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Serving: IN

Help for Those Replanting into Roundup Ready Corn

State Chemist acts to help farmers with replanting dilemma.

Bob Waltz took advantage of his authority as Indiana State Chemist and issued an emergency exemption for a herbicide that could help farmers caught in a crisis situation. Waltz granted a crisis exemption for the use of Select-Max herbicide to control glyphosate-resistant corn.

Heavy rains in parts of northern Indiana, dry areas in other parts and very dry conditions in eastern Indiana have left some farmers who planted earlier with less than ideal stands. In fact, some report poor stands, and want to try again since it’s still early in the season.

The fly in the ointment for those who planted Roundup Ready corn and now want to replant is an inability to bring that corn down with an inexpensive product. Obviously, glyphosate won’t control it. Left to grow on its own in a replant situations, some areas of the field could be too thick and wind up lowering yields.

Bill Johnson, Purdue University weed control specialist, announced Friday, may 11 that Waltz had issued the exemption. Her estimated that on that date, about 3,000 to 4,000 acres were likely in need of replanting. That figure could grow. Tippecanoe Extension ag educator Jeff Phillips received calls in the May 9-11 time frame from farmers worried about their stand of corn. Dry conditions that didn’t provide enough moisture for germination were apparently the culprit in the Tippecanoe County area. Reportedly, some farmers were already resorting to rotary hoes to attempt to loosen soils and bring corn through the ground.

Select-Max is made and sold by Valent USA. According to the label, apply Select-Max at four ounces per acre as a burndown ahead of replanting corn, Johnson advises.

State regulatory agencies are allowed to make emergency determinations and allow use of products not yet registered for the use in question under the terms of the Federal Insecticide, Fungicide and Rodentcide Act. Such exemptions are usually referred to as Section 18 allowed uses. They are issued typically for a specific product for use on a specific crop over a specific time period. It is not a replacement for full labeling.

The Section 18 clause is usually invoked if there is no other effective, economical option available, but yet another product is available. That was the case in Waltz issuing this exemption this week.

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