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Fusarium blight of the soy bean and the relation of various factors to infection

Richard O Cromwell, University of Nebraska - Lincoln

Abstract

During the summer of 1915 and each succeeding summer,packages of diseased plants of the soy bean Soja max (L.) Piper(20) 2.3 were received at the North Carolina Experiment Station from several correspondents. A large number of plants in the fields from which these specimens were taken had become stunted or chlorotic, or were dead. The plants received were still green and in good condition for examination. The evidence obtained from a preliminary inspection indicated that the diseased condition was due to the presence of a fungus belonging to the genus Fusarium. Furthermore nearly all of the isolations from this material gave apparently pure cultures of a species of Fusarium. Because of the importance of legumes in the cropping systems of the Piedmont and Coastal Plains sections, and because of the seriousness and extent of Fusarium diseases of members of this and thirteen other plant families, an investigation was outlined (1) to determine the parasitism of this species of Fusarium on soy bean, (2) to establish its relationship to Fusaria of the section Elegans in so far as a comparison of the cultural characters per- mitted, and (3) by means of cross inoculations and field studies to determine the relationship of this disease of soy beans to the wilt disease of cowpeas (Vigna sinensis Hassk.) caused by Fusarium tracheiphilum Smith.

Subject Area

Plant Pathology

Recommended Citation

Cromwell, Richard O, "Fusarium blight of the soy bean and the relation of various factors to infection" (1918). ETD collection for University of Nebraska-Lincoln. AAIDP13718.
https://digitalcommons.unl.edu/dissertations/AAIDP13718

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