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Gesamtextrakt - around 50 substances from different types of alcohol to anthocyanins, aromatic compounds, glycerine, carbon dioxide and phenols to types of acidity, sulphur and sugars
Systematic analysis of vine species - around 20 species of vine from vitis acerifolia to vitis aestivalis, vitis cinerea, vitis riparia and vitis rupestris to vitis vinifera and vitis vulpina
Enemies of the vine - more than 100 diseases and pests from anthracnosis to botrytis, chlorosis, flavescence dorée, downy and powdery mildew, Pierce's disease and phylloxera to grapevine fanleaf virus, grape moths and cicadas