Learn about Phytophthora and reduce the risk of Phytophthora disease in the nursery. Modules include biology, management and P. ramorum.
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Leaf spots on camellia caused by Phytophthora nemorosa.
Oregon Dept of Agriculture
USDA-ARS Horticultural Crops Research Lab
Oregon Department of Agriculture through a grant from the USDA Natural
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Date Added: Jun 26, 2009 Hits: Rating: 0.00 Votes: 0