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ARS Home » Midwest Area » Wooster, Ohio » Application Technology Research » Research » Publications at this Location » Publication #67769
Title: EFFICACY OF ROOT BALL DIPS FOR CONTROLLING WHITE GRUBS

Author
item NIELSEN, DAVID - OSU/OARDC-DEPT OF ENTOMOL
item KLEIN, MICHAEL

Submitted to: Proceedings of the USDA Interagency Japanese Beetle Research Forum
Publication Type: Proceedings
Publication Acceptance Date: 2/15/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: The Japanese beetle and other white grubs have been found infesting nursery stock in the eastern United States. Western states and parts of Canada lack these pests and have established quarantines to keep them out. Ball and burlap (b & b) nursery plants are allowed to be shipped from infested areas to uninfested areas if they are first dipped in a solution of Dursban 4E (chlorpyrifos) at 2 lb ai/100 gal. We evaluated reduced rates chlorpyrifos (Dursban TI and 50 WP) and four other chemicals (Oftanol 2F, Turcam 76 WP, Scimitar 10 CS, and Dylox 80 W) on naturally infested 15-18" diameter b & b lilac and witch hazel plants. Root balls were dipped for 30 seconds, and treatments after four weeks. Most larvae were European chafers. Treatments consistently worked better on witch hazel than lilac indicating that information is needed on a variety of plants before recommendations are made. Although none of the chemicals completely eliminated white grubs from the balls, Oftanol and Dursban were the most efficacious insecticides. No phytotoxicity was observed from any of the chemicals used.