Keeping land uncultivated for some time so as to replenish the lost nutrients is called

Options

A. crop rotation
B. multiple cropping
C. field fallow
D. intercropping.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term used to describe the practice of keeping land uncultivated for a period to restore its nutrients.

2. **Identifying Relevant Terms**: We need to consider agricultural practices that involve leaving land uncultivated. The options mentioned in the video include:
- Crop rotation
- Multiple cropping
- Field fallow
- Intercropping

3. **Analyzing Each Term**:
- **Crop Rotation**: This is the practice of growing different crops in succession on the same land to improve soil health and reduce pests.
- **Multiple Cropping**: This involves growing more than one crop in the same field during a single growing season.
- **Field Fallow**: This specifically refers to leaving a field uncultivated for a period to allow the soil to regain its fertility.
- **Intercropping**: This is the practice of growing two or more crops in proximity for various benefits.

4. **Determining the Correct Answer**: Among the options, "Field fallow" is the term that directly refers to keeping land uncultivated to replenish lost nutrients. This practice allows the soil to recover its fertility by letting natural processes occur.

5. **Final Answer**: The correct term for keeping land uncultivated for some time to replenish lost nutrients is **Field Fallow**.

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