Question

Distinguish between organic manures and chemical fertilizers.

Answer 1

1. Organic manures.

• organic manures supply both nutrient and humus to the soil.
• may not provide all the nutrients on required quantity.
• farmers cannot choose according to their requirements.
• Bind loose soil increase their water holding capacity, aeration which improves merebial activity.
• Do not cause soil or water pollution.

2. Chemical fertilizers

• The chemical fertilizers supply only nutrients to the soil.
• It provide all the nutrient in specific ration readily usable form.
• Farmers can choose according to their requirement.
• Have the tendency to accumulate and alter the soil characteristic which harm soil fauna.
• Cause soil and water pollution.