Prolonged water logging in an agricultural fields is likely to create the problem of

Options

A. Poor aeration and low salinity
B. Poor aeration and high salinity
C. Poor aeration and high acidity
D. Metal toxicity and proper aeration

Answer

**Step-by-Step Solution:**

1. **Understanding Water Logging**: Water logging refers to the saturation of soil with water, which can occur due to excessive rainfall or poor drainage in agricultural fields. This condition leads to the accumulation of water above the normal level.

2. **Impact on Plant Roots**: When the soil is waterlogged, the air spaces in the soil are filled with water, which reduces the availability of oxygen to plant roots. Plants require oxygen for respiration, and without it, they cannot function properly.

3. **Poor Aeration**: The lack of oxygen in waterlogged conditions leads to poor aeration. This is detrimental to plant health as roots begin to suffocate, leading to reduced growth and potential plant death.

4. **High Salinity**: Water logging can also lead to an increase in salinity levels in the soil. When excess water accumulates, it can cause the leaching of salts from deeper soil layers to the surface, resulting in high salinity. High salinity can inhibit the plant's ability to absorb water and nutrients effectively.

5. **Elimination of Other Options**:
- **Low Salinity**: This is incorrect as water logging typically increases salinity, not decreases it.
- **High Acidity**: While waterlogged soils can become acidic over time, the immediate effect of water logging is not high acidity.
- **Metal Toxicity**: This is not directly associated with water logging.
- **Proper Aeration**: This is also incorrect since water logging leads to poor aeration.

6. **Conclusion**: The main problems caused by prolonged water logging in agricultural fields are poor aeration and high salinity.

**Final Answer**: Prolonged water logging in agricultural fields is likely to create the problem of poor aeration and high salinity.

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