Toxicity of eco-friendly chemicals to eoccinellid predators on Okra

摘要

Field experiments were carried out to study the relative toxicity of different groups of chemicals viz., dichlorvos, Nimbecidine, B.t. (Delfin), novaluron (IGR), spinosad and imidacloprid (neonicotinoid) and combination of dichlorvos, spinosad and imidacloprid with novaluron and B.t. against predatory eoccinellid beetles Cheilomenes sexmaculata (Fabricius) and Micraspis univittata (Hope), The results indicated that dichlorvos and imidacloprid alone were found to be toxic compared to their combinationwith eco-friendly chemicals. The treatments B.t. and nimbecidine were found to be relatively safe to cocclnellids.