Question

What is meant by 'Crop removal' in the context of pesticide fate?

1. Crop removal refers to the transfer of pesticides and their breakdown products away from the treatment site with harvested crops.
2. Crop removal describes the degradation of pesticides within the plant.
3. Crop removal is the process of pesticides leaching into the soil.
4. Crop removal involves the volatilization of pesticides from the plant surface.

• A. ഒന്നും മൂന്നും
• B. ഇവയൊന്നുമല്ല
• C. ഒന്ന് മാത്രം
• D. മൂന്നും നാലും

Answer 1

Answer:

C. ഒന്ന് മാത്രം

• Transfer of pesticides and their break down products from the treatment site is called - Crop removal

• Adsorption - In the soil environment, the pesticides may get adsorbed to the organic matter, clay minerals and soil particles and remains unavailable to plants.

• Degradation - Pesticide degradation can occur either through chemical degradation, photo-degradation or microbial degradation.

• Bioaccumulation - Bioaccumulation refers to pesticide accumulation in various tissues of a living organism in concentration much higher than the surrounding environment.

• Bioaccumulation encompasses bioconcentration and biomagnification.