Report of the State Board of Forestry and of the State Park Committee Volume 5

Report of the State Board of Forestry and of the State Park Committee Volume 5

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...years to develop, and some requiring as high as seventeen years. These are the seventeen Fig. 13. a. Side view of the egg chamber of the cicada. b. Branch containing old and distended cicada egg punctures. year locusts, so called. The latter are especially interesting because of their living sixteen years in the larva stage. They are found principally in the Middle and Northern States. Although the larva feed under ground on the juices of roots, there is no apparent damage except in the way they lay their eggs in the branches. A series of slits are cut in the twigs and smaller branches of the trees, by the female, forming smooth channels in which she arranges the eggs in series. Fig. 13. These eggs hatch and the larvae crawl down the tree where they enter the ground. There is nothing to be done when such a brood occurs except to take the injury and make the best of it. Valuable trees may be protected by wire netting, but this is only practical in the case of single trees, and out of the question where areas of any size are affected. The nurseryman can protect himself by not putting out young stock when he knows the pest is going to appear. On old trees no damage will be done if no pruning is done the winter preceding the one in which the insect is scheduled to appear, because then they will probably find enough old twigs in which to deposit their eggs. Many young trees are sometimes so injured that they are practically useless because their shape is completely spoiled or their main branches are so weakened that they can not form the proper top. Wherever the English sparrow has been the cicada is doomed. These birds seem to take particular delight in destroying them, and sometimes in certain localities a brood is entirely destroyed in a day by...show more

Product details

  • Paperback | 60 pages
  • 189 x 246 x 3mm | 127g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236597796
  • 9781236597793