Bulletin Volume 206-220

Bulletin Volume 206-220

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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. 1910 edition. Excerpt: ...Collar-Rot. There is frequent complaint of the dying of the trunk of both younger and older apple trees wherein there appears to be associated the exposure to sun and the death of the bark of the trunk upon younger orchard trees. The freezing injury has been carefully worked out in recent years and is discussed under winter injuries, with several varieties of apples, notably the 'G!'ilT'l8S and King this trouble Fig.32. Apples spotted by sooty fungus. The apples is so Serious Over much of Ohio shown above were sprayed with Bordeaux mixture fol a t red" 6 th r th fth ' lowed by two sprays of Bordeaux and Iron Sticker. The S O C e g ow O 856 apples shown below were sprayed first with Bordeaux Sortsi while Murrill has 5118'' mixture and this was followed by two sprays of selfgested a, connection between a, boiled lime-sulfur. In neither case was the scab entirely prevented. The lime-sulfur spray was not strong enough to keep ofilate attacks of sooty fungus. From a photograph by T. F. Mauns. fleshy fungus and this dying of the trunks of the King the con nection has not been proved. The injuries which occur on the south and southwest exposures of the trunk have probably adirect connection with the danger from freezing injuries. Some apparent sun-scald is more probably due to the bacterium of pear blight as has been recently proved by cultures from young trees by Waite. Vith Grimes and other varieties susceptible to collar-rot caused by the bacteriumot pear blight the only true relief is found by top working on some vigorous sort such as Baldwin, Gano, and like varieties. In the case of true sun-scald the effect of freezing is to form an ice layer and thus separate the bark or in the case of many water gorged cells to...show more

Product details

  • Paperback | 256 pages
  • 189 x 246 x 14mm | 463g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236942337
  • 9781236942333