Home Farm Equipment Have Waterhemp? Is it herbicide resistant?

Have Waterhemp? Is it herbicide resistant?


A crew led by Mark Loux from Ohio State College has been screening a random pattern of waterhemp populations for herbicide resistance over the previous two years. Herbicides used within the display screen embody mesotrione, atrazine, 2,4-D, fomesafen, and metolachlor. Outcomes of our analysis present that it’s potential for Ohio waterhemp populations to have some stage of resistance to 1, a number of, or all of those herbicides.

 Glyphosate is just not included as a result of we assume virtually all populations are already proof against this. We’re additionally a part of a regional venture that has been screening for dicamba and glufosinate resistance with populations that we provide, though none has been recognized up to now. 

The pattern measurement has been small to date, so at this level we wish to develop our screening to incorporate waterhemp populations submitted by anybody in Ohio on the lookout for extra details about their response to herbicides.  It’s preferable to have seed from waterhemp vegetation which have survived POST herbicide remedies, or the place it seems that preemergence herbicides had been pretty ineffective, if potential. However we are going to display screen any populations offered throughout the constraints of time and greenhouse area. For a fast reminder about how one can inform when seed from waterhemp is mature, take a look at this video. When seed is mature, you possibly can reduce off seedheads and place in an open paper bag till able to get them to us.  Or simply shake heads into some kind of container to gather seed.  Ship us an e mail and we are going to work out one of the best ways to get seed to us, or in the event you want extra info.  [email protected]

Additionally – a reminder that whereas we wish to have seed from surviving waterhemp vegetation, the simplest methodology of stopping future issues with this weed is to not let any go to seed. Not solely as a result of vegetation that survive might have resistance, however as a result of they produce gobs of seed that may lead to distress the next yr. Elimination of those vegetation ought to have excessive precedence proper now.  Nonetheless, the place it’s obvious that this isn’t going to occur for no matter motive, make an observation of the infested fields, and examine on them beginning in a pair weeks for seed.  This could assist us to get a greater deal with on how resistance in waterhemp is evolving. 

Supply: Ohio State Collegewhich is solely accountable for the knowledge offered and is wholly owned by the supply. Informa Enterprise Media and all its subsidiaries are usually not accountable for any of the content material contained on this info asset. 


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