Rezilon™ Herbicide receives EPA approval

Break free from ineffective grass control

New Rezilon™ (indaziflam) herbicide provides better hay quality by controlling summer and winter annual broadleaf weeds and grasses. It is designed to protect desirable grasses and control the unwanted grasses that grow in hayfields, non-irrigation ditchbanks, fire breaks and any sites managed for hay. It also helps support managing annual grasses in perennial grass hay fields, a quality few pre- or post-emergence herbicides are able to maintain. This benefits the entire herbicide market and the prime hay-growing landscape.

For year-round control of broadleaf and annual grass weeds, Rezilon is applied in both late summer and late winter. Applications made immediately after a cutting in August or September will help provide pre-emergence control of fall-emerging weeds, while applications made in January or February will provide pre-emergence control of spring-emerging weeds.

/// Click here to watch the Rezilon Herbicide Webinar

/// Rezilon herbicide receives EPA appoval

What is Rezilon Herbicide?

Key Benefits

// Consistent, long-term weed control: Rezilon is a pre-emergence herbicide for annual grass and broadleaf weed control. It is labeled for use in warm-season bermudagrass and bahiagrass pastures or hay fields.

// Increased hay quality: When Rezilon is applied according to label directions, growers could see higher-quality forage on their first cut as a result of controlling annual weed species present.

// Long residual activity: Rezilon should be applied well before weed emergence. Once applied, Rezilon can sit on the soil surface for some time with no degradation from sunlight while waiting on rainfall for activation.

Use & Control

// For year-round annual grass control, make one application of 3 oz/A in the late winter and another 3 oz/A in the late summer.

// Apply Rezilon herbicide at 3-5 fl oz/A in late winter (January - February) to control summer annual weeds.

// Apply 3-5 fl oz/A following a late summer (August - September) cutting for winter annual weed control.

// Do not exceed 6 fl oz/A of Rezilon in a 12-month period with sequential applications.

// When Rezilon herbicide is applied at a rate greater than 3 fl oz/A, hay may not be harvested until 40 days after application.

// There are no grazing restrictions following the application of Rezilon herbicide.

// Factors including soil type, rainfall and the amount of vegetation surface debris and the time of treatment may affect weed control.

// If the herbicide is not activated by rainfall prior to germination, control will be reduced.

// Rezilon is a preemergent herbicide that requires an activating rainfall or irrigation (0.25-0.5”) to be effective. Additionally, it will only provide effective control in areas covered by the target rate. Annual weed escapes will occur if coverage is uneven or if a lower effective rate is applied between spray swaths.


Key Species Controlled

// Sandbur

// Crabgrass

// Ryegrass

// Goosegrass

// Annual foxtails

Rezilon Herbicide Webinar


Introduction/overview of Bayer in R&P Market
-Gueth Braddock/Brian Cain, Bayer ES

Rezilon stewardship and use
-Dr. Jason Belcher, Bayer ES

Importance of weed control for quality forage production
-Perry Mobley, AGRI-AFC

Rezilon research and fit in Georgia
-Dr. Lisa Baxter, University of Georgia

Rezilon research and fit in Texas
-Dr. Scott Nolte, Texas A&M

Rezilon research in North Carolina’s coastal plain region
-Leon Warren, Warren QA and Weed Research

-Gueth Braddock/Brian Cain



Always read and follow label use directions, restrictions, and application and stewardship requirements. See the product label for the full list of weeds controlled.

State registrations for Rezilon herbicide are pending. This product is not yet offered for sale.

Rezilon is a registered trademark of Bayer

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