id author title date pages extension mime words sentences flesch summary cache txt 27274 Aikman, Charles Morton Manures and the principles of manuring .txt text/plain 150655 11540 73 free nitrogen by the plant, or within the soil, takes place, if at all, combined nitrogen present in soils and manures was an important source applying nitrogen to the soil as a manure. plants can absorb nitrogen in certain organic forms and as ammonia cent of the nitrogen absorbed by green-leaved plants from the soil is soils contain of nitrogen, phosphoric acid, and potash. natural sources of the three important soil constituents, nitrogen, _Influence of Manures in increasing Soil-nitrogen._ _Influence of Manures in increasing Soil-nitrogen._ NITROGEN AS NITRATES IN WHEAT-SOILS VARIOUSLY MANURED, OCTOBER 1881, NITROGEN AS NITRATES IN BARLEY-SOILS VARIOUSLY MANURED, MARCH 1892, certain other manures, more valuable for nitrogen and phosphoric acid, asked, Are the nitrogen, phosphoric acid, and potash in farmyard manure Guano derives its value as a manure from the nitrogen, phosphates, and Guano must be regarded as a nitrogenous and phosphatic manure, as the ./cache/27274.txt ./txt/27274.txt