Question

What are biofertilizers? Give examples. Why are biofertilizers better than other fertilizers?

Answer 1

Biofertilizers are substances that contain living microorganisms, when applied to plants promote growth by increasing primary nutrients to the host plant.
Examples:

1. Rhizobium
2. Azospirillum
3. Azotobacter 
4. Mycorrhizae
5. Azolla

Advantages of Biofertiser over chemical fertilizers:

1. Biofertilizers are environmentally friendly fertilizers.
2. They enrich the nutrient quality of the soil.
3. They sustain soil health.
4. They improve the texture, structure, and water-holding capacity of the soil.
5. No adverse effect on plant growth and soil fertility.