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Author: Edward Burnett Voorhees Publisher: Forgotten Books ISBN: 9780428973025 Category : Science Languages : en Pages : 118
Book Description
Excerpt from A Review of Investigations in Soil Bacteriology Soil fertility, broadly interpreted, denotes the crop-producing power of any soil under given climatic conditions, and is itself the resultant of many forces often opposed to one another. It'is no easy task to establish the correlation of these several forces, and to assign to each its true position as a factor in the creation of plant substance. We do know that suitable moisture and temperature conditions are indispensable not only for the absorption and assimi lation of the plant food in the soil, but also for the formation of this plant food. Granting, however, that the moisture and tem perature conditions are suitable, our inquiry is at once directed toward the ways and means whereby the soil is made to yield nour ishment to the plants growing upon it. Obviously, an intimate knowledge of the ways and means of plant-food production is, aside from its theoretical interest, of great practical concern, a fact which is exemplified by the benefits derived by our agricultural industries from the researches of the agricultural chemist. It was through the investigations of the latter that we have learned to know the con crete meaning of the term plant food, and have learned also to apply this knowledge to the incalculable advantage of society. But as the rapidly accumulating experimental data broadened. His horizon, the agricultural chemist was the first to recognize that chemical methods alone were wholly inadequate for a clear comprehension of the complicated processes occurring in arable soils. The keen insight of Hilgarda revealed the vast possibilities that lay in the joint application of chemical and physical methods in the study of soil fertility problems, and the splendid contributions of soil physics to scientific agriculture bear testimony to the soundness of his judgment. 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: Edward Burnett Voorhees Publisher: Forgotten Books ISBN: 9780428973025 Category : Science Languages : en Pages : 118
Book Description
Excerpt from A Review of Investigations in Soil Bacteriology Soil fertility, broadly interpreted, denotes the crop-producing power of any soil under given climatic conditions, and is itself the resultant of many forces often opposed to one another. It'is no easy task to establish the correlation of these several forces, and to assign to each its true position as a factor in the creation of plant substance. We do know that suitable moisture and temperature conditions are indispensable not only for the absorption and assimi lation of the plant food in the soil, but also for the formation of this plant food. Granting, however, that the moisture and tem perature conditions are suitable, our inquiry is at once directed toward the ways and means whereby the soil is made to yield nour ishment to the plants growing upon it. Obviously, an intimate knowledge of the ways and means of plant-food production is, aside from its theoretical interest, of great practical concern, a fact which is exemplified by the benefits derived by our agricultural industries from the researches of the agricultural chemist. It was through the investigations of the latter that we have learned to know the con crete meaning of the term plant food, and have learned also to apply this knowledge to the incalculable advantage of society. But as the rapidly accumulating experimental data broadened. His horizon, the agricultural chemist was the first to recognize that chemical methods alone were wholly inadequate for a clear comprehension of the complicated processes occurring in arable soils. The keen insight of Hilgarda revealed the vast possibilities that lay in the joint application of chemical and physical methods in the study of soil fertility problems, and the splendid contributions of soil physics to scientific agriculture bear testimony to the soundness of his judgment. 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: Selman Abraham Waksman Publisher: Forgotten Books ISBN: 9781396177835 Category : Science Languages : en Pages : 966
Book Description
Excerpt from Principles of Soil Microbiology This book is a collection of known facts concerning microorganisms found in the soil and their activities; it is a study of the literature dealing with the science in question; it is an interpretation of the facts already presented; it indicates the various lines of investigation and notes where further information is especially wanted. Soil microbiology is a science which is at the very base of our understanding of agricultural processes and the practice of agriculture; it comprises a number of sciences. The book may, therefore, be looked upon more as an introduction to further research rather than as an ordinary text-book; as of help to those work ing in the allied sciences, who are desirous of obtaining some information concerning the soil population and its activities. If this volume will help to disclose to the reader some of the numerous interrelated processes in the soil, if it will present in a clearer light to the chemist, the physiologist, the botanist, the bacteriologist and the zoologist the nature of the many scientific and practical problems awaiting the investigator, if it contributes in a small measure toward making soil science an exact science, the author will feel that he has been amply rewarded. 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: Edwin B. Fred Publisher: Forgotten Books ISBN: 9780265473160 Category : Science Languages : en Pages : 182
Book Description
Excerpt from A Laboratory Manual of Soil Bacteriology Journal of Industrial and Engineering Chemistry, vol. I, 1909. Journal of Infectious Diseases, vol. I, 1904. 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: Jacob Goodale Lipman Publisher: ISBN: 9781330457283 Category : History Languages : en Pages : 98
Book Description
Excerpt from Laboratory Guide in Soil Bacteriology Bacteriology has contributed, within the past few years, some important facts to our rapidly expanding knowledge of soils. It has shed a new light on the transformation and accumulation of nitrogen compounds in tilled land, as well as in uncultivated forest and prairie soils. It has taught us to understand more clearly the decomposition of cellulose and allied compounds, and the conservation of the potential energy of hydrogen and of methane. It has given the student of soils and of soil fertility a number of new methods for measuring differences in the quality and quantity of plant-food. It bids fair to supply us with still other methods that would be more adequate than any chemical methods yet devised, for the investigation of fundamental problems of soil fertility. In view of the past achievements of soil bacteriology and of the promise of even greater usefulness in the future, no apology is needed for the publication of this little volume. The authors have felt, for some time, that there is room in every well-arranged course in soils for a series of exercises in soil bacteriology, and have, therefore, made the attempt to provide them. It is their hope that after preliminary instruction in general bacteriology and laboratory technique the "Guide" will prove useful to students of soils, and that time and service will permit the elimination of the imperfections and inadequacies that undoubtedly exist in it. Toward this end, friendly criticism will be appreciated. Meanwhile, the authors wish to express their indebtedness to Dr. R. E. Buchanan, of the Iowa State College, for many helpful suggestions. 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: Karl Frederic Kellerman Publisher: Forgotten Books ISBN: 9781391280417 Category : Languages : en Pages : 44
Book Description
Excerpt from Bacteriological Studies of the Soils of the Truckee-Carson Irrigation Project A description Of the truckee-carson Experiment Farm, at Fallon, Nev., upon which practically all Of the work herein reported Was con ducted, is given in a previous bulletin Of this Bureau.1 The designa tions of the small plats. From which samples were taken for bacterio logical study and their location are Shown in figure 1. 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: Stefan Geisen Publisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG ISBN: 9783838151571 Category : Languages : en Pages : 328
Book Description
Protists are by far the most diverse and abundant eukaryotes in soils. Nevertheless, very little is known about individual representatives, the diversity and community composition and ecological functioning of these important organisms. For instance, soil protists are commonly lumped into a single functional unit, i.e. bacterivores. This work tackles missing knowledge gaps on soil protists and common misconceptions using multi-methodological approaches including cultivation, microcosm experiments and environmental sequencing. In a first part, several new species and genera of amoeboid protists are described showing their immense unknown diversity. In the second part, the enormous complexity of soil protists communities is highlighted using cultivation- and sequence-based approaches. In the third part, the present of diverse mycophagous and nematophagous protists are shown in functional studies on cultivated taxa and their environmental importance supported by sequence-based approaches. This work is just a start for a promising future of soil Protistology that is likely to find other important roles of these diverse organisms.
Author: Lloyd Ackert Publisher: Springer Science & Business Media ISBN: 9400751982 Category : Science Languages : en Pages : 202
Book Description
This is one of those biographies that provide a window onto the broader understanding of science in its social and cultural context. Using Sergei Nikolaevich Vinogradskii’s career and scientific research trajectory as a point of entry, this book illustrates the manner in which microbiologists, chemists, botanists, and plant physiologists inscribed the concept of a “cycle of life” into their investigations. Their research transformed a longstanding notion into the fundamental approaches and concepts that underlay the new ecological disciplines that emerged in the 1920s. The book presents a reconstruction of significant episodes of Vinogradskii’s laboratory practices and the role of theory in their development. It paints the broader picture of the history of ecology, microbiology and soil science and how these are uniquely united: through the concept of the cycle of life.
Author: Edward Burnett Voorhees
Author: Edward Burnett Voorhees
Author: Edward Burnett Voorhees
Author: 
Author: Edward Burnett Voorhees
Author: Selman Abraham Waksman
Author: Edwin B. Fred
Author: Jacob Goodale Lipman
Author: Karl Frederic Kellerman
Author: Stefan Geisen
Author: Lloyd Ackert