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Pesticides and Pest Control

Pesticides and Pest Control

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Pesticides and Pest Control

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  1. Pesticides and Pest Control By Brian Kaestner with thanks to Miller and Clements

  2. What is a pesticide? What are the different types of pesticides? • Broad-spectrum agents • Narrow-spectrum agents • Target species • Nontarget species

  3. In your groups come up with 3 characteristics of a ideal pesticide.

  4. Characteristics of an Ideal Pesticide? • Kill only target pests • Harm no other species • Break down quickly • Not cause genetic resistance • Be more cost-effective than doing nothing

  5. Add to your list…Present a case for using pesticides

  6. The Case for Pesticides • Save human lives • Increase supplies and lower cost of food • Work better and faster than alternatives • Health risks may be insignificant compared to benefits • Newer pesticides are becoming safer • New pesticides are used at lower rates

  7. Now come up with a list against pesticides

  8. The Case Against Pesticides • Genetic resistance • Can kill nontarget/natural control species • Can cause an increase in other pest species • pesticide treadmill • Pesticides do not stay • Bioaccumulation/biomagnification • Potential human health threats

  9. Pesticide Regulation in the United States ? • Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) 1947 • Food Quality Protection Act (FQPA) • 1996

  10. What is IPM ? • Ecological system approach • Reduce pest populations to economic threshold • Field monitoring of pest populations • Use of biological agents • Chemical pesticides are last resort

  11. Effects of IPM Original pest population Introduction biological control Economic threshold Pest density Equilibrium position Equilibrium position Reduced pest population Time