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 health issues in crops that are grown in reclaimed land, which is land that has been rehabilitated for agricultural use after being previously degraded or contaminated.

2. **Identifying Affected Crops**:
- This disease primarily affects cereals and legumes, which are staple crops in many agricultural systems.

3. **Determining the Cause**:
- The disease is linked to nutrient deficiencies in the soil. Specifically, it is caused by a lack of essential micronutrients that are crucial for plant health.

4. **Identifying the Deficient Nutrient**:
- Among the nutrients, copper is identified as the critical element whose deficiency leads to reclamation disease in these crops.

5. **Evaluating the Options**:
- The options provided are:
- A) Manganese
- B) Phosphorus
- C) Copper
- D) Boron
- Upon evaluation, only copper is recognized as the nutrient whose deficiency causes reclamation disease.

6. **Conclusion**:
- Therefore, the answer to the question is that reclamation disease of cereals and legumes is caused by the deficiency of **copper**.

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

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