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Zimmermann Johannes

The German biologist and vines breeder Johannes Zimmermann (1907-1998) studied natural sciences and then passed the state examination in the subjects of biology, chemistry and geography. In 1934 he joined the former Baden Wine Institute Freiburg and was responsible there for vine breeding and microbiology. From the year 1937, the Baden vine breeding was transferred to the Reichsrebenzüchtung Baden, which led Zimmermann until the end of the war. At the State Wine Institute in Freiburg Baden-Württemberg) he worked until 1972. Zimmermann pioneered clone selection and crossbreeding and focused on avoiding the use of chemical pesticides.

He continued his focus on improving the performance of the varieties Chasselas (Gutedel), Silvaner and Ruländer, the creation of fungus resistant PIWI varieties, as well as the breeding of documents With Drought resistance and Chlorosis strength, This he accomplished through complex intersections the species Vitis vinifera with wild species or French hybrids, The ones created by him new varieties were the varieties Deckrot. kolor. Nobling and Zähringer (Goal of quality improvement), as well as the PIWI varietiesHecker. Johanniter. Merzling and Rosetta, Dr. Zimmermann created in Germany the essential prerequisites for the introduction of fungal resistant substances, which began on a large scale in the 1990s Quality wine-grape varieties in viticulture. A breeding variety created by him for this purpose was FR 589-54 for Danube Riesling and Johanniter was used.

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