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Esca disease, as well as other trunk diseases of grapevine, is an important wood disease that impedes the water transport in plants by clogging the xylem vessels. This type of effect is not detectable for years, due to the long latency time of the disease. In a field experiment, the susceptibility of Vitis vinifera cv. Cabernet sauvignon and Merlot to esca disease was evaluated by visual assessment...
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