Chapter 9- Aerial Application Technology Flashcards
Learning how to manage offsite pesticide drift during an aerial application is part of…
Application technology
The last application flight of the day…
Requires the same attention as every other flight
Ferrying flights must be made at an altitude of at least…
500 feet
Ferrying flights that pass over areas where people live or work should…
Be varied by 1/8 to 1/4 mile for each trip
One purpose of a flight over the field to be treated just before the actual application is to…
Test the ground crew communication system
Breaks seen in the normal cultivation patterns of a field may alert the pilot to…
Hidden hazards
Relying solely on maps and observation of hazards made during a previous application to the same field is not a substitute for a pre-application inspection flight because…
There may be new hazards to consider at the site
It is necessary to suspend the application if…
People are seen walking on the upwind edge of the field being treated
Too wide or too narrow overlapping of spray passes will result in…
Uneven application patterns
The recommended application height for most liquid sprays is…
8 feet
To avoid the adverse effect of headwinds or tailwinds on an application rate, you should fly…
Crosswind or 45 degrees to the crosswind
Varying the speed during an application will…
Result in uneven coverage
The application pattern that helps to avoid flying through spray from a previous swath is the…
Race track pattern
The usual height for making granule application is…
30 to 50 feet
The problem with flying too low when making a granule application is that…
Granules are still moving horizontally at lower heights
Offsite pesticide drift is the offsite movement of the pesticide that occurs…
At the time of pesticide application or soon thereafter
When applying a contact insecticide, the recommended droplet spectrum category is…
Fine
When applying contact or systemic foliar herbicides, the recommended droplet spectrum category is…
Medium
The optimum time for making an aerial application of a liquid when droplet evaporation is a concern is…
Early morning
Which of the following factors has NO effect on offsite pesticide drift?
Constant 3mph wind
Wider-angle spray nozzles usually produce ______ droplets than narrower spray nozzles.
Finer
The most effective boom lengths for reducing the amount of drift are…
75% of the wingspan or 90% of the rotor span
Aside from external factors, the most important factors affecting offsite drift are…
The size of the spray droplets and the percentage of droplets within a certain size range
Driftable fines are droplets in the size range of…
50 to 100 microns
The droplet size at which spray drift becomes a concern is…
200 microns and below
Spray that has a numerical value for droplet size Dvo8 less than 200 microns will result in a spray that has ______ percent of the droplets greater than 200 microns.
20
