CORE MANUAL ENVIRONMENT 07

1. Which property of a pesticide would make it
more likely to move in surface water runoff?

High solubility.
High adsorption.
High volatility.

2. Which statement about movement of pesticides
from the application site is true?

Drift is seldom an issue with indoor
applications.

Runoff and erosion are sources of surface
water contamination by pesticides.

Leaching is the main way that pesticides
move great distances.

3. Which is an example of nonpoint-source
contamination of groundwater?

Back-siphoning of pesticide spills at a
wellhead.

Leaching from a pesticide mixing area.

Pesticides that dissolve and leach through
soil after it rains.

4. Under which conditions are pesticides more
likely to leach through soil?

Heavy clay soil, high in organic matter.

Sandy soil, high in organic matter.

Sandy soil, low in organic matter.

5. Which best management practice will help prevent contamination of surface water and groundwater by pesticides?

Using pesticides that are highly water soluble.
Following IPM principles.
Selecting persistent pesticides.

6. Which two factors are most important in
avoiding vapor drift?

Droplet size and wind speed.
Air stability and temperature.
Temperature and pesticide volatility.

7. Which statement about sensitive areas is true?

Do not spray a larger target site if it
contains a sensitive area.

Pesticide labels may list special precautions
around sensitive areas.

Endangered species’ habitats are not
considered sensitive areas.

8. Which statement about protecting bees from
pesticide injury is true?

Use foliar applications when possible.
Spray crops when they are in bloom.
Apply insecticides in the evening or at
night.