As many speakers over the past few months have rightly pointed out, dicamba has been used within the agricultural marketplace to control weeds for several decades now. “The difference today is that we are applying it at times of the year when it was never applied before,” say most. “And that’s become the problem.”

 

In many cases during 2017, custom applicators working with dicamba products on dicamba-resistant crops ran into problems with off-target movement caused by a number of factors, according to experts. In particular, said Dr. Mark Hanna, a trainer for BASF, a big part of the problem is the fact that it takes very little dicamba accidentally left in a self-propelled sprayer to cause unwanted crop damage.

 

“It takes 3 milliliters of dicamba to contaminate a 1,000-gallon solution tank,” said Hanna, speaking at the 2018 Ohio AgriBusiness Association (OABA) meeting in February. “That’s essentially the same amount of liquid you would find in a syringe.”

 

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