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Mark VanGessel, Extension Weed Specialist; mjv@udel.edu The June 13th, issue of Weekly Crop Update Volume 33, Issue 14 – University of Delaware Cooperative Extension
As we try to maximize the trips across the field, more and more products are being tank mixed together.
Sometimes tank mixtures are not recommended due to a loss of efficacy when certain products are used
at the same time, and this is referred to as antagonism. An example of this is tank mixing glyphosate
with triazine herbicides while trying to control Italian rye grass. Another example is tank mixing 2,4-D with clethodim and reduction of grass control.
Sometimes tank mixtures do not blend well and you can end up with a gunky mess in the tank. This can
often be avoided by mixing in the proper order. Most herbicides have directions on their label for the
proper mixing order: unfortunately, these directions may not address all the products you want to include.
Looking over numerous herbicides and the recommended order, here is a generalized mixing list.
Remember first refer to the label and if something is not listed, this list can provide some guidance.
