Professor Dr. Dr. Gerhardt Erich Alleweldt (1927-2005) studied agriculture at the Justus-Liebig-University in Gießen from 1950, graduated in 1953 and received his doctorate in agriculture (Dr. agr. sci.) in 1956. In 1956, he began working at the Institute for Grapevine Breeding Geilweilerhof in Siebeldingen-Pfalz (IRZ) under the direction of the then director of the institute, Prof. Dr. Bernhard Husfeld (1900-1970), after whose death he took over the management in 1970 and continued to hold this position until his retirement in 1995.
In 1991 he became head of the Federal Institute for Breeding Research in Viticulture and Horticulture in Siebeldingen(Rhineland-Palatinate). Alleweldt held a number of other positions, such as chairman of the German Vine Breeders' Association. At the Faculty of Agriculture of the Justus-Liebig-University of Gießen (Hesse) he was authorised to teach the subject "Plant Production and Plant Breeding with Special Consideration of Viticulture and Vine Breeding".