UC Mite 83 Chapter 5. Robert F. W. Schroder. 1983. The potential use of mites in biological control of field crop pests. Pages 36-40. In: Marjorie A. Hoy, Gary L. Cunningham, Lloyd Knutson (editors). 1983. Biological Control of Pests by Mites. Proceedings of a conference held April 5-7, 1982, at the University of California, Berkeley, Agricultural Experiment Station, Division of Agriculture and Natural Resources, University of California, Special Publication 3304, 185 pages.

Keywords: state of the art, predatory mites, the predator Phytoseiulus persimilis was introduced into Bulgaria for spider mites Tetranychus urticae, Phytoseiulus persimilis was imported from Canada for control of spider mites in strawberries in California, parasitic mites, to be effective predatory mites must have a shorter life cycle than their prey, have a high searching ability, a high degree of specificity, a high reproductive capacity, capable of consuming many prey, have the same micro-habitat as their prey, a seasonal cycle corresponding to that of the prey, ability to tolerate weather extremes, ability to tolerate pesticides