About two years. That’s all the time you have to prove to the Environmental Protection Agency (EPA) you and your neighbors will follow new dicamba formulation label requirements, or the agency could let its approval expire at the end of 2018. “With the possibility of spraying in June and July on lots of additional acres, remember broadleaf plants are very, very sensitive to dicamba,” says Mandy Bish, senior research specialist at the University of Missouri’s weed science program. “It only takes a small amount to injure nontarget plants.
In the past few years, Palmer amaranth has snuck into Illinois, Indiana, Iowa, Minnesota and Ohio fields in an unexpected way: through CRP and native plantings. To prevent the weed from getting into the professional seed supply, researchers created a DNA test to identify the seed before it reaches the farm.
Research confirms paths of drift mitigation
Bigger isn’t better, but in this case it’s a whole lot safer. As the spray application industry trends to coarser droplets that offer less coverage but mitigate drift, new field data offers valuable insights into the efficacy of spray tips and hoods. The trial results are particularly timely with three new dicamba herbicides available this year: Engenia, FeXapan and XtendiMax.
By Linda Geist, University of Missouri Extension
Atrazine, one of farmers' least expensive and most effective chemicals for weed control, is under the magnifying glass.
Atrazine is up for re-registration review by the Environmental Protection Agency, says Bob Broz, water quality specialist for University of Missouri Extension. Broz recently spoke to certified crop advisers at a meeting in St. Joseph.
To date, several dozen states have the green light from the Environmental Protection Agency (EPA) for use of the new dicamba formulations, BASF Engenia and Monsanto XtendiMax with VaporGrip Technology. Monsanto has also licensed its product to DuPont, which is marketing it as FeXapan with VaporGrip.
Now is the time to get a leg-up on weeds. This means strategically planing your control measures with best management practices to outsmart resistant weeds.
Weeds steal around $4 billion from farmers each year. Management costs are one of your biggest variable expenses, so it pays to be smart. Learn to differentiate myth and fact on weeds and herbicides.
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