. The chemistry of agriculture, for students and farmers. Agricultural chemistry. 42 GROWTH OF THE PLANT growth of cereals in South Austraha. {e) Plenty of phos- phorus reduces the content of nitrogen in seeds of Fig. 7.—Effect of phosphorus on seed development. Corn. The shock on the right came from a phosphate-treated plat. (Soils Department, Wisconsin^ Station.) 42. Potassium.—(a) For the manufacture of carbo- hydrates, potassium is necessary. It seems probable that the condensation of formaldehyde to dextrose takes place only in the presence of some potassium compound, organic in
. The chemistry of agriculture, for students and farmers. Agricultural chemistry. 42 GROWTH OF THE PLANT growth of cereals in South Austraha. {e) Plenty of phos- phorus reduces the content of nitrogen in seeds of Fig. 7.—Effect of phosphorus on seed development. Corn. The shock on the right came from a phosphate-treated plat. (Soils Department, Wisconsin^ Station.) 42. Potassium.—(a) For the manufacture of carbo- hydrates, potassium is necessary. It seems probable that the condensation of formaldehyde to dextrose takes place only in the presence of some potassium compound, organic in nature, ih) For the hydrolysis of starch, potassium seems necessary, possibly forming a suitable solution in which the amylases can best act. (c) The presence of potas- sium is necessary for the production of cellulose, since it gives rigidity to stems. A lack of potassium is shown in. 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 Stoddart, Charles William, 1877-. Philadelphia, New York, Lea & Febiger
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