Organic farming does not include

Options

A. green manures
B. chemical fertilisers
C. farmyard manures
D. compost

Explanation

### Step-by-Step Solution:

1. **Understanding Organic Farming**: Organic farming is an agricultural practice that emphasizes the use of natural substances and processes to cultivate crops. It avoids synthetic chemicals and fertilizers.

2. **Identifying the Options**: The question provides four options:
- Green manures
- Chemical fertilizers
- Farmyard manures
- Compost

3. **Analyzing Each Option**:
- **Green Manures**: These are fast-growing plants that are ploughed back into the soil to enhance its fertility. They are a part of organic farming as they improve soil health without synthetic inputs.
- **Chemical Fertilizers**: These are synthetic substances used to enhance plant growth and yield. They are not permitted in organic farming due to their artificial nature and potential harm to the environment.
- **Farmyard Manures**: This consists of decomposed animal waste (like cow dung) and is used to enrich the soil. It is a natural fertilizer and is commonly used in organic farming.
- **Compost**: This is made from decomposed organic matter, such as plant leaves and stems. Compost is also a natural fertilizer and is widely used in organic farming.

4. **Conclusion**: Since organic farming does not include synthetic inputs, the correct answer is **Chemical Fertilizers**.

### Final Answer:
Organic farming does not include **Chemical Fertilizers**.

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