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Month: Aug
Year: 2011
State: OR
County: Hood River
Grower: Home Garden
Host Category: woody ornamentals
Host Common Name: quaking aspen
Host Scientific Name: Populus tremuloides
Symptoms: brown leaf spots with yellow halos
Parts affected: leaf
Primary Pathogen Category: fungus
Diagnosis Common Name: Marssonina leaf spot
Diagnosis Scientific Name: Marssonina sp.
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