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Have your agronomic questions answered by a Farm Journal agronomist. E-mail us directly at TestPlots@FarmJournal.com, and we’ll respond on this blog to provide an interactive dialogue.

You Can Address Marestail Control This Fall

Sep 24, 2010

Question: Could you please tell me what will kill marestail? The neighbor has it in his soybeans, and it is spreading over into our farm.

Answer: The majority of marestail emerges in the fall; however, some can also emerge in the spring or early summer. It is best to control marestail in the late fall or early spring. An application of 2,4-D ester in the fall will greatly reduce marestail populations the following spring. If you cannot apply in the fall, make a spring application when the marestail weeds are less than 2-inches tall. The combination of 2,4-D ester and glyphosate is a very effective and economical treatment. Keep in mind that many populations of marestail are ALS resistant and some are glyphosate resistant. Ohio State University has a great extension bulletin with more specifics. See the following link:
This blog is provided as an interactive way for you to have your questions answered by our Farm Journal Agronomists. E-mail your nitrogen, soil fertility, soil density, planter set-up, scouting, and other questions to: TestPlots@FarmJournal.com.
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