Correct Option: D  [ chemical fertilizers are not used ]
Remark:
In organic farming, chemical fertilizers are not used. Instead, farmers rely on natural manures, compost, and biofertilizers to enrich the soil. Organic farming avoids synthetic pesticides and focuses on maintaining ecological balance, soil fertility, and sustainable crop production.
- Intercropping: Often used to increase productivity naturally.
- Manures: Essential in organic farming for soil health.
- Biofertilizers: Widely used to promote natural nutrient availability.