Larch needle cast surveys in Wisconsin, Iowa, and Michigan, summer 1981

In the summer of 1981, 63 stands of larch (European, Japanese, hybrid, and tamarack) were examined for symptoms of Mycosphaerella laricina (larch needle cast) in Iowa, Michigan, and Wisconsin. Stand location, tree species, seed source, year planted, stand size, stand aspect, percent slope, and presence or absence of needle cast were recorded for each stand. Additional measurements included the presence of other diseases and insects. Stands surveyed in this study include larch stand from the Coulee Experimental Forest (Bangor, WI).
The survey attempted to determine the geographic location and extent of infection, and to assess the influence of site and stand characteristics of Mycosphaerella needle cast on larch. A secondary objective of the survey was to record the presence of other diseases and insects injuring larch.
The information for this metadata was drawn from a USDA Forest service, Northern Area administrative report: 82-4 (which is included in this data publication).