Towards improved early detection of grapevine phylloxera (Daktulosphaira vitifoliae Fitch) using a risk-based assessment

Abstract

Grapevine phylloxera (Daktulosphaira vitifoliae Fitch) is a significant threat to the Australian viticulture industry, with over 80% of grapevines planted on highly susceptible, ungrafted Vitis vinifera L. Early detection of phylloxera is critical as it can spread unnoticed in the early years of infestation when vine foliar symptoms may not reflect subterranean root damage. Management strategies such as phylloxera exclusion zones (PEZ) and a number of quarantine protocols relating to movement of machinery and grape materials are already established within Australia in an attempt to contain proliferation throughout viticultural regions. Such measures are particularly important for regions lik..