MASSACHUSETTS PESTICIDE COMPREHENSIVE
ANSWERS AND QUESTIONS SET A+
✔✔Emulsifiable concentrates - ✔✔Easy to apply and handle. easy to over and under
dose due to high concentrations
✔✔Solution - ✔✔Active ingredient dissolved in water for use in sprayers indoor and
outdoor
✔✔Wettable powder - ✔✔Dry powder to be mixed with water or applied dry. Easy to
apply, handle, transport, and store. Slower to dissolve into skin but greater inhalation
risk
✔✔Soluble powders - ✔✔Make a solution when mixed with water
✔✔Flowables - ✔✔Solid that will not dissolve. Impregnated to material like clay and
ground finely to make thick liquid. Need constant agitation, wear to spray parts, form
residues
✔✔Water-dispurable granules or dry flowables - ✔✔Large granules that act as wettable
powders
✔✔Ready-to-use - ✔✔Formulation is premixed, easy to use but high price and organic
solvents used in them harm foliage, not for plant sprays
✔✔Ultra-low-volume - ✔✔Highly concentrated formulations. Need special equipment to
deal with precise measuring and organic solvents dissolve rubber or plastic
✔✔Invert Emulsions - ✔✔Water source pesticide dispersed in oil. Reduces drift, spread
thicker, increase rain resistance
✔✔Aerosols - ✔✔Either ready to use or used in electric or gas powered sprayers.
Limited to use and difficult to confine to spray site
, ✔✔Dust - ✔✔10% or less active with fine dry carrier. Chalk, clay, nutshell. Good for
hard to reach spots, easily drifted off, inhalation dangers, hard even distribution with
moisture
✔✔Granules - ✔✔Like dusts but larger particles, most often for soil control of weeds,
nematodes, insects. Easy to apply but hard to get even distribution, less effective during
drought, birds at risk of feeding
✔✔Pellets - ✔✔like granules but have uniform size. Allows for more precision with
application
✔✔Baits - ✔✔5% or less active ingredient mixed with food or other attractive substance.
Liquid baits work well in unsanitary conditions where food baits will not work. Can drip in
heat and stain pours materials
✔✔Microencapsulated - ✔✔Substance encapsulated by plastic dissolved in water and
sprayed. Reduce odors and drift, safer to apply, much higher risk to bees due to size of
particles similar to pollen
✔✔Fumigants - ✔✔Can be liquid, volatile liquids or solids. All form poisonous gases in
right conditions
✔✔Where would you look on a pesticide label to determine a products formulation -
✔✔Usually on the product label, if not, in "general information" or "directions for use"
section of label
✔✔10WP in pesticide trade name - ✔✔Dry formulation wettable powder, 10% active
ingredient by weight
✔✔6EC in pesticide trade name - ✔✔Wet formulation, 6lbs per gallon for mixture
✔✔Adjuvants - ✔✔Chemicals premixed with pesticide or added to spray tank to improve
mixing, application, or performance
✔✔Surfacent - ✔✔Wetting agents or spreaders; helps pesticide droplets spread evenly
and coat leaf. Important on waxy and hairy leaves
✔✔Stickers - ✔✔Increase adhesion of particles to leafs surface, decreasing wash off,
evaporation, some slowing degradation by sunlight
✔✔Extenders - ✔✔same as stickers
✔✔Plant penetrants - ✔✔Enhance penetration of some pesticides onto plant.
ANSWERS AND QUESTIONS SET A+
✔✔Emulsifiable concentrates - ✔✔Easy to apply and handle. easy to over and under
dose due to high concentrations
✔✔Solution - ✔✔Active ingredient dissolved in water for use in sprayers indoor and
outdoor
✔✔Wettable powder - ✔✔Dry powder to be mixed with water or applied dry. Easy to
apply, handle, transport, and store. Slower to dissolve into skin but greater inhalation
risk
✔✔Soluble powders - ✔✔Make a solution when mixed with water
✔✔Flowables - ✔✔Solid that will not dissolve. Impregnated to material like clay and
ground finely to make thick liquid. Need constant agitation, wear to spray parts, form
residues
✔✔Water-dispurable granules or dry flowables - ✔✔Large granules that act as wettable
powders
✔✔Ready-to-use - ✔✔Formulation is premixed, easy to use but high price and organic
solvents used in them harm foliage, not for plant sprays
✔✔Ultra-low-volume - ✔✔Highly concentrated formulations. Need special equipment to
deal with precise measuring and organic solvents dissolve rubber or plastic
✔✔Invert Emulsions - ✔✔Water source pesticide dispersed in oil. Reduces drift, spread
thicker, increase rain resistance
✔✔Aerosols - ✔✔Either ready to use or used in electric or gas powered sprayers.
Limited to use and difficult to confine to spray site
, ✔✔Dust - ✔✔10% or less active with fine dry carrier. Chalk, clay, nutshell. Good for
hard to reach spots, easily drifted off, inhalation dangers, hard even distribution with
moisture
✔✔Granules - ✔✔Like dusts but larger particles, most often for soil control of weeds,
nematodes, insects. Easy to apply but hard to get even distribution, less effective during
drought, birds at risk of feeding
✔✔Pellets - ✔✔like granules but have uniform size. Allows for more precision with
application
✔✔Baits - ✔✔5% or less active ingredient mixed with food or other attractive substance.
Liquid baits work well in unsanitary conditions where food baits will not work. Can drip in
heat and stain pours materials
✔✔Microencapsulated - ✔✔Substance encapsulated by plastic dissolved in water and
sprayed. Reduce odors and drift, safer to apply, much higher risk to bees due to size of
particles similar to pollen
✔✔Fumigants - ✔✔Can be liquid, volatile liquids or solids. All form poisonous gases in
right conditions
✔✔Where would you look on a pesticide label to determine a products formulation -
✔✔Usually on the product label, if not, in "general information" or "directions for use"
section of label
✔✔10WP in pesticide trade name - ✔✔Dry formulation wettable powder, 10% active
ingredient by weight
✔✔6EC in pesticide trade name - ✔✔Wet formulation, 6lbs per gallon for mixture
✔✔Adjuvants - ✔✔Chemicals premixed with pesticide or added to spray tank to improve
mixing, application, or performance
✔✔Surfacent - ✔✔Wetting agents or spreaders; helps pesticide droplets spread evenly
and coat leaf. Important on waxy and hairy leaves
✔✔Stickers - ✔✔Increase adhesion of particles to leafs surface, decreasing wash off,
evaporation, some slowing degradation by sunlight
✔✔Extenders - ✔✔same as stickers
✔✔Plant penetrants - ✔✔Enhance penetration of some pesticides onto plant.
