Harrell's SprayMAX® Herbicide Activator is a highly active ammonium sulfate solution designed to modify solution pH and water hardness. The ammoniacal nitrogen in Herbicide Activator has been found to promote herbicide (such as glyphosate) uptake in agricultural applications. Herbicide Activator use of high quality spray grade ammonium sulfate eliminates cold water sedimentation and nozzle plugging commonly found with dry AMS. Herbicide Activator also contains a pH stable antifoam which prevents foaming during tank mixing.

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