Circular Volume 264-297

Circular Volume 264-297

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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. 1922 edition. Excerpt: ...bearing Keiffer or Garber pears this spray is necessary only in case the trees have actually become infested. Most of the other varieties of pears grown in the southern section will require annual spraying, the same as apples, as a precautionary measure. Cluster-Bud Spray.--This spray is primarily for the control of pear scab and curculio. It should be applied when the individual flower buds in the cluster begin to separate but before they open. The same materials should be used, in the same proportions, as for the cluster-bud spray for the apple. Calyx Sp1'ay.--This spray is for codling moth, curculio, and pear scab. Applications should be begun as soon as most of the petals have fallen. The same materials should be used, in the same proportions, as for the cluster-bud spray for the apple. Three Weeks after Fall of Peta.ls.--This spray is for codling moth, curculio, and sooty blotch. The same materials should be used, in the same proportions, as for the cluster-bud spray for the apple. SPRAY SCHEDULE FOR PEACHES' Dormant Spray.--This spray is used against San Jose scale and leaf curl. It may be applied in the fall after the leaves have dropped, or in the spring before the buds swell. In each 50 gallons of spray there should be--5% gallons commercial liquid lime sulfur--or the amount of homemade lime sulfur indicated in ' Table 2 (page 20) for dormant spraying--or not less than 15 pounds dry lime sulfur ' The most destructive insect attacking the peach is the peach tree borer. This insect cannot be controlled by spraying, but is easily killed by the application of para-dichlorobenzene about the base of the trunk from September 25 to November 1. This chemical should be used at the rate of 175 to 1% ounces per tree, ...show more

Product details

  • Paperback | 178 pages
  • 189 x 246 x 10mm | 327g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236778766
  • 9781236778765