heat tolerance

By Cathryn Chapman and Bingru Huang, Rutgers University

Heat stress can limit the growth of cool-season turfgrass species and inhibit important metabolic processes and functions, which can negatively impact the overall aesthetic qualities of the turfgrass canopy. Damages to the turfgrass canopy due to heat stress can be severe and permanent if turfgrass plants experience prolonged temperature conditions that are above the optimal level.

By Bingru Huang, Rutgers University

Heat stress is a primary limiting factor for the growth of cool-season turfgrass species, as the optimal temperature for these species are between 60 and 75 ^oF, but summer temperatures in many areas are often much higher than this temperature range. One of the most desirable traits for cool-season turfgrasses, such as fine fescue, is good heat tolerance, which enables sustainable turf growth through hot summer months with reduced inputs.