The top layer of soil gets washed away due to heavy rains. Why is it important to save it?
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After a heavy rainfall, soil starts to spread out; soil structure is lost. Erosion depletes nutrient supplies or macronutrients like nitrogen, potassium, calcium, magnesium, and sulfur. This changes the soil content, soil texture at the surface, water-holding capacity, and pH levels.
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The top 18 cm of soil is most importantfrom the point of plant growth. If the top soil is washed away by erosion, the water holding capacity of the soil is decreased and productivity goes down.
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