Manures and Their Uses; A Handbook for Farmers and Students

Manures and Their Uses; A Handbook for Farmers and Students

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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. 1908 edition. Excerpt: ...of nitrogen) soluble, and the ammonia fixed (non-volatile). The best Dissolved Peruvian Guano is that made at the Anglo-Continental (Ollendorff's) Guano Works. Messrs. Ohlendorff & Co. were the first manure manufacturers who treated genuine Peruvian guano with sulphuric acid; and so rendered the phosphoric acid and nitrogen available plant-foods. The present company which succeeded the old business firm of Ohlendorff has extensive factories at Hamburg, Antwerp, Emmerich-on-Rhine, as well as in London. "The London factory covers eight acres of land, and is admirably situated on the Thames." About 300 labourers are employed, besides a number of women who sew bags, etc. The weekly out-put from these works is more than 1,000 tons of dissolved Peruvian guano and other manufactured manures. The following table gives the composition of "Ohlendorffs " Dissolved Peruvian Guano. The analysis is by Mr. H. B. Shepherd, F.C.S.: --Moisture (loss at 100C.) 8 55 Organic matter + water of combination.... 41-G4. (Containing nitrogen = 6-76 = 8-21 per cent. ammonia) Soluble phosphate of lime 13-18 (Equal to 20-64 per cent. tricalcium phosphate made soluble) Tricalcium phosphate (insoluble) 4-02 Sulphate of lime, alkaline salts, and magnesia... 27-01 (Containing 2-24 per cent. potash = 4-14 per cent. sulphate of potash) Insoluble matter 4-70 100-00 The late Dr. A. Voelcker, P.R.S., reported that Ollendorff's Dissolved Peruvian Guano was the "most powerful, intrinsically valuable, and best prepared compound fertilizer " which had ever been brought under his notice. Dr. A. Stockhardt (the German agricultural authority) states that "dissolved Peruvian guano contains large quantities of nitrogen and phosphoric acid; like the raw...show more

Product details

  • Paperback | 34 pages
  • 189 x 246 x 2mm | 82g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236536053
  • 9781236536051