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 need to analyze each option provided and determine which one is not a problem linked to intensive irrigation practices.

### Step-by-Step Solution:

1. **Understand Intensive Irrigation**:
- Intensive irrigation refers to the practice of supplying water to crops in a controlled manner to enhance crop yield. While beneficial, it can lead to several environmental issues.

2. **Evaluate Each Option**:
- **Mineral Runoff**: This occurs when excess water causes the leaching of minerals from the soil into water bodies. This is a known problem associated with intensive irrigation.
- **Aquifer Depletion**: This refers to the reduction of groundwater levels due to excessive extraction for irrigation. It is indeed a problem linked to intensive irrigation practices.
- **Over Fertilization**: This is the application of fertilizers in excessive amounts, which can lead to nutrient runoff but is not directly a problem caused by intensive irrigation itself. It is more related to the use of fertilizers rather than the irrigation method.
- **Soil Salinization**: This is the accumulation of salts in the soil, which can occur due to excessive irrigation, especially in arid regions where evaporation rates are high. This is a recognized problem of intensive irrigation.

3. **Identify the Correct Answer**:
- After evaluating all options, it is clear that **over fertilization** is not a direct problem associated with intensive irrigation, making it the correct answer to the question.

### Final Answer:
The correct option is **over fertilization**.