What is a key feature of general mulch installation?

A key feature of general mulch installation involves the practice of anchoring loose hay or straw using tackifier or netting. This step is crucial in preventing erosion and controlling sediment by ensuring that the mulch remains in place, especially during rainfall or windy conditions.

Using tackifier—a binding agent that helps the mulch adhere to the soil—and netting provides additional weight and stability to the mulch layer, which helps retain moisture while reducing the risk of it being washed away. Proper anchoring also promotes the effectiveness of the mulch in providing habitat for beneficial microorganisms while suppressing weed growth.

In contrast, other options, while related to mulch management, do not encapsulate the essential techniques for ensuring the effectiveness of mulch in erosion control. Watering the mulch regularly is beneficial but not a key feature of installation itself. Covering the mulch with gravel can hinder its intended function by reducing its ability to prevent weed growth and protect the soil. Keeping mulch loose without any covering can lead to erosion and displacement, counteracting the benefits of the mulch. Overall, option B highlights the critical approach to creating a stable and effective erosion control barrier through proper mulch installation methodology.