Proper use of new herbicide-tolerant systems
With herbicides that have been on the market for decades, it wouldn’t normally be expected that new stewardship programs for their use would be necessary, especially if the herbicide formulations have been improved.
But 2013 is expected to be the beginning of a new era in the use of two herbicide active ingredients—dicamba and 2,4-D. Both of these herbicides have been reformulated for less volatility and physical drift in application for use in conjunction with glyphosate herbicide.
BASF Corporation has its new dicamba formulation branded Engenia. Upon EPA registration review, it will be labeled for use postemerge over Monsanto-developed crops resistant to glyphosate and dicamba as part of the Monsanto Xtend Crop System weed control program, also under EPA review.
Dow AgroSciences has its Enlist Duo herbicide with Colex-D technology. Enlist Duo is a proprietary blend of new 2,4-D choline and glyphosate; upon EPA registration, this herbicide combination will be part of the Enlist Weed Control System that is based on crops having traits tolerant to glyphosate, 2-4-D and, in corn, aryloxyphenoxypropionate, “fop,” active ingredient grass herbicides.
Both BASF and Dow AgroSciences have initiated programs that stress stewardship, best management practices and management resources pointed toward the distribution channel, ag retailers and growers.
In talking about these goals, spokesmen for both companies explained that it seemed necessary for farmers and applicators to be educated about application since it has been a long time since either of these active ingredients have been widely used in row-crop production. But just as important to both companies is education on how to use the products in an effective and sustainable weed management system minimizing any weed resistance potential—another part of stewardship.
ENLIST AHEAD RESOURCES
All the goals of stewardship and management resources are being rolled under the Enlist Ahead resource management program for Enlist Duo herbicide and Enlist Weed Control System, explained Damon Palmer, lead for introduction of the system.
“One thing that was determined early is that we wanted to bring forward a program, and that is why we’ve positioned Enlist Ahead, from farmgate to retailer, as a management resource,” Palmer said. “We do have the management recommendations that go along with using the chemistry properly to minimize off-target movement, but there also is the management focus on key agronomic things such as using multiple modes of action to control weed resistance.”
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