Download or read book Fertilizers in Relation to Soils and Crop Production Classic Reprint written by Robert Harcourt and published by Forgotten Books. This book was released on 2017-10-28 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Fertilizers in Relation to Soils and Crop Production Is required. He must also know something about the available supply of plant foodinthesoflandthenatureofthefertilizerbeinguaed.thesefem'tilizereare. 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 Chemistry of the Soil as Related to Crop Production Classic Reprint written by Milton Whitney and published by Forgotten Books. This book was released on 2017-11-20 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Chemistry of the Soil as Related to Crop Production The objects to be attained in the management of a soil are the deter mination of the crop or crops adapted to it, the regulation Of the yield, and the control of the quality of the product. The investigations made by the Bureau of Soils during the last ten years have Shown that the economic distribution of crops is dependent mainly upon the physical characteristics of soils and upon climate. It has been believed that the chemical characteristics of soils have a more or less direct and controlling influence on the yield Of a crop On any particular soil; that is to say, where wheat yielded 10 bushels per acre in one field, and in an adjoining field (the soil of which had the same texture, so far as could be determined, although it might be in a better physical condition) 25 or 30 bushels were Obtained, this difference in yield would be found to be due to or associated with a difference in the amount of available plant food in the soil of the two fields. It was believed, further, that the better physical condition resulting through loosening up and aerating the soil and exposing it to the weathering influence of the atmosphere by better and more thorough methods Of cultivation would in itself prepare a larger amount of readily available food material for the use of crops. These two subjects, distribution and yield, are both of vital impor tance to the farmer; but While the yield of crops has been a study for the experimenter and farmer alike throughout historic times, too little attention has been paid by him to the adaptation of particular soils to crops. The yield is to-day the paramount question with the farmer, and all his energy and resources in the last analysis tend to this end. 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 Homer J. Wheeler and published by Forgotten Books. This book was released on 2018-02-07 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Manures and Fertilizers: A d104-Book for College Students and a Work of Reference for All Interested in the Scientific Aspects of Modern Farming Care has been taken to discuss the reasons for many of the conflicting Opinions on various subjects, in the belief that those entering upon agricultural research work should be taught to give such matters more careful consideration than is frequently the case. No apology is offered by the writer for the frequent refer ence to certain lines of research work at the Rhode Island agricultural experiment station, for the reason that he can speak of these results in a more authoritative way than of work done elsewhere. Furthermore, the work has been, in some respects, of a pioneer character, and has not been duplicated. In certain of the chapters matter will be found which is of too theoretical a character to meet the needs of the casual reader, and he is requested to pass it over charitably, remem bering that the prime object of this work is not to give rule of-thumb directions, but rather to aid in inculcating such general principles as shall aid in making the student as independent as possible of them, and at the same time fur nish a foundation upon which to base his future study of the various relations of fertilizers and manures to soils and crops. 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 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 Handbook of Fertilizers Their Sources Make Up Effects and Use written by A. F. Gustafson and published by Read Books Ltd. This book was released on 2013-05-31 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This vintage book contains extensive information on fertilisers, exploring their various ingredients, how they are used, what they do, and much more. A veritable encyclopaedia on the subject, “Handbook of Fertilizers” contains much information that will be of use to the modern farmer or gardener, and it would make for a fine addition to collections of related literature. Contents include: “Requirements For Plant Growth”, “Nitrogeneous Fertilizer Materials”, “Phosphatic Fertilizer Materials”, “Potash Fertilizer Materials”, “Effects Of Fertilizers On”, “Crops And Soils”, “Factory-Mixed Fertilizers”, “Home-Mixing Of Fertilizers”, “Purchase And Use Of Fertilizers”, etc. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with a specially-commissioned new introduction on soil science.
Download or read book Soils and Fertilizers for Public Schools written by Charles Lorin Quear and published by Forgotten Books. This book was released on 2016-08-19 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soils and Fertilizers, for Public Schools: A Discussion Upon the Nature and Treatment of Soils and the Value of Fertilizers There has been much ob eet'ion to the teaching of Agriculture in our District Schools, because teachers claim they do not have time to take up an additional subject, when they have so many subjects that are already required, and which must be taught. However, in recent years Agriculture has been coming into its own, and is being taught more and more in the schools. Teachers have begun to realize that any subject which holds the interest and attention of the pupils is worthwhile, and that any sub ect which does not hold their attention is not worthy of a place in our already crowded School course. In order to make Agriculture interesting to the pupil, we must base the work upon real practical problems which he can understand and appreciate. To do this is no small task, and it is a thing which demands a great deal of perseverance and initiative, on the part of teachers In such schools. The more ideas which an author attempts to incorporate into a text book, the more complex his text becomes, and the more difficult it is to follow. Therefore, in this text book we have taken' only a few of the most important conditions and have tried to incorporate them in such a manner that they can be used by the average district or graded school. We have tried further to make the book correct - theoretically and practically. The entire text has been written for boys and girls of the country schools, with these two things in mind, and the success which attends its use presupposes a proper presentation of many minor details, which it would be impossible to include under this cover. Many teachers get the idea that the sub ect of Agriculture as taught in our public schools is a Vocational Sub ect. This is' a mistaken idea, and the teachers should above all bear in mind that we are not making better farmers so much as we are making better men and women who are farmers. Naturally the teaching of Agriculture will make better farmers, and will serve to keep more of our boys on the farm. 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 Fertilizers Classic Reprint written by Harry Snyder and published by Forgotten Books. This book was released on 2015-07-05 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Soils and Fertilizers The discovery of oxygen by Priestley in 1774, of the composition of water by Cavendish in 1781, and of the role which carbon dioxide plays in plant and animal life by De Saussure and others in 1800, formed the nucleus of our present knowledge regarding the sources of matter stored up in plants. It was between 1760 and 1800 that alchemy lost its grip because of advances in knowledge and the way was opened for the development of modern chemistry. 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 Fertilizers and Their Use Classic Reprint written by Robert Harcourt and published by Forgotten Books. This book was released on 2018-03-17 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Fertilizers and Their Use On our comparatively new lands, and in general farm practice where a judicious rotation of crops is followed. And where grain is fed on the farm and the manure properly cared for, it may not be necessary to use commercial fertilizers; but where the nature of the crops grown prevents rotation, and where very little farmyard manure is produced, they may be required. More and more each year it is found that the increased cost of production and the consequent need of producing maximum crops, and the growing demands of the larger towns and cities for garden and fruit products of high quality, are causing market gardeners and fruit growers to consider seriously the advisability of using some form of fertilizer. This has created a demand for information concerning these substances which it has not been easy to fill; for experience has shown that the farmer must posses a wide knowledge of plants, soils and the fertilizers themselves before he can properly use them. To intelligently and economically use fertilizers, it is essential that the farmer understand the needs of the cr0ps, their power to gather the essential plant food constituents from the soil, and the purpose of their growth, i.e., whether the object is to produce an immature plant for early market, or whether maturity is required. He must also know something about the available supply of plant food' tn the soil and the nature of the fertilizer being used. These fertilizers are expensive, and unless they are intelligently applied in conjunction with very thorough cultivation they will not give their best results. They cannot take the place of cultivation; for they are food materials, and can only aid the growth of the plant as they are absorbed by the roots, and these cannot develop fully in a poorly cultivated 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 Fertilizers written by Ontario. Department of Agriculture and published by . This book was released on 1914 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fertilizers Vol 87 Classic Reprint written by United States Department Of Agriculture and published by Forgotten Books. This book was released on 2018-04-27 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Fertilizers, Vol. 87 I have the honour to submit herewith for your consideration Bulletin N O. 87, entitled Fertilizers, which has been prepared by W. Newton, Chief Soil and Crop Instructor, under the direction of Dr. D. Warnock Deputy Minister 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 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 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 Vithumus Doctrine of Soil Treatment Soil Up Building written by R. W. Gamble and published by Forgotten Books. This book was released on 2018-02-04 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Vithumus Doctrine of Soil Treatment, Soil Up-Building: The Proper Agricultural Relations of Vithumus and Fertilizers The first instances of intensive farming, were along the val leys of the Nile, the Tigris and Euphrates rivers; either upon lands exposed to periodic overflow. Or upon those to which the river water was brought by irrigation: the fertility of such inundated or irrigated soils was phenomenal. But the reasons therefor were not fully understood. 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 and Fertilizer Concepts and Practices written by 楊秋忠 and published by Airiti Press. This book was released on 2015-01-14 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture builds upon the integration of crops and the environment, with which its yield depends strongly on a healthy soil foundation. With that in mind, the knowledge of the soil and fertilizer is crucial to maintaining an environment with optimal nutrients, water and oxygen for crop production. Soil is one of human's precious resources, the protection and nurturing of our soil is thus an integral part of sustainable development. Effective soil management is considered not only a technology, but also an art. In practice, to make use the full potential of the land, the management strategies need to take account of the differences and characteristics of the soil, plant and climate that are unique to each geographical location. Such an approach is increasingly more important nowadays because of the increasing loss of cultivable land and need of high quality agricultural products.
Download or read book Manual of Agriculture for Secondary Schools written by O. Barto and published by Forgotten Books. This book was released on 2015-06-30 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Manual of Agriculture for Secondary Schools: Studies in Soils and Crop Production We are making educational history these days at a rapid rate, and not the least important chapter is on the new status of affairs industrial. At last agriculture is coming into its own, and it will not be many years until this subject will have taken its place in the American secondary school system as it is now taking its place within the colleges and universities. This is not only because agriculture employs the time and absorbs the lives of a third of our people and feeds us all; it is not only because the future and the development of every people is limited by the production of the soil it occupies; it is not only because it is expedient from the community standpoint that this subject should be studied by young people and developed by science; it is largely because, after all, the subject-matter of agriculture, its method and its outlook, are exceptionally valuable in their influence upon the individual, educationally. Elsewhere I have written, It is dangerous to attempt to educate a live boy with no reference to the vocational, and I might add that it is dangerous to the community, as it is unprofitable to the individuals, to fill our schoolhouses day after day with young men and women to study seriously all the problems of life except the one supreme problem of how to make a living, a large and significant portion of which problem from the racial standpoint is comprised within the range of farming and farm life. 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 Fertilizers for Cotton Soils Classic Reprint written by Joshua John Skinner and published by Forgotten Books. This book was released on 2018-01-08 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Fertilizers for Cotton Soils In four States of the southeastern Cotton Belt - North Carolina, South Carolina, Georgia, and Alabama tons of commercial fertilizers were used, amounting to 69 per cent of all the fertilizers used on this crop in the United States. In Table 1 the 1930 statistics are given, showing the acreage planted to cotton, acre yields and amounts of fertilizers used in growing cotton in all the Southern States. Fertilizers have long been recognized as an especially important factor in cotton production in the Southeastern States. In this belt the amount of cotton land fertilized ranged in different States from to 97 per cent of the acreage in cotton in 1930. The average quantity used per acre varied from 262 pounds in Alabama to 425 pounds in North Carolina. The average acre yield of lint cotton in the several States of the southeastern group ranged from 188 pounds in Alabama to 233 pounds in North Carolina. 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.
