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Glossary ...
Absorption Penetration of a substance from the surface to below the surface. ...
Acid equivalent The acid portion of the active ingredient. Rates of acid-based herbicides (2,4-D, dicamba, glyphosate, dalapon, picloram) should be expressed as acid equivalents per unit area. ...
Activated charcoal A material used to absorb poisons in the stomach. Also used to bind herbicides at time of application, such as carbon banding along the seed row. ...
Active ingredient The chemical in a formulated product responsible for herbicidal effects. ...
Acute oral LD50 Dosage required to kill 50% of test animals given a single oral dose in toxicity studies. ...
Acute toxicity The amount of a substance, as a single dose, to cause poisoning in a test animal. ...
Adjuvant Any substance in a herbicide formulation that enhances the effectiveness of the herbicide. ...
Adsorption Adherence of a substance to a surface. ...
Agitate To mix continuously. ...