Which green house gas other than methaneis being produced by agricultural fields ?

Options

A. ammonia
B. sulphur dioxide
C. nitrous oxide
D. Carbon monoxide

Answer

### Step-by-Step Solution:

1. **Identify Greenhouse Gases**: Start by listing the common greenhouse gases. The main ones include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), chlorofluorocarbons (CFCs), ozone (O3), and water vapor.

2. **Examine the Question**: The question specifically asks for a greenhouse gas produced by agricultural fields, excluding methane.

3. **Review the Options**: The options provided are ammonia, sulfur dioxide, nitrous oxide, and carbon monoxide.

4. **Eliminate Incorrect Options**:
- Ammonia is not classified as a greenhouse gas.
- Sulfur dioxide is primarily a pollutant and not a greenhouse gas.
- Carbon monoxide is also not considered a greenhouse gas.

5. **Identify the Correct Answer**: The only greenhouse gas among the options is nitrous oxide (N2O).

6. **Explain the Production of Nitrous Oxide**:
- Nitrous oxide is produced through various agricultural practices, including:
- The breakdown of nitrogenous fertilizers in the soil.
- Livestock waste.
- Conditions in rice fields that are waterlogged and poorly aerated, where denitrifying bacteria convert nitrogen compounds into nitrous oxide.

7. **Conclusion**: Therefore, the greenhouse gas produced by agricultural fields, other than methane, is nitrous oxide.

### Final Answer:
**Nitrous oxide (N2O)**

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