Which one of the following is not a method of soil conservation

Options

A. Mulching
B. Overgrazing
C. Strip cropping
D. Crop rotation

Explanation

To determine which option is not a method of soil conservation, we need to analyze each option provided:

1. **Mulching**: This is a method where organic or inorganic materials are placed on the soil surface to retain moisture, suppress weeds, and prevent soil erosion. It is indeed a recognized method of soil conservation.

2. **Overgrazing**: This occurs when livestock graze on vegetation excessively, leading to the depletion of plant cover and resulting in soil erosion and degradation. Overgrazing is not a method of soil conservation; in fact, it is detrimental to soil health.

3. **Striped cropping**: This method involves alternating strips of different crops to enhance soil fertility and reduce erosion. It is a recognized method of soil conservation.

4. **Crop rotation**: This is the practice of growing different types of crops in the same area across a sequence of seasons. It helps in maintaining soil fertility and preventing soil erosion, making it a valid method of soil conservation.

From the analysis above, the answer to the question is:

**Overgrazing is not a method of soil conservation.**

### Steps:
1. Identify the options given in the question.
2. Analyze each option to determine if it is a method of soil conservation.
3. Conclude which option does not belong to the methods of soil conservation.