Abstract
Isolates of E. turcicum from commercial and seed production corn fields in Hardin, Mercer, and Preble counties, Ohio, caused lesions on inbreds and hybrids of Z. mays with the Ht gene. When these isolates were inoculated onto inbred NN14B containing the Ht2 gene, resistant-type, chlorotic lesions developed indicating the isolates were race 2. None of the isolates were virulent on NNB carrying the Ht2 gene and none were avirulent on lines carrying the Ht gene; thereore race 3 has not as yet been found in Ohio.

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