What is a primary reason for using plant growth regulators in turfgrasses?

Using plant growth regulators (PGRs) in turfgrasses primarily aims to slow vertical leaf growth. This control helps to maintain a more uniform and aesthetically pleasing lawn, as excessive vertical growth can lead to problems like thatch accumulation, which can inhibit water and nutrient absorption. By managing the vertical growth, PGRs allow the turf to remain dense and robust while reducing the need for frequent mowing. This regulation can also enhance turf health by encouraging a more efficient allocation of resources, allowing the grass to focus on root development and overall robustness rather than excessive leaf growth. Thus, using PGRs effectively contributes to better turf management.