The Potash Salts; Their Production and Application to Agriculture, Industry and Horticulture

The Potash Salts; Their Production and Application to Agriculture, Industry and Horticulture

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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. 1902 edition. Excerpt: ...heavy and strong clays. It should be observed that: --(a) At three centres out of four the complete chemical manure gave a higher yield than farmyard manure, and that the average yield from the former exceeded that from the latter by 7f cwt. (b) At all the four centres the yield from the complete chemical manure, of plot 3 exceeded that from plot 2 where kainite was omitted. (c) The average yield of the plot, dressed with complete chemical manure, exceeded that of the unmanured plot by 17 cwt. of hay per acre. The cost of this manure was 1 10s., and therefore the cost of the extra 17 cwt. of hay was at the rate of Is. 9d. per cwt. (d) The average yield from plot 2, from the manure of which potash was omitted, was only 6 cwt. in excess of that obtained from the unmanured plot, and this extra 6 cwt. cost at the rate of 3s ld. per cwt. LEGUMINOUS CROPS. As above noted, potash is well known to be the "dominant manure" for the leguminosae, which include clover, vetches, beans, peas, etc. As nitrogen is the costliest manure which the farmer has to buy, and as leguminous species can derive their own supplies of nitrogen from the atmosphere, actually leaving the land richer in this element than it was before, it is most important that farmers should procure as much as possible of the necessary soil-nitrogen free of cost by a development of the cultivation of leguminosa?, seeing that these are not only very valuable for feeding, but are also "nitrogen accumulators." On account of this property of direct assimilation from the atmosphere, it follows that, if there be a reasonable amount of lime compounds in the soil, the only artificial manures that require to be applied in order to ensure a first-class leguminous crop are...show more

Product details

  • Paperback | 64 pages
  • 189 x 246 x 3mm | 132g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236604571
  • 9781236604576