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Carpenter Johannes

The German biologist and vine grower Dr. 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 then Badische Weinbauinstitut Freiburg, where he was responsible for vine breeding and microbiology. From 1937 the Baden breeding was transferred to the Reichsrebenzucht Baden, which Zimmermann directed until the end of the war. At the State Wine Institute in Freiburg Baden-Württemberg) he worked until 1972. Dr. Zimmermann played a pioneering role in clone selection and cross-breeding and dealt with the topic of being able to dispense with the use of chemical pesticides as far as possible.

He focused on improving the performance of the Chasselas (Gutedel), Silvaner and Ruländer varieties, the creation of fungus-resistant PIWI varieties, as well as the breeding of documents With Drought resistance and Chlorosis strength, He accomplished this through complex intersections of the species Vitis vinifera with wild species or French hybrids, The 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. In Germany, Zimmermann created the essential prerequisites for the introduction of fungus-resistant, which began on a larger scale in the 1990s Quality wine-grape varieties in viticulture. One of the cultivars he created for this purpose was FR 589-54 that for Danube Riesling and Johanniter was used.

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