Fill in the following blanks with suitable words :
Crop rotation help in the replenishment fo soil with ………………….

Explanation

**Step-by-Step Solution:**

1. **Understanding Crop Rotation**: Crop rotation is an agricultural practice where different types of crops are grown in the same area in sequential seasons. This method helps in maintaining soil fertility and health.

2. **Identifying Nutrient Replenishment**: The question asks what crop rotation helps replenish in the soil. It is important to consider which nutrients are often depleted by certain crops.

3. **Role of Leguminous Crops**: Leguminous crops, such as peas or beans, are known for their ability to fix atmospheric nitrogen into the soil. This is done through a symbiotic relationship with bacteria called Rhizobium, which forms nodules on the roots of these plants.

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