Plant first, spray later still allows weed control

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Plant first, spray later. Growers tend to rely on this routine when untimely rain makes it difficult to plant on schedule. And when weather delays planting, growers don’t have time for a preemergence herbicide application, which can put yield at risk.

During wet springs, like the ones growers have experienced this year and last season, spraying flexibility is even more important to growers, said Brittany Loewen, corn herbicides product manager at Dow AgroSciences.

“When there’s wet weather early in the planting season, a grower’s first priority is to get corn in the ground and spray later,” Loewen said.

Ag retailers need to think about their recommendations to help their customers as the weather causes problems each and every year.

Mother Nature runs on her own schedule, and so do weeds. Early season weed competition can significantly reduce yield by robbing developing corn plants of sun, water and nutrients. And once yield is diminished, it’s not coming back.

“Today, some of the toughest weeds are able to survive glyphosate-only applications, including giant ragweed, waterhemp and marestail,” Loewen said. “Without the use of a residual herbicide before a glyphosate application, these weeds have a head start on reducing yield potential.”

Loewen recommends a two-pass weed control program containing a residual herbicide with multiple modes of action, such as SureStart herbicide, which is proven to stop weeds more effectively than glyphosate alone.

Helping customers overcome weather delays by recommending a herbicide with broad-spectrum control of weeds and flexible application timing is a must by ag retailers.

This year wasn’t the first time weather delayed corn planting, and it won’t be the last. For more information you can visit

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