Question

2. Differentiate between fertilizers and manures. 3. Describe the role of nitrogen fixation in agriculture.​

Answer 1

Explanation:

2. Manure is an organic substance that is obtained from decomposition of vegetables and animal waste. Fertilizers are inorganic substances manufactured in factories. Manures are relatively less rich in plant nutrients, they only remove general deficiency of soil.

3.The role of nitrogen-fixing bacteria is to supply plants with the vital nutrient that they cannot obtain from the air themselves. Nitrogen-fixing microorganisms do what crops can't – get assimilative N for them. Bacteria take it from the air as a gas and release it to the soil, primarily as ammonia.