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Tank-Mixes with Enlist One (06/18/20)

Postemergence herbicide applications are currently underway or about to be applied on many of our soybean acres.

Postemergence herbicide applications are currently underway or about to be applied on many of our soybean acres. Our spray season has been difficult due to the relentless winds over the past couple of weeks. We may finally be catching a bit of a break in winds over the coming days, and it is important to take our time and make good decisions during the rush to get our fields sprayed. One important part of this process is the proper mixing of herbicides and tank-mix partners to ensure every component properly goes into solution. This will be especially critical for anyone who is spraying Enlist One herbicide on Enlist soybeans. Tank-mixing either AMS or a potassium (K) salt of glyphosate (such as Roundup Powermax) with Enlist One is a popular choice for these postemergence applications, but there can be mixing compatibility issues if the process is rushed. When mixing these products with Enlist One we have to start with plenty of water (at least half the tank), take our time to allow each component to mix into solution, and follow the proper mixing order to avoid compatibility issues with these product combinations.

Here is a link to a webinar sponsored by the United Soybean Board and Take Action that addresses this issue in further detail. Corteva, who manufactures Enlist One, has a factsheet for proper mixing order of different products with Enlist One.

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Joe Ikley

Extension Weed Specialist

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