Chapter 12 Flashcards
What is the impact of pesticide resistance on pest management?
The pesticide will become less effectives. In time it can be impractical or even impossible to get adequate control with a pesticide
How can pesticide resistance arise in pest populations?
There a likely a small number of pests in a population that have a mutation that makes them resistant to a pesticide. These individuals survive when we apply and some of their offspring inherit the resistance. With each use of pesticide the percentage increase and eventually most of the population will be resistant
Four Mechanisms of Pesticide resistance
Reduce uptake - reduces the amount of absorption or penetration of pesticide
Metabolic resistance - increase in pests ability to metabolize a pesticide fast enough so that it doesn’t harm them
Target site insensitivity- specific organic or system is less susceptible
Behavioral change - a pest that behaves in a way that makes them avoid contact with a pesticide
factors that influence the development of pesticide resistance in a pest population?
The proportion of resistant individuals in the current population
the proportion of the population exposed to the pesticide - the higher the portion the faster resistant is likely
The length of the pests life cycle - increase more rapidly in pests with short life cycle
The diversity of the pesticides you use
The mode of action
the pesticide persistence and frequency of use
What are the 4 practices that are the foundation of resistance management?
Use an integrated pest management program
Use pesticides only when needed
apply pesticides at the labeled rate
rotate pesticides with different modes of action
Where can you find resistance management information on a pesticide label
The resistance group number is on the front panel of the pesticide label. Additional information can be found under the heading resistance management in the general information portion of the directions for use section
How should you interpret and use resistance management information
You can easily select a pesticide which has a different mode of action the next time you treat a site
