Some Studies on Bordeaux Mixture

Some Studies on Bordeaux Mixture

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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. 1916 edition. Excerpt: ...0.23 1.77 231.6 32.7 264.3 Cheek.................. 1.41 0.14 1.55 211.3 20.7 232.5 Early Rose, Sprayed................ 1.48 0.19 1.67 221. 28. 249. Check................... 1.19 0.16 1.35 178.5 24. 202.5 Industrie, Sprayed................ 0.09 0.54 0.63 13.7 80.9 94.6 Check................. 0.05 0.63 0.68 7.4 94.6 102. The above figures show that, notwithstanding the late planting, the yield of the American varieties was increased as a result of spraying operations. This difference undoubtedly would have been much greater if the plants had remained green as is usually the case into October. The apparent small decrease on the German variety, Industrie, hardly can be considered as conclusive as only three rows were used, the middle row serving as a check on the two sprayed rows. In an experiment in another part of the field on the German varieties the results were as follows: ---Industrie Paulsen's Julie Sprayed. Unsprayed. Sprayed. Unsprayed. pounds Dounds _ pounds pounds per plant per plant per plant per plant 1.19 1.09 1.29.96 The difference in Industrie is slightly in favor of the sprayed rows while it is still more favorable in the case of the early variety, Paulsen's Julie, and it seems safe to say that if the latter had been planted at the proper time, it would have shown a much larger gain. The results on the variety Industrie are to be regarded as inconclusive and the tests were repeated in 1914. The small yield secured from these German varieties is further indicative that they are adapted to a longer growing season than that found in this latitude. Further trials were conducted on another field of Green Mountain potatoes in which the check rows were sprayed twice and dusted twice with arsenate of lead alone, whereas...show more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236818466
  • 9781236818461