Chapter 7 Pesticides In The Environment

Question 1

How to prevent pesticide drift

Answer 1

• can avoid most spray drift problems by paying close attention to spray droplet size, wind direction and wind speed
• Thickness of the liquid also affect droplet size
  ~ thickness increase so does droplet size thus reducing the chance of off-target movement
• Spraying when wind speed is between 3 to 10 mph
• Spraying downwind form sensitive areas
• Using proper nozzles and pressures
• Using drift control additive (if appropriate)
• Lowering boom height
• leaving an untreated border or buffer area in the downwind target area

Question 2

How to prevent runoff

Answer 2

• use IPM principles
• Identify vulnerable area
• do not mix and load near water
• Keep pesticides away from wells
• Select products wisely
• Time pesticide applications according to the weather forecast

Question 3

Identify sensitive areas that could be harmful by pesticides

Answer 3

• habitats of endangered species
• Areas where domestic animals and livestock are kept
• School grounds, playgrounds and recreational areas