used isolate characterize active compounds present most effective crude extract. Results The results study revealed that all showed mortality effect on S. Cowpea pod powder was toxic moth 33.33%, 36.67%, 46.67%, 50% 60% at concentrations 0.1 g, 0.2 0.3 0.4 g 0.5 g/20 grains after 24 h exposure, respectively. pod, cob extracts 100% concentration ml/20 96 lethal LC 50 90 0.16 0.64 ml which lowest waste extract tested. GC–MS analysis 19 extract, 9, 12-Octadecadienoic acid (a methyl ester) highest percentage total 39.57% 4-Pentenal, 2-methylene (0.12%) least total. Conclusion All observations effective. findings also suggested selected have a promising insecticidal potential can be alternatives synthetic insecticides for control stored product insects.