Bulletin Volume 352-356

Bulletin Volume 352-356

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ...between stock and cion or to poor material or adverse environment. Uniformly good results with a variety or a stock do indicate congeniality and adaptability to the conditions in which the vines are growing as well. In Table IV the relative ratings given the varieties on the several stocks and on their own roots show the vigor of the vines and where high ratings are given indicate that stock and cion are congenial and that both are adapted to their environment. The percentages are averages of all the vines of the varieties and were taken in 1910 when the vineyard had reached bearing age, when insects and fungi were well under control and before the hailstorm of that year ruined the crop. The ratings indicate vigor as judged by the eye from general appearance of vines, and amount, size and color of leaves. Table IV.--Relative Growth Rating Of Grape Varieties On Different Stocks In 1910. A comparison of this table with Tables II and III shows that in the main the greater productiveness of the vines agrees largely with vigor of vine. In the judgment of the writer the superiority of the grafted vines is best shown by vigor as indicated in this table. Grape-growers may well take note of the figures here set forth. Resistance to insect and fungus pests.--Species and even varieties of grapes are very unequally subject to animal or fungus parasites. This elementary fact, impressed upon grape-growers from the earliest times, would, of course, suggest observations as to the resistance of the vines in this experiment to the various vineyard fungi and insects. Pests there were in the vineyard in abundance, as the tales of tribulation told in the annual reports have shown, but the knowledge gained by the experimenters as to the comparative immunity of...show more

Product details

  • Paperback | 42 pages
  • 189 x 246 x 2mm | 95g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236961625
  • 9781236961624