The Distribution of the Mycelial Types ofGloeodes pomigenaon Apples in North Carolina and Their Relationship to Environmental Conditions

The distribution of the four mycelial types of Gloeodes pomigena was determined by monitoring their incidence and severity in eight locations throughout North Carolina in 1986 and 1987. Temperature, rainfall, and relative humidity were monitored at four sites in 1986 and seven sites in 1987 throughout the growing seasons. The incidence of sooty blotch approached 100% at all locations by the end of each growing season. Severity of the disease was highest at locations with cooler temperatures and longer periods of dew (western Mountains) or higher humidities (eastern Coastal Plain). The punctate mycelial type was most common overall and was most prevalent in areas where disease severity was greatest [...]