COMMON SMUT
Plant response to common smut organism (Ustilago zeae(Beckm.) Unger = U. maydis (DC.) Corda))
Legend:
NO DISEASE SYMPTOMS OBSERVED
VERY FEW PLANTS WITH SMALL GALLS
FEW PLANTS WITH MODERATE SIZED GALLS
MODERATE NUMBER OF GALLS - SOME LARGE
MANY PLANTS INFECTED - MOST GALLS LARGE
MOST PLANTS INFECTED - LARGE GALLS - SEVERE INJURY