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Margaret McGrath's Images

Title: Associate Professor
Organization: Cornell University
Unit: Plant Pathology and Plant-Microbe Biology
Country: United States
Web: http://www.longislandhort.cornell.edu/vegpath/photos/index.htm

Vegetable pathologist with an applied research and extension program on Long Island, NY.
4 Images of 2 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
5470382 basil downy mildew Peronospora belbahrii Pathogen produces dark spores on the underside of leaves opposite symptoms on the upper surface.
5470383 basil downy mildew Peronospora belbahrii Initial symptoms of downy mildew on upper surface of leaves is chlorosis occurring usually in sections because the pathogen cannot grow past major veins in the leaf.
5470381 late blight Phytophthora infestans Large leaf spots often with a light green border are typical for late blight.
5470380 late blight Phytophthora infestans Sporulation of the pathogen, Phytophthora infestans, visible on the underside of the leaflet.

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