How effective is mulch (hay or straw) in reducing erosion according to recommendations?

Mulch, such as hay or straw, plays a significant role in erosion control, particularly in protecting the soil from the impacts of rainfall and runoff. When applied effectively, mulch can reduce erosion by as much as 98%. This high level of effectiveness is attributed to several factors.

Firstly, mulch provides a protective layer that absorbs the energy of raindrops, reducing the potential for soil displacement which is a primary cause of erosion. Secondly, it helps in retaining moisture in the soil, thereby promoting vegetation growth. Vegetation, in turn, contributes to soil stability through root systems, reducing the likelihood of erosion.

Additionally, mulch can mitigate surface water runoff by allowing more water to infiltrate into the ground, which decreases the speed and volume of water that could carry soil particles away. This is particularly important in areas susceptible to erosion.

The effective use of mulch as an erosion control measure aligns with best management practices in stormwater management and contributes significantly to maintaining soil integrity and preventing sediment from entering waterways.