It pays to know your enemy. The advice applies to problem weeds that growers see in their fields at harvest. The species that posed problems in 2016 are most likely the ones they’ll need to control in 2017.
Retailers can help growers develop sound weed management programs to handle the tough weeds they’ll need to address in each field.
“Lots of growers do a good job taking note of what they see before and during harvest,” says David Hillger, Ph.D., Enlist™ field specialist. “In addition to identifying the weeds they usually battle, they need to keep an eye out for new species.”
Some growers in Hillger’s area are starting to see Palmer amaranth. This tough-to-control weed can produce hundreds of thousands of seeds per plant, especially if growers let it survive until harvest.
Building a better weed trap
Hillger suggests identifying the problem weeds and coming up with a program that will lessen their impact next year. Adjusting a preemergence and residual program can help growers keep pressure on some of these recently arriving species.
“Examine the residual program,” he says. “It may be valuable to consider fall-applied options. Some growers have had success controlling marestail this way. Fall application also can reduce dependence on spring applications, which may be at the mercy of the weather.”
In some cases, it may pay to switch the crop itself. For instance, planting corn may allow growers to tap additional herbicide options to provide stout residual control. The ability to use Enlist Duo® herbicide postemergence on Enlist™ corn and soybeans — along with other modes of action preemergence — can broaden control for many difficult weed species.
Scout, plan, act
Scouting can pay big dividends, but only if growers follow up with changes in their weed management to target weeds that are escaping under their current program. Hillger suggests growers take advantage of different modes of action to manage the weeds that are causing the greatest threat to yield.
To learn how the Enlist™ weed control system can help, contact an Enlist field specialist or a Dow AgroSciences sales representative. Visit Enlist.com to learn more about Enlist™ technology, including Enlist traits and Enlist Duo® herbicide with Colex-D® technology. You also can visit our YouTube channel or follow us on Twitter at @EnlistOnline.