What is the primary role of seed mixes and mulch in erosion control?

What is the primary role of seed mixes and mulch in erosion control?

• A. They are primarily decorative and have no erosion impact.
• B. They increase the speed of erosion.
• C. They promote quick ground cover, reduce splash erosion, and protect soils from rainfall impact.
• D. They replace the need for any other erosion controls.

Answer: (C)

Ground cover from seed mixes and mulch protects soil by creating a protective layer that intercepts raindrop impact and shields the soil from the energy of rainfall. This reduces splash erosion, which is the detachment of soil particles caused by the force of striking water, and helps water runoff spread more slowly and infiltrate better. Establishing quick ground cover with seeds and mulch also stabilizes the surface as roots develop and mulch binds soil particles, making the area more resistant to erosion in both the short term and during subsequent storms. These practices are used to begin and sustain vegetation cover and soil stabilization, rather than being purely decorative or replacing all other erosion controls.

Ground cover from seed mixes and mulch protects soil by creating a protective layer that intercepts raindrop impact and shields the soil from the energy of rainfall. This reduces splash erosion, which is the detachment of soil particles caused by the force of striking water, and helps water runoff spread more slowly and infiltrate better. Establishing quick ground cover with seeds and mulch also stabilizes the surface as roots develop and mulch binds soil particles, making the area more resistant to erosion in both the short term and during subsequent storms. These practices are used to begin and sustain vegetation cover and soil stabilization, rather than being purely decorative or replacing all other erosion controls.