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Author: Bernard Howell Wilsdon Publisher: Forgotten Books ISBN: 9780428910457 Category : Technology & Engineering Languages : en Pages : 54
Book Description
Excerpt from Studies in Soil Moisture, Vol. 1 The appearance recently of a paper by B. A. Keen (j. A. Se, Vol. X, 44, which gives an admirable resume of the work so far published on the mportant subject of soil moisture, has caused me to consider it advisable to give a preliminary account of the lines of work on this subject which have been developed at Lyallpur since 1917. It is probably unnecessary to refer here to the overwhelming insistence of the demand in a Punjab irrigation colony for research into the problems presented by the agriculture of such tracts, which involve the elucidation of the factors controlling the movement of moisture in the soil. That any investigation into these problems involves an attack from many directions is obvious when the complexity of the subject is considered. But to wait for the final convergence of a series of independent lines of investiga tion unduly postpones the publication of ideas and results which may be of use to workers in the subject and which may interest others who may give assistance. I therefore make no apology for the fact that much of the work described hereinafter is at present very incomplete beyond the statement that I hope at not far distant dates to continue this paper in a series of parts, describing in detail the work which has been performed in each division of the subject. 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: Bernard Howell Wilsdon Publisher: Forgotten Books ISBN: 9780428910457 Category : Technology & Engineering Languages : en Pages : 54
Book Description
Excerpt from Studies in Soil Moisture, Vol. 1 The appearance recently of a paper by B. A. Keen (j. A. Se, Vol. X, 44, which gives an admirable resume of the work so far published on the mportant subject of soil moisture, has caused me to consider it advisable to give a preliminary account of the lines of work on this subject which have been developed at Lyallpur since 1917. It is probably unnecessary to refer here to the overwhelming insistence of the demand in a Punjab irrigation colony for research into the problems presented by the agriculture of such tracts, which involve the elucidation of the factors controlling the movement of moisture in the soil. That any investigation into these problems involves an attack from many directions is obvious when the complexity of the subject is considered. But to wait for the final convergence of a series of independent lines of investiga tion unduly postpones the publication of ideas and results which may be of use to workers in the subject and which may interest others who may give assistance. I therefore make no apology for the fact that much of the work described hereinafter is at present very incomplete beyond the statement that I hope at not far distant dates to continue this paper in a series of parts, describing in detail the work which has been performed in each division of the subject. 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 Buckingham Publisher: Forgotten Books ISBN: 9780265825051 Category : Languages : en Pages : 64
Book Description
Excerpt from Studies on the Movement of Soil Moisture It is clearly recognized that the analogy is imperfect in that the capillary potential and resistance to flow are dependent upon the moisture content of the soil, whereas electrical and thermal resistance are practically independent of the amount of current and heat passmg. Nevertheless this point of view and method of attacking the problem promise to become very helpful, and are believed to be a distinct advance In the treatment of a subject which has hitherto suffered on account of serio'us experimental difficulties and the lack of a coherent guiding theory. 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: E. J. Dortignac Publisher: Forgotten Books ISBN: 9780366724949 Category : Technology & Engineering Languages : en Pages : 292
Book Description
Excerpt from A Progress Report on the Development of Methods for Predicting Soil Moisture Content, Vol. 1 On the basis of recent research in the Department of Agriculture, particularly the Forest Service, certain basic concepts concerning soil moisture changes have developed.( 8 A thorough knowledge of these fundamental relations is necessary for an understanding of prediction methods described in this report as well as for proper evaluation of results and their applicability to other areas. 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: Lyman J. Briggs Publisher: Forgotten Books ISBN: 9780266859659 Category : Languages : en Pages : 102
Book Description
Excerpt from The Mechanics of Soil Moisture It is intended in this bulletin to present the application of certain dynamical principles to the problems attending the movement and retention of soil moisture. Among these problems may be mentioned the capacity of a soil for water, the adjustment of water between a dry and a wet soil, the relation of texture, structure, and temperature to the water capacity, and the effect of fertilizers upon the water content of a soil. 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: Walter M. Broadfoot Publisher: Forgotten Books ISBN: 9780364422113 Category : Technology & Engineering Languages : en Pages : 36
Book Description
Excerpt from Soil-Moisture Constants and Their Variation This paper summarizes the data gathered in the library and the field. The authors believe that it may be a useful reference for other researchers. For students, it may illustrate the fact that soil-moisture constants, far from being fixed, vary considerably with the physical condition of the soil. Some explanation is due of the procedure followed in compiling the information, together with some precautions as to its use. The data are from 901 samples of surface soil and 400 samples of subsoil. Data from published sources were combined with those obtained in studies at the Vicksburg Research Center. 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: David F. Olson Jr Publisher: Forgotten Books ISBN: 9780266840732 Category : Languages : en Pages : 38
Book Description
Excerpt from Methods of Soil Moisture Determination Under Field Conditions The determination of soil moisture under field conditions is of vital importance to the agronomist, forester, hydrologist, and engineer. Those dealing in the plant sciences are primarily interested in the amount of water that is available to plants under various environmental conditions; the hydrologist and engineer are also concerned with soil moisture existing in the range above the field capacity and below the permanent wilting percentage. Continuous soil moisture measurement is necessary for full understanding of the nature of soil moisture move ment, but limited studies of soil moisture are often needed as well. 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: Elmer O. Fippin Publisher: Forgotten Books ISBN: 9780267291557 Category : Business & Economics Languages : en Pages : 42
Book Description
Excerpt from Soil Moisture and Crop Production The correction for this consists in creating a granular, or flocculated, condition Of the soil, so that a number Of small particles act together like a single larger particle. Granulation is important. The most effective size of granule ranges from the size Of corn kernels to that Of timothy seed. Inevitably there will be considerable finer material, SO that the mass will have a loamy structure. By loosening the soil, Opportunity is given for the maximum thickness of films and the largest proportion Of available water. 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: Marlowe D. Thorne Publisher: Forgotten Books ISBN: 9781528521703 Category : Technology & Engineering Languages : en Pages : 24
Book Description
Excerpt from Soil Moisture Evaluation Figure II shows the release curves for these same three soils, but plotted with moisture content expressed as percents available moisture (held at tensions between 15 atmospheres and atmosphere). If we look at the tensions corresponding to 50 percent available moisture for the three soils, we find that for the clay it is h.5 atmospheres; for the 10mm 2 atmospheres, and for the sand atmos pherae. This information is arranged in Table I for various available moisture percentages. 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: United States Department Of Agriculture Publisher: Forgotten Books ISBN: 9780332615516 Category : Business & Economics Languages : en Pages : 26
Book Description
Excerpt from Soil Moisture: A Record of the Amount of Water Contained in Soils During the Month of June, 1895 The records showing the conditions in the West are all commented upon directly under the diagrams. AS a rule, during th1s favorable season the fields under ordinary cultivation and those which had been subsoiled and subsequently cultivated do not Show very different mois ture conditions. In some places the-effect of cultivation is not appar ent upon the moisture content of Soils. For reasons which have already been, given it is not to be expected that cultivation would Show a very marked effect upon the amount of. Moisture in the soil either in a very dry season or in a very favorable sea-son with frequent rains. The time when it would have its maximum effect would be after a wet season and when a dry period was coming on. The moisture content at this time should fall much more gradually in the cultivated than in the uncultivated land. This is shown to a slight extent in some of the records, but not to such an extent as would seem likely to occur under the most intelligent Cultivation of the soil. The small amount of data which has been collected is not sufficient, however, to warrant a close and final judgment in this matter. 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: Ralph C. Moyle Publisher: Forgotten Books ISBN: 9780266765615 Category : Languages : en Pages : 24
Book Description
Excerpt from Soil Moisture as Affected by Stand Conditions Figure 1. -the all-aged loblolly-shortleaf pine area.and southern red oak, of all sizes up to about 20 to 30 feet in height and 8 inches (1. B. H. Other oaks, dogwood, hawthorn, and vaccinium species are also present. 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: Bernard Howell Wilsdon
Author: Bernard Howell Wilsdon
Author: Edgar Buckingham
Author: E. J. Dortignac
Author: Lyman J. Briggs
Author: Walter M. Broadfoot
Author: David F. Olson Jr
Author: Elmer O. Fippin
Author: Marlowe D. Thorne
Author: United States Department Of Agriculture
Author: Ralph C. Moyle