Category E Turf & Ornamentals Pesticide
Exam – Minnesota – Terms Summary
Abiotic -CORRECTANSWER related to factors or things that are separate and
independent from living things; nonliving (air pollutants, wind, water, temperature)
Abiotic stresses -CORRECTANSWER Caused by unfavorable growing conditions
(drought, wind, flood)
Absorption -CORRECTANSWER The movement of pesticides into plants and, to a
lesser degree, soil microorganisms.
Adjuvant/Additive -CORRECTANSWER Substance added to a pesticide to improve its
effectiveness, usability or safety such as penetrants, spreader-stickers, storage
stabilizers and wetting agents.
adventitious roots -CORRECTANSWER roots produced by certain stems if roots are
separated from the plant or if injury occurs.
Adsorption -CORRECTANSWER Adhesion of an ultra thin layer of molecules to the
surface of particles. The molecules do not penetrate the surface.
, Aesthetic threshold -CORRECTANSWER 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 -CORRECTANSWER chemical inhibition of one plant by another
Annual -CORRECTANSWER A plant that completes its life cycle in one year
Aquatic life -CORRECTANSWER Fish, invertebrates and others that live in water.
Bacteria/Bacterium -CORRECTANSWER Single celled organisms, some of which
cause disease in plants and animals
Bactericide -CORRECTANSWER A chemical used to control bacteria.
Backflow -CORRECTANSWER Reverse flow of a liquid (such as a pesticide) into a
water supply. Backflow can occur during chemigation or when filling tanks.
Beneficial insects -CORRECTANSWER Insects that are essential for pollination of
plants or play a role in plant health care.
Biennial -CORRECTANSWER A plant that requires two growing seasons to complete
its life cycle
Exam – Minnesota – Terms Summary
Abiotic -CORRECTANSWER related to factors or things that are separate and
independent from living things; nonliving (air pollutants, wind, water, temperature)
Abiotic stresses -CORRECTANSWER Caused by unfavorable growing conditions
(drought, wind, flood)
Absorption -CORRECTANSWER The movement of pesticides into plants and, to a
lesser degree, soil microorganisms.
Adjuvant/Additive -CORRECTANSWER Substance added to a pesticide to improve its
effectiveness, usability or safety such as penetrants, spreader-stickers, storage
stabilizers and wetting agents.
adventitious roots -CORRECTANSWER roots produced by certain stems if roots are
separated from the plant or if injury occurs.
Adsorption -CORRECTANSWER Adhesion of an ultra thin layer of molecules to the
surface of particles. The molecules do not penetrate the surface.
, Aesthetic threshold -CORRECTANSWER 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 -CORRECTANSWER chemical inhibition of one plant by another
Annual -CORRECTANSWER A plant that completes its life cycle in one year
Aquatic life -CORRECTANSWER Fish, invertebrates and others that live in water.
Bacteria/Bacterium -CORRECTANSWER Single celled organisms, some of which
cause disease in plants and animals
Bactericide -CORRECTANSWER A chemical used to control bacteria.
Backflow -CORRECTANSWER Reverse flow of a liquid (such as a pesticide) into a
water supply. Backflow can occur during chemigation or when filling tanks.
Beneficial insects -CORRECTANSWER Insects that are essential for pollination of
plants or play a role in plant health care.
Biennial -CORRECTANSWER A plant that requires two growing seasons to complete
its life cycle
