Josef Mader (1876-1938), a viticulture expert, was a son of Karl Mader (1847-1914), the director of the Institute in San Michele all'Adige. He first attended the viticultural school there and then the Klosterneuburg viticultural school. Among his teachers there were August-Wilhelm Freiherr von Babo (1827-1894) and Emerich Ráthay (1845-1900). Afterwards he worked as a hiking instructor for several years. From 1899 he was head of the Prussian vine grafting institute in Engers on the Rhine. In 1900 he was given the position of viticulture director for South Tyrol and the position of viticulture teacher in San Michele all'Adige. As he was in Austrian service during the First World War (1914-1918), he was dismissed after the war. Mader wrote a book on viticulture in South Tyrol and collaborated on new editions of the Handbuch für Weinbau by August-Wilhelm Babo and Edmund Mach (1846-1901). In 1922 he was appointed head of the Hessian viticulture domain in Mainz. His main merits were the promotion of grafting on the basis of the Kober 5 BB rootstock and as a pioneer for a modern winery economy.