A novel microencapsulated formulation of pyrethrins to control resistant pests

摘要

Insecticide resistance can be caused by various factors, the most important of which are metabolic detoxification and target-site resistance. The enzymes which can confer metabolic resistance are esterases, glutathione-S-transferases and mixed function oxidases. Synergists are natural or synthetic chemicals, which alone are non-toxic at the rate of treatment, but which significantly increase the toxicity of an insecticide against insect pests. Synergism thus occurs when the toxicity of a mixture is greater than expected on the basis of the independent toxicity of each of the components. This means, for example, that insecticides that are readily metabolised become more potent when applied with a synergist that blocks insecticide metabolism.