The pH of both soil and the spray tank solution can have varying effects on whether dicamba volatizes and moves off target. Plenty of questions remain and pH is far from the only factor. But researchers are pinning down more about its influence.
In the past, states have been able to pass more restrictive state regs on federal pesticide labels. That practice may no longer be routine, because EPA is worried that the legal language does not actually support it, state pesticide regulators say. So-called "local needs" label additions could face delays.
Here's a quick holistic guide to ridding combines of weed seeds, among other things. It's a front-to-rear and top-to-bottom approach that can start in the field when the last of the crop has been harvested. The guide was jointly developed by university personnel from Iowa, Nebraska, South Dakota and Wisconsin.
The way Palmer amaranth reached each county was different, North Dakota State University Extension sugar beet agronomist Tom Peters says. The likely sources were seeds carried by migratory birds, a used combine, an alternative feed source purchased out of state, custom combining and grain cleaned out of railroad cars.
Much of what you've learned about how to apply dicamba on tolerant crops has mostly changed with this most recent EPA revision. That includes spray timing, the number of allowed applications, who can spray, buffers and just about anything else you've already learned. Here's a breakdown on changes and more details than might have been initially available when the 2019 changes were announced.
Click on the map to access contact information for Nufarm's field staff.
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