SPRINGFIELD, Ill. – The Illinois Department of Agriculture (IDOA) today announced permanent state-specific restrictions for the use of dicamba on soybeans. The permanent restrictions remained unchanged from the 2020 and 2021 growing seasons. IDOA’s proposed administrative rules were published in the Secretary of State’s Journal Illinois Registry last December, allowing for public comment during the first notice period.
In October 2020, the USEPA announced that it had renewed Federal Insecticides, Fungicides, and Rodenticides Act (FIFRA) registrations for three dicamba-based pesticides for the 2021-2025 growing seasons. Unlike past practice, the USEPA said the only way for states to add safety restrictions to these products is through FIFRA Section 24(a), which allows a state to add restrictions through its regulatory process.
In addition to federally approved label requirements, the IDOA standing rules include the following requirements for the use of pesticides containing dicamba on soybeans:
• A pesticide containing dicamba should not be applied to soybeans if the air temperature in the field at the time of application is above 85 degrees Fahrenheit or if the high temperature predicted by the National Weather Service for the location closest available for the day of application exceeds 85 degrees. Fahrenheit. Local forecasts from the National Weather Service are available at https://www.weather.gov.
• Application to soybeans of a pesticide containing dicamba must not be made after June 20 of each year.
• Before applying a pesticide containing dicamba to soybeans, the applicator should consult the FieldWatch Susceptible Crop Registry (https://www.fieldwatch.com) and follow all associated record keeping and labeling requirements.
• Application to soybeans of a pesticide containing dicamba should not be made if the wind is blowing toward an Illinois Nature Preserves Commission site adjacent to the field of application; or an adjacent residential area.
In addition to these provisions, applicators must follow federal guidelines with respect to the application of dicamba, including completing annual Dicamba-specific training and being a certified applicator.
The intent of these additional restrictions is to reduce the potential for off-target movement of this product, thereby reducing the potential for possible adverse effects on dicamba-sensitive crops/areas. Dicamba is primarily used on soybeans for post-emergent broadleaf weed control.