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Gray leaf spot (Pyricularia grisea) on Fescue, tall (Fescuta arundinacea)


9 Images
5405306
Paul Bachi
University of Kentucky Research and Education Center

Overall symptoms of newly-seeded tall fescue infected with Pyricularia grisea the cause of Gray leaf spot.

5405307
Paul Bachi
University of Kentucky Research and Education Center

Close-up of collapsed, newly-seeded tall fescue infected with Pyricularia grisea the cause of Gray leaf spot.

5405308
Paul Bachi
University of Kentucky Research and Education Center

Individual spot infections of Pyricularia grisea the cause of Gray leaf spot.

5405309
Paul Bachi
University of Kentucky Research and Education Center

Close-up of two spots infected with Pyricularia grisea the cause of Gray leaf spot.

5405310
Paul Bachi
University of Kentucky Research and Education Center

Close-up of a single spot infected with Pyricularia grisea the cause of Gray leaf spot.  There is a patch of gray-green colored condiophores and conidia just above and along the midrib.

5405311
Paul Bachi
University of Kentucky Research and Education Center

Close-up of two spots infected with Pyricularia grisea the cause of Gray leaf spot.

5405312
Paul Bachi
University of Kentucky Research and Education Center

Close-up of a single spot infected with Pyricularia grisea the cause of Gray leaf spot.  There is a patch of gray-green colored condiophores and conidia between two main veins of the leaf.

5405313
Paul Bachi
University of Kentucky Research and Education Center

An image of the spores and stained mycelia of the fungus, Pyricularia grisea.

5405314
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the spores of the fungus, Pyricularia grisea along with some stained mycelia.