chapter 15

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chapter 15
2012-01-16 19:48:11

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  1. when a pesticide chemical is mixed with solvents, wetting agents,stickers,powders,granules,ect. , the finished product is called a _______?
  2. what r the common abbreviations for these types of formulations: wettable powder______, emulsifiable concentrate_____, dust______, granules____.
    WP, EC, D, G.
  3. what must u consider when choosing the best formulation for your job? ( 6 items )
    effectiveness against the pest; the plant, animal or surface to be protected; application machinery; danger of drift n runoff; and possible injury to the protected surface.
  4. which pesticide formulation is most often used in household, backyards and other small areas?
  5. which pesticide formulation can be dangerous if the cans r punctured or overheated?
  6. why r dust formulations usually not used on a large scale out-of-doors?
    they may drift long distances from the treated area.
  7. in what type of job are dusts often used?
    to control lice, fleas, n other external parasites on pets n farm animals. in cracks n creices for roaches n other domestic insects.
  8. what types of pests r poisonous bait formulations used to control?
    ants, roaches, flies, rats, mice, and slugs.
  9. why r poisonous baits often used in small amounts ?
    baits r needed only where pests gather.
  10. how do granule formulations differ from dust formulations?
    almost all particles in a granular formulation r the same size n r larger than those making up a dust.
  11. what advantage do granules have over dust or sprays?
    granules drift less, applied w simple, often multi-purpose equipment. they can work through dense foilage to a target underneath.
  12. why wouldnt u choose a granular if u were going to treat a tree or lettuce leaf?
    they will not stick to the foliage surface.
  13. why would u choose a low concentrate liquid formulation if u wanted to be sure in getting the right mixture?
    they are designed to be sprayed as purchased.
  14. what formulation would u choose if you wanted little visible residue n only moderate agitation?
    emulsifiable concentrate.
  15. which formulation is most hazardous to the applicator than most because it is highly concentrated mn is absorbed easily by the skin?
    emulsifiable concentrate.
  16. what is the differance between emulsifiable concentrate n flowables?
    flowables start as solids, r ground into powder, n r suspended in liquid. emulsifiable concentrates start as liquids n r formulated to mix w water or oil.
  17. would u choose an EC or a WP if phytotoxicity might be a problem?
  18. why should a applicator consider wearing a respirator when mixing soluble or wettable powders?
    they might be hazardous to the applicator if he inhales their concentrate dust while mixing.
  19. what formulation would u choose if u wanted to penetrate cracks, crevices, soil, burrows, partitions, n other unexposed areas?
  20. name 2 disadvantages of fumigants?
    they must be applied in an enclosed area or incorporated into the soil; r highly toxic, so all recommended protective gear must be used when applying them.