Exam (elaborations)
NH Pesticide - ROW - B
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NH Pesticide - ROW - B
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NH PESTICIDE - ROW – B QUESTIONS &100% VERIFIED CORRECT ANSWERS
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u Chapter 2 - Chapter 2
Ways you may be exposed to pesticide - -Dermal -Eye -Respiratory
When is a formal respiratory program needed - -When respirators are used -Must include all
requirements outlined in OSHA respiratory protection standard
Problems caused by lateral movement of soil-active herbicides - -Particularly bare-ground treatment -
Lateral movement may cause excessive destruction of vegetation and result in soil erosion or cause
injury to desirable vegetation -On sloped areas = erosion -Injury to adjacent areas
Precautions to consider when treating aquatic sites - -Use herbicides labeled for that purpose -Avoid drift
-Keep spray out of water -Keep buffer adjacent to aquatic site -Be alert to lateral movement or runoff -
Need special permit
List concerns of livestock owners when ROW crosses pasture land - -Herbicide residue will poison
livestock -Active ingredient could appear in meat or milk making commodities unsellable -Overspray and
drift -Make sure pesticide is labeled for use in pasture -Do no apply if labeled for non-crop areas -Be
aware of re-entry times -Wild cherry becomes poisonous after spraying, needs to be fully removed
Recognize proper methods of preventing back-siphoning of pesticide into water - -Use separate pump
with check valves -Don't let filler hose dip into tank -Use back flow devices -Don't use water source used
for domestic purposes or watering livestock
Recognize features of sprayer filling station selected to minimize spills and contamination - -Designed to
minimize problems -Not located on pond or stream -Area slopped away from surface water -Triple rinse
containers
,Identify who is responsible for cleaning up pesticide spill - The applicator
Methods for cleaning a spill and decontaminating spill area - -PPE -Contain spill -Isolate area -Call
appropriate emergency response -If pest. in soil, remove upper layer -Can use activated charcoal
Chapter 3 - Chapter 3
Overspray - When pesticide is applied directly outside of target area
Problems that arise because of drift - -Damage to non-target plants -Contaminate surface waters -Harm
wild or domestic animals or people -Legal matters -Reputation -Costs
Particle Drift - -At time of application, small particles move from target area
Vapor Drift - -Spray turns to gas and fumes and move from target area
5 Factors that increase particle drift - -Droplet size decrease -Wind speed increase -Nozzle height
increase -Temp increase -Humidity decrease
Most important factor affecting particle drift - -Spray droplet size
Discuss effects of air stability and temp inversions on particle drift - -Don't affect drift directly but provide
conditions where it is more likely to occur -Air stability is warmed at the plant surface and rises causing
currents to move droplets upward. Wind then moves them off site. -Layer of warm air is sandwiched
between layers of cold caused by rapid cooling of plant surface. Lost heat radiates upward causing air to
be warmer above surface. Inversion indicated by fog or smoke at ground level
Clues that suggest temperature inversion - -Ground fog or smoke that move laterally in concentrated
cloud instead of moving upward and dissapating. -Common on clear, calm nights, and last into the
morning
, Factors that increase particle drift also increase vapor drift - -Particle size, temp, wind
Effects of pesticide, temperature and soil moisture on vapor drift - -Volatility increase w temperature
increase -Wet soil increases rate of volatization and decreases effectiveness of incorporation
State first rule of drift management - -Know when not to spray
Discuss site conditions before deciding to spray - -Weather -Sensitive areas -Sprayer setup:drop size,
nozzle type, distance to target -Assess risks:Likelihood of drift, pesticide factors, consequence of drift
3 ways to widen window of application for spraying - -Pest detection: scout and map, help with being
patient with application -Flexible IVM plant can give wider range of choices -Buffer zones: areas between
target and sensitive areas
2 main considerations for reducing drift - -Use lowest nozzle distance that provides uniform coverage -
Apply coarsest droplet size spectrum that provides sufficient coverage
Factors that effect proportion of small droplets in pesticide spraying - -Spray pressure: higher means
small droplet size, lower means bigger droplet -Nozzles: larger openings or narrower spray angle
produce fewer fine droplets -Spray rate;higher rate lets you use larger opening nozzle -Drift control
agents
3 advantages of boom sprayer over mist blowers with respect to spray drift - -Produce larger spray
droplets -Release closer to target -Direct them downward rather than laterally
Describe how air-assisted and covered booms help reduce drift and improve deposition - -It covers the
sprayers as they are spraying so no drift can move outward.
Use procedure provided to select nozzles that provide adequate deposition w least risk of drift - -
Spectrum allows you to use the coarsest spray possble that provides adequate coverage and efficacy
Chapter 4 - Chapter 4
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