Which of the following is NOT a method of soil conservation?

Exhausting nutrient levels is not a method of soil conservation because it refers to the depletion of essential nutrients in the soil, which can lead to diminished soil fertility and health. Soil conservation focuses on practices that maintain or enhance the quality and productivity of the soil rather than depleting it.

In contrast, no-till farming, cover cropping, and conservation tillage are all practices designed to protect and sustain soil health. No-till farming minimizes soil disturbance, which helps maintain soil structure and reduces erosion. Cover cropping involves planting crops that can help protect the soil, improve its structure, and enhance nutrient content when the main crops are not growing. Conservation tillage reduces the amount of soil disturbance compared to conventional tillage practices, thereby helping to prevent erosion and nutrient loss.

Therefore, choosing practices that conserve and enhance soil quality is essential, while exhausting nutrients clearly undermines these goals.