Coleoptera; Life Histories and Economic Relations Volume 2

Coleoptera; Life Histories and Economic Relations Volume 2

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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. 1912 edition. Excerpt: ...As adults float as readily as do squares, they may also be carried long distances, and, furthermore, they are able to crawl out of the water onto any bushes, weeds, or rubbish which they may touch. Even when floating for several days continuously they are able to live and may be carried directly to new fields. The floating of adults and infested squares explains the appearance of weevils in great numbers along high-water line immediately after a flood, and indicates that probably the most rapid advance the pest will make in the United States will be into the fertile cotton lands of the Red River Valley in Louisiana. PROBABILITIES AS TO THE INFLUENCE OF CLIMATE ON THE WEEVIL IN COTTON REGIONS NOT NOW INFESTED. The influence which the lower temperature prevailing over the northern edge of the cotton belt may have upon the development, destrucliveness, and spread of the weevil is as yet largely problematical. No considerable amount of accurate data upon the development of the weevil being at present available except that collected at Victoria, Tex., during the seasons of 1902 and 1903, it is impossible to predict with certainty how far or how rapidly the weevil may spread or the rapidity of development which may take place under the different climatic conditions prevailing in regions not at present infested, or whether it may be expected that its destructiveness to cotton will be materially reduced in other sections. These questions are, however, of considerable interest because of the probability that the weevil will ultimately spread over iho entire cotton belt in spite of any measures which may be adopted to retard its progress. During the past century the attention of many botanists and zoologists has been drawn to the relations existing between...show more

Product details

  • Paperback | 442 pages
  • 189 x 246 x 23mm | 785g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236576071
  • 9781236576071