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The white grape variety (also Kerner) is a new breed between Trollinger (red) and Riesling (white). The crossing took place in 1929 at the National Training and Research Institute in Vineyard (WÃ¼rttemberg) by August Herald (1902-1973). The Plant Variety Protection was granted 1969th The naming took place after the Swabian poet Justinus Kerner, Justinus (1786-1862), who lived in the vineyard and including poems and songs written about wine. The early ripening and hardy variety gives good yields of high must weight. The total vineyard area in 2009 was 3584 hectares in Germany. The trend is very much in decline, because ten years earlier it was still twice as much. In small quantities it is also grown in Austria and South Tyrol. It provides a riesling-like, acid-stressed wine. The grade crossing was a partner in the new varieties Jewel , Red Kite and Silcher . A mutation is Core Modeling . Since 1979, Germany will enter into the "Kerner disease" in which a virus is produced (Arabis mosaic virus). It begins with depression with growth in the years to complete failure of the vine. Apparently this is the variety most susceptible.