Information Requests Monitoring System

This data is maintained as an archive.

Request ID: 117
Request From: Steve Toth
Date Requested: May 04, 2005
Request: Note the following request for information regarding tetrachlorvinphos (TCVP) use for insect control on poultry and livestock. Please forward this request to the experts in your respective states/territories and submit the responses to the Southern Region IPM Center Information Requests Monitoring System. We need to have the responses by the MAY 12, 2005 deadline. -------------------------------------------- EPA is finalizing the RED on tetrachlorvinphos (TCVP). They are considering a minor use critical exemption for the wettable powder paint and dust formulations on poultry and livestock for insect control. Use patterns of most WP and EC formulations of TCVP will remain intact. EPA lacks the necessary information to rule favorably on this request. Hence, they have asked us at USDA, or more properly the IPM Centers to fill the void in their knowledge. Questions: 1) Is there any current use of the Dust or WP paint formulations of TCVP on poultry or livestock? If so, how much? 2) Is this a critical use to the producers using it? Why? 3) What alternatives, if any, exist? Why are they not used in place of the dust and WP paint formulations? EPA is poised to make a decision soon, so we are requesting you respond by May 12th. Thanks for your attention to this request. Sincerely, 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

Responses
Responder: Jeffery Tomberlin
State: TX
Date Requested: May 09, 2005
Response: 1) Is there any current use of the Dust or WP paint formulations of TCVP on poultry or livestock? If so, how much? Yes, there is a current use for the dust and WP formulations of TCVP on poultry and livestock. Because primary emphasis of insecticide use in poultry and livestock now rests on the use of pyrethroids, the organophosphaste TCVP provides a safe alternative which will allow for pesticide rotations. By doing so, the likelihood of insecticide resistance is reduced. Removing this insecticide from the market could put additional emphasis on the use of pyrethroids and consequently raise the probability of developing resistance problems. 2) Is this a critical use to the producers using it? Why? Yes. See above. 3) What alternatives, if any, exist? Why are they not used in place of the dust and WP paint formulations? Alternatives, such as Sevin dust, are available; however, many of them are not as effective for suppressing filth flies and other pest insects asTCVP. Jeffery K. Tomberlin, Ph.D. Assistant Professor & Extension Specialist Texas A&M University Texas Cooperative Extension 1229 North U.S. Hwy. 281 Stephenville, TX 76401 Phone: 254 968 4144 Fax: 254 965 3759

Responder: Robert (Bob) Bellinger
State: SC
Date Requested: May 10, 2005
Response: Steve, To date (10 May) I have not receive any returned comments on this item. We do not have anyone working directly in this area (med/vet or livestock pests); however I sent this to a lot of folks who might have some knowledge of the info requested. Bob B.

Responder: Mark Mossler
State: FL
Date Requested: May 11, 2005
Not Important/Relevant to my state(s)
Response: The poultry industry is highly vertically integrated and little help is asked for by this group. UF's retired extension poultry pest person was unfamiliar with this active ingredient, which indicates that this material is of low use/utility in FL.

Responder: Mark Mossler
State: PR
Date Requested: May 11, 2005
Not Important/Relevant to my state(s)
Response: No response to inquiries indicates low use/utility for this material in PR.

Responder: Mark Mossler
State: PR
Date Requested: May 11, 2005
Not Important/Relevant to my state(s)
Response: No response to inquiries indicates low use/utility for this material in PR.

Responder: Kelly Loftin
State: AR
Date Requested: May 12, 2005
Response: Steve, I agree with Jeff Tomberlin's comments. Tetrachlorvinphos is currently used in both poultry and livestock as an important alternative to the pyrethroids. The critical use by producers is resistance management. Kelly Loftin, Extension Entomologist, 2301 South University Avenue, Little Rock, Arkansas 72203 501-671-2361

Return to Other Requests