EPA Issues Seven-Year Registrations for Enlist Duo and Enlist One

EPA has issued seven-year registrations for Corteva Agriscience’s Enlist Duo and Enlist One herbicides to help ensure growers have access to effective pesticide tools for the 2022 growing season.

The new product labels incorporate robust control measures to protect non-target plants and animals, meet Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) standards, and comply with the Endangered Species Act (ESA).

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Enlist Duo and Enlist One herbicides are used to control weeds in conventional and genetically modified cotton, corn, and soybean crops. Both products – registered in 2014 and 2017 respectively – would have expired in January 2022 without registration renewals. Based on EPA’s analysis of scientific data, evaluation of cost-benefit information, and discussions with industry stakeholders, the Agency determined that Enlist products – with new protective measures in place – should remain available to most U.S. farmers.

To evaluate the proposed uses of the Enlist products, EPA evaluated the potential effects of these products on federally threatened or endangered (listed) species and their designated critical habitats, in ESA consultation with the U.S. Fish and Wildlife Service. EPA also completed a comprehensive ecological risk assessment on the risks of 2,4-D choline salt (2,4-D) – an active ingredient in both Enlist products – and glyphosate dimethylammonium salt (glyphosate), an active ingredient in Enlist Duo.

Based on their findings, EPA is requiring a variety of protective measures as a condition of the product registrations, including:

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  • Prohibiting Enlist product application when rainfall is expected to occur within 48 hours and when soil can no longer absorb water
  • Prohibiting irrigation that would result in runoff of Enlist products within 48 hours of application
  • Requiring users to select from a list of runoff reduction measures to reduce 2,4-D and glyphosate concentrations in runoff, while also providing users with flexibility
  • Minimizing Enlist product application when cotton and soybean crops are in bloom to reduce risks to insect pollinators, such as honey bees
  • Requiring the registrant to develop and provide mandatory education and training materials that emphasize the importance of pollinators and pollinator habitat for species including, but not exclusive to, monarch butterflies.

EPA will also prohibit the use of Enlist Duo and Enlist One in counties where EPA identified risks to on-field listed species that use cotton, corn, or soybean fields for diet and/or habitat. EPA does not expect this measure to disrupt the use of Enlist products for most U.S. farmers since the counties impacted represent approximately 8% of cotton acres, 3% of corn acres, and 2% of soybean acres nationally.

Counties in cotton-producing states where use of Enlist products are prohibited are:

ALABAMA: Covington

ARIZONA: Yuma, Pinal, or Pima counties in areas south of Interstate Highway 8 and west of U.S. Highway 85. In Yuma, Pinal, Maricopa, Pima, La Paz, and Santa Cruz counties, do not use GF3335 on land administered by the U.S. Fish and Wildlife Service or National Park Service.

ARKANSAS: Crawford, Franklin, Johnson, Little River, Logan, Montgomery, Polk, Scott, Sebastian, Sevier, and Yell

FLORIDA: Brevard, Broward, Charlotte, Collier, DeSoto, Glades, Hardee, Hendry, Highlands, Hillsborough, Indian River, Jackson, Lee, Manatee, Martin, Miami-Dade, Okeechobee, Orange, Osceola, Palm Beach, Polk, Santa Rosa, Sarasota, and St. Lucie

GEORGIA: Baker, Berrien, Brooks, Burke, Calhoun, Early, Irwin, Lee, Miller, Screven, Worth

KANSAS: Chautauqua, Cherokee, Cowley, Elk, Greenwood, Labette, Montgomery, Neosho, Wilson, and Woodson.

LOUISIANA: Natchitoches

OKLAHOMA: Adair, Atoka, Bryan, Carter, Cherokee, Choctaw, Cleveland, Coal, Craig, Creek, Delaware, Garvin, Haskell, Hughes, Johnston, Kay, Latimer, Le Flore, Lincoln, Love, Marshall, Mayes, McClain, McCurtain, McIntosh, Murray, Muskogee, Noble, Nowata, Okfuskee, Okmulgee, Osage, Ottawa, Pawnee, Payne, Pittsburg, Pontotoc, Pottawatomie, Pushmataha, Rogers, Seminole, Sequoyah, Tulsa, Wagoner, and Washington.

SOUTH CAROLINA: Orangeburg

TENNESSEE: Wilson

TEXAS: Bastrop, Bell, Bowie, Burleson, Cameron, Colorado, Cooke, Fannin, Grayson, Hidalgo, Hill, Lamar, McLennan, Milam, Nueces, Red River, Refugio, Robertson, San Patricio, Victoria, Willacy, and Williamson.

More information about Enlist Duo and Enlist One is included in an EPA Q&A document, available online.

Based on information from the U.S. EPA.

 

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