CAN GLYPHOSATE INACTIVATION FROM DUST/DIRT BE REDUCED OR ELIMINATED?
(Side note – There is probably little concern of this with the recent rains but it is good to review the concept.) Inactivation of glyphosate from dust is different than inactivation from antagonistic salts in water so the proven methods to eliminate hard water antagonism may help but actually not do much to eliminate inactivation from dust. Glyphosate is tightly bond to soil components and organic matter and this binding is non-reversible. That is one reason why glyphosate has no residual activity even though the herbicide can be detected by analysis for several days or weeks after application. Salt interaction with glyphosate is reversible with ammonium sources of nitrogen but requires ammonium sulfate (AMS) to inactivate and precipitate the hard water cations. Because glyphosate binding with soil and organic matter is non-reversible, AMS would not help to overcome the deactivation but would help to increase glyphosate activity through water conditioning and increased absorption. Wha
