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    Oidium or Powdery Mildew of the Vine
    Oidium or Powdery Mildew of the Vine
    Oidium or Powdery Mildew of the Vine
    Ebook61 pages43 minutes

    Oidium or Powdery Mildew of the Vine

    By Frederic T. Bioletti

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    About this ebook

    A study on oidium originally printed in 1907 by the university of California. This book is thoroughly recommended for inclusion on the amateur or professional winegrower and historian of viticulture, containing a wealth of information and anecdote, much of which is still practical today. Extensively illustrated with drawings, diagrams and photographs. This book contains classic material dating back to the 1900s and before. The content has been carefully selected for its interest and relevance to a modern audience. It comes complete with a specially commissioned new biography of the author.
    LanguageEnglish
    PublisherRead Books Ltd.
    Release dateAug 26, 2016
    ISBN9781473354470
    Oidium or Powdery Mildew of the Vine

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      Book preview

      Oidium or Powdery Mildew of the Vine - Frederic T. Bioletti

      Frederic Theodore Bioletti

      Frederic Theodore Bioletti was born in 1865 in Liverpool, England.

      In 1878, he emigrated to the United States and resided in Sonoma County, California. He attended Heald's Business School in San Francisco before beginning, what would become his life's vocation, working for Senator Stanford in his commercial wine cellar at Vina Ranch.

      From 1889 to 1900, Bioletti studied at the University of California, Berkeley, where he received his Bachelor's and Master's degrees in 1894 and 1898 respectively. While there, he was an assistant to Professor E. W. Hilgard, a noted soil scientist, with whom he studied the fermentation of wines. Their work greatly influenced the vintner's of California and resulted in a higher quality grape being produced in the region.

      Bioletti left California for South Africa, in 1901, to teach viticulture, oenology, and horticulture, but returned three years later to rejoin the University at Berkeley. For most of the remainder of his career he taught and conducted research at the University's Department of Viticulture and Oenology where he was both their first professor and first chair of the department. He also founded the grape breeding program at the University of California Agricultural Experiment Station where he was active in introducing and breeding new varieties of grape. During prohibition, Bioletti had the creative task of attempting to come up with uses for the wine grape other than producing alcohol.

      Bioletti retired in 1935 and died four years later in 1939.

      OIDIUM OR POWDERY MILDEW OF THE VINE.

      _________

      Fungous Diseases of the Vine. California is peculiarly fortunate in its freedom from most of the serious fungous vine diseases which add so much to the expense and uncertainty of grape growing in most countries. Peronospora, Black Rot, and Anthracnose are here quite unknown. Of the four most serious fungous diseases which attack the above-ground portions of the vine, these three are the most to be feared, as they are not only capable, if neglected, of destroying the whole crop of a vineyard, but require the utmost vigilance and much troublesome treatment with winter washes and summer sprays to hold them in check. Their absence makes quite unnecessary the swabbing of the dormant vines with sulfate of iron and the spraying of the growing vines with Bordeaux mixture which are adopted here by some vineyardists who have learned the practice in Europe or the Eastern States where it is necessary.

      On the other hand, the remaining serious fungous disease—Oidium—exists in all parts of California. From one point of view, this is the most serious disease of the four, as, if uncontrolled, it is capable of spreading more universally through the vineyards and of absolutely destroying the crops in nearly all. From another point of view, it is the least to be feared, as it is possible to control it completely, at least in most parts of California, by much simpler and less expensive methods than are needed for the others mentioned.

      Introduction of Oidium into Europe. With the exception of Anthracnose, which is a native of Europe, all these diseases originated on the wild vines of the Eastern and Central parts of the United States. Peronospora and Black Rot are comparatively recent introductions into Europe. The former was observed for the first time in 1878, the latter not until 1885. The Oidium was first noted in Europe about 1845, when an English gardener named Tucker found it in graperies at Margate, near the mouth of the Thames. It was discovered two years later in the hot-houses of Paris and Belgium.

      Severity of the Disease in Europe. From this time it spread rapidly, until by 1851 it had reached every grape-growing country of Europe. The amount of injury done by the disease was

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