Digital tools for vineyard management: A diagrammatic key for assessing powdery mildew severity on grape bunches
conference contribution
posted on 2023-05-24, 16:26authored byEmmett, B, Scott, ES, Petrovic, T, Katherine EvansKatherine Evans, Kravchuk, O, Perry, W
During visual assessment of powdery mildew (PM), bunches are scored according to disease severity categories (% of bunch surface area affected of total area assessed). The quality of assessment depends on the experience and training of the assessor in disease recognition and area estimation. Diagrammatic keys are often used to guide assessment. A key for use in commercial vineyards should assist users to differentiate small increments in severity in the low range because rejection thresholds are typically 3-6% severity. Here we present a key developed in consultation with wine company assessors and representatives to assist preharvest assessment.
Funding
Wine Australia
History
Publication title
16th Australian Wine Industry Technical Conference 2016
Department/School
Tasmanian Institute of Agriculture (TIA)
Event title
16th Australian Wine Industry Technical Conference 2016