M. L. Schuster

Date of this Version


Document Type



Schuster, M.L. (1975) Leaf freckles and wilt of corn incited by Corynebacterium Nebraskense Schuster, Hoff, Mandel, Lazar, 1972 (Research Bulletin No. 270)


ISSN 0161-3833


The new bacterial disease Leaf Freckles and Wilt (LFW) of corn (Zea mays L.) was first observed in 1969 on two farms in southcentral Nebraska. Since then it has spread to other areas in the state. LFW is a serious disease on farms in six Nebraska counties (Clay, Custer, Dawson, Furnas, Hall and Phelps) and has been found in isolated cases in at least 28 other counties. In 1971 LFW was found in a seedcorn field in western Iowa, in 1973 in two Kansas counties, and in 1974 in South Dakota and Colorado. Because of its explosive nature, several facets of the disease and the causal agent, a previously undescribed plant pathogenic bacterium, have been investigated. The new bacterium was identified and described as Corynebacterium nebraskense Schuster, Hoff, Mandel, and Lazar, 1972. The common name, Leaf Freckles and Wilt, was chosen because it is descriptive and characteristic of the disease symptoms. In several scientific papers terms such as Nebraska leaf freckles and wilt, bacterial leaf blight and wilt, bacterial leaf freckles and wilt and Nebraska wilt and leaf freckles, have been employed. Leaf Freckles and Wilt, finally selected as the preferred common name, was so reported in national and international scientific journals.