Principles and Practice of Agricultural Analysis, Vol. 2
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Wiley, Harvey Washington) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from Principles and Practice of Agricultural Analysis, Vol. 2: A Manual for the Estimation of Soils, Fertilizers, and Agricultural Products; For the Use of Analysts, Teachers, and Students of Agricultural Chemistry 1. Introduction. - In the first volume the principal plant foods occurring in soils have been named and the methods of estimating them described. As fertilizers are classed those materials which are added to soils to supply supposed deficiencies in plant foods, or to render more available the stores already present. There is little difference between the terms fertilizer and manure. In common language the former is applied to goods prepared for the farmer by the manufacturer or mixer, while the latter is applied to the stores accumulated about the stables or made elsewhere on the farm. Thus it is common to speak of a barn-yard or stall manure and of a commercial fertilizer. One of the objects of the analysis of soils, as described in the first volume of this work, is to determine the character of the fertilizer which should be added to a field in order to secure its maximum fertility. One purpose of the present part is to determine the fitness of offered fertilizing material to supply the deficiencies which may be revealed by a proper study of the needs of the soil. 2. Natural Fertilizers. - In the succession of geologic epochs which has marked the natural history of the earth there have been brought together in deposits of greater or less magnitude the stores of plant food unused by growing crops or which may once have been part of vegetable and animal organisms. Some of these deposits have been mentioned in the first volume, paragraphs 11, 12, and 18. 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.
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