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Effects of Fenvalerate and Azinphosmethyl on Scale Insects and Their Natural Enemies in Loblolly Pine Seed OrchardsAuthor(s): Stephen R. Clarke; Gary L. DeBarr; C. Wayne Berlsford
Source: Res. Pap. SE-279. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 16 p.
Publication Series: Research Paper (RP)
Station: Southeastern Forest Experiment Station
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DescriptionGround applications of azinphosmethyl caused significant mortality of the scale insects Tourneyella pini (King), Pseudophilippia quaintancii Cockerell, and Oracella acuta (Lobdell), whereas aerial applications did not. Fenvalerate applications generally did not cause significant mortality, and alternating applications of the two insecticides produced infestations intermediate between those treated only with azinphosmethyl or fenvalerate. Parasitism and predation rates were sometimes significantly lowered by insecticide applications.
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CitationClarke, Stephen R.; DeBarr, Gary L.; Berlsford, C. Wayne. 1990. Effects of Fenvalerate and Azinphosmethyl on Scale Insects and Their Natural Enemies in Loblolly Pine Seed Orchards. Res. Pap. SE-279. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 16 p.
KeywordsPyrethroids, Tourneyella pini, oracella acuta, Pseudophilippia quantancii, secondary pests
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