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Imprelis Update & 25th Annual Summer Field Day

13 Jul 2011 6:00 AM | IPLLA Admin (Administrator)



25th Annual Field Day
August 25th, 2011  LEARN MORE...

Office of the Indiana State Chemist

Purdue Plant & Pest Diagnostic Laboratory

For additional information on herbicide injury to plants see
Diagnosing Herbicide Injury on Garden and Landscape Plants, ID-184-W.

Purdue Agronomy Turf Tips:


IPLLA News Online


To:  All IPLLA Members

From:  Bob Andrews

Subjects:     Imprelis Update
                  Field Day Registration

We have been doing our best to keep every member up-to-date on the unfolding story surrounding the DuPont herbicide Imprelis and its apparent impact on White Pines and varieties of Spruce Trees in Indiana and other states.  Here is some current information.

While there are differing opinions, most experts agree that affected trees should not be cut down or immediately trimmed back.  Fertilization of affected trees should not be done now as no one is sure how fertilization would encourage further root uptake of the herbicide.  However, fall fertilization should definitely be considered as a part of any treatment program.   Suspected damage should be immediately reported to the Office of Indiana State Chemist. As everyone involved hustles to cover their backsides, your records on suspected damage should be thorough and kept well documented.

I have also been asked whether or not we should continue to use Imprelis on wide open properties like athletic fields or on lawns with hard to control weeds such as Wild Violet.  While I can’t answer that question for you, our firm has decided to cease any use whatsoever of Imprelis until this matter is satisfied to our satisfaction.  I cannot stress enough that we are in new territory here.  The more experts I talk to, the clearer it becomes that there is no clarity!  Simply put, no one really knows what happened here, why it happened, and what is the potential recovery for the trees affected? 

One thing is clear. Whether you used Imprelis or not, the progression of this story will be one of the great learning experiences for all of us involved in any way in the turf industry.  At present, that learning curve is pretty steep.

Field Day Registration

Registration information for the August 25th Field Day is now posted on line at IPLLA.COM and informational booklets were mailed on July 5th.  Once you see the entire educational program, I hope you will find something of interest for everyone involved in your operation.  As IPLLA grows, we certainly understand our responsibility to bring you the very best and very latest in green industry education.  Plan on joining us for the 25th Annual Field Day.  I’ll look forward to seeing you.



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