(f) The following words and terms, when used in this section, have the following meanings, unless the context clearly indicates otherwise: Defoliant-A substance or mixture of substances intended for causing the leaves or foliage to drop from a plant, with or without causing abscission.
Desiccant-A substance or mixture of substances intended for artificially accelerating the drying of plant tissue.
Pesticide-A substance or mixture of substances intended for preventing, destroying, repelling or mitigating a pest, and a substance or mixture of substances intended for use as a plant regulator, defoliant or desiccant.
Plant regulator-
(i) A substance or mixture of substances intended, through physiological action, for accelerating or retarding the rate of growth or rate of maturation, or for otherwise altering the behavior of plants or the produce thereof, but may not include substances to the extent that they are intended as plant nutrients, trace elements, nutritional chemicals, plant inoculants and soil amendments.(ii) The term does not include any of the nutrient mixtures or soil amendments commonly known as vitamin-hormone horticultural products, which are intended for improvement, maintenance, survival, health and propagation of plants, and are not for pest destruction and are nontoxic, nonpoisonous in the undiluted packaged concentration.