Plant on raised beds. Wilt, Fusarium Fusarium oxysporum f. Symptoms usually first appear on oldest leaves at bloom. Areas of leaf margin wilt, then turn yellow. Eventually, entire leaf may wilt and turn yellow.
Leaves defoliate prematurely.
A brown layer of tissue appears just below the bark of lower stem. Bolls may open prematurely. These symptoms are difficult to distinguish from Verticillium wilt. None Most varieties are somewhat resistant. Maintain soil pH at 6.0 to 6.5.