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Sponsored: Monitor Wind, Weather to Make a Successful Herbicide Application

Follow product labels and check conditions to avoid off-target movement

It’s an ill wind that blows nobody any good. Farmers who apply herbicide are taking that saying to heart.

These days, knowing how the wind is blowing and adjusting your application activities are critical. Understanding product requirements and using a few tools can help you confidently keep your herbicide applications on target and effective.

“Always read product labels carefully and understand requirements before using any pesticide,” says Steve Snyder, herbicide trait field specialist. “You need to know what crops surround your fields and whether or not they’re susceptible to the products you apply.”

Applicators must understand wind directional buffers and downwind susceptible crops: If cotton without the Enlist™ trait is downwind, do not spray Enlist™ herbicides. No buffer distance is acceptable from adjacent downwind susceptible crops. Wait to spray an Enlist herbicide until the wind is blowing away from a susceptible crop.

Ideal conditions for applying Enlist Duo® and Enlist One™ herbicides include wind speeds of 3 to 10 mph, no higher than 15 mph. Check state regulations because there may be additional requirements. For example, the maximum wind speed for applying Enlist herbicides in Texas is 10 mph.

Monitoring the wind

Measure wind speed and monitor wind direction in the field before starting to spray. Continue monitoring throughout the application. Don’t spray unless wind speed and direction favor on-target application.

It’s also important to watch for temperature inversions. A temperature inversion occurs when a layer of warm air covers a layer of cooler air, effectively putting a lid on the surface-level air that prevents it from rising and mixing normally into the upper atmosphere. Gases trapped near the surface can’t mix and dissipate, so they hover near the ground and often drift sideways.

Very low winds (0 to 3 mph) and temperatures close to the overnight low favor the formation of a temperature inversion. Do not apply any pesticide during these conditions.

To learn more about the Enlist™ system, visit Find out what farmers are saying about this technology at Experiencing Enlist. Also check out our YouTube channel and follow us on Twitter at @EnlistOnline.

®™Colex-D, Enlist, Enlist Duo and Enlist One are trademarks of The Dow Chemical Company (“Dow”) or E. I. du Pont de Nemours and Company (“DuPont”) or affiliated companies of Dow or DuPont. Enlist Duo and Enlist One herbicides are not registered for sale or use in all states or counties. Contact your state pesticide regulatory agency to determine if a product is for sale or use in your area. Enlist Duo and Enlist One herbicides are the only 2,4-D products authorized for use in Enlist crops. Always read and follow label directions. ©2018 Dow AgroSciences LLC   

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