Some of the problems associated with intensive irrigation include all but

Options

A. mineral runoff
B. aquifer depletion
C. overfertilization
D. soil salinization

Answer

To solve the question regarding the problems associated with intensive irrigation, we will analyze the options provided and identify which one does not belong to the list of problems.

### Step-by-Step Solution:

1. **Understand Intensive Irrigation**:
- Intensive irrigation involves applying a large amount of water to agricultural lands to enhance crop yield. However, this practice can lead to several environmental and agricultural issues.

2. **Identify Common Problems of Intensive Irrigation**:
- **Mineral Runoff**: Excess water can wash away essential minerals from the soil, leading to nutrient depletion.
- **Aquifer Depletion**: Overuse of water resources can lead to the depletion of underground aquifers, which are crucial for maintaining soil structure and moisture.
- **Soil Salinization**: Continuous irrigation can lead to the accumulation of salts in the soil, which can harm plant growth.

3. **Evaluate the Options**:
- Option 1: Mineral runoff - This is a problem associated with intensive irrigation.
- Option 2: Aquifer depletion - This is also a problem associated with intensive irrigation.
- Option 3: Over fertilization - This is not a problem associated with intensive irrigation as it refers to the excessive application of fertilizers, which is not a direct consequence of intensive irrigation practices.
- Option 4: Soil salinization - This is a problem associated with intensive irrigation.

4. **Select the Correct Answer**:
- Since over fertilization does not directly relate to the issues caused by intensive irrigation, the correct answer is **Option 3: Over Fertilization**.

### Final Answer:
The option that is not a problem associated with intensive irrigation is **Option 3: Over Fertilization**.