Chapter 21

Integrated Pest Management for Greenhouse Crops

Chemical Pest Control Tactics

Conventional chemicals (i.e., synthesized by the agrochemical companies) are used only as a last resort in an IPM program, but sometimes are the most effective means of control. Conventional pesticides are man-made and are the largest group of pesticides used by growers. Major benefits associated with the use of conventional pesticides are their effectiveness, the speed and ease of controlling pests, and, in many instances, their reasonable cost compared with other control options. Because pesticides can be formulated as liquids, powders, aerosols, dusts, granules, baits, and slow-release forms, they are very versatile.

Types of Chemical Pesticides

There are many classes of synthetic pesticides, which consist of organochlorines, organophosphates, carbamates, and pyrethroids. The synthetic compounds include most of the insecticides, herbicides, and fungicides. Before using any pesticide, it is important to understand its relative toxicity, mode of action, rate of application, mixing and application guidelines, reentry intervals, persistence, and environmental impact. One can learn most or all these issues by reading the most current label. Chemical pesticides are discussed in more detail in Chapter 24, Greenhouse Pesticides.

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