Southern blight
darkening and rotting of the stem, resulting in the destruction of the cortex and the main root. As a consequence, leaves higher up in the plant start yellowing [...] present girdling of the stem, which causes wilting of the upper part, necrosis, loss of leaves, and death of the plant. Symptoms begin with brown, aqueous [...] lesions on the stem. As the damage progresses, it causes darkening and rotting of the stem, resulting in the destruction of the cortex and the main root