. Soils, their properties and management. Soils. THE NITBOGEN CYCLE '*Hr*Hr" ^Jl experiments show that in the same soil nitrites may sometimes accumulate, indicating conditions more favor- able to the development of the Nitrosomonas bacteria. /y/t/wen o/a/r. erem 'Farm ] /Vam/re ; .⢠-'â¢^^^^*;^â¢â ///traces ^ Fig. 61.âDiagrammatic representation of the movements of nitrogen between soil, plant, animal, and atmosphere. This has been termed the nitrogen cycle. The formation of nitrates usually follows closely on the production of nitrites, so that there is rarely more than a trace of the
. Soils, their properties and management. Soils. THE NITBOGEN CYCLE '*Hr*Hr" ^Jl experiments show that in the same soil nitrites may sometimes accumulate, indicating conditions more favor- able to the development of the Nitrosomonas bacteria. /y/t/wen o/a/r. erem 'Farm ] /Vam/re ; .⢠-'â¢^^^^*;^â¢â ///traces ^ Fig. 61.âDiagrammatic representation of the movements of nitrogen between soil, plant, animal, and atmosphere. This has been termed the nitrogen cycle. The formation of nitrates usually follows closely on the production of nitrites, so that there is rarely more than a trace of the latter to be found in soils. A soil favorable to the process of nitrification is usually well adapted to all the processes of nitrogen transformation. Marked differences have been found in the nitrifying power of bacteria from different soils. Highly productive soils have generally been found to contain bacteria having greater nitrifying efficiency than those from less produc- tive soils, but this may not always be the case, as other factors may limit the productiveness. 369. Effect of organic matter on nitrification. â A peculiarity in the artificial culture of nitrifying bactma. 29. 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 Lyon, T. L. (Thomas Lyttleton), 1869-1938; Fippin, Elmer O. (Elmer Otterbein), 1879-1949; Buckman, Harry Oliver, 1883-. New York, Macmillan
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