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The Nuts and Bolts of Herbicides

A comprehensive look into herbicides for making safe applications while creating an effective weed control program.

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Course Summary:

This course will give turf managers the ability to build on their herbicide knowledge to make informed and safe application decisions. The discussion will focus on the basic differences between herbicides with different modes of actions (MOAs) in warm and cool-season turf, including non-selective vs. selective, contact vs. systemic, ester vs. amine, and mode of action vs. site of action. Turf managers will learn how to use the categories of herbicides plus their chemical and physical properties to not only create an effective weed control plan but to properly mix, apply, and respond appropriately to an accident or misapplication.

About the Instructor:

Aaron Hathaway is the Technical Services Manager at Nufarm and lives in Michigan. Before joining Nufarm in February of 2019, he spent nearly two decades at Michigan State University concentrating on weed science. He conducted field research in turfgrass systems, covering weed control, fertility and nitrogen fate, and plant growth regulator (PGR) use. Aaron has a wealth of experience teaching turf classes and speaking to both superintendents and lawn care groups.

GCSAA Education Points:

This course has been approved for the following GCSAA education points:
To qualify for 0.50 education points, participants must complete at least 5 of the online courses that have been approved by GCSAA.

An approval code will be revealed after you complete the video. You must submit the approval code to GCSAA and use February 1 as the event date. You can record your attendance by using the online Education Point Affidavit in the Submit Points area of By using the online affidavit, your education points will automatically populate your educational history. If you do not have access to the Internet, you can call GCSAA at (800) 472-7878 and submit the code by phone.


the nuts and bolts of herbicides

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