. A contribution to the investigation of the assimilation of free atmospheric nitrogen by white and black mustard. Mustard; Plants Assimilation; Nitrogen. Fig. 3.—Sand cultures of Sinapis nigra, July 31, -vrith nitrates. identical with the fourth row except that the cultures were sterilized. In the last four rows of cultures the action of microorganisms was excluded. All chemicals used in the experiments were of the grade i-Purissi- brani" and yet were first tested for the possible presence of nitrogen. The calcium sulphate which could not be obtained here in that grade. Fig. 4.—Sand cult
. A contribution to the investigation of the assimilation of free atmospheric nitrogen by white and black mustard. Mustard; Plants Assimilation; Nitrogen. Fig. 3.—Sand cultures of Sinapis nigra, July 31, -vrith nitrates. identical with the fourth row except that the cultures were sterilized. In the last four rows of cultures the action of microorganisms was excluded. All chemicals used in the experiments were of the grade i-Purissi- brani" and yet were first tested for the possible presence of nitrogen. The calcium sulphate which could not be obtained here in that grade. Fig. 4.—Sand cultures of Sinapis nigra, Aug. 30, with nitrates. wa s imported from E. Merck, of Darmstadt, Germany. The water used for watering the plants as well as that for preparing the nutritive solu- tions, was redistilled until it failed to give the faintest blue coloration with diphenylamin or reddish coloration with Xessler's reagent. For the pots the finest sand obtainable in the neighborhood was used. This. 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 Lotsy, Johannes Paulus, 1867-1931; United States. Office of Experiment Stations. Washington : U. S. G. P. O.
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Keywords: ., bookauthorunitedst, bookcentury1800, bookdecade1890, bookyear1894
