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Imprelis Herbicide (a.i. aminocyclopyrachlor) Damage ALERT!!

We’re receiving reports of damage with the broadleaf herbicide Imprelis (a.i. aminocyclopyrachlor) to Norway Spruce and White Pine in Michigan and have this important information to pass on to you.

If you are a commercial applicator that has applied this product and are receiving complaints from customers that have trees showing adverse effects, we are recommending the following actions:

1)    You should get an “official” report on the damaged trees. We’ve been in contact with Michigan Department of Agriculture and Rural Development (MDARD) and they are interested in following up on reports of adverse effects. They will come out to the location of the application and make an official report of the damage. IT IS IMPORTANT TO NOTE that they will be checking to make sure that the herbicide was applied in a legal application and will be checking your records. It is imperative that your application was accurate and that your records are in order according to Public Act 451, Regulation No. 636. Pesticide Applicators (found at http://www.state.mi.us/orr/emi/admincode.asp?AdminCode=Single&Admin_Num=28500636001)  and Regulation No. 637. Pesticide Use (found at http://www.state.mi.us/orr/emi/admincode.asp?AdminCode=Single&Admin_Num=28500637001)! 
a.    To get an official report from the MDARD you can either contact the MNLA office (Amy Frankmann) at 800-879-6652/email at:  amyf@mnla.org  OR contact the MDARD directly by contacting Brian Rowe at (517) 373-4905/email at: roweb@michigan.gov.
2)    You should report the adverse effects directly to Dupont by contacting Adam Neate, Dupont Sales Rep for the State of Michigan, at (216) 570-6305.

For all MNLA members receiving inquiries from customers about this product and to learn more, Michigan State University Extension has published two articles on the subject:
“Imprelis Herbicide May Injure Evergreens” by Dr. Kevin Frank (CLICK HERE TO READ THIS ARTICLE)

 “What to Do with Imprelis-affected Trees” by Dr. Bert Cregg (CLICK HERE TO READ THIS ARTICLE)