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Charles Johnson's Images

Title: Professor & Extension Plant Pathologist
Organization: Virginia Polytechnic Institute and State University
Unit: Southern Piedmont Agricultural Research & Extension Center
Country: United States
2 Images of 2 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
5332059 Phytophthora blight Phytophthora nicotianae
5332070 blue mold Peronospora tabacina

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