Controlling Weeds with Glufosinate? Use Our Handy Cheat Sheet

LeRoy Toohey

Feb. 13, 2023

What Is Glufosinate? 

Glufosinate is a post emergence, non-selective herbicide for broadcast use on canola, corn, cotton, and soybean crops designated as LibertyLink® or glufosinate tolerant. 

Glufosinate herbicide has been around in various formulations for many years, dating all the way back to the 1990s with the introduction of Liberty® herbicide products

Today farmers have access to formulations from many different manufacturers, some packaging the same active ingredients under multiple brand names. This is often because products may be labeled for different uses, which is why it’s extremely important to read and follow the label instructions when selecting herbicides.

[Find herbicides to control yield-robbing weeds and grasses on FBN Direct®.]

Glufosinate Brands Available on the Market

The following examples use the same active ingredient—24.5% glufosinate ammonium—but may be labeled differently as to where they can be applied:

Glufosinate Tolerant Soybeans

Combination herbicide tolerances are also available, stacking glufosinate with other herbicide chemistries. Enlist™ E3 and others have the glufosinate trait combined with other herbicide traits. Confirm on the seed tag that glufosinate and other herbicides are approved for application.

How to Apply Glufosinate

After carefully reviewing the label on the product you plan to use, you can apply glufosinate throughout the growing season in conjunction with crop height restrictions as a post-emergence application product on tolerant crops. (To avoid severe crop injury, do not apply glufosinate post-emergence to non-tolerant crops.) 

Glufosinate herbicides can be applied as a standalone burndown herbicide in the fall and spring, but it is better to tank mix with different herbicide modes of action to reduce chances of seeing resistant weeds in your fields. Remember to always perform a jar test to confirm compatibility of tank-mixed products.

No matter when you plan to apply glufosinate, always remember to add the appropriate adjuvant and surfactant. Rates and approved adjuvants can vary by region and tank mix partners; consult the herbicide label to figure out what you need in your area. features an adjuvant recommendation tool to help farmers understand what products are labeled to be used with specific herbicides, like glufosinate.  For products such as Willowood Glufosinate 280SL, the recommended Farmers First™ adjuvants to incorporate are Even™ 34L, IN-Zorb™ ADV or FieldGrip™ DRA

Lastly, keep excellent records during spring planting to ensure you know where you’ve planted specific tolerant crops and promote a positive experience with glufosinate.

[Delay Herbicide Resistance in Weeds with These 7 Tactics]

Looking for Solutions to Weed Pressures?

With FBN Direct, you can easily purchase a broad range of key ag chemical products online — including glufosinate. With direct to farm delivery (including flexible scheduling based on your availability), transparent list pricing, special pricing offers and a range of exclusive discount opportunities, FBN Direct is here to help you achieve significant savings for your ag operation this season. 

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Enlist E3™ is a registered trademark of Dow AgroSciences LLC. Glufosinate 280SL and Glufosinate 280SL (OT) are registered trademarks of Willowood USA, LLC/Generic Crop Science LLC. Liberty® 280 SL by Bayer CropScience LP, Ignite® 280 SL and Rely® 280 are registered trademarks of Bayer CropScience LP. Cheetah® Herbicide and Leopard™ Herbicide are registered trademarks of Nufarm Inc.

FBN Direct products and services and other products distributed by FBN Direct are offered by FBN Inputs, LLC and are available only in states where FBN Inputs, LLC is licensed and where those products are registered for sale or use, if applicable. If applicable, please check with your local extension service to ensure registration status. Nothing contained on this page, including the prices listed should be construed as an offer for sale, or a sale of products. All products and prices are subject to change at any time and without notice. Terms and conditions apply.

ALWAYS READ AND FOLLOW LABEL DIRECTIONS. It is a violation of federal and state law to use any pesticide product other than in accordance with its label. The distribution, sale and use of an unregistered pesticide is a violation of federal and/ or state law and is strictly prohibited. We do not guarantee the accuracy of any information provided on this page or which is provided by us in any form. It is your responsibility to confirm prior to purchase and use that a product is labeled for your specific purposes, including, but not limited to, your target crop or pest and its compatibility with other products in a tank mix and that the usage of a product is otherwise consistent with federal, state and local laws. We reserve the right to restrict sales on a geographic basis in our sole discretion. You must have a valid applicator license to use restricted use pesticides. Please consult your provincial department of agriculture for complete rules and regulations on the use of restricted use pesticides, as some products require specific record-keeping requirements. Any product recommendations or preselected bundles are for informational purposes only and should not be used as a replacement for consulting the applicable product label or independently determining the appropriate product offerings and quantities for your operation.

Product Use Statement: Enlist E3® soybeans contain the Enlist E3 trait that provides crop safety for use of labeled over-the-top applications of glyphosate, glufosinate and 2,4-D herbicides featuring Colex-D® technology when applied according to label directions. Following burndown, the only 2,4-D containing herbicide products that may be used with Enlist™ crops are products that feature Colex-D technology and are expressly labeled for use on enlist crops. 2,4-D products that do not contain Colex-D technology are not authorized for use in conjunction with Enlist E3 soybeans. Warning: Enlist E3 soybeans are tolerant of over-the top applications of glyphosate, glufosinate, and 2,4-D. Accidental application of incompatible herbicides to this variety could result in total crop loss. When using 2,4-D herbicides, grower agrees to only use 2,4-D products that contain Colex-D technology authorized for use in conjunction with Enlist E3 soybeans. Always read and follow herbicide label directions prior to use. YOU MUST SIGN A TECHNOLOGY AGREEMENT, READ THE PRODUCT USE GUIDE PRIOR TO PLANTING AND FOLLOW HERBICIDE RESISTANCE MANAGEMENT (HRM) REQUIREMENTS. The transgenic event in the Enlist E3® soybean is protected under Corteva Agriscience and M.S. Technologies, L.L.C. Patent Rights which can be found at: The transgenic event in the Enlist E3® soybean event in Enlist E3® soybeans is jointly developed and owned by Dow AgroSciences LLC and M.S. Technologies, L.L.C. ®™ Enlist, Enlist E3, the Enlist E3 logo and Colex-D are trademarks of Dow AgroSciences LLC. Please read the M.S. Technologies, L.L.C. Use Restriction Agreement located at: -  FBN recommendations regarding seed placement are based on field observations collected by FBN Direct, provided by FBN suppliers, contributed by member farmers or are consistent with local established agronomic practices. Individual results and performance may vary depending on local growing, soil, weather conditions, commodity prices.

LeRoy Toohey

Feb. 13, 2023

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