Which one the following is not a fungal disease ?

Options

A. Rust of wheat
B. Smut of bajra
C. Black rot of Cauliflower
D. Blight of Cowpea

Answer

To determine which of the following is not a fungal disease, we will analyze each option provided.

### Step 1: Evaluate the first option - Rust of Wheat
- Rust of wheat is a well-known fungal disease caused by the fungus Puccinia. It affects wheat, barley, and other cereal crops.
- **Conclusion**: This is a fungal disease.

### Step 2: Evaluate the second option - Smut of Bajra
- Smut of Bajra is caused by the fungus Ustilago. It affects Bajra (pearl millet) and is characterized by the formation of dark, powdery spores.
- **Conclusion**: This is also a fungal disease.

### Step 3: Evaluate the third option - Black Rot of Cauliflower
- Black rot of cauliflower is caused by the bacterium Xanthomonas campestris. It leads to yellowing and wilting of leaves and is not caused by a fungus.
- **Conclusion**: This is NOT a fungal disease; it is a bacterial disease.

### Step 4: Evaluate the fourth option - Blight of Cow Pea
- Blight of cow pea is caused by various fungal pathogens, including species of the genus Colletotrichum. It leads to wilting and decay of the plant.
- **Conclusion**: This is a fungal disease.

### Final Answer:
Based on the evaluations, the option that is NOT a fungal disease is **Black Rot of Cauliflower** (Option 3).

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