Extent of Successful Use Indoor crops

The use of augmentative biological control has become widespread in greenhouses in Northern Europe and Canada that produce vegetables, with over 5000 ha using E. formosa for whitefly control and over 7000 acres using P. persimilis for spider mite control. These amounts, however, still represent only a small percentage of the world's protected culture. Biological control is used much less often in Southern Europe and Japan, areas with extensive greenhouse vegetable production, because of differences in climate and greenhouse construction. Development of methods effective in warm climates, however, is underway. Similarly, use of biological control is very limited in greenhouses producing bedding plants or floral crops, the major focus of greenhouse production in the United States.

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