Publications. Entomology Volume 3

Publications. Entomology Volume 3

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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. 1899 edition. Excerpt: ...In collecting and destroying them many useful parasites would be destroyed but in case of a serious outbreak the thorough collecting of the cocoons would accomplish more immediate good than the parasites. It would, however, be but little trouble to place the cocoons under a coarse netting and leave them until the parasites had escaped. The netting should be too fine to allow the moths to pass but coarse enough to allow the parasites to escape. Capturing the moths.--As previously stated the moths fly at dusk or later. They are attracted by a bright light, and may be captured by placing a lighted lantern over a tub of water, over which enough kerosene oil has been poured to make a thin film. The moths flying about the light will fall into the water. While this method may be of some value it is doubtful if many female moths will fly to the light before having deposited their eggs, after which of course, it makes no difference whether they are attracted to the light or not. Combating the insect when attacking shade trees.---All of the methods just described can be used to check the insect when attacking small shade trees. For large trees banding is of much value. In some of the villages in which the caterpillars were abundant last spring, they were dislodged from the large trees by streams of hydrant water and prevented from going back up the trunks by the sticky bands. For spraying the large trees special apparatus is required. Steam power is usually used. A suitable outfit can be purchased for from about $200 up. The increase of shade tree insect pests and diseases make it almost necessary for a village to own a spraying apparatus to ensure the preservation of its shade trees. A method of combating the insects which has been tried with success is...show more

Product details

  • Paperback | 158 pages
  • 189 x 246 x 9mm | 295g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236635795
  • 9781236635792