All the following variety are not resistant to the curl blight black rot disease, except:

Options

A. Pusa Sawani
B. Pusa Swarnim
C. Pusa Shubhra
D. Himgiri

Answer

To solve the question regarding which variety is resistant to curl blight black rot disease, we will analyze each option provided:

1. **Pusaswani**: This variety is known to be a type of okra. It is primarily recognized for its resistance to shoot and fruit borer insect pests, but there is no indication that it is resistant to curl blight black rot disease. Therefore, this option is not correct.

2. **Pusaswarnim**: This variety is a type of Brassica and is known for its resistance to white rust disease. However, there is no evidence suggesting that it is resistant to curl blight black rot disease. Thus, this option is also not correct.

3. **Pusashubra**: This variety is a cauliflower type that is specifically noted for its resistance to black rot and curl blight black rot disease. Therefore, this option is correct as it is resistant to the disease mentioned in the question.

4. **Hemgiri**: This variety is a type of wheat that is recognized for its resistance to leaf and stripe rust diseases. There is no mention of its resistance to curl blight black rot disease, making this option incorrect as well.

After analyzing all the options, the correct answer is **Pusashubra**, as it is the only variety that is resistant to curl blight black rot disease.

### Step-by-Step Solution:
1. Identify the varieties listed in the question.
2. Research the resistance of each variety to curl blight black rot disease.
3. Analyze the characteristics of each variety:
- Pusaswani: Resistant to shoot and fruit borer, not to curl blight.
- Pusaswarnim: Resistant to white rust, not to curl blight.
- Pusashubra: Resistant to black rot and curl blight black rot.
- Hemgiri: Resistant to leaf and stripe rust, not to curl blight.
4. Conclude that **Pusashubra** is the only variety that is resistant to curl blight black rot disease.