Question

Which of the following processes describes the movement of pesticides from the plant surface, water, or soil into the air?

1. Volatilization is the process where pesticides move from plants, water, or soil into the air.
2. Absorption is the term for pesticides moving into the air.
3. Leaching describes the transfer of pesticides to the atmosphere.
4. Runoff is responsible for pesticides entering the air.

• A. None of these
• B. i only
• C. i, ii
• D. i, iii

Answer 1

Answer:

B. i only

• Transfer of pesticides either from plants surface, water or soil to air - Volatilization

• Volatilization depends on the vapour pressure of the pesticide compounds.

• The pesticides maybe carried to long distances as particles as they get adsorbed onto the dust particles.

• Physical transport of pesticides over the ground surface by rainwater - Runoff