Response for Information on Dimethipin Use Rate on Cotton in California

Regarding Request for Information on Dimethipin Use Rate on Cotton from EPA and USDA

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Date: May 9, 2005

To: Philip Poli
Environmental Protection Specialist
USDA/Office of Pest Management Policy

From: Rick Melnicoe
Director, Western Integrated Pest Management Center

Dear Phil,

In California only five applications of dimethipin were made on cotton in 2003. The rate of 0.31-0.39 lbs a.i. were used. In 2002, there were 30 applications to cotton with a median rate of 0.31 lbs a.i.

I don't believe that changing the label rate to a maximum rate of 0.31 lbs a.i. will adversely impact users in CA.

Rick Melnicoe
Director, Western Integrated Pest Management Center
Director, Office of Pesticide Information and Coordination (UC Statewide
Pesticide Coordinator)
One Shields Avenue
4249 Meyer Hall (FedEx Deliveries only)
University of California
Davis, CA 95616-8588
Phone: (530) 754-8378
Fax: (530) 754-8379