Symptoms When a plant is onset, start with the lower leaf first. Irregular water-stained lesions appeared on the edges of the leaves, especially at the tips of the leaves. After the leaves were yellowed and dead, and gradually developed toward the upper leaves, the whole plant wilted and died. The cortex of the rhizome of the diseased plant often cracked, and the vascular tissue became brown. When the humidity was high, the diseased surface showed pink moldy layer.
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