Pest Management Science (2010) 66, 1268-1272

Seiichi Furuya, Mai Mochizuki, Seiya Saito, Hironori Kobayashi, Tsutomu Takayanagi and Shunji Suzuki (2010)
Monitoring of QoI fungicide resistance in Plasmopara viticola populations in Japan
Pest Management Science 66 (11), 1268-1272
Abstract: BACKGROUND: The increasing occurrence of QoI fungicide resistance in Plasmopara viticola (Berk. and MA Curtis) Berl. and DeToni populations is becoming a serious problem in the control of grapevine downy mildew. In Japan, the existence of QoI-fungicide-resistant P. viticola was reported in 2009.
RESULTS: The QoI 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 QoI fungicides have been introduced in accordance with the pest management programme, whereas in Hokkaido vineyards, where QoI fungicides have not yet been introduced, QoI-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 QoI fungicide resistance in P. viticola populations in Japan is necessary to improve pest management strategies for downy mildew disease in Japanese vineyards.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plasmopara viticola	Grapevine (Vitis)	Japan