ROOT-ROT OF RED RASPBERRY CAUSED BY PHYTOPHTHORA-CITRICOLA AND P-CITROPHTHORA IN CHILE

Outbreaks of root rot on red raspberry occur frequently in Chile and o ften are related to excess soil moisture. Aerial symptoms, including l eaf chlorosis, wilting of primocanes and floricanes, poor growth of fl oricanes, and poor emergence of primocanes, are always associated with root necrosis. Diseased plants eventually die. Phytophthora citricola and P. citrophthora were consistently recovered from the roots of sym ptomatic plants of the cultivars Willamette and Glen Clova. These path ogens were identified on the basis of morphological features of sporan gia and sex organs and mycelial growth at different temperatures. P. c itricola has been previously associated with root rots and decline of red raspberry, but this is the first report of P. citrophthora as a pa thogen on red raspberry and the first confirmed report of any Phytopht hora species causing root rot of red raspberry in South America.