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What Is Pesticide Resistance? Part II

Last week’s column described how pesticide resistance develops. Today describes how it can be prevented and next week how to manage it once it occurs. But first a brief review of how this problem arises. For more detail see last week’s column.
Whether a pesticide or an antibiotic, the chemistry affecting the target organism has a mode of action (the way it attacks the organism). Genetic variation of the pest population means susceptibility to the pesticide is not uniform and some small number are either less susceptible or immune to the chemistry. If the same mode of action ...

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