Soybeans grow in Iowa field

(Photo: Iowa Soybean Association / File Photo)

Soybean Farmers Applaud Court Decision on Glyphosate Labeling

November 9, 2023 | Brock Johnston

Ankeny, Iowa – The Iowa Soybean Association (ISA) today applauds a Ninth Circuit Court of Appeals decision to remove California label requirements for glyphosate, a crop protection tool used by farmers to mitigate a broad spectrum of weeds that otherwise pose risk to yield. The warning, mandated by the state’s Proposition 65, had previously required products containing glyphosate to indicate potential harm as a human carcinogen. 

ISA, alongside 11 agriculture groups, have challenged the California labeling requirement since 2017. The Environmental Protection Agency has repeatedly concluded that glyphosate is not likely to cause cancer in humans. 

“We are pleased to see this action taken by the court, as it upholds scientific findings on the safety of glyphosate and eliminates the requirement for a false or misleading label that threatened the product’s use in agriculture,” said Kirk Leeds, ISA CEO.

Glyphosate was first registered for use in the U.S. in 1974. Today, it is one of the most widely used herbicides in the United States, approved for application in more than 250 crops throughout the U.S.

In addition to ISA, plaintiffs in the case include the Agribusiness Association of Iowa, the Agricultural Retailers Association, Associated Industries of Missouri, Missouri Chamber of Commerce and Industry, CropLife America, Missouri Farm Bureau, National Corn Growers Association, National Wheat Growers Association, North Dakota Grain Growers Association, South Dakota Agri-Business Association and United States Durum Growers Association.


Not funded by the soybean checkoff

The Iowa Soybean Association ( is “Driven To Deliver” increased soybean demand through market development and new uses, farmer-focused research and results, timely information and know-how and policy initiatives enabling farmers and the industry to flourish. Founded in 1964 by farmers to serve farmers, ISA is governed by a board of 22 farmers to advocate on behalf of the state’s 40,000 soybean producers, including more than 15,000 ISA farmer members and industry stakeholders.