Aerial application of herbicide for corn

Another news release from the North Dakota Ag Department:

Agriculture Commissioner Doug Goehring has issued a Section 24(c) Special Local Needs registration to Syngenta Crop Protection, allowing aerial application of Callisto™ herbicide on corn.

“Heavy rainfall this spring has made it difficult or impossible for ground pesticide application equipment to be used in many areas, forcing growers to rely on aerial applications of pesticides,” Goehring said in a statement.

Goehring said the situation also forces growers to turn to auxinic herbicides, such as 2,4-D and dicamba, for postemergence broadleaf weed control.

“These herbicides are relatively effective on broadleaf weeds like kochia, lambsquarters, wild mustard, and ragweed, but they tend to drift off-site, damaging crops, trees and environmentally sensitive areas,” he said. “Since they use the same mode of action, there’s an increased risk of the weeds becoming resistant to them.”

The registration allows a single aerial application of Callisto to corn at a rate of 3 fluid ounces per acre. Applications may only be made when the wind speed is less than 10 miles per hour.

Applicators must follow directions, restrictions, worker protection standard requirements and precautions on the EPA-registered label and all use directions on the SLN label. They must also have the SLN label in their possession during application.

Goehring told the U.S. Environmental Protection Agency that he believes the situation meets EPA’s criteria for a special local need, since Callisto poses a lesser health and environmental risk, and provides a second mode of action as part of a resistance management plan.

The SLN registration expires Aug. 15.

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