Chapter 6 Environmental Safety

Question 1

What is Adsorption?

Answer 1

Binding of pesticide to soil particles. Soil texture influences the amount of adsorption which occur.

Question 2

What is leaching?

Answer 2

Water movement through the soil may transfer soluble pesticides away from the site of application.

Question 3

What is Volatilization?

Answer 3

When solids or liquids are converted into gas. They may then move in the atmosphere. May lead to vapour drift that could cause off target injury

Question 4

What is Microbial Degradation?

Answer 4

Breakdown of pesticides by microorganisms such as fungi or bacteria that uses pesticides as an energy source.

Question 5

What is Chemical Degradation?

Answer 5

breakdown of pesticides results from processes that do not involve living organisms.

Question 6

What is Photodegradation?

Answer 6

Pesticides are broken down by the presence of light.

Question 7

What is point source contamination?

Answer 7

When large amounts of product is released in a small area. It is an identifiable source of contamination.

Question 8

What is Non point source contamination?

Answer 8

When an contaminant is released over a large area. EX. Runoff. The source is not easily identified.