Root rot of carrot
circular to irregular spots on the leaves that vary in colour from grey to almost black. The spots appear to be sharply defined, but under a magnifying [...] -3°C to 25°C, with an optimum around 18°C. Lesions are dark brown to black, moist, mostly circular spots 0.5 -1.2 cm diameter that extend only to 2 mm [...] germination in nonsterile soil was proportional to the proximity to carrot rootlets. Conidia on leaflets produced a germ tube, an appressorium and an infection