Dieback of Juglans regia caused by Phytophthora cactorum
Photo Gallery
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Phytophthora cactorum disease symptoms on English walnut  |
P. tentaculata disease symptoms on California mugwort  Nursery grown California mugwort plant (Artemisia douglasiana) infected with P. tentaculata and exhibiting severe root and crown rot |
P. megasperma colony morphology on PDA  Colony morphology on PDA at 7 days |
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P. cambivora colony morphology on MA  Uniform fluffy colony morphology at 14 days at 20°C on MA |
P. cambivora colony morphology on PDA  Colony morphology on PDA at 14 days |