Letters To The Editor: Aug. 1997

To The Editor:
I am responding to an error in the article "Managing Plant Health Through Better Root Growth" in your March issue. Page 65 of that article (Table 2) cites a study where Kentucky bluegrass had a vastly inferior heat tolerance to other species. The table was extracted from a study published by S.J. Wallner, M.R. Becwar and J.D. Butler of Colorado State University in the Journal of Horticulture Science in 1982.

The temperature value the article cited for Kentucky bluegrass was 94.6 F, which was in error. Wallner, et al. found a value of 54.8 C for Kentucky bluegrass, which translates to 130.6 F - a value very similar to tall fescue and other turfgrasses.

Doug Brede, research director
Jacklin Seed Company

EDITOR'S NOTE: The information contained in the chart was provided by the authors in Celsius, but the conversion to Fahrenheit was incorrectly calculated for Kentucky bluegrass. We regret any error.

INTERNET EDITOR'S NOTE: The above error has been corrected in the online version of the aforementioned article, which can be found here: Spring Technical Guide: Managing Plant Health Through Better Root Growth.