青森県における宿根性スターチスうどんこ病の発生と有効薬剤

抄録

Powdery mildew on perennial statice (Limonium spp.) was found in 1998 in Aomori Prefecture. The causal fungus was morphologically identified as Oidium sp. based on Hagiwara et al.(1998). Field investigations in 1999 showed the disease had become distributed widely among cultivated areas in Aomori Prefecture, causing considerable damage. Seven fungicides. myclobutanil, mepanipyrim, iminoctadine-triacetate/polyoxins, diflumetorim, triflumizole, azoxystrobin and sulfur, were tested in a plastic-film house, and all were found to be active against the test fungus, with myclobutanil the most effective at the standard concentration.