Department Bulletin Volume 685-746
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Department Bulletin Volume 685-746

Department Bulletin Volume 685-746


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About the Book

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. 1918 Excerpt: ...plat yielded about 1,700 pounds of seed cotton per acre as compared with about 900 for the check. The treatments in this case were practically confined to late July. In all about 15 experiments were conducted during 1916, and the total results showed definitely that it was possible to poison the weevils profitably under certain conditions. Again, the increased value of late-season applications wa obvious, for, as a general rule, the early-season applications gave only slight gains with a very doubtful profit whereas the late-season applications all showed pronounced profits. EXPERIMENTS IN 1917. EXPERIMENTS AT TALLULAH, LA. At the beginning of the season of 1917 it was recognized that the experiments to date had merely demonstrated the possibility of poisoning weevils successfully, and that all phases of the economic use of the poison remained still to be worked out. Consequently a very elaborate series of experiments was inaugurated in that season, and about seventy-five tests were started in the neighborhood of Tallulah, each one intended to determine some particular point of importance. These consisted of studies of the comparative efficacy of different poisons, the time of day of application giving the best results, Fig. 3.--Typical view of opened cotton in poisoned plat on Algodon Cut No. 2, second picking, October 12, 1916, Tallulah, La. For comparison with figure 4. the most profitable season of application, the proper interval between applications, the requisite amount of poison per acre, and many other similar questions, all of which would have to be answered before definite general advice as to the use of the poison could be given. The early studies had shown that under certain conditions poisoning was profitable, but it was apparent that any chan...


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Product Details
  • ISBN-13: 9781232359654
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 176
  • Spine Width: 10 mm
  • Width: 189 mm
  • ISBN-10: 1232359653
  • Publisher Date: 01 May 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 327 gr


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