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  1. complete metamorphosis
    egg, larva, pupa,adult
  2. weed
    plant growing where not wanted
  3. weed classifications
    • - grasses
    • - sedges - triangular stem, and three rows of leaves
    • - broadleaves
  4. all plants go through 4 stages of growth
    • 1 seedlings
    • 2 vegetative state
    • 3 reproductive
    • 4 maturity
  5. annuals
    plants that complete a life cycle in one year
  6. biennials
    require two years to complete their life cycle. emergence and growth first and flower second
  7. perennials
    live longer than 2 years and some forever, can produce new plants by means other than seed
  8. plant pathogens(living agents) 4 types
    • fungi- single celled and multi cell organisms
    • bacteria- -microscopic single celled
    • nematodes - microscopic non segmented worms
    • viruses- require genetic material of host cell
  9. Action threshold
    the population level for a specific pest at which some control measure is justified in order to avoid economic loss of aesthetic damage
  10. 3 non-chemical control options:
    BioControl; Mechanical control; cultural control
  11. 4 major pesticide groups
    • herbicides;
    • insecticides;
    • fungicides;
    • rodenticides
  12. advantages to pesticide use:
    • effectiveness,
    • speed and ease of controlling pests,
    • reasonable cost,
    • may be only solution
  13. When in life cycle pests most easily controlled?
  14. Why some application sites more sensitive:
    may be sensitive individuals are there or environmentally sensitive
  15. pesticides may fail because:
    pesticide resistance evolves
  16. pesticide product 2 ingredients
    • active - chemicals control pest
    • inert - solvent AND CARRIERS TO DELIVER PRODUCT OR liquids into which the active ingredient is dissolved or chemicals that keep the product from separating
  17. the combination of an active ingredient with a compatible inert ingredient
  18. sorption
    when it is necessary to adhere a liquid active ingredient onto a solid surface(powder, dust, or granule)
  19. sorption can be accomplished by 2 possible mechanisms
    • adsorption - a chemical/physical attraction between the active ingredient and the surface of the solid
    • absorption - entry of the active ingredient into the pores of the solid
  20. solution
    when a substance (the solute) is dissolved in a liquid (the solvent).
Card Set:
2016-03-26 18:10:19
indiana coretest
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