Abstract
Integrated mite control based on biological control of spider mites, supplemented with physiologically selective acaricides and chemical control of other insect and disease pests of pome fruits, has been studied and implemented in many apple- and some pear-growing areas of North America. Implementation of these methods has not been complete and misuse of physiologically selective acaricides by users has been common. Recently, resistance to the organotin acaricides has developed and the number of effective acaricidal compounds has dwindled alarmingly. Fortunately, several experimental miticides (e.g., clofentezene, hexythiazox, abamectin) may be registered soon for these crops. If these products are then misused, resistance to them may also develop rapidly. Changes are needed in the policies and practices for implementing integrated mite control. Recommendations for increased maintenance research, expanded extension education, better industry cooperation, and greater grower compliance are suggested.
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