EPA's RFA Waiver Ruling Will Infuriate Corn Industry, USDA

Nov 29, 2018

The U.S. Environmental Protection Agency (EPA) has rejected requests from the corn lobby to reallocate biofuel volumes waived under its small refinery exemption program into its 2019 mandate, an agency official told Reuters on Tuesday.

The move is likely to infuriate the powerful corn lobby and top officials in the U.S. Department of Agriculture, who have complained for months that an expansion of the EPA's refinery waiver program under the Trump administration threatens demand for crucial farm products like corn-based ethanol.

Under the U.S. Renewable Fuel Standard, oil refiners must blend increasing amounts of biofuels into their fuel each year or purchase blending credits from those that do. But small refineries can be exempted from the RFS if they prove that complying would cause them financial strain.

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Video: Wisconsin Corn and Soybean Weed Management Updates and Considerations for 2026 and Beyond

Dr. Rodrigo Werle, associate professor and extension weed scientist, UW–Madison, shares the latest updates and future considerations for corn and soybean weed management in Wisconsin. This presentation covers herbicide resistance trends in waterhemp, including newly confirmed cases of HPPD and S-metolachlor resistance, and emphasizes the importance of residual herbicides and strategic tank mixes for consistent control. Rodrigo also introduces upcoming technologies like Vyconic soybeans and new herbicide products, discusses integrated weed management strategies such as planting green with cover crops, and highlights practical recommendations for 2026 and beyond.

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