The Influence of Iron Sulfate Application Interval on the Suppression of Microdochium Patch on an Annual Bluegrass Research Green in Western Oregon

摘要

Microdochium patch occurs in cool and humid environments (Dwyer et al, 2017) in the presence of the fungal pathogen Microdochium nivale (Fr.) Samuels & I.C. Hallett on a susceptible host such as annual bluegrass (Poa annua L. f. reptans (Hausskn.) T.Koyama). In areas meeting these conditions, like in the Pacific Northwest, Microdochium patch is considered the most important turfgrass disease (Vargas, 2005). The majority of golf courses in these areas apply fungicides to mitigate the damage caused byMicrodochium patch, although legislation makes it a challenge for some turfgrass managers to use fungicides (Christie, 2010).