Analysis of Epidemics of Rhizoctonia Aerial Blight of Soybean in Louisiana

(...) High numbers of primary infections were found early in the season. The correlation between average number of primary infections per day and average daily rainfall was highly significant. (...) The epidemiology of aerial blight may be divided into two phases, one before and one after canopy closure. The first phase is soilborne and determines the number of potential disease foci in the crop canopy. The second phase is leafborne and is important to the expansion of disease foci