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Dear Aggie: Several ears of my sweet corn were ruined by what look like large gray tumors. What is this and how can I prevent it? Depending on who you ask, corn smut is either a blessing or a curse. Corn smut or Devil’s Corn (Ustilago maydis) is a common fungal disease that infects corn in the early stages of development. Sweet corn is more susceptible than dent or field corn. The fungal spores travel on the wind and can disperse over long distances, particularly during dry and hot weather. Spores land on and then infect plant tissues. Infection occurs most easily when there is water present on the surface of the plant or at injury sites due to mechanical damage. As the disease progresses, large white to grey galls appear. The galls are particularly noticeable on ears and tassels; each kernel of corn can become a single large gall when infected. As the galls age, the interiors turn an inky black before finally erupting. Spores are then released into the air, repeating the cyc

Silver kingUniversity of wisconsinDear aggieSilver queenவெள்ளி கிங்பல்கலைக்கழகம் ஆஃப் விஸ்கான்சின்வெள்ளி ராணி