Organic farming

Q.

What is the role of microorganisms in soil fertility?

Q.

How do microbes help in agriculture?

Q.

What is the role of soil microbiology in agricultural development?

Q.

State the role of microorganisms in increasing soil fertility.

Q. Identify the alternatives to chemical pesticides that are used in organic farming.

1. Vegetable wastes
2. Animal manure
3. Pest predators
4. Pest traps

Q. How does the technique of crop rotation sustain the environment?

1. It prevents soil erosion.
2. It preserves soil composition.
3. It preserves underground water.
4. It prevents water depletion.

Q. Crop rotation between a heavy nitrogen-using plant like corn and a nitrogen-depositing plant like soya bean helps in preserving .

1. soil composition
2. plant nutrients
3. cleanliness of air
4. salinity of water

Q. Identify a few soil microorganisms that are used in organic farming.

1. Rhizobium
2. Lactobacter
3. Azotobacter
4. Chlorobium

Q. Identify the techniques/materials used by organic farmers.

1. Organic compost
2. Crop rotation
3. Manure
4. Chemical
   fertiliser
5. Multi cropping
6. Pesticides
7. Biological pest
   control
8. Insecticides

Q. If you were an organic farmer, identify the shortcomings that you would have to overcome.

1. Production of crops may take longer as they have to grow.
2. Reduction in groundwater pollution.
3. Lack of chemicals in food crops.
4. Production of crops may be of lesser quantity than the demand.