Toxicity of essential oils on cabbage seedpod weevil (Ceutorhynchus obstrictus) and a model parasitoid (Nasonia vitripennis)

Plant essential oils are being increasingly studied as a potential environmentally friendly alternative to synthetic insecticides. The insecticidal efficacy of on the cabbage seedpod weevil ( Ceutorhynchus obstrictus ), an important oilseed rape pest, has not been previously tested. We examined impact six C . via contact with dry residues leaf and flower surfaces. also effect these model non-target parasitoid wasp, Nasonia vitripennis Exposure cumin Cuminum cyminum ) cinnamon Cinnamomum verum (applied leaves) resulted in significant loss mortality immobility adults. Treatment oil at 1.5% 50.71% 87.3% combined oil, concentration, 88.8% among 24 h post-treatment. All treatments 0.3% concentration caused high N. greatest were observed F vulgare (54 53% respectively). At 0.1% T vulgaris significantly reduced parasitoids mobility all 100% N after 3 h. Our study revealed that may have management However, their organisms, including parasitoids, needs be more thoroughly determine main compounds integrated pest management.