Grape – Black Rot
Guignardia bidwellii
Grape – Black Rot Signs & Symptoms
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- Symptomatic fruit with pycnidia evident
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- Pycnidia evident in leaf spot
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- Pycnidia in tissue with conidia extruding
Grape – Black Rot Pathogen
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- Pycnidia in tissue showing ostioles, top view
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- Cross-section of pycnidium in plant tissue
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- Conidia
