When it comes to Enlist Duo, it’s all about drift — and a lack thereof. Dow AgroSciences is seeing less off-target movement than ever with its herbicide made from glyphosate and 2,4-D choline.
“We can take what’s known as a low-drift nozzle and show 90% reduction in actual drift,” says Brandon Downer, lead formulation application specialist at Dow AgroSciences.
In fact, the company’s Enlist Duo label does not have a required buffer next to non-Enlist corn or soybean fields. A minimal buffer of 30 feet downwind is included for sensitive areas.
Focusing on droplet size and staying aware that smaller droplets drift more easily, Dow AgroSciences now has 23 different sprayer nozzle recommendations it has tested to ensure droplet size is above the risky 150-micron size.
As of now, Monsanto’s proposed label for the M1691 herbicide on Roundup Xtend soybeans only has one nozzle recommendation, comparatively.
In a test plot planted by Dow AgroSciences, the company planted tomato plants directly beside Enlist soybeans and then sprayed the beans with Enlist Duo when the wind was blowing about 7 to 9 mph away from the tomato plants. The tomato plants were not injured by the application that was done with an Enlist Duo-approved sprayer nozzle with a tractor speed of 6 mph.
There’s no question that Enlist Duo will kill soybeans that are not Enlist, which was made clear by a different test plot in which a few soybean rows were sprayed directly with the herbicide.
On average, sprayer booms should be positioned 24 inches above the ground; pressure rates are listed on the label. Enlist Duo has 49 different tank-mix options as of now.
The standard, pungent 2,4-D smell many growers are accustomed to is not an issue with Enlist Duo. The reduced odor herbicide also only requires one tank rinse with regular water when moving back into glyphosate-resistant corn. When moving on to different crops, growers should rinse the tank with water three times.
Enlist Duo herbicide for corn and soybeans is currently approved for use in 15 states, and the company expects to have everything in line for a full commercialization of Enlist corn in 2017, pending import approvals. The company is confident that Enlist soybeans will also be ready to launch as early as 2017, pending import approvals.
The company is expecting to get China’s approval since it has completed what was needed for approval. As for the European Union (EU), Dow AgroSciences expected to receive the EU’s review and technical opinion within a few months, but the recent Brexit controversy may push back that timeliness.
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