Results of Experiments At Rothamsted On the Growth of Barley for More Than Th
Results of Experiments At Rothamsted On the Growth of Barley for More Than Th
Joseph Henry Gilbert
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Salts 400 Ibs ; 10 yrs. 58-67, 200 Ibs ; 1868 and since, 275 Ibs. Nitrate goda. (2) 6 yrs. 1852-71 Bape Cake 2000 Ibs. , and since 1000 Ibs. 10 RESULTS OF EXPERIMENTS AT ROTHAMSTED, purely mineral manures, of purely nitrogenous manures, and of combi- nations of the two. Results are given for sixteen plots, arranged in four series of four plots each, and for each plot the produce dressed grain per acre is given for thirty-four years in succession. Series 1 comprises four plots, without any nitro...genous manure, namely Plot 1. Without manure. , , 2. Superphosphate of lime alone. , , 3. Sulphates of potash, soda, and magnesia. 4. Superphosphate, and sulphates of potash, soda, and magnesia. Series 2 comprises four plots, with the same four conditions as to mineral manures as Series 1, and ammonium salts supplying 43 Ibs. Of nitrogen per acre, per annum, in addition. Series 3, the same four conditions as to mineral manure, with for six years 86 Ibs. , and for ten years 43 Ibs. Of nitrogen per acre per annum as ammonium salts, and for the last eighteen years 43 Ibs.
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