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Waterhemp –
Time to take Action
Sam Custer, OSU Extension, Darke County
OSU Extension, Darke County will hold a very important meeting
regarding the infestation of waterhemp in Darke
County. The meeting will take place at the Anderson
Marathon Ethanol plant on Tuesday, February 7 at 6:00 p.m. Dr.
Mark Loux and Dr. Jeff Stachler will discuss the situation we are in,
identification, biology and strategies for control.
This meeting will be critical to your success in trying to control this
very aggressive weed. Call the extension office at 937.548.5215
today to reserve your seat or download a flyer at the darke.osu.edu
website.
I completed the Fall Soybean Weed Survey in Darke County with the
assistance of Weed Scientist, Dr. Jeff Stachler, Darke County native
and Auglaize County Extension Educator. The good news is that we have
several parts of the county where growers are managing their resistant
weed problems. The assumption is that most of Ohio soybeans are
RoundupReady, and that if weeds are still in the soybean field at the
end of the season, then there must have been a failure of the system –
not always correct but then we are making assumptions that may not be
too far off.
We drove an 89 mile loop and evaluated 91 soybean fields for all weed
species, because of the concern for resistant waterhemp showing up in
Western Ohio we looked at all 309 fields in the loop to determine if
there was waterhemp in the field.
We found only 12% of the 91 fields completely void of weeds and
volunteer corn compared to about 40% the previous two years. An
occasional weed or corn plant could be found in another 15% of the
fields.
WATERHEMP. Not much different than the dreaded Palmer Amaranth,
is a severe problem. We found waterhemp in 66 of the 309 total fields
we drove by in the 89 mile loop. Our estimate is that 44% of the
fields in the north and western part of the county are infested.
For more information about OSU Extension, Darke County, visit the Darke
County OSU Extension web site at www.darke.osu.edu, the OSU Extension
Darke County Facebook page or contact Sam Custer, at 937.548.5215.
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