Which are used as green manure

Options

A. Melilotus parviflora
B. Lens esculenta
C. Crotalaria juncea
D. All the above

Answer

**Step-by-Step Solution:**

1. **Understanding Green Manure:**
- Green manure refers to specific plants that are grown and then uprooted to enhance the nutritional quality of the soil. These plants are typically cultivated during the fallow period between two main crops.

2. **Purpose of Green Manure:**
- The primary purpose of using green manure is to restore and improve the soil's nutrient content, which may have been depleted by previous crops. This helps in preparing the soil for the next planting season.

3. **Identifying the Options:**
- The question provides four options:
- Option 1: Marilotus parviflora
- Option 2: Lens esculenta
- Option 3: Craterlaria zuncia
- Option 4: All of the above

4. **Evaluating Each Option:**
- **Marilotus parviflora:** This plant is known to be used as a green manure.
- **Lens esculenta:** Commonly known as lentils, this plant can also be utilized as green manure.
- **Craterlaria zuncia:** This plant is also recognized for its use in green manure practices.

5. **Conclusion:**
- Since all the listed plants (Marilotus parviflora, Lens esculenta, and Craterlaria zuncia) can be used as green manure, the correct answer is:
- **Option 4: All of the above.**

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