White mold on stems
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Lightning damage Plants look dead or wilted. The stem base has a blanchedappearance. Hydraulic liquid damage Hydraulic liquid dropped from...
Air pollutants Air pollutants cause dark lesionson leaves that resemble lateblight, but no yellowish halosurrounds the lesions. No whitefungal growth...
Water damage on lower leaves The tips of leaflets look water-soaked and aresurrounded by a yellowish halo. No myceliumdevelops as...
Early blight on leaves and stems On leaves, irregular, dark-brown lesions withconcentric rings. Usually, the lesions aresurrounded by yellowish areas....