Root rot of carrot
carrot rootlets. Conidia on leaflets produced a germ tube, an appressorium and an infection peg into an epidermal cell, and then intracellular and intercellular [...] Norway, in 1965. An infection can occur through the soil and the air. The fungus develops at temperatures ranging from -3°C to 25°C, with an optimum around [...] affected areas are firm, shallow, and clearly visible. Under certain conditions, an olive-green mycelium can develop on the surface. Initially, the disease forms