Situation of flavescence dorée and its vector Scaphoideus titanus in Switzerland
In Switzerland, Grapevine flavescence dorée phytoplasma (EPPO A2 List) remains confined to the canton of Ticino, where it was first found in 2004. In this canton, the disease was recently observed for the first time in the Sopraceneri region (north part), in the vineyards of Magadino, Sementina, Losone and Gerra Piano. The insect vector of the disease, Scaphoideus titanus, occurs in Ticino, as well as in a few vineyards in the cantons of Geneva and Vaud. In 2007, mandatory control against S. titanus will be applied over a total surface of 600 ha of vineyards. The control strategy includes three insecticide applications with different active substances (buprofezin, chlorpyrifos or chlorpyrifos-methyl) targeting different stages of the insect. The possible use of biological control methods is also currently being studied. Finally, preliminary experiments on the efficacy of hot water treatment (50°C during 15 min) in eliminating the phytoplasma from grapevine planting material gave satisfactory results.
The situation of Grapevine flavescence dorée phytoplasma in Switzerland can be described as follows: Present, few outbreaks found in the canton of Ticino, under official control.
Sources
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