Professor Raymond Cloyd is a research and extension specialist based at Kansas State University, working in the areas of integrated pest management, plant protection, horticultural cropping systems, pesticides and insect-plant interactions. We present an extract from a paper by Professor Cloyd on pesticide resistance, an important issue for all flower growers who use chemical products to manage crop pests.
Insect and mite pests of greenhouse-grown horticultural crops are usually managed with insecticides and miticides. However, many insect and mite pests are able to adapt to various human disturbance factors, including pesticide applications. Continual reliance on insecticides can eventually lead to resistance, which can mean that the pesticide will no longer kill a sufficient number of the pests to be considered effective.

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