Which of the following plants are used as green manure in crop fields and in sandy soils

Options

A. Crotolaria juncea and Alhagi camelorum
B. Calotropis procera and Phyllanthus niruri
C. Saccharum munja and Lantana camara
D. Dichanthium annulatum and Azolla nilotica

Answer

**Step-by-Step Solution:**

1. **Understanding Green Manure**:
- Green manure refers to specific plants or crop varieties that are grown and then turned into the soil to improve soil quality and fertility.

2. **Identifying the Options**:
- The question provides three sets of plant options:
1. Amchia, Nadaghi, Candelaria
2. Calicropis, Proserra, Philanthus, Nirodi
3. Centurum, Munza, Lantana Camara

3. **Researching Each Option**:
- We need to determine which of these plants are recognized as green manure.
- The plants commonly used as green manure are typically from the Fabaceae family (legumes), which have the ability to fix nitrogen in the soil.

4. **Identifying the Correct Plants**:
- The plants that are specifically mentioned as green manure in the transcript are:
- **Frutilaria xanthia** (common name: Sun hemp)
- **Alagi Camelorium**

5. **Conclusion**:
- The correct answer to the question is the first option, which includes Frutilaria xanthia and Alagi Camelorium, as they are used as green manure in crop fields and sandy soils.

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