Flavescence dorée: A Viticultural Murder Mystery

A pile of culled vines, infected with Goldgelbe Vergilbung; photo credit: Wachter-Wiesler
A pile of culled vines, infected with Goldgelbe Vergilbung; photo credit: Wachter-Wiesler

In slanting early morning light, a shadow crosses a vineyard. The figure moves row by row, ripping out vines and casting them onto a large, burning pyre. The blaze stretches to greet the sun as it rises above a mountainous horizon. There is fire from all points of the compass. Death is in the air. The culprit is a phytoplasm fatal to Vinifera vines. Its spread is aided by the American grapevine leafhopper (Scaphoideus titanus), a dwarf cicada native to North America. As it feasts on the vines, it transmits the pathogen of what is known in German as Goldgelbe…

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