What impact does soil erosion have on agricultural productivity?

• A. Reduces the soil’s nutrient content
• B. Increases soil salinity
• C. Improves crop yields
• D. Increases water retention

Answer: (A)

Soil erosion significantly impacts agricultural productivity by reducing the soil's nutrient content. When soil erosion occurs, the top layer of soil, which contains essential nutrients and organic matter vital for plant growth, is stripped away. This topsoil is where the majority of a crop’s nutrient uptake occurs, so its loss leads to a decline in soil fertility. As the nutrient-rich top layer is lost, crops may struggle to obtain the nutrients necessary for optimal growth, resulting in reduced crop yields. Sustaining agricultural practices requires maintaining soil health, and erosion is detrimental to that goal because it not only removes nutrients but can also alter soil structure and water retention capacity over time. This makes it challenging for farmers to produce healthy, robust crops and can lead to lower overall agricultural productivity in the long run.