On what type of land use is contouring typically not recommended?

Contouring is a soil conservation practice that involves plowing and planting across the slope of the land, following its natural contours. This technique is highly effective in reducing soil erosion and managing water runoff. In the context of land use, there are certain situations where contouring is less beneficial or not recommended.

In the case of sod, this type of land is typically well-established grassland with a dense root system. The roots of the grass help to hold the soil in place and prevent erosion. Additionally, contouring may disturb the existing vegetation and root structure, which can lead to soil erosion and degradation instead of preventing it. The existing sod layer already provides an effective means of protecting the soil, making contouring unnecessary and potentially harmful.

In contrast, on cultivated land, sandy soil, or clay-rich soil, contouring can provide significant benefits. Cultivated land often has less vegetation to protect the soil, making contouring useful for erosion control. Sandy soils are typically more prone to erosion due to their loose texture, so contouring helps slow water runoff and retain moisture. Similarly, clay-rich soils can benefit from contouring, as this method can help manage water drainage and erosion effectively.

Thus, the correct choice highlights the context in which contouring