Information Requests Monitoring System

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Request ID: 85
Request From: Steve Toth
Date Requested: Aug 06, 2004
Request: Please note the following request regarding the usage and benefits of thiram. Pass this request along to specialists in your respective states and send us the responses. The deadline is August 26, 2004. The outcome of the EPA regulatory assessment of thiram will likely hinge on a determination of the benefits that thiram provides to agriculture. In the absence of a clear benefit statement, EPA may decide to restrict or eliminate some usage due to a lack of clear benefit. The risk of foliar uses of thiram (strawberries and apples) centers on some neurotoxity questions that have not been answered. Thiram seed treatments, that we thought were safe, are now in question due the risk of bird consumption of treated seed. Seed treatments are of special concern because there is no publicly available usage data for these uses. Therefore, if the benefits of continued use of thiram are found to exceed or offset the perceived risks, we may be able to retain most uses and possibly reinstate any lost uses when favorable study results are submitted. Could you request that the states in your region supply the needed information? To simplify this procedure, we have developed the attached questionnaire, which provides an outline for the usage and benefits of thiram. EPA has reviewed this questionnaire. For states in the Southern Region, we have identified state-crop combinations for which we need information. Of course, information on any crops that are registered is welcome. We have simply identified those crops with the most significant thiram usage and those states with a significant share of those crops national acreage. Please encourage states listed as having critical state-crop combinations to respond to the survey, even if they use little or no thiram. This will avoid EPA default assumptions of 100% usage. Registered foliar uses: apples, peaches, and strawberries Registered seed treatment uses: barley, canola, corn, cotton, flax, millet, oats, onions, peanuts, rice, rye, soybeans, sugarbeets, sunflower, vegetables, and wheat. Critical state-crop combinations in your region that we have identified are (NOTE: please lump vegetable uses as one group): Alabama: Cotton Arkansas: Cotton Florida: Strawberries, Turf, and Vegetable group Georgia: Cotton, Onions, and Vegetable group Louisiana: Cotton Mississippi: Cotton North Carolina: Cotton and Turf Oklahoma: Wheat Tennessee: Cotton Texas: Cotton, Oats, Onions, Vegetable group, and Wheat Thanks for your help. If some questions cannot be answered easily or do not have answers, please send the questionnaire in anyway. Incomplete survey forms are better than no survey forms! I may follow-up this survey with a telephone call for certain crops where we need additional information. Could we ask our colleagues to respond by August 26? Thank you, Kent *********************************************** 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: Mark Mossler
State: FL
Date Requested:
Response: Kent and Steve, I have entered the Pesticide Info. Office’s response with regard to FL strawberry production directly into the docket (OPP-2004-0183-0014). Somehow it is coming up as a citizen comment. Let me know if there are any other questions. Regards, Mark Mossler UF/IFAS Pesticide Info. Office 352 392-4721

Responder: Ples Spradley
State: AR
Date Requested:
Response: Kent, Here is information you requested on thiram use. This response concerns rice and is from Dr. Rick Cartwright, Extension Plant Pathologist. I am waiting to hear from Dr. Terry Kirkpatrick, Plant Pathologist, Univ. of Arkansas, concerning thiram use in cotton. I will forward it once I get it. Ples J. Ples Spradley Associate Professor Department of Plant Pathology Cooperative Extension Service University of Arkansas P.O. Box 391 2301 S. University Little Rock, AR 72203 501-671-2234 Mobile: 501-944-0941 FAX: 501-671-2252 pspradley@uaex.edu
Attachment included in response [Download]

Responder: Charles Luper
State: OK
Date Requested:
Response: Here is Dr. Bob Hungers response to the Thiram questionare in relation to thiram use on wheat in Oklahoma. Charles Luper, Extension Associate Pesticide Safety Education Program 127 NRC, OSU Stillwater, OK 74078-3033 (405) 744-5808 (405) 744-6039 FAX
Attachment included in response [Download]

Responder: Robert (Bob) Bellinger
State: SC
Date Requested: May 10, 2005
Not Important/Relevant to my state(s)
Response: Steve, FYI, I passed this on to folks who work in these crops in SC. I did not get (nor expect) responses. Bob B.

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