Soil Science, Volume 2Williams & Wilkins Company, 1916 - Agriculture A monthly journal devoted to problems in soil physics, soil chemistry and soil biology. |
Contents
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Common terms and phrases
absorption active protozoa activity of soil added agar agar agar ammonia Ammonia Accumulation Lab ammonifying power ammonium amount Aspergillus niger Average bacteria bacterial numbers calcium calcium nitrate carbon cent Centbl chemical chloride Colony color conidia Conidiophores containing cottonseed meal depression determined diameter dried blood dry weight effect experiment fertilizers flasks floccose fungi fungus gram growth humus hyphae inches increase incubation influence Inoculation Isolated Lipman loam magnesium manganese manganese sulfate medium method moisture content Mucor mycelium NaOH nitrate nitrification nitrogen optimum organic matter oxidation Peat Penicillium phosphate phosphoric acid pigment plants plot potassium pounds per acre present produced protozoa ratio reaction Rhizopus Rhizopus tritica salts samples sand cultures Shive sodium soil fungi soluble solution cultures species spores sterile subtilis sulfate sulfur sulphate Table temperature tion toxic Trichoderma Trichoderma Koningi tubes Zygorhynchus Vuilleminii
Popular passages
Page 4 - State, which is being conducted by the Bureau of Soils of the United States Department of Agriculture...
Page 290 - WF 1910. The analysis of silicate and carbonate rocks. US Geol. Survey Bui. 422.
Page 523 - The solvent action of soil bacteria upon the insoluble phosphates of raw bone meal and natural raw rock phosphate.
Page 441 - The comparatively insoluble salts — calcium carbonate, calcium sulphate, etc. — were carefully weighed and intimately mixed with the soil. The arranging of the work in this order gives us as nearly absolute results as can be obtained by the present bacteriological methods, and at the same time gives us' directly comparable results, which after all is what we have to look for in this work. The salts tested were the chlorides, nitrates, sulphates, and carbonates of sodium, potassium, calcium, magnesium,...
Page 241 - Harris, FS: Effect of alkali salts in soils on the germination and growth of crops.
Page 574 - CAMERON, FK, and BELL, JM 1905. The mineral constituents of the soil solution.
Page 495 - Oxidation of Sulfur in Soils as a Means of Increasing the Availability of Mineral Phosphates.
Page 433 - Some of these soils contain such large quantities of these so-called "alkalis" that no vegetation is found upon them. Other soils contain only a medium amount of soluble salts, and the vegetation is composed chiefly of alkali-resisting plants. Still other soils contain much smaller quantities of soluble salts, and they become injurious only when the soil is improperly handled. The reclaiming of the heavily charged soils and the maintaining of the others in a productive condition can be carried on...
Page 101 - Use the fertilizers nature is storing beneath your 6-inch farms. Send a postal request today for Vertical Farming Booklet 376-F. Be sure to state the acreage of the farm you own. EI du Pont de Nemours & Co. POWDER MAKERS SINCE 1802 Wilmington, Delaware Agricultural Apparatus 9190.
Page 495 - By the deficiency or absence of one necessary constituent, all the others being present, the soil is rendered barren for all those crops to the life of which that one constituent is indispensable.