By David Moseley, Price, III, Paul P, Padgett, Guy B., Watson, Tristan, Villegas, James M.
LSU AgCenter
Foliar symptoms are usually not evident until soybean is in the mid to late reproductive growth stages. Initial symptoms are small chocolate brown lesions on the petioles near the leaflet. As the disease progresses, foliar symptoms are expressed as a reddish brown to tan discoloration on the upper leaf surface in the upper canopy.