UV-B Exposure in Turfgrass

Creeping bentgrass in a residential lawn. Credit: westernwonder.com

Creeping bentgrass in a residential lawn. Credit: westernwonder.com

     With peak ultraviolet radiation exposure expected to peak between 2010 and 2020, scientists at Ohio State University studied the effect of UV-B exposure on turfgrass that is typically cut high (such as those used in residential lawns). Using Tall fescue ("Barvado"), perennial ryegrass, and two cultivars of creeping bentgrass ("Penncross" and "L93"), researchers exposed to light treatments high in UV-B.

     Three weeks after the initial treatments growth rates were significantly lower under UV-B conditions for all turfgrass. "These experiments demonstrated that exposure to UV-B resulted in a decline of growth rate and color in cool-season turfgrasses within a timeframe of 2 weeks," noted lead author Ed Nangle. 

     "Coarse-textured turfgrasses may be more adapted to higher UV-B conditions due to morphological differences compared with the finer-textured varieties," said Nangle.

     The original article is available here, and the study and abstract are available here from ASHS HortScience electronic journal