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 Fertility of Soils As Affected by Manures written by United States. Department of Agriculture and published by . This book was released on 1907 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fertility of Soils as Affected by Manures written by Frank D. (Frank Duane) Gardner and published by . This book was released on 2017-08-23 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Fertility of Soils as Affected by Manures written by Frank Duane Gardner and published by . This book was released on 1908 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Fertility of Soils as Affected by Manures Primary Source Edition written by Frank D. (Frank Duane) Gardner and published by Nabu Press. This book was released on 2014-03 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
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 Soil Fertility and Permanent Agriculture written by Cyril G 1866-1919 Hopkins and published by Franklin Classics. This book was released on 2018-10-13 with total page 700 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 Fertilizers Classic Reprint written by David William May and published by Forgotten Books. This book was released on 2018-09-09 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Fertilizers What then is the first duty of the agriculturist in Porto Rico indeed, what is the prime necessity? It is to bring back to the land some' of the old-time fertility which gave to the island the name Porto Rico - 4rich port. The elements of plant food most likely to be needed in soils are nitrogen, phosphorus, and potash. Very poor soils, like most of those found in' Porto Rico, need all three of these, and in many instances lime also. 'therefore, in improving the soil we must seek out and apply especially all the nitrogen, phosphorus, and potash that we can find. Upon the application of these to our fields depends the future prosperity of the island. Let us then look to the sources from which we can obtain these elements. Of fertility. 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 A. D. Hall and published by Forgotten Books. This book was released on 2017-09-17 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Fertility of the Soil: Being the Seventeenth Robert Boyle Lecture Delivered Before the Oxford University Junior Scientific Club on the 3rd of June, 1910 Becomes a noxious beast of prey. Since the publication of these views of the functions of protozoa in the soil, confirmatory evidence has been obtained from various sources. For example, men who grow cucumbers, tomatoes, and other plants under glass are accustomed to make up extremely rich soils for the extensive culture they practise, but despite the enormous amount of manure they employ, they find it impossible to use the same soil for more than two years. Then they are compelled to introduce soil newly taken from a field and enriched with fresh manure. Several of these growers have observed that a good baking of this used soil restores its value again in fact it becomes too rich and begins to supply the plant with an excessive amount of nitrogen. It has also been pointed out that it is the custom of certain of the Bourbay tribes to burn vegetable rubbish, mixed, as much as possible, with the surface soil, before sowing their crop, and the value of this practice, though forgotten in European agriculture, is still on record in the books on Roman agriculture. We can go back to the Georgics again, and there find an account of a method of heating the soil before sowing, which has only received its explanation within the last year, but which in some form or other has got to find its way back again into the routine of 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 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.
Download or read book The Fertility of the Land written by Isaac Phillips Roberts and published by Forgotten Books. This book was released on 2018-04-25 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Fertility of the Land: A Summary Sketch of the Relationship of Farm-Practice to the Maintaining and Increasing of the Productivity of the Soil Director of the College of Agriculture and Professor of Agriculture in the Cornell University. 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 Manures and Fertilizers written by Frank T. Shutt and published by Forgotten Books. This book was released on 2018-08-11 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Manures and Fertilizers: Their Nature, Functions and Application Before entering upon the discussion of the subject matter proper it will be well to, briefly emphasize the importance of increasing or at least maintaining soil fertility, if farming is to be made profitable. Continuous cropping, even on soils of the finest quality, without a concomitant return of plant food and the return of humus-forming material must result in soil impoverishment and decreased crop yields. 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 Manures Their Composition Preparation and Action Upon Soils written by Campbell Morfit and published by Forgotten Books. This book was released on 2016-09-28 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Manures, Their Composition, Preparation, and Action Upon Soils: With the Quantities to Be Applied; Being a Field Companion for the Farmer The qualitative and quantitative adaptation of all the various manures, their composition, relative value, modes of preparation and behaviour, are fully considered; and the incidental and expressive tabular matter with which the Book is further en riched, render it emphatically the Farmer's Guide Book and Field Companion. 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.
