Biological control of Pacific mites and Willamette mites in San Joaquin Valley vineyards: I. Role of Metaseiulus occidentalis

D. L. Flaherty and C. B. Huffaker

Hilgardia, 1970, vol. 40, issue 10

Abstract: Population studies in southern San Joaquin Valley vineyards showed that the distributional patterns of Willamette mite, Eotetranychus willamettei Ewing, and Pacific mite, Tetranychus pacificus, differ in the Valley, in the vineyard, and on the vine itself. Pacific mite generally does best under hot and dry conditions while Willamette mite prefers cooler and more humid conditions, although there is considerable overlapping of the two species.

Keywords: Environmental; Economics; and; Policy (search for similar items in EconPapers)
Date: 1970
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