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Eyespot of Maize, a Disease New to North America. D. C. Arny, Department of Plant Pathology, University of Wisconsin, Madison 53706; E. B. Smalley(2), A. J. Ullstrup(3), G. L. Worf(4), and R. W. Ahrens(5). (2)(4)(5)Department of Plant Pathology, University of Wisconsin, Madison 53706, (3)Department of Botany and Plant Pathology, Purdue University, Lafayette, Indiana 47906. Phytopathology 61:54-57. Accepted for publication 5 August 1970. DOI: 10.1094/Phyto-61-54.

A new foliage disease of maize occurred across the northern part of the United States corn belt in 1968 and 1969. The inciting fungus, Kabatiella zeae, originally was described from Hokkaido, Japan, in 1959. Inoculations with conidia from pure cultures induced lesions identical to those observed in the field. The fungus was isolated from overwintered maize debris. Field tests with inbred lines and hybrids indicated a range of reaction to the disease.

Additional keywords: Zea mays.