By Mark Loux, Ohio State University Extension herbicide specialist
This is the time of year when we received our first call about dicamba problems in soybeans in 2017. We can probably expect any problems to become evident soon, based on the timing of postemergence applications and timeline for development of symptoms.
Off-target issues have already developed in states farther west and south, and we would expect at least some to occur here, unless we’re really lucky. The symptoms of dicamba injury show in new soybean growth within approximately 7 to 21 days after exposure, and most of our soybeans receive postemergence applications from early June on.
It’s been a challenging year to properly steward postemergence applications. We still face some challenges in finding appropriate weather to catch weeds before they become too large, and before soybeans are too advanced in growth stage. There are a number of weather, application and adjacent crop factors to consider when applying dicamba, and applicators should review labels as frequently as needed to ensure legal application.… Continue readingRead More »