%0 Journal Article %A K. J. Dell %A W. D. Gubler %A R. Krueger %A M. Sanger %A L. J. Bettiga %T The Efficacy of JMS Stylet-Oil on Grape Powdery Mildew and Botrytis Bunch Rot and Effects on Fermentation %D 1998 %R 10.5344/ajev.1998.49.1.11 %J American Journal of Enology and Viticulture %P 11-16 %V 49 %N 1 %X The use of JMS Stylet-Oil as a control for powdery mildew and bunch rot of grapes was investigated under California vineyard conditions. Stylet-Oil at 2% (v/v) was compared in commercial vineyards with commonly used fungicides including fenarimol, myclobutanil, triflumizole, and sulfur for powdery mildew control, or iprodione for bunch rot control. Stylet-Oil gave control of powdery mildew comparable to the demethylation inhibitor fungicides. Botrytis bunch rot was significantly reduced with Stylet-Oil alone, and when Stylet-Oil was mixed with iprodione a further reduction in bunch rot occurred. Grape juice fermentation as measured by yeast growth and sugar consumption was not affected by Stylet-Oil concentrations that ranged from 0 to 3.6 mL/L. %U https://www.ajevonline.org/content/ajev/49/1/11.full.pdf