Root rot of carrot
in nonsterile soil remained viable at 0°C and 3°C for 12 months, at 6°C for 6 months, and at 12°C for 2 months, indicating a capacity to overwinter in [...] lesions of various shapes. The lesions can merge and eventually cover the entire surface of the carrot. The affected areas are firm, shallow, and clearly [...] root, leaf, and petiole lesions. Continuous light is best for in vitro sporulation. Spore germination in vitro requires free water. The pH for growth, s