Promising lab results by researchers at Washington State University and the U.S. Department of Agriculture's Agricultural Research Service show the herbicide glyphosate has activity in suppressing Asian soybean rust.

WSU has applied for U.S. and international patent protection, which will be published soon. WSU, through its Washington State Research Foundation, intends to license this intellectual property broadly. The foundation already has reached a preliminary agreement with Monsanto Co., the producer of glyphosate-based Roundup agricultural herbicides.

The research was funded by a USDA Biotechnology Risk Assessment Grant and WSU.

Jerry Hjelle, vice president for Monsanto Worldwide Regulatory Affairs, cautioned that the data is preliminary.

"We will be carefully analyzing the research from WSU and gathering further information to determine product efficacy and use on Roundup Ready soybeans," said Hjelle. "At this time, we strongly recommend soybean producers use fungicides labeled for treatment of Asian soybean rust."

Glyphosate herbicides are not currently registered or labeled to protect against or control Asian soybean rust and existing residue tolerances may not be adequate for this potential use. It is a violation of federal law to use a glyphosate pesticide in a manner inconsistent with its labeling.

Source: University Release