Information Requests Monitoring System

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Request ID: 146
Request From: Steve Toth
Date Requested: Mar 06, 2006
Request: Note the following request for information on the need of PCNB seed treatment for barley, peas, rice and soybeans. If this is an important use in your state/territory, we need to let OPMP know immediately. Please circulate and send any responses as soon as possible. Thanks. Steve Toth ---------------------------------------- PCNB, a foliar and seed treatment fungicide, is currently undergoing review at EPA. We thought the seed treatment uses were safe, but the main registrant, Chemtura, is considering dropping the PCNB seed treatment uses for barley, peas, rice and soybeans due to residue chemistry costs. In order to have an impact on the decision by EPA and the registrant to cancel certain seed treatment crops, we need to respond, at least generally, within a week or so. The basic questions are: Is PCNB and important seed treatment fungicide on barley, peas, rice , or soybeans in your state? If so, why? Can you estimate the use of any important PCNB seed treatments on these crops in your state? Please only respond if seed treatment with PCNB is important on one of these crops in your state. Thanks for your consideration of this development. Kent L. Smith, Ph.D. Plant Pathologist Office of Pest Management Policy (OPMP) Agricultural Research Service (ARS) United States Department of Agriculture (USDA) 1400 Independence Ave, SW Room 3859, South Ag Building Washington, DC 20250-0315 202-720-3186 (voice) 202-720-3191 (fax) ksmith@ars.usda.gov www.ars.usda.gov/opmp/

Responses
Responder: Erik Stromberg
State: VA
Date Requested: Mar 07, 2006
Response: Barley: Terra Coat LT-2 (PCNB) is registered as a seed treatment for use to control covered smut caused by Ustilag hordei. I suspect that very little if any is actually used in Virginia. Soybeans: Vitavax-PCNB is registered for use to control Rhizoctonia solani, Sclerotium rolfsii, and Pythium species as a seed treatment. I suspect that little if any is used in Virginia as most soybeans are not treated with a seed treatment. Rice is not grown in the state. I don't think I know of any commercial pea production in the state, however, I don't have any responsibilities for vegetable crops. You may wish to contact our Vegetable Pathologist, Dr. Steve Rideout at srideout@vt.edu

Responder: Steve Koenning
State: NC
Date Requested: Mar 10, 2006
Response: PCNB is not an important seed treatment on soybean. Steve Koenning Department of Plant Pathology North Carolina State University

Responder: Charles Luper
State: OK
Date Requested: Mar 10, 2006
Response: According to Dr. John Damicone he feels this is not a major need for Oklahoma and other seed treatments do exist. So for Oklahoma PCNB is not a big need.

Responder: Mark Mossler
State: PR
Date Requested: Mar 14, 2006
Not Important/Relevant to my state(s)
Response:

Responder: Mark Mossler
State: FL
Date Requested: Mar 14, 2006
Not Important/Relevant to my state(s)
Response:

Responder: Mark Mossler
State: VI
Date Requested: Mar 14, 2006
Not Important/Relevant to my state(s)
Response:

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