Whiptail disease is caused due to the deficiency of …………………………

Explanation

**Step-by-Step Solution:**

1. **Understanding Whiptail Disease**: Whiptail disease is a condition that affects plants, particularly young ones, and is characterized by specific symptoms that arise due to nutrient deficiencies.

2. **Identifying the Nutrient Deficiency**: The disease is specifically linked to a deficiency in a particular mineral. In this case, we need to identify which mineral is responsible for causing whiptail disease.

3. **Recognizing Symptoms**: The symptoms of whiptail disease include chlorosis (yellowing of leaves) and improper development of leaf margins and blades. In severe cases, only the midrib of the leaf may develop, while the rest of the leaf degenerates.

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