llinois Pesticide applicator exam
Questions And Answers Latest |Update|
Verified Answers
Nonselective pesticide resistance - CORRECT ANSWER-Over use of broad spectrum
pesticides
Insects - may kill natural preditors of pest -> resurgence
Plants - over time only plants that are resistant survive and produce seed
systemic (translocated) pesticide - CORRECT ANSWER-move in plant / animal from
uptake site to other parts
Effective in plants with underground structures
Contact pesticide - CORRECT ANSWER-control by direct contact with pest
kill annuals if all growing parts are above ground
Information on a label - CORRECT ANSWER-Impact on wildlife, PPE, Re- entry interval
Before purchasing read label - CORRECT ANSWER-label is legal document, general
use pesticide is not given classification
Label - Trade name - CORRECT ANSWER-this specific formulation
60WDG - CORRECT ANSWER-60% AI water-dispersible granule
4EC - CORRECT ANSWER-4 lbs ai per gallon of emulsifiable concentrate
SP - CORRECT ANSWER-Soluable powder - dry formulation. Mixed with water.
Dissolve readily and form true solution.
WP, P - CORRECT ANSWER-Wettable Powder - dry formulation. Finely ground
powder. Forms suspension not true solution.
Abrasive, requires agitation, inhalation risk
DF, WDG - CORRECT ANSWER-Dry flowables or water dispersible granules - dry
formulation. Similar to WP except AI is in granule instead of powder
form suspension. Less dust than WP
G - CORRECT ANSWER-Granules - dry formulation. AI coated with clay, newspaper
Applied directly, no mixing
Low hazzard to applicators
,P, PS - CORRECT ANSWER-Pellets - dry formulation. Same as granules but larger
D - CORRECT ANSWER-Dusts - dry formulations.
Low percentage of AI on very fine carrier (talk, chalk, clay)
Most ready to use (no mixing)
Inhilation hazard
Drift hazzard (uncommon use)
EC - CORRECT ANSWER-Emulsifiable concentrate - wet formulation.
AI mixed with 1+ solvents and emulsifier that allows mixing with water
Easily absorbed through skin (dermal hazzard)
ME - CORRECT ANSWER-Microencapsulated - wet formulation
AI is surrounded by plastic coating suspended in liquid
Time- release product
Bees catty it back to hive and can poison colony
S - CORRECT ANSWER-Solutions - wet formulation
Form true solution when mixed
Will not settle or separate
ULV - CORRECT ANSWER-Ultra-low volume concentration - wet formulation
Have high % ai with a solvent (usually oil)
Low application rate per acre
Fumigants - CORRECT ANSWER-Produce gas, vapor, fumes, etc.
Special licencing required
Highly toxic
Restricted use pesticides - CORRECT ANSWER-Only purchased by certified
applicators or persons under their supervision
Records of applications must be maintained for 2 years
Adjuvant - CORRECT ANSWER-Chemical modifies physical properties, enhances
performance or both of pesticides
Includes spray modifiers
What is a pesticide - CORRECT ANSWER-a substance used for destroying insects or
other organisms harmful to cultivated plants or to animals.
Pesticides are made up of - CORRECT ANSWER-Active and inert ingredients
AI - CORRECT ANSWER-Active ingredient - chemical effective against pest
Inert ingredients - CORRECT ANSWER-don't harm pest but make the AI more effective
, Herbicide formulation - CORRECT ANSWER-may be ready to use or may require
dilution with carrier (oil or liquid)
Activatior adjuvants - CORRECT ANSWER-Water spreader (surfactants), Sticker (oils,
laytex), humectant,penetrator
utility adjuvants - CORRECT ANSWER-defoamer, water conditioner (acids)
Drift reduction additives - CORRECT ANSWER-thickening agents increase droplet size
Droplets must be over 200 microns
Sticker - CORRECT ANSWER-increase adherence of chemical to surface
Surfactant, Spreaders - CORRECT ANSWER-Spread spray mix more thoroughly
Decreases surface tension of water
Penetrants - CORRECT ANSWER-helps pass through outer surface of plants - through
waxy coating on leaves (cuticle)
Defoaming agents - CORRECT ANSWER-eliminate foam from spray tanks (especially
during agitation)
Mixing of pesticides - CORRECT ANSWER-ensure that pesticides retain properties
when you mix
Do not change toxicity or physical properties when combined
Illegal to mix pesticides with products prohibited on label
Chemical incompatibility - CORRECT ANSWER-antagonism: decrease effectiveness
Synergism: increase effectiveness (can be bad)
*cannot tell if chemically incompatible by mixing alone
physical incompatibility - CORRECT ANSWER-pesticides don't mix properly
Curdling, gel formation, sludge
Perform jar compatibility test
Proper mixing order - CORRECT ANSWER-1) fill tank 1/4-1/2 full of carrier and agitate
2) add compatibility agent
3) add suspension products. Dry first (WP, DF), then liquids (F,L)
4) add emulsion products (EC)
5) add solution products
6) add surfactants/penetrants
7) finish filling tank
Questions And Answers Latest |Update|
Verified Answers
Nonselective pesticide resistance - CORRECT ANSWER-Over use of broad spectrum
pesticides
Insects - may kill natural preditors of pest -> resurgence
Plants - over time only plants that are resistant survive and produce seed
systemic (translocated) pesticide - CORRECT ANSWER-move in plant / animal from
uptake site to other parts
Effective in plants with underground structures
Contact pesticide - CORRECT ANSWER-control by direct contact with pest
kill annuals if all growing parts are above ground
Information on a label - CORRECT ANSWER-Impact on wildlife, PPE, Re- entry interval
Before purchasing read label - CORRECT ANSWER-label is legal document, general
use pesticide is not given classification
Label - Trade name - CORRECT ANSWER-this specific formulation
60WDG - CORRECT ANSWER-60% AI water-dispersible granule
4EC - CORRECT ANSWER-4 lbs ai per gallon of emulsifiable concentrate
SP - CORRECT ANSWER-Soluable powder - dry formulation. Mixed with water.
Dissolve readily and form true solution.
WP, P - CORRECT ANSWER-Wettable Powder - dry formulation. Finely ground
powder. Forms suspension not true solution.
Abrasive, requires agitation, inhalation risk
DF, WDG - CORRECT ANSWER-Dry flowables or water dispersible granules - dry
formulation. Similar to WP except AI is in granule instead of powder
form suspension. Less dust than WP
G - CORRECT ANSWER-Granules - dry formulation. AI coated with clay, newspaper
Applied directly, no mixing
Low hazzard to applicators
,P, PS - CORRECT ANSWER-Pellets - dry formulation. Same as granules but larger
D - CORRECT ANSWER-Dusts - dry formulations.
Low percentage of AI on very fine carrier (talk, chalk, clay)
Most ready to use (no mixing)
Inhilation hazard
Drift hazzard (uncommon use)
EC - CORRECT ANSWER-Emulsifiable concentrate - wet formulation.
AI mixed with 1+ solvents and emulsifier that allows mixing with water
Easily absorbed through skin (dermal hazzard)
ME - CORRECT ANSWER-Microencapsulated - wet formulation
AI is surrounded by plastic coating suspended in liquid
Time- release product
Bees catty it back to hive and can poison colony
S - CORRECT ANSWER-Solutions - wet formulation
Form true solution when mixed
Will not settle or separate
ULV - CORRECT ANSWER-Ultra-low volume concentration - wet formulation
Have high % ai with a solvent (usually oil)
Low application rate per acre
Fumigants - CORRECT ANSWER-Produce gas, vapor, fumes, etc.
Special licencing required
Highly toxic
Restricted use pesticides - CORRECT ANSWER-Only purchased by certified
applicators or persons under their supervision
Records of applications must be maintained for 2 years
Adjuvant - CORRECT ANSWER-Chemical modifies physical properties, enhances
performance or both of pesticides
Includes spray modifiers
What is a pesticide - CORRECT ANSWER-a substance used for destroying insects or
other organisms harmful to cultivated plants or to animals.
Pesticides are made up of - CORRECT ANSWER-Active and inert ingredients
AI - CORRECT ANSWER-Active ingredient - chemical effective against pest
Inert ingredients - CORRECT ANSWER-don't harm pest but make the AI more effective
, Herbicide formulation - CORRECT ANSWER-may be ready to use or may require
dilution with carrier (oil or liquid)
Activatior adjuvants - CORRECT ANSWER-Water spreader (surfactants), Sticker (oils,
laytex), humectant,penetrator
utility adjuvants - CORRECT ANSWER-defoamer, water conditioner (acids)
Drift reduction additives - CORRECT ANSWER-thickening agents increase droplet size
Droplets must be over 200 microns
Sticker - CORRECT ANSWER-increase adherence of chemical to surface
Surfactant, Spreaders - CORRECT ANSWER-Spread spray mix more thoroughly
Decreases surface tension of water
Penetrants - CORRECT ANSWER-helps pass through outer surface of plants - through
waxy coating on leaves (cuticle)
Defoaming agents - CORRECT ANSWER-eliminate foam from spray tanks (especially
during agitation)
Mixing of pesticides - CORRECT ANSWER-ensure that pesticides retain properties
when you mix
Do not change toxicity or physical properties when combined
Illegal to mix pesticides with products prohibited on label
Chemical incompatibility - CORRECT ANSWER-antagonism: decrease effectiveness
Synergism: increase effectiveness (can be bad)
*cannot tell if chemically incompatible by mixing alone
physical incompatibility - CORRECT ANSWER-pesticides don't mix properly
Curdling, gel formation, sludge
Perform jar compatibility test
Proper mixing order - CORRECT ANSWER-1) fill tank 1/4-1/2 full of carrier and agitate
2) add compatibility agent
3) add suspension products. Dry first (WP, DF), then liquids (F,L)
4) add emulsion products (EC)
5) add solution products
6) add surfactants/penetrants
7) finish filling tank
