Archive image from page 20 of Decomposition of green manures at. Decomposition of green manures at different stages of growth .. decompositionofg00mart Year: 1921 Decomposition of Green Manures 153 a considerable increase in the amount of available phosphorus and potassium in the soil himius. He attributes these results to the large amounts of carbon dioxide given off by the decaying organic matter, since this gas acts as a solvent on the minerals of the soil. Truog (1912) shows in his work that the availability of the insoluble compounds of phosphorus is due to the carbon-dioxide accumulati
Archive image from page 20 of Decomposition of green manures at. Decomposition of green manures at different stages of growth .. decompositionofg00mart Year: 1921 Decomposition of Green Manures 153 a considerable increase in the amount of available phosphorus and potassium in the soil himius. He attributes these results to the large amounts of carbon dioxide given off by the decaying organic matter, since this gas acts as a solvent on the minerals of the soil. Truog (1912) shows in his work that the availability of the insoluble compounds of phosphorus is due to the carbon-dioxide accumulations brought about by the decay of green manures. 36 30- 25 .S 20 £ 13. Ffc/e Oafs — 'Buc/fH/heat B Fig. 34. SERIES 1917. effect on growth of a subsequent wheat crop produced BY THE incorporation IN THE SOIL OF GREEN MANURE AT VARIOUS STAGES OF MATURITY AND THE SUBJECTION OF THE MIXTURE TO A FOUR-MONTHS INCUBATION PERIOD The weights of dry matter added were constant {Data given in table 6) It would appear, therefore, that decaying organic matter renders available the otherwise insoluble plant nutrients in the soil. The decomposition products, such as carbon dioxide and butyric, acetic, lactic, and other organic acids, are in all probability the causative factors for much of this increase. The more rapid or more complete the decay process, the more quickly do the decomposition products accumulate, accompanied by an increased amount of available nutrients. As an
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Keywords: 1900, 1920, 1921, _ithaca_, archive, biodiversity, book, bookauthor, bookcentury, bookcollection, bookcontributor, bookdecade, bookpublisher, booksubject, bookyear, drawing, fedlink, green_manuring_from_old_catalog_, historical, history, illustration, image, library_of_congress, martin_thomas_lysons_1885_from_old_catalog_, page, picture, print, reference, the_library_of_congress, vintage
