chapter 18

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chapter 18
2012-01-19 15:53:39

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  1. What are some of the common types of support equipment? Why use it?
    Filler pumps, tank trucks, nurse or mixing tanks, front-end loaders, etc. They make spray operations more efficient.
  2. When you choose the pesticide application equipment for a job, What do you have to consider?
    Working conditions, pesticide formulation, type of area treated, possible problems, etc.
  3. Who usually uses dusters?
    Home gardeners, pest control operators, and truck gardeners for individual spot treatment of plants or small areas.
  4. Can seeders and fertilizer spreaders be used to apply granules? Are changes necessary?
    Yes. No changes are necessary
  5. Can an applicator usually "get by" with owning just a granule spreader? why or why not?
    No, because granular materials do not stick well to foliage and additional machinery is needed
  6. What type of pesticide equipment might you choose if you wanted to reach pests in hard to get at places and then reoccupy the area soon afterwards?
    Aerosol generators or "foggers"
  7. Would a fogger be a good choice if there is a sensitive area nearby and the wind is blowing softly?
  8. Which type of sprayer would you probably choose for treating a small garden in a residential area? why?
    Hand operated
  9. Do only homeowners have good use for hand operated sprayers? explain your answer
    No. The custom applicator will often find it convenient for small jobs that do not require larger powered equipment.
  10. If your job was to treat a few acres of forage crop and water was not easily available, what type of sprayer would you probably choose? why?
    A low pressure boom sprayer. Use a low volume of dilute spray so that one tankfull will cover a larger area.
  11. Is a hydraulic sprayer a low pressure sprayer or a high pressure sprayer?
    A high pressure sprayer
  12. What type of sprayer would you probably choose to treat an oak tree in a backyard with a wettable powder formulation? why?
    High pressure sprayer. Mechanical agitators are standard and keep wettable powders well mixed in the tank.
  13. If water was not readily available and there was no wind, would you choose another sprayer to treat an oak tree? which one? why?
    Yes. An airblast sprayer. It works well when there is no windy conditions and a little water will cover a large area. Only the concentrate spray tank must be filled.
  14. If you were an inexperienced applicator, which type of sprayer might easily lead you to injure crops or wildlife by overdosing with concentrated pesticides?
    Airblast sprayer
  15. How much must the pressure increase to double the flow rate?
    Pressure must be increased four times to double the flow rate.
  16. Name the nozzle material that is least resistent to wear, and the one that is most durable.
    • Brass-least resistant to wear
    • Ceramic- most durable
  17. Name a pump that has automatic pressure relief characteristics
    Centrifugal pumps, flexible-impeller pumps
  18. What is a major advantage of ground driven pumps?
    The application rate is held constant as the speed changes
  19. List the three functions of a spray nozzle
    To meter or regulate the flow of the liquid. Atomize the liquid stream into droplets. Spread droplets in a specific pattern
  20. How do you determine if a spray tip is worn?
    Worn nozzles spray bad patterns and higher flow rates than new nozzles. Determine spray tip wear by comparing the flow rate of the used tip to the flow rate of a new one.
  21. When is a spray tip worn too much to use?
    If the flow rate of the usd tip is five percent greater than a new one, it should be replaced
  22. Which nozzle delivers a wide flat pattern consisting of of large droplets?
    Flooding nozzles
  23. When should a sprayer be cleaned?
    Clean your sprayer after each days use
  24. When cleaning a sprayer, how many times is water put into the tank and flushed out?
    Water is flushed out three times when cleaning a sprayer properly