Rangeland Ecology & Management

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(from surface active agent) Material used in herbicide formulations to bring about emulsifiability, spreading, wetting, sticking, dispersibility, solubilization or other surface-modifying properties. Also see adjuvant.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.