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SMALL, SUNKEN SPOTS ON CANES (Occurs frequently) Oval, sunken spots with darker margins occur randomly along canes. Photo by Chad Behrendt |
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LARGE CANE LESIONS (Occurs occasionally) Brown to gray colored lesions that encompass several stem nodes. Lesions are usually associated with wounds. Photo by |
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LESIONS AT NODES (Occurs occasionally) Purple to brown colored lesions located at cane nodes. Photo by Plant Disease Clinic |
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OTHER CAUSES Other symptoms caused by chemical, animal, or environmental factors. Photo by Chad Behrendt |