Use of Dimethoate on Celery, Cauliflower, and Brussels Sprouts in California
Date: February 2, 2006
To: Belinda
Platts, Lori
Berger
Cc: Rick Melnicoe,
Linda Herbst
From: Teung
Chin
Subject: Dimethoate Use on Celery, Cauliflower, and Brussels Sprouts
Belinda and Lori;
Per my voice messages today.
Cheminova and EPA are involved in preliminary risk mitigation discussions
for dimethoate. Three row crops in California are of particular interest:
Refinements must be made to lower drinking water risk numbers. Cheminova
has asked me to contact growers directly. We need your feedback in 4
days, hopefully.
(1) Celery - 6 to 7 applications; 0.5 lb ai/acre, aerial applications
- Can growers live without aerial applications?
- Can growers live with a less than the 0.5 lb ai/acre maximum application
rate? If so, at what application rate?
- Do growers apply Dimethoate on cauliflower in the cold, wet rainy winter
season?
- Is the celery being grown away from the coast area of California ?
(Inland provides better drinking water numbers because a different model
will be used)
(2) Cauliflower - 6 to 7 applications; 0.5 lb ai/acre, aerial applications
- Can growers live without aerial applications?
- Can growers live with a less than the 0.5 lb ai/acre maximum application
rate? If so, at what application rate?
- Do growers apply Dimethoate on cauliflower in the cold, wet rainy winter
season?
- Is the celery being grown away from the coast area of California ?
(Inland provides better drinking water numbers because a different model
will be used)
(3) Brussels sprouts - 6 applications, 1 lb ai/acre, aerial applications.
- Can growers live without aerial applications?
- Can growers live with a 0.5 lb ai/acre maximum application rate?
- Do growers apply Dimethoate on Brussels sprouts in the cold, wet rainy
winter season?
- Is the celery being grown away from the coast area of California ?
(Inland provides better drinking water numbers because a different model
will be used)
If you'd rather I confer with another expert, please let me know who.
Many thanks!
Teung
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
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