More in Micronutrients

The ongoing evolution of herbicide-resistant weeds is a source of worry in Illinois, says University of Illinois (U of I) Professor of Molecular Weed Science Patrick Tranel. He and research assistant Nick Hausman will be making a presentation on this topic during the 56th annual Agronomy Day at the U of I on Aug. 16....More

The eastern Corn Belt's early corn crop has started to – and so have the weeds. So now is the time for growers to consider postemergence herbicide applications, says Travis Legleiter, a Purdue Extension weed specialist. In the northern part of the Corn Belt, some of the crop is as far along as the V3, or third leaf, growth stage. Development is even further along in some fields in the southern part of the region. That means corn farmers need to prepare to apply the right postemergence herbicide at the right time, likely within the next few weeks....More

It’s been another abnormal spring and many farmers have had to adjust some of their management practices. Specifically, the combination of the unusual weather and a need to get control of glyphosate-resistant weeds has increased the need to more closely scrutinize weed-management programs....More

"In general, postemergent applications should be made before weeds get taller than 2-4 in., because that's when competition can begin to impact yields," says WinField Regional Agronomist Steve Barnhart. "Plus small weeds are a lot easier to control than larger ones." Because every field is different, there isn't a one-size-fits-all approach to turn to when it comes to planning postemergent herbicide applications....More

University of Illinois associate professor of weed science Aaron Hager says that the below-freezing temperatures last week damaged some emerged corn in some parts of Illinois. “While the damage appears not to be widespread, it is very likely that some growers will opt to replant damaged stands,” he says. Losses of the initial corn stand could range from complete to partial, so farmers may need to control existing corn plants before replanting....More

As you ready for spring planting and spraying, add a new tool to your arsenal: a tankmix app to help manage mix formulas and record what's going on which field and when. Precision Laboratories has launched Mix Tank 2.0, a "complete spray management tool," says Rick Wohlner, president of the company. "We launched 1.0 a year ago and have had over 7,000 downloads. The new version is simple, fast and it works."...More

A new online application developed and launched by Spensa Technologies Inc. will help growers and pesticide consultants electronically track the number of insects in their crop fields so they can better control crop damage caused by insects and improve the use of insecticides....More

On Oct. 31, 2011, a new federal regulation requiring a permit for certain pesticide applications went into effect. Why should you care? Because it applies to anyone who might spray chemicals, according to Extension Educators David Robson and Michelle Wiesbrook of University of Illinois Extension's Pesticide Safety Education Program (PSEP)....More

Ohio State University research on marestail management has shown that a systems approach, involving a combination of herbicide applications, provides the most consistently effective control and reduction in marestail population over time. Given that essentially all of the marestail populations in the state are glyphosate-resistant by now, and something like 25% of these are also resistant to ALS inhibitors (Classic, FirstRate), POST applications are often the least important application in a marestail control program....More