The Organic Constituents Of Soils Classic Reprint

Author : Oswald Schreiner
Publisher : Forgotten Books
ISBN 13 : 9780364417850
Total Pages : 60 pages
Book Rating : 4.4/5 (178 download)

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Download or read book A Beneficial Organic Constituent of Soils, Creatinine written by Oswald Schreiner and published by Forgotten Books. This book was released on 2018-03-18 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Beneficial Organic Constituent of Soils, Creatinine: Introduction; Importance of Beneficial Soil Constituents; The Isolation of Creatinine From Soils, the Origin of Creatinine in Soils, Effects of Cretinine on Growth and Absorption There have appeared a number of bulletins from this laboratory dealing with the nature and properties of soil organic matter. The extendedpstudy of this subject, about which so little definite informa tion existed in chemical and agricultural literature, was undertaken as a result of the discovery of a harmful property in extracts from unproductive soils which was shown to be organic in character rather than inorganic. An investigational survey of organic compounds likely to occur in soils showed that some of these had decided effects on plant growth, and an examination of the organic matter of un productive soils led to the discovery and isolation of several harmful constituents. The details of these investigations, as well as the effect of such Substances in hindering plant growth, interfering with the normal processes of plant life and plant metabolism, have been given in the earlier reports of these investigations. All of these facts Showed the great importance of more accurate knowledge concerning that most important and yet least understood Soil constituent, the organic matter or humus of soils. A thorough inquiry into the nature of this material has been made in this laboratory and already a considerable fund of definite information is at hand. Starting without methods and with no definite organic soil constituent ever isolated from soil, the work has steadily progressed until to-day over 25 organic soil constituents have been isolated, definitely identified, and classified. The list of the compounds so far isolated varies from simple com pounds, containing only carbon and hydrogen, to complex compounds, containing carbon, hydrogen, oxygen, nitrogen, and phosphorus. They are compounds which exist as such in living plants or arise from the decay or decomposition of the proteins, fats, nucleic acids, carbo hydrates, and other plant and animal substances, as the result of purely chemical oxidations and reductions and through the inter vention of molds, bacteria, protozoa, and other biological influences in soils. According to the factors Operative in the decay of this plant and animal debris, the course of change will be different, resulting under one set of conditions in the formation of the abnormal and harm ful constituents alluded to above and under other conditions In the formation of normal or beneficial organic constituents of soils. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.