Category E: Turf and Ornamentals Minnesota Pesticide Exam (Terms to Know) 100% Correct

Abiotic related to factors or things that are separate and independent from living things; nonliving (air pollutants, wind, water, temperature) Abiotic stresses Caused by unfavorable growing conditions (drought, wind, flood) Absorption The movement of pesticides into plants and, to a lesser degree, soil microorganisms. Adjuvant/Additive Substance added to a pesticide to improve its effectiveness, usability or safety such as penetrants, spreader-stickers, storage stabilizers and wetting agents. adventitious roots roots produced by certain stems if roots are separated from the plant or if injury occurs. Adsorption Adhesion of an ultra thin layer of molecules to the surface of particles. The molecules do not penetrate the surface.Aesthetic threshold pest population density level when pest management methods must be applied to prevent reaching unacceptable levels of aesthetic damage to a plant or landscape Alleopathy chemical inhibition of one plant by another Annual A plant that completes its life cycle in one year Aquatic life Fish, invertebrates and others that live in water. Bacteria/Bacterium Single celled organisms, some of which cause disease in plants and animals Bactericide A chemical used to control bacteria. Backflow Reverse flow of a liquid (such as a pesticide) into a water supply. Backflow can occur during chemigation or when f