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TURFGRASS SCIENCE

Effects of Ice Cover on Annual Bluegrass and Creeping Bentgrass Putting Greens

Prairie Turfgrass Research Centre, Dep. of Land Science, Olds College, 4500 50th St., Olds, AB, Canada T4H 1R6

^* Corresponding author (jross{at}oldscollege.ca)

Damage as a result of ice cover on putting greens affects golf courses in cold climates. The objectives of this study were to assess cold-hardiness levels and injury of annual bluegrass [Poa annua f. reptans (Hausskn.) T. Koyama] and creeping bentgrass (Agrostis stolonifera L. cv. Penncross) under ice cover maintained for various periods of time under laboratory and field conditions. In the lab, cold-hardened plants of both species were subjected to either snow-covered, ice-covered, or ice-encased treatments and tested for cold-hardiness levels at various periods of time. Ice-encased annual bluegrass plants stored for 90 d were dead, while ice-covered and snow-covered plants had cold-hardiness levels of –4°C and –18°C, respectively. In contrast, at 150 days after treatment (DAT), creeping bentgrass that was ice encased had a cold-hardiness level of –18°C, while snow-covered plants had a cold-hardiness level of –27°C. In the field, annual bluegrass and creeping bentgrass plants were subjected to the following treatments: snow cover, ice cover, and snow or ice removed 45 DAT and then were sampled at various times to determine cold-hardiness levels. As in the lab, ice cover had less impact on bentgrass than annual bluegrass. At 90 DAT, ice-covered creeping bentgrass had cold-hardiness levels of –29°C while annual bluegrass plants were dead at 75 DAT. Snow-covered annual bluegrass plants still had cold-hardiness levels of –16°C at 75 DAT. Removing the snow or ice after 45 DAT had little or no effect.

Abbreviations: DAT, days after treatment • PTRC, Prairie Turfgrass Research Centre

This article has been cited by other articles:

				P. Rochette, J. Dionne, Y. Castonguay, and Y. Desjardins Atmospheric Composition under Impermeable Winter Golf Green Protections Crop Sci., June 20, 2006; 46(4): 1644 - 1655. [Abstract] [Full Text] [PDF]