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Verticillium Wilt
Verticillium wilt is one of the most important diseases of cotton worldwide and causes great economic losses in some cotton
producing areas.
Typical symptoms include interveinal chlorosis or necrosis, stunting, defoliation, and streak of light to dark vascular discoloration. These symptoms may occasionally occur on young plants, but often more pronounced on plants after flowering. Overall yellowing appearance may occur on plants co-infected with root-knot nematode in late summer. Symptom expression varies with variety, inoculum density in the foil, pathogen strains, and environmental conditions. The diagnostic symptom is the vascular staining of the main stem and root.