The fungus then invades nodes and stem tissues. Sclerotia form on stem surface and within pith. In contrast to sunflower, roo t infection does not occur in soybean. Severe levels of white mold may nullify the yield advantage of drilled beans over row beans. This may be the most important factor in controlling white mold.
Economic loss is associated with damage to seed quality.
Diaporthe phaseolorum var. The relative frequency of the two pathogens varies according to location, etc. The pathogens and spore forming structures are abundant on plant debris and my be seed transmitted. The pathogens cause a latent infection throughout plants and may be detected by culturing on media containings herbicides. Symptoms become evident as plants approach senescence.