Chemical Control Flashcards
Advantages of pesticides
Pest control
Predictable results
High ROI
Yield increases
Disadvantages of pesticides
Non target toxicity
Resistance
Drift
Residue
What is pest resurgence?
Pesticides kill pest AND natural enemies so pest comes back stronger
Pesticide treadmill
Keep applying pesticides even when it doesn’t do anything. Maste of money and leads to resistance
PMRA
Pest management regulatory agency
Responsible for pest regulation in Canada
Which type of pesticide is most used by US Ag?
What crop has most pesticides globally? In Ontario?
Herbicides
Fruit and veg globally
Corn and soybeans in Ontario
How has pesticide use changed over time globally?
Herbicide use increased
Insecticide / fungicide use decreased
Developing countries se 50% of insecticides
Developed countries use 90% of herbicides
Pesticide routes of entry
Oral - ingestion
Contact - through cuticle
Fumigant - inhalation
Types of modes of action
Growth regulators
Respiration targeters
Midgut target
Suffocants
Abrasives
What is translaminar movement?
Local systemicity
Pesticide goes from top to bottom of leaf
Common name
Trade name
Chemical name
- Active ingredient
- formulated version (roundup)
- tells you chemical structure
Spray application pros/cons
Pros
- easy
- targeted
Cons
- drift
- weather
- cost of equipment
Drenching pros
Systemic
No drift
Can be applied through irrigation
Injection application
Good for wood pests like emerald ash borer
Seed treatment pros/cons
Pros
- easy
- Effective
- safe
Cons
- resistance
- short lived
