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Objective measures for powdery mildew


Scott, ES and Petrovic, T and Kravchuk, O and Zanker, T and Emmett, RW, Objective measures for powdery mildew, Australian Grape and Wine Authority, Australia, UA1202 (2016) [Contract Report]

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Powdery mildew compromises wine quality. Visual inspection, currently used to estimate disease severity, is subjective and prone to inaccuracy. Research was undertaken to improve visual assessment and to develop objective measures. A diagrammatic key and smartphone app, with supporting online training resource, were developed, trialled in Australia in 2015 and released globally in 2016. A DNA-based assay (qPCR) was developed for absolute quantification of powdery mildew fungus in grapes. Mid- and near-infrared spectroscopy proved insufficiently sensitive to discriminate levels of powdery mildew severity critical to the sector. Arachidic fatty acid was identified as a potential biomarker for quantifying powdery mildew on grapes.

Item Details

Item Type:Contract Report
Keywords:powdery mildew
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Horticultural production
Research Field:Oenology and viticulture
Objective Division:Plant Production and Plant Primary Products
Objective Group:Industrial crops
Objective Field:Wine grapes
ID Code:129149
Year Published:2016
Deposited By:TIA - Research Institute
Deposited On:2018-11-12
Last Modified:2018-11-16

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