. The book of the Rothamsted experiments. Lawes, J. B. (John Bennet), 1814-1900; Gilbert, Joseph Henry, Sir, 1817-1901; Rothamsted Experimental Station; Agriculture -- Experimentation; Agricultural chemistry. RELATION OF YIKLD TO X1T1;()( IFA SI riM \ KM of crop is somewhat (lepeiiiit on tlie source of nitrogen employed: thus I Ih. of nitrogen as animonium-sahs gives un increase of 0110 ton, as nitrate of soila the increase is 0147 ton fov each lb. of nitroi^'en, while with rape cake the increase WITH COMPLETE (Plots 4.) WITH l)LX(i. ( 1.). Fill. 14.—Maiifrtl Wur/.el. KfTict o
. The book of the Rothamsted experiments. Lawes, J. B. (John Bennet), 1814-1900; Gilbert, Joseph Henry, Sir, 1817-1901; Rothamsted Experimental Station; Agriculture -- Experimentation; Agricultural chemistry. RELATION OF YIKLD TO X1T1;()( IFA SI riM \ KM of crop is somewhat (lepeiiiit on tlie source of nitrogen employed: thus I Ih. of nitrogen as animonium-sahs gives un increase of 0110 ton, as nitrate of soila the increase is 0147 ton fov each lb. of nitroi^'en, while with rape cake the increase WITH COMPLETE (Plots 4.) WITH l)LX(i. ( 1.). Fill. 14.—Maiifrtl Wur/.el. KfTict of iiureasiiif; ainoimts of Nitrop n. Avini;.'c Produce of Roots per acre. 1876-1W2. O = No Nitrogenous Manure. I N = S(5 II). Nitrogen as Nitrate of Stnlii. A = 86 lb. Nitrogen as Ainmoniuin-salts. I C = 9S lb. Nitrogen as Ha|>o Cake AC - P-^ lb. Nitrogen as Rape Cake, and *"') Ih. Nitn>;,'<'n as ,\mnioniiiin-salts. is 0T03 ton for each II). of nitrogen api)lic(l. IJape cake, in fact, is not strictly comparable with the other two sources of nitrogen, for not only does it contribute a consideiable aniouni of organic matter to t):e soil, thus improving its texttuc arnl water-retaining power, l»ut it is also a more .sl.)wly-aeting manure. Some of its residues accumulate from . to , and little by little become available for ihe later crops, while we have plenty of evidence that, on the liothamsted Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hall, Daniel, Sir, 1864-1942; Lawes Agricultural Trust Committee; Warington, Robert, 1838-1907. London, J. Murray
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