Disease and causal organism of Bengal famine of 1943 was

Options

A. Brow leaf spot of Rice by H. oryzae
B. Wheat Rust by Puccinia
C. Blast of Rice by Pyricularia oryzae
D. Blast of Rice by X. oryzae.

Answer

**Step-by-Step Solution:**

1. **Identify the Disease Related to the Bengal Famine of 1943:**
- The disease that caused significant crop failure during the Bengal famine of 1943 is known as **Brown Leaf Spot** on rice.

2. **Determine the Causal Organism:**
- The causal organism responsible for the Brown Leaf Spot disease is a fungus named **Helminthosporium oryzae**.

3. **Understand the Impact of the Disease:**
- The Brown Leaf Spot disease took an epidemic form during the years **1942 to 1943**, which significantly contributed to the famine in Bengal.

4. **Conclude the Answer:**
- Therefore, the disease associated with the Bengal famine of 1943 is **Brown Leaf Spot** and the causal organism is **Helminthosporium oryzae**.

**Final Answer:**
- Disease: Brown Leaf Spot on rice
- Causal Organism: Helminthosporium oryzae

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