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Author: Michael Peech Publisher: Forgotten Books ISBN: 9780260455345 Category : Science Languages : en Pages : 34
Book Description
Excerpt from Methods of Soil Analysis for Soil-Fertility Investigations In some soils it is rather difficult to discriminate between the weathered rock and the soil; here the operator must use his own judg ment. Pick out and set aside any gravel, iron concretions, or rocks that may be present and combine later with the material that does not pass ythrough the 2 mm. Sieve. Repeat this process of crushing and sieving until only the primary particles and organic residues re main On the sieve. This coarse material may be discarded. Mix well the soil material passing the2 2-mm. Sieve and store in an airtight container. This constitutes the stock sample on which all the determinations here described are made. 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.
Author: Michael Peech Publisher: Forgotten Books ISBN: 9780260455345 Category : Science Languages : en Pages : 34
Book Description
Excerpt from Methods of Soil Analysis for Soil-Fertility Investigations In some soils it is rather difficult to discriminate between the weathered rock and the soil; here the operator must use his own judg ment. Pick out and set aside any gravel, iron concretions, or rocks that may be present and combine later with the material that does not pass ythrough the 2 mm. Sieve. Repeat this process of crushing and sieving until only the primary particles and organic residues re main On the sieve. This coarse material may be discarded. Mix well the soil material passing the2 2-mm. Sieve and store in an airtight container. This constitutes the stock sample on which all the determinations here described are made. 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.
Author: Edgar Richards Publisher: Forgotten Books ISBN: 9780260644893 Category : Languages : en Pages : 70
Book Description
Excerpt from Principles and Methods of Soil Analysis These several investigations have shown that the property Of absorb ing, retaining, and modifying the composition Of manures belongs to every soil in a greater or less degree. 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.
Author: Firman E. Bear Publisher: Forgotten Books ISBN: 9780656925070 Category : Science Languages : en Pages : 28
Book Description
Excerpt from Methods in Soil Analysis: Technical Bulletin Much importance has been attributed in recent years to the analysis of soils for total constituents. The literature covering the -methods for such analysis, while rather exten Sive, is scattered, and in many cases the methods described are not well suited to rapid routine practice. In View of these facts it has been thought that the compilation and publication Of the methods used and in part evolved in the soils laboratory of the West Virginia Agricultural Experiment Station may be of value to others desiring methods which are rapid and at the same time sufficiently accurate to meet the requirements Of most soil investigations. The methods are presented in. Sufficient detail to permit their employment by those who have not had extensive experience in quantitative work. 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.
Author: Eugene W. Hilgard Publisher: Forgotten Books ISBN: 9781528106115 Category : Science Languages : en Pages : 28
Book Description
Excerpt from Methods of Physical and Chemical Soil Analysis That the introduction of the grain-sizes coarser than mm. Can as a rule serve no useful purpose in the chemical analysis of soils in the humid region is strikingly shown in the investigation made by R. H. Loughridge, in 1873 (am. J. Sci., Jan. 1874, p. He found that in the case of a very generalized soil of the Mississippi uplands, solution by strong acid practically ceased beyond the sediment of mm. Hydraulic value, cor responding to a diameter of about mm. Although the general applicability of this particular limit may be fairly questioned, the wide margins between the fractions and renders it pretty certain that within the limit of the former we shall find all that is of any value to plants for their supply of mineral plant food. But for the sake of comparability with analyses made under a different rule, the grain-sizes of to 1 and 1 to 2 mm. Diameter should always be quantitatively determined. 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.
Author: J. Benton Jones, Jr. Publisher: CRC Press ISBN: 9780849302053 Category : Technology & Engineering Languages : en Pages : 268
Book Description
For more than 30 years, soil testing has been widely used as a basis for determining lime and fertilizer needs. Today, a number of procedures are used for determining everything from soil pH and lime requirement, to the level of extractable nutrient elements. And as the number of cropped fields being tested increases, more and more farmers and growers will come to rely on soil test results. But if soil testing is to be an effective means of evaluating the fertility status of soils, standardization of methodology is essential. No single test is appropriate for all soils. Soil Analysis Handbook of Reference Methods is a standard laboratory technique manual for the most commonly used soil analysis procedures. First published in 1974, this Handbook has changed over the years to reflect evolving needs. New test methods and modifications have been added, as well as new sections on nitrate, heavy metals, and quality assurance plans for agricultural testing laboratories. Compiled by the Soil and Plant Analysis Council, this latest edition of Soil Analysis Handbook of Reference Methods also addresses the major methods for managing plant nutrition currently in use in the United States and other parts of the world. For soil scientists, farmers, growers, or anyone with an interest in the environment, this reference will prove an invaluable guide to standard methods for soil testing well into the future. Features
Author: Michael Peech
Author: Michael Peech
Author: Michael Peech
Author: Edgar Richards
Author: Firman E. Bear
Author: Michael Peech
Author: 
Author: M Peech![Methods of Soil Analysis for Soil Fertility Investigations, Prepared by a Committee on Uniform Methods of Soil Analysis, M. Peech [and Others] PDF](https://books.google.com/books/content/images/frontcover/rHudGwAACAAJ?fife=w80-h100)
Author: Michael Peech
Author: Eugene W. Hilgard
Author: J. Benton Jones, Jr.