Effects of Wetting Agent use on Anthracnose on Annual Bluegrass

13.06.28-osu.tagClint Mattox, Alec Kowalewski and Brian McDonald
Department of Horticulture, Oregon State University
May 5, 2016

Anthracnose is an important turfgrass disease caused by the fungal pathogen Colletotrichum graminicola that is particularly damaging to annual bluegrass putting greens, especially during periods of heat and drought stress under low nitrogen fertility conditions and low mowing heights.  

Currently, traditional fungicide applications are the only known method to control this disease.  In recent years, increasing pesticide bans and restrictions have generated concern regarding management of turfgrass pathogens like C. graminicola. The objective of this research was to evaluate the effects of the application of the wetting agent Revolution (modified alkylated polyol, Aquatrols) at different timings and frequencies in order to quantify any effects on the incidence of anthracnose.