pear leaf rust fungus gymnosporangium sabinae tree leaves |
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navigate by keyword : pear rust leaf gymnosporangium sabinae disease plant pathology fungal infection fruit tree spots orchard problem closeup macro agriculture horticulture spores crop damage orange infected leaves |
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Close-up of pear tree leaves infected with pear rust disease caused by the fungal pathogen Gymnosporangium sabinae. The orange spots are typical symptoms of this fungal infection, which affects pear trees during spring and summer |
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