Leaf infections usually start in spots where infected blossoms fell.A white, dense fungal growth on dead leaves. The late blight fungus does not survive in dead tissue.
Rhizoctonia on stems
White fungal mycelium justabove the soil line. The tissue beneath the mycelium is not damaged and the mycelium can be easily rubbed off. The stem colour of the affected area is not dark brown to black as in late blight infections.