Final answer:
Mulches in turfgrass establishment are used to conserve moisture, control weeds, provide shade for seeds, and prevent erosion, creating a favorable environment for growth.
Step-by-step explanation:
Mulches are used in turfgrass establishment for several reasons, mainly to conserve moisture, control weeds, and provide shade to the germinating seeds. These practices help ensure that the turfgrass has the necessary resources and environment to establish strong roots and grow effectively. While mulches can retain moisture in the soil, preventing it from evaporating, they also suppress weed growth by blocking sunlight and creating a barrier. Furthermore, mulch provides a microclimate that offers shade and cooler temperatures, facilitating seed germination and preventing soil surface crusting. Additionally, mulches contribute to erosion control by protecting the soil surface from raindrop impact and water runoff, which is especially important on slopes or in heavy rain areas.