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A) Cracks in the watermelon rind; B) Bacterial exudate oozing from cracks.
Claudia Nischwitz and Ron Gitaitis
University of Georgia, Coastal Plain Experiment Station, Department of Plant Pathology
Email: cnisch@uga.edu
Host: Watermelon (Citrullus lanatus)
Disease name: Bacterial fruit blotch
Pathogen name: Acidovorax avenae psubsp. citrulli
The disease was first observed in spring of 1989 in the United States and occurs to a varying degree every year since then. In severe cases 90% of the marketable fruit can be lost. The initial symptom on fruits is a small watersoaked lesion that enlarges quickly within a few days. Eventually the rind will crack, the entire fruit rots and bacteria begins oozing from the cracks.
APS publication number: IW000055
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