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EPA approves updated label for Bayer CropScience herbicide

Agriculture.com Staff 05/14/2007 @ 2:02pm

The U.S. Environmental Protection Agency has granted Bayer CropScience an updated label for Autumn herbicide, according to a company report. Growers can now apply Autumn 30 days before planting corn or 90 days prior to planting soybeans. In addition, Autumn may be used as a burndown treatment after harvest.

University field-trial results show that Autumn delivers outstanding results on tough weeds, including Canada thistle, common chickweed, dandelion, hemp nettle, henbit, horsenettle and marestail.

Bill Johnson, associate professor of weed science at Purdue University, says weed species like cress leaf groundsel, chickweed, henbit and purple deadnettle can be treated in late fall when growers may have more time to use control measures. He says that such weeds, if not addressed by early spring, can become less responsive to herbicides once they start to bloom and grow.

Fall burndown treatments to control weeds offer a side benefit: They also help minimize weed cover for overwintering pests such as black cutworms.

"With the limited snow cover in the Eastern corn belt last winter, black cutworm moths migrated earlier, then laid their eggs in green weed tissue where there is usually snow," says Brent Philbrook, product development manager for Bayer CropScience. "As a result, cutworm larvae thrived. A burndown application of Autumn could have prevented these problems."

The U.S. Environmental Protection Agency has granted Bayer CropScience an updated label for Autumn herbicide, according to a company report. Growers can now apply Autumn 30 days before planting corn or 90 days prior to planting soybeans. In addition, Autumn may be used as a burndown treatment after harvest.

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