Download or read book Soils and Soil Fertility Classic Reprint written by Andrew Robeson Whitson and published by Forgotten Books. This book was released on 2017-09-17 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soils and Soil Fertility The business of the farmer is to produce the various food materials and those from which clothing is made. These materials are of both animal and vegetable origin; but since all agricultural animals must depend on vegeta tion for their food, the growth Of farm crops forms the basis of all agriculture. 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.

Download or read book First Principles of Soil Fertility Classic Reprint written by Alfred Vivian and published by Forgotten Books. This book was released on 2018-02-07 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from First Principles of Soil Fertility This little book is intended primarily for home read ing. It is written, however, largely from lecture notes used by the author in a course in soil fertility given to winter course students, and, therefore, will be found to be a suitable text for short courses. It is an at tempt to present in non-technical language a subject of great scientific and practical interest to the farmer. The subject of Soil Fertility is so large, that each phase of it could of necessity be only briefly considered in a small book, and the writer did not pretend to make the discussion of any topic exhaustive. For this reason some things have been omitted which might have been discussed with profit in a larger work. Only the more important facts concerning the maintenance of fertility have been presented, but it is believed that the statements so far as they go are in accord with the best scientific thought and practice of the day. 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.

Download or read book The Fertility of the Soil written by Edward John Russell and published by . This book was released on 1913 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Fertility Laboratory Manual Classic Reprint written by Cyril G. Hopkins and published by . This book was released on 2015-07-21 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soil Fertility Laboratory Manual Note. - The student practices described in this laboratory manual are the result of five years experience by the authors in conducting classes in a course of study in soil fertility. With some modifications the usual chemical methods are employed, specific chemical directions being commonly based upon those adopted by the Association of Official Agricultural Chemists. Otherwise these practices were originated in this University. The increasing number of students in this institution, and the fact that some other institutions also desire to use our manual, induced us to put it in printed form. Suggestions from other teachers of soil fertility regarding possible improvements in the manual will be gladly received. 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.

Download or read book Laboratory Manual for Soil Fertility Classic Reprint written by Cyril G. Hopkins and published by Forgotten Books. This book was released on 2018-01-17 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Laboratory Manual for Soil Fertility The increasing number of students in this institution, and the fact that some other institutions also desire to use our manual, induced us to put it in printed form. 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.

Download or read book Soil Fertility and Permanent Agriculture written by Cyril George Hopkins and published by Franklin Classics. This book was released on 2018-10-13 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Certain Organic Constituents of Soils in Relation to Soil Fertility Classic Reprint written by Oswald Schreiner and published by Forgotten Books. This book was released on 2017-11-19 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Certain Organic Constituents of Soils in Relation to Soil Fertility This same bad effect of root excretions is also shown bv the effect of trees on wheat growing in conjunction with them, and is further illustrated by the poisonous effect. Which grass roots sometimes have on apple trees when sod is allowed to form in orchards. 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.

Download or read book Soil Fertility and Fertilizers Classic Reprint written by James Edward Halligan and published by . This book was released on 2015-07-06 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soil Fertility and Fertilizers This book has been written to be within reach of the student, farmer, manufacturer and other persons interested in the subject of "Fertilizers." Technical terms have been omitted as much as possible. It has been the aim of the writer to bring this subject up to date, not only from the manufacturers viewpoint but from the actual field results as well. A full discussion of the data in the tables has necessarily been avoided so as not to make the book too voluminous. 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.

Download or read book The Organic Constituents of Soils Classic Reprint written by Oswald Schreiner and published by Forgotten Books. This book was released on 2017-12-04 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Organic Constituents of Soils The soil is not simple, but complex. The soil properties and functions are likewise complex, not simple. All of the investigators preceding me in this symposium have emphasized to you by their papers how complex the subject is and how much remains to be done before a clear insight is Obtained, but they have also shown to you clearly that a well-trained army of scientists is at work on the prob lems connected with soil fertility, applying. Thereto all the principles of modern science. The Old view was simplicity itself; the soil was a mere trough in which the plant found its nourishment. But I can do no better than to let Liebig speak for himself. I quote from Letter XII of his Familiar Letters on Chemistry A field in which we cultivate the same plant for several successive years becomes barren for that plant in a period varying with the nature of the soil; in one field it will be three, in another seven, in a third twenty, in a fourth a hundred years. One field bears wheat and no peas; another beans and turnips but no tobacco; a third gives a plentiful crop of turnips but will not bear clover. What is the reason that a field loses its fertility for one plant, the same which at first flourished there? What is the reason one kind of plant succeeds in a field where another fails? 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.

Download or read book Soil Fertility Second Edition written by Boyd Ellis and published by CRC Press. This book was released on 1996-12-10 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils are one of the world's most important resources, and their protection, maintenance, and improvement is critical to the continuance of life on earth. Soil Fertility, Second Edition, offers thorough coverage of the fertility, composition, properties, and management of soils. This book carries on the tradition of excellence established by authors Henry Foth and Boyd Ellis, leading soil scientists whose previous books in this field have become multi-edition classics. The Second Edition of Soil Fertility has been significantly expanded to include more information on mineralogy, while keeping the thorough coverage of essential topics. The book presents soils as dynamic, constantly changing bodies, and relates soil fertility and management to the mineralogy of their origin. Four new chapters offer updated information on soil charge properties, ion adsorption, exchange and fixation, and soil reaction. There is also a far greater emphasis on environmental issues, reflecting the increasing importance of environmental concerns to agronomists and soil scientists today.

Download or read book Commercial Fertilizers and Soil Fertility in California Classic Reprint written by Paul Llewellyn Hibbard and published by Forgotten Books. This book was released on 2018-03-19 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Commercial Fertilizers and Soil Fertility in California When any one of the elements, nitrogen, phosphorus, or potassium, is so lacking that growth of plants is much restricted, it is spoken of as the limiting factor if there is. An adequate supply of the other two. In case the supply of either of the two is low, one of them may become the limiting factor in plant growth, after the supply of the previously deficient element is made adequate. The important. Point is to produce a favorable condition in the soil for the growth of plants by adding that element in which the soil. Is deficient. In the majority of cases, California. Soils are most likely to be deficient in nitrogen. 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.

Download or read book Soil Fertility Studies with Special Reference to Certain Soils of St Clair County Illinois written by Gustave Herman Eidmann and published by Forgotten Books. This book was released on 2018-05 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soil Fertility Studies, With Special Reference to Certain Soils of St. Clair County, Illinois: Thesis The object of these investigations was to determine the value of adding lime, nitrogen, phosphorus and potassium.to each of these types of soils, for the growing of wheat. The object was later ex tended and a crop of millet grown after the Wheat had been harvested. The first series of pot cultures, which was called the A series was prepared to determine whether or not these elements of fertility when added slightly in excess are of any value to the soils under consideration for the production of the above mentioned crops, While the second or B series was intended to indicate in what amounts it is profitable to add the elements which prove to be of value in series A. 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.

Download or read book Soils and Soil Cultivation written by Frank D. Gardner and published by Forgotten Books. This book was released on 2018-01-30 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soils and Soil Cultivation: A Non-Technical Manual on the Management of Soil for the Production and Maintenance of Fertility The subject-matter is arranged in two parts of a number of chapters each, and by referring to the Table of Contents any subject may be quickly found. References are freely given at the close of each chapter. Each chapter has been prepared by a specialist in the subject presented. The name of the author appears at the beginning of each chapter. Those unacknowledged have been prepared by myself. The illustrations have been secured from many sources. Due credit has been given these. Special acknowledgment is due the publishers of this volume and the other volumes in the series for their conception, and for many helpful suggestions in the presentation of its subject-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.

Download or read book The Relation of Fertilisers to Soil Fertility Classic Reprint written by Frederick Bickell Guthrie and published by . This book was released on 2015-07-07 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Relation of Fertilisers to Soil Fertility Recent investigations have brought to light a host of other causes of infertility, but the idea still persists at the back of many soil analyses, that the determination of the amount of certain specified plant-foods, dissolved by specific solvents from the soil, is a certain guide to the nature of the manuring required. As a matter of fact, neither the chemical composition of the soil nor of the crop affords any certain foundation on which advice as to manuring can be based. A. D. Hall and E. J. Russell, dealing with the results of a soil survey of the south-eastern counties of England, draw, amongst other general conclusions, the following which have special reference to the connection between the composition of the soil and plant: "We are not as yet in a position to deduce the agricultural properties of a soil, either its behaviour under cultivation or its adaptability to particular crops, except in the roughest general fashion." In dealing with a number of typical wheat-soils the authors say, "chemical analysis of these soils revealed no connection between their chemical composition and their suitability for wheats," and the same remark applies no doubt to other crops. They also point out that excess or deficiency of any particular plant-food, such as nitrogen, does not necessarily imply a fertile or infertile soil. Even in the case of calcium carbonate, they show that many soils poorly supplied with this ingredient are not benefited by the application of lime, whereas for other soils examined, containing the same or a greater proportion, liming is essential. They find that, "other things being equal, dry soils are more likely to respond to potassic manuring than others better supplied with water, but no richer in available potash." The same applies to phosphoric acid. "Little, if any, direct connection can be traced between the phosphoric acid and the productiveness." As far as regards the value of soil-analysis, as a basis on which to afford advice as to soil treatment, I have no reason to alter the opinion expressed in a paper on "Soil Analysis," read before this Association at the Brisbane meeting, 1895, wherein the view is expressed that a rational scheme of soil-analysis which shall attempt rather to determine the factors influencing fertility than to elaborate methods for determining the chemical constitution of the soil, can be made of considerable value to the farmer. This statement has been amply borne out by experience, and to day the analysis of farmers soils on the lines then laid down is one of the functions of the Department most regularly availed of by farmers. In spite of all the labour expended for many years on this subject, manuring still remains very largely empirical in its nature. We know, in a broad and general way, that a soil deficient in plant-food is not likely to produce good crops without manuring, and that a soil rich in plant-food is likely to prove a fertile one. But much further than this we cannot go. If a soil is well supplied with, say nitrogen and potash, but poor in phosphates, it by no means follows with any certainty that it will be benefited by phosphatic manuring. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com

Download or read book Soils and Fertilizers Classic Reprint written by T. Lyttleton Lyon and published by Forgotten Books. This book was released on 2018-02-10 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soils and Fertilizers The attempt has been made so to present the subject that the pupil who has no knowledge of chemistry or other natural science will be able to understand it. No chemical symbols or formula: have been used. Use has been freely made of a limited number of names of chemical substances contained in commercial fertilizers which contribute to the nutrition of plants. These, however, are terms with which the pupil can familiarize himself as readily as with the geographical and other names that he has already mastered. 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.

Download or read book Fertility of Soils as Affected by Manures Classic Reprint written by Frank Duane Gardner and published by Forgotten Books. This book was released on 2018-09-09 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Fertility of Soils as Affected by Manures The use of manures as a means of increasing the growth of crops dates back to ancient times. At the time of the discovery of America, the North American Indians used dead, fish as a manure for corn. The Peruvians have used guano since the beginning of their recorded history, and the Chinese have long recognized the value of all kinds of excrements as fertilizers. In the early part of the last century De Saussure established the existence of the mineral constituents Of the' soil in plants, and while he believed that they Were essential to the life of plants, his contemporaries regarded them as nonessential, or at the best useful only as a kind of Stimulant. 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.

Download or read book Investigations in Soil Fertility Classic Reprint written by Milton Whitney and published by Forgotten Books. This book was released on 2017-10-27 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Investigations in Soil Fertility In a broad sense a fertile soil has been taken to mean one which usually produces a large crop. The yield would thus be a measure of fertility. The yield, however, 18 dependent not only upon the condition and properties of the soil, but upon the climatic conditions as well. In a more restricted sense some agricultural investigators have endeavored to approximate the fertility of soils from the results of chemical analyses, recognizing that the yield of crops is not a measure of fertility, as the yield is dependent upon the kind of, crops adapted to a particular Soil, upon the texture of thesoil itself, present mechan ical conditions drainage conditions, suitable climatic conditions, and efficient methods of cultivation. It is in a similarly restricted sense that the term will be used in this bulletin; that is to say, fertility is the inherent power of a soil to produce and support a satisfactory crop under favorable climatic conditions and suitable cultivation. To what this inherent power may be due, whether to definite amounts of plant food or to other causes, need not be more specifically stated at this point. Using fertility in this restricted sense, the conditions of climate, drainage, and cultivation, being more or less incidental and variable, would affect the yield but not necessarily the fertility 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.