Scale insects are sap-sucking pests that draw nutrients from plants and excrete a sugary liquid called honeydew. These insects are common in Australian vineyards but typically do not cause enough damage to warrant action to control them. In some circumstances, however, the population can reach a threshold where intervention is required to avoid fruit being downgraded or rejected. Because scale insects have not been considered a high priority for viticultural research, knowledge about their biology and ecology in vineyards is limited.
Scale – insect pests in Vineyards (AWRI Fact sheet)
Control of Vine Scale – fact sheet (AWRI)
Practical Information about Scale Monitoring and Control (DJ Growers’ Supplies)
Grapevine Scale and Sooty Mould
Grapevine Scale Fact Sheet (AWRI)
Factors that Lead to Sooty Mould (Final Report)
Scale Insects in Shiraz (Final Report)