STP1507: A Unique Formulation of Glyphosate in the Acid Form

    Volgas, Gregory
    Helena Chemical Company, Memphis, TN

    Mack, Robert E.
    Helena Chemical Company, Memphis, TN

    Roberts, Johnnie
    Helena Chemical Company, Memphis, TN

    Wayland, Mark
    Helena Chemical Company, Memphis, TN

    Alford, Bobby
    Helena Chemical Company, Memphis, TN

    Pages: 8    Published: Jan 2009


    Glyphosate is a broad-spectrum herbicide effective on deep-rooted perennial species and on annual and biennial species of grasses, sedges, and broadleaf weeds. The solubility of glyphosate acid is relatively low in water, 12 g/L (25°C). Since glyphosate is an acid, however, numerous water-soluble salts can be formed. Recently, formulations have been developed that avoid the need to make salts. Instead, the glyphosate is presented in the acid form. Unlike traditional glyphosate salt formulations, that need surfactants to enhance their uptake, the acid formulation of HM-2028 does not rely on reduced surface tension or other surfactant effects to provide excellent uptake and herbicide efficacy.


    glyphosate, herbicide, surface tension, uptake, translocation, fluorescence imaging, ABUTH, CHEAL, IPOLA, AMBEL

    Paper ID: STP48702S

    Committee/Subcommittee: E35.22

    DOI: 10.1520/STP48702S

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