Occurrence of Guignardia bidwellii, the causal fungus of black rot on grapevine, in the vine-growing areas of Rh in eland-Pa latin ate. Germany

摘要

During the years 2003 and 2004 attacks of black rot on grapevine, causing strong economical losses, were observed in some of the vine-growing areas of Rhineland-Palatinate. The regions of Mosel-Saar-Ruwer, Mittelrhein and Nahe have been especially affected. Suitable climatic conditions and a large number of overgrown vineyards favoured the development of the disease in these regions. Fungicide treatments with dithiocarbamates, strobilurines and azoles resulted in sufficient disease control, indicating that the development of a practicable protection strategy seems to be possible.