Monitoring of Qol fungicide resistance in Plasmopara viticola populations in Japan

作者：Furuya Seiichi; Mochizuki Mai; Saito Seiya; Kobayashi Hironori; Takayanagi Tsutomu; Suzuki Shunji^*

来源：Pest Management Science, 2010, 66(11): 1268-1272.

DOI：10.1002/ps.2012

• Qo inhibitor
• azoxystrobin
• kresoxim-methyl
• Plasmopara viticola
• fungicide resistance
• vineyard

BACKGROUND: The increasing occurrence of Qol fungicide resistance in Plasmopara viticola (Berk. & MA Curtis) Berl. & De Toni populations is becoming a serious problem in the control of grapevine downy mildew. In Japan, the existence of Qol-fungicide-resistant P. viticola was reported in 2009.
RESULTS: The Qol fungicide resistance in P. viticola samples collected from vineyards in Japan in 2008 and 2009 was monitored. Resistant P. viticola were detected in the regions where Qol fungicides have been introduced in accordance with the pest management programme, whereas in Hokkaido vineyards, where Qol fungicides have not yet been introduced, Qol-fungicide-resistant P. viticola were not found.
CONCLUSION: Japan comprises thousands of islands and is physically isolated from other countries by the sea. Monitoring the emergence, incidence and distribution of Qol fungicide resistance in P. viticola populations in Japan is necessary to improve pest management strategies for downy mildew disease in Japanese vineyards.

• 出版日期2010-11