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White mold, White leaf spot, Downy spot (Microstroma juglandis) on Walnut, black (Juglans nigra)


4 Images
5368713
Paul Bachi
University of Kentucky Research and Education Center

Upper surface of infected leaves with light green colored bumps.

5368714
Paul Bachi
University of Kentucky Research and Education Center

Lower surface of infected leaves showing white mold directly opposite the bumps on upper surface.

5368715
Paul Bachi
University of Kentucky Research and Education Center

Close-up of white spore-producing bodies ("conidiophores") and spores.

5368716
Paul Bachi
University of Kentucky Research and Education Center

Close-up of light green colored bumps on upper surface of leaf.