Occurrence of major diseases and of gray-mold neck rot (Botrytis allii Munn) of onion in Saga Prefecture.
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概要
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Phytophthora leaf rot caused by Phvtophthora porn, downy mildew caused by Peronos-pora destructor and Botrytis leaf blight caused by Botrvtis allii, B. bvssoidea, Ba cinerea and B. squamosa were the major diseases of onion recorded in Saga Prefecture based on sur-veys covering a period of 8 years from 1978 to 1985. During the 8 year period, the incidence of Phytophthora leaf rot was severe whereas that of downy mildew and Botrytis leaf blight was mild in 1983. A new onion neck rot disease caused by Botrvtis sp. was detected in 1983 and 1984. The causal fungus was identified as Botrvtis allii MUNN by comparative studies on the morphological and pathological properties of the fungus.
- 九州病害虫研究会の論文
九州病害虫研究会 | 論文
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