Reclamation disease of cereals and legumes is caused by the deficiency of

Options

A. manganese
B. phosphorus
C. copper
D. boron

Answer

### Step-by-Step Solution:

1. **Understanding Reclamation Disease**:
- Reclamation disease refers to a condition in plants, particularly cereals and legumes, characterized by yellowing of leaves and stunted growth. This condition can be caused by nutrient deficiencies.

2. **Identifying the Nutrient Deficiencies**:
- The disease is linked to deficiencies in specific minerals. In this case, the options provided are manganese, phosphorus, copper, and boron.

3. **Analyzing the Options**:
- **Manganese**: While manganese deficiency can cause various symptoms in plants, it is not specifically known for causing reclamation disease.
- **Phosphorus**: Phosphorus deficiency typically leads to dark green or purplish leaves but is not directly associated with reclamation disease.
- **Copper**: Copper deficiency is known to cause yellowing of leaves and can lead to reclamation disease.
- **Boron**: Boron is essential for plant growth, but its deficiency does not specifically cause reclamation disease.

4. **Conclusion**:
- Based on the analysis, the deficiency that causes reclamation disease in cereals and legumes is **Copper**.

### Final Answer:
- The reclamation disease of cereals and legumes is caused by the deficiency of **Copper**.