• Like

Loading…

Flash Player 9 (or above) is needed to view presentations.
We have detected that you do not have it on your computer. To install it, go here.

Pesticides history

  • 1,315 views
Uploaded on

 

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to like this
No Downloads

Views

Total Views
1,315
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
48
Comments
1
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Pesticides
  • 2. What is a Pest?
    • A. Latin for plague - refers to any troublesome, destructive or annoying organism        
  • 3. What is a Pest?
    •       i.  Insects - mosquitoes, grasshoppers, boll weevils
    •      ii.  Fungi - Irish potato crop famine
    •      iii. Viruses - microorganisms
  • 4.
    • B. Not all are Pests
        • i. Only 1 out of 8 insects are classified as pests
    •       ii.  Penicillin, antibiotics, cheese, bread, and wine all come from fungi
    What is a Pest?
  • 5. Pesticides Past to Present
    • A.    Pesticides - chemicals that kill insects, fungi, nematodes, and weeds
  • 6. Pesticides Past to Present
    •       i.  Avicides - bird killers
    •      ii.  Insecticides - insect killers
    •     iii.  Fungicides - fungus killers
    •     iv.  Nematocides - nematodes (round worm) killers
    • v. Herbicides - plant killers
  • 7. Pesticides Past to Present
    • B.  First pesticides
    • i. Naturally occurring minerals (arsenic, copper, lead mercury, sulfur, and zinc)
  • 8. Pesticides Past to Present
    • ii.  Natural chemicals produced by plants
    • a. expensive and not effective
  • 9. Pesticides Past to Present
    • C.  Man Made chemicals were used during WW II
      • i. Insects were used to test chemicals (nerve gases) instead of humans
  • 10. Pesticides Past to Present
    • D.   Federal Insecticide, Fungicide and Rodenticide (FIFR) Act of 1947
  • 11. Pesticides Past to Present
    •        i.  Originally tested for short-term effects
    •       ii.   Amended to test for long term effects in 1972
    • iii. By 1970 most chlorinated hydrocarbons were banned in the US
  • 12. Pesticides Past to Present
    • E. Food Quality Protection Act (FQPA) of 1996
    •   EPA regulates all pesticides based on human health issues and FDA monitors pesticide levels in food.
  • 13. 2 Major Groups of Pesticides
    • A. Chlorinated Hydrocarbons
    •     i.  Most prevalent insecticide (kills so many different insects)
    •    ii.  Cheap and easy to use
    •    iii. Not very toxic to humans in small amounts
  • 14. 2 Major Groups of Pesticides
    • iv. Best known: dichloro-diphenyl-trichloro-ethane (DDT)
    •       a. Banned in the US in 1972 - found in human tissue
    • - killing birds
    •     b. Still in production and widely
    • used in other countries to kill
    • insects that cause diseases
  • 15. 2 Major Groups of Pesticides
    • B.  Organic Phosphates
    •         i.   Mainly used in insecticides
    • ex. Durasban