Which one of the following is not a fungal disease ?

Options

A. Rust of wheat
B. Smut of Bajra
C. Black rot of crucifers
D. Red rot of sugarcane

Explanation

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

1. **Rust of Wheat**:
- Causative Agent: Puccinia triticina
- Classification: This organism is a fungus.
- Conclusion: Rust of wheat is a fungal disease.

2. **Smut of Bajra**:
- Causative Agent: Ustilago (previously known as Tolypocladium) penicillariae
- Classification: This organism is also a fungus.
- Conclusion: Smut of bajra is a fungal disease.

3. **Black Rot of Cruciferous**:
- Causative Agent: Xanthomonas campestris
- Classification: This organism is a bacterium.
- Conclusion: Black rot of cruciferous is not a fungal disease; it is a bacterial disease.

4. **Red Rot of Sugarcane**:
- Causative Agent: Colletotrichum falcatum
- Classification: This organism is a fungus.
- Conclusion: Red rot of sugarcane is a fungal disease.

After analyzing all the options, we find that the correct answer to the question "Which one of the following is not a fungal disease?" is:

**Final Answer: Black rot of cruciferous (Option C)**

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