ILLINOIS PESTICIDE APPLICATOR EXAM
Spot Application - Answers - Treats only a portion of the total area and are used to
control pests that are grouped or clustered.
Band Application - Answers - treat only a narrow strip over alongside a row of desirable
plants.
Broadcast Application - Answers - Treats the entire area or field.
Effective Swath Width - Answers - The distance each successive swatch should be
offset in order to allow edges of neighboring swaths to overlap.
Hydraulic agitation - Answers - A mixing method in which some solution circulates
through the pump and back into the tank
Mechanical Agitation - Answers - A mixing method using paddles.
Flat Flan - Answers - A thin sheet of spray produced by a flat flan nozzle.
Even Flat Flan - Answers - Thin sheet of spray with uniform deposits across its band
width.
Hollow Cone - Answers - Deposits spray in a circle with no droplets in the center.
Full Cone - Answers - Spray in a circle with droplets throughout the circle.
Spray quality and Droplet Spectrum - Answers - Both describe the range in droplet size
that a spray nozzle produces.
Drift - Answers - A pesticide that moves through the air and escapes to other areas is
pesticide drift.
Particle Drift - Answers - he off target movement of spray particles (droplets) through the
air.
Volatile - Answers - Readily vaporizable or fume producing even at relatively low
temperatures.
Economic Injury Level - Answers - Break-even point at which the cost of pest control
equals the revenue loss caused by a pest.
Economic Threshold - Answers - Is the density of a pest at which a control treatment will
provide an economic return. An economic threshold is the insect's population level or
extent of crop damage at which the value of the crop destroyed exceeds the cost of
controlling the pest.
, Perennial Weed - Answers - A weed that lives for more than 2 years. It may be
herbaceous or woody, depending on whether it's stem over winter.
Biennial Weed - Answers - A weed that lives for two years. Biennials form a rosette in
their first year of life, then produce seed and die in the second year.
Adjuvant - Answers - A chemical added to a pesticide formulation or mixture to modify
the physical properties or enhance performance.
Back-Siphoning - Answers - The movement of a liquid pesticide mixture from a spray
tank through the filling hose into the water source.
Buffering Agents - Answers - Adjuvants used to reduce pesticide inactivation due to the
pH of the spray carrier.
Early Preplant - Answers - Application of a pesticide several weeks before a crop is
planted.
Antagonism - Answers - The reduction in effectiveness of one or more pesticide
components when two or more pesticides are combined.
Annual Weed - Answers - Weed plant that completes its life cycle in 1 year
Drift Reduction Additive - Answers - A thickening adjuvant used to increase droplet size
and reduce drift
Emulsion - Answers - A mixture in which one liquid is suspended as tiny drops in
another liquid. such as oil in water.
Fan-Spray Nozzle - Answers - A nozzle designed to create a thin sheet of spray with a
specific spray angle
General Use Pesticide - Answers - A pesticide that will not harm the applicator or the
environment to an unreasonable degree when used according to directions.
Infectious plant disease - Answers - A disease caused by a pathogen that multiplies and
can be transmitted from plant to plant.
Leaching - Answers - Movement of dissolved materials, such as pesticides, with soil
water as its percolates through (Usually downward) in the soil profile. Amount of
leaching depends on amount of water present and permeability of the soil.
Noxious Weed - Answers - A plant determined to be injurious to public health, crops,
livestock, land or any other property. By law, noxious weeds require control under any
circumstances.
Spot Application - Answers - Treats only a portion of the total area and are used to
control pests that are grouped or clustered.
Band Application - Answers - treat only a narrow strip over alongside a row of desirable
plants.
Broadcast Application - Answers - Treats the entire area or field.
Effective Swath Width - Answers - The distance each successive swatch should be
offset in order to allow edges of neighboring swaths to overlap.
Hydraulic agitation - Answers - A mixing method in which some solution circulates
through the pump and back into the tank
Mechanical Agitation - Answers - A mixing method using paddles.
Flat Flan - Answers - A thin sheet of spray produced by a flat flan nozzle.
Even Flat Flan - Answers - Thin sheet of spray with uniform deposits across its band
width.
Hollow Cone - Answers - Deposits spray in a circle with no droplets in the center.
Full Cone - Answers - Spray in a circle with droplets throughout the circle.
Spray quality and Droplet Spectrum - Answers - Both describe the range in droplet size
that a spray nozzle produces.
Drift - Answers - A pesticide that moves through the air and escapes to other areas is
pesticide drift.
Particle Drift - Answers - he off target movement of spray particles (droplets) through the
air.
Volatile - Answers - Readily vaporizable or fume producing even at relatively low
temperatures.
Economic Injury Level - Answers - Break-even point at which the cost of pest control
equals the revenue loss caused by a pest.
Economic Threshold - Answers - Is the density of a pest at which a control treatment will
provide an economic return. An economic threshold is the insect's population level or
extent of crop damage at which the value of the crop destroyed exceeds the cost of
controlling the pest.
, Perennial Weed - Answers - A weed that lives for more than 2 years. It may be
herbaceous or woody, depending on whether it's stem over winter.
Biennial Weed - Answers - A weed that lives for two years. Biennials form a rosette in
their first year of life, then produce seed and die in the second year.
Adjuvant - Answers - A chemical added to a pesticide formulation or mixture to modify
the physical properties or enhance performance.
Back-Siphoning - Answers - The movement of a liquid pesticide mixture from a spray
tank through the filling hose into the water source.
Buffering Agents - Answers - Adjuvants used to reduce pesticide inactivation due to the
pH of the spray carrier.
Early Preplant - Answers - Application of a pesticide several weeks before a crop is
planted.
Antagonism - Answers - The reduction in effectiveness of one or more pesticide
components when two or more pesticides are combined.
Annual Weed - Answers - Weed plant that completes its life cycle in 1 year
Drift Reduction Additive - Answers - A thickening adjuvant used to increase droplet size
and reduce drift
Emulsion - Answers - A mixture in which one liquid is suspended as tiny drops in
another liquid. such as oil in water.
Fan-Spray Nozzle - Answers - A nozzle designed to create a thin sheet of spray with a
specific spray angle
General Use Pesticide - Answers - A pesticide that will not harm the applicator or the
environment to an unreasonable degree when used according to directions.
Infectious plant disease - Answers - A disease caused by a pathogen that multiplies and
can be transmitted from plant to plant.
Leaching - Answers - Movement of dissolved materials, such as pesticides, with soil
water as its percolates through (Usually downward) in the soil profile. Amount of
leaching depends on amount of water present and permeability of the soil.
Noxious Weed - Answers - A plant determined to be injurious to public health, crops,
livestock, land or any other property. By law, noxious weeds require control under any
circumstances.
