Information Requests Monitoring System

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Request ID: 163
Request From: Steve Toth
Date Requested: Sep 29, 2006
Request: Note the following request fro information on malathion use on Christmas trees. Please forward this request to the experts in your respective states and territories and submit any responses to the Southern Region IPM Center Information Request Monitoring System by Monday, October 9, 2006. Thanks. Steve Toth ------------------------------------------------------------ Dear Colleagues: EPA is finalizing its label decisions for malathion. Please let me know if the following EPA decisions will be acceptable for Christmas tree growers: (1) Non-ULV 3.2 lb ai/acre maximum single rate , two applications maximum per year; 12 hour REI (2) ULV 0.9375 lb ai/acre maximum single rate , two applications maximum per year; 12 hour REI I will need your feedback within in two weeks if at all possible (Wed. October 11). Thank you! Teung Chin --------------------------------------------------------------------------------------------------------------------------- Oregon Crop Profile 1999 malathion 1.0-3.0 pt/acre 35 ACRES 1 % ct Douglas-fir conifer aphids (Cinara spp.) ; True Firs: Balsam Twig Aphid Arthur Antonelli Washington State University Puyallup Research and Extension Center 7612 E. Pioneer Way Puyallup, WA 98371-4998 Phone (253) 445-4545 Fax (253) 445-4569 Internet: --------------------------------------------------------------------------------------- Washington State Crop Profile Crop Profile 1999 no use reported (1999) Entomology Arthur Antonelli Washington State University Puyallup Research and Extension Center 7612 E. Pioneer Way Puyallup, WA 98371-4998 Phone (253) 445-4545 Fax (253) 445-4569 Internet: ------------------------------------------------------------------------------ Pennsylvania 2004 Crop Profile No malathion use reported ------------------------------------------------------------------------------------- North Carolina 2003 (Mountain Region) Crop Profile Malathion (malathion). 1% percent or less of Christmas tree acreage in 2000 in western North Carolina mainly for the control of the balsam woolly adelgid. Jill R. Sidebottom Mountain Conifer IPM Extension Specialist Mountain Horticultural Research and Extension Center North Carolina State University, 455 Research Drive, Fletcher, NC 28732-9244 E-mail: Telephone: (828) 684-3562; Fax: (828) 684-8715. ------------------------------------------------------------------------------------------- North Carolina (Piedmont & Coastal Plains) 1999 Crop Profile Pales weevils malathion 2% CT Jill R. Sidebottom E-mail: Telephone: (828) 684-3562; Fax: (828) 684-8715 --------------------------------------------------------------------------------------------------- North Carolina, West Virginia, Tennessee 2003 PMPSP 1% CT or less for balsam twig aphis and spruce spider mite in Western NC Also controls bagworms, aphids, eastern spruce gall adelgid, pine bark adelgid, pine root collar weevil, white pine wevil, Pales weevil, red headed pine sawfly, black headed pine sawfly Jill Sidebottom ------------------------------------------------------------------------------------------- Michigan PMSP 2001 5% CT blue spruce pine tortoise scale, aphids Richard Ledebuhr Norm Myers Melvin Koelling Jill O'Donnell Deborah McCullough Please do not hesitate to contact me if you have any questions or comments. Best regards, Teung ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Teung F. Chin, Ph.D. Biological Scientist Office of Pest Management Policy Agricultural Research Service United States Department of Agriculture LOCATED AT: USDA Animal & Plant Health Inspection Service 4700 River Road, Unit 149 (Room 3D-06.8) Riverdale, MD 20737-1237 Phone (301) 734-8943 Fax (301) 734-5992

Responder: Paul Guillebeau
State: GA
Date Requested: Oct 02, 2006
Response: From Dr. Will Hudson, our specialist in this area. "I don't think it really matters to our Xmas tree growers. Those that still use malathion would just have to move to a newer, more effective, alternative."

Responder: Frank Hale
State: TN
Date Requested: Oct 03, 2006
Response: Malathion is not heavily used in Tennessee Christmas tree production and we have alternative insecticides available for control of aphids and other common pests. The rates and number of applications per year recommended for malathion use on Christmas trees by the EPA is acceptable.

Responder: Holly Gatton
State: VA
Date Requested: Oct 09, 2006
Response: The 2006 VA Pest Management Guide recommends malathion for the control of spruce gall adelgids, aphids (white pine aphid, spotted pine aphid, balsam twig aphid, spruce aphid), bagworms, pine needle scales, and spittle bugs. We conducted an email survey of Christmas tree growers, insect specialists, and Extension agents to obtain their feedback on the proposed label changes for malathion. Most of the growers that responded do not use malathion on their farms and had no opinion on the new labeling, although one indicated he would like to have it available should he wish to use it in the future. Of those who do use malathion, two growers use it only sparingly and would like to make sure it remains labeled. The final malathion user was very displeased with the label restrictions because “sometimes in the Tidewater area, which is plagued with pests that love our humidity, we must do two applications back-to-back in the spring, and restricting to two applications per year would limit our options for late season infestation of a new pest.” Finally, two of our Christmas tree insect specialists weighed in and said the new labeling restrictions are reasonable and should “have a very limited impact.”
Holly A. Gatton
Project Manager
Virginia Tech Pesticide Programs
Department of Entomology
34 Agnew Hall, MC 0409
Blackburg, VA 24061
Phone: 540-231-6543
Fax: 540-231-3057

Responder: Mark Mossler
State: FL
Date Requested: Oct 10, 2006
Response: Respondents from the Florida X-mas Assoc. have indicated that the limitations are not problematic as use ranges from none to once a year.

Responder: Rocky Clements
State: AR
Date Requested: Oct 12, 2006
Response: That is an acceptable application for most uses of Malathion in Arkansas. It has normally been used as a one time clean up spray the week before marketing. Occasionally used during the summer for bagworms and other general pest control.

Responder: Bob Belllinger
State: SC
Date Requested: Jan 12, 2007
Response: I never received any responses on my query to this request. Bob Bellinger

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