Ink painting/drawing of Cercospora leaf spot disease on sugar beet, caused by the fungus Cercospora beticola.

The painting shows a single sugar beet leaf covered in small round light grey-brown lesions 2-5mm in size. Each lesion has a dark brown ring at its outer border. In some areas the lesions have fused into necrotic patches.

Top: scanned image

Bottom: photograph

This image is paired with Ramularia leaf spot (also on sugar beet)