Phytophthora root rot or rubbery brown rot (Phytophthora megasperma)

Symptoms

• Infected portions of the root become dark brown to black, water-soaked and rubbery in consistency
• Lesions may occur in one or more bands anywhere on the carrot root
• White mycelia may be present on lesions, which facilitates the spread of the fungus to adjacent roots

Management

• Maintaining adequate soil drainage
• Storage conditions - temperature at 0^oC and RH < 95%