Date: 3/30/99

Time: 2:45

Type: Symposium

Number: 169

FQPA - Impact on strawberries

*D. Mahr, Department of Entomology, University of Wisconsin, Madison, WI 53706
Contact e-mail: dmahr@entomology.wisc.edu

In the upper Midwest, arthropod pressure on strawberry is generally light to moderate. Tarnished plant bug is often a key pest. Strawberry bud weevil, strawberry leafroller, aphids, spittlebugs, cyclamen mite, and twospotted spider mite can be occasionally or locally damaging. In a 1997 NAPIAP report, the ten most heavily used insecticides in strawberry (ranked by pounds of active ingredient) were reported to be malathion, carbaryl, methomyl, insecticidal soaps, propargite, chlorpyrifos, fenbutatin-oxide, endosulfan, dicofol, and diazinon. Five of these compounds are either organophosphates or carbamates and these are under close scrutiny by EPA. Predictions are that usage of these products will substantially be reduced or changed. Recent registrations of two synthetic pyrethroid insecticides, fenpropathrin and bifenthrin, will help fill the gaps created should organophosphate and carbamate registrations be lost. There are several non-chemical approaches to arthropod management, but these have rather limited usage.

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