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2017

Iowa State University

Botany

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Infection Studies With Watermelon Wilt Caused By Fusarium Niveum Efs., D. R. Porter May 2017

Infection Studies With Watermelon Wilt Caused By Fusarium Niveum Efs., D. R. Porter

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Watermelon wilt, caused by Fusarium niveum, is a serious disease in Iowa and in many other sections of the United States. The present Iowa acreage is less than 10 percent of the acreage before wilt became a factor.

Three heretofore undescribed seedling symptoms are described. These are: seedling rot, damping off and stunting.

The organism may cause lesions on any of the roots. These are at first water-logged and become discolored in advanced stages. The lesions vary in length from a trace to 28 centimeters.

Infection may be induced thru the use of infested soil, by means of spore suspensions ...