Tuesday, January 31, 2023

WEED CONTROL – Learn From 2012

March2013ssThe 2012 growing season was one of extremes in many areas. Too little rain was received during critical crop phases in many areas, while some pockets had heavy, unpredictable rains and wind damage.

In 2012, growers who planned ahead and built flexibility into their programs were rewarded with the best return on their herbicide investments. This proved true with both post-harvest weed control programs the previous fall and early preemergence herbicide treatments in the spring.

Lingering dry conditions in late 2012 could create herbicide carryover issues that affect crop rotation plans for the following season. To avoid possible early season crop damage from soil herbicide residues, carefully check herbicide labels for any rotation restrictions and closely follow manufacturer recommendations.

Apply preemergence herbicides early

While weather conditions for this spring remain to be seen, an important lesson can be learned from last spring: Don’t wait until planting to apply preemergence herbicide. Some growers who delayed 2012 preemergence weed control applications until planters were rolling never saw the rainfall needed to activate herbicides before crop emergence. The result was poor early season weed management and reduced benefits from herbicide investments.

“Early spring herbicide applications provide multiple benefits,” notes Helen Flanigan, product development manager with DuPont Crop Protection. “Growers can make use of early spring rains to activate herbicides for maximum weed control, and they have a larger window of application.”

Timely applications of a preemergence herbicide with burndown and residual activity will help provide cleaner, drier seedbeds at planting so crops get off to a vigorous start. Herbicides that fit that category include LeadOff herbicide, which can be applied 30 days before planting cotton and soybeans or immediately before planting corn. Soybean growers can use Envive herbicide as an effective preemergence option.

For more information about weed control, visit cropprotection.dupont.com.

Information for this article was provided by DuPont Crop Protection.

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