The micro-organisms of the soil

About this eBook

Author

Rothamsted Experimental Station

Original Publication

United Kingdom: Longmans, Green and Co.,1923.

Credits

Charlene Taylor, Harry Lamé and the Online Distributed Proofreading Team at www.pgdp.net (This file was produced from images generously made available by The Internet Archive/Canadian Libraries)

Language

English

LoC Class

QR: Science: Microbiology

Subject

Soil microbiology

Category

Text

Project Gutenberg

eBook-No. 68670

Release Date

August 3, 2022

Copyright

Public domain in the USA.

Contents

1. 1.THE MICRO-ORGANISMS OF THE SOIL
2. 2.INTRODUCTION.
3. 3.CONTENTS.
4. 4.CHAPTER I. THE DEVELOPMENT OF THE IDEA OF A SOIL POPULATION. — A SELECTED BIBLIOGRAPHY.
5. 5.CHAPTER II. SOIL BACTERIA. — A. Occurrence and Methods of Study.
6. 6.B. Activities Connected with the Acquirement of Energy. — (1) Decomposition of Non-nitrogenous Compounds. — (2) Ammonia Production. — (3) Nitrate Production. — (4) Anaerobic Respiration.
7. 7.CHAPTER III. SOIL BACTERIA. — C. Activities Connected with the Building-up of Bacterial Protoplasm. — (1) Composition of Bacteria. — (2) Sources of Carbon. — (3) Assimilation of Nitrogen Compounds. — (4) Fixation of Free Nitrogen. — D. The Relation of Bacterial Activities to Soil Fertility. — E. Changes in Bacterial Numbers and Activities, and their Relation to External Factors. — REFERENCES TO CHAPTERS II. AND III.
8. 8.CHAPTER IV. PROTOZOA OF THE SOIL, I. — Classification. — Life Histories. — Distribution of Soil Protozoa.
9. 9.CHAPTER V. PROTOZOA OF THE SOIL, II. — Seasonal Changes. — Soil Reaction. — Protozoa and the Nitrogen Cycle. — SELECTED BIBLIOGRAPHY.
10. 10.CHAPTER VI. ALGÆ. — I. General and Historical Introduction. — II. The Soil as a Suitable Medium for Algal Growth. — III. Relation of Algæ to the Nitrogen Cycle — IV. Relation of Algæ to Soil Moisture and to the Formation of Humus Substances. — V. Relation of Algæ to Gaseous Interchanges in the Soil. — SELECTED BIBLIOGRAPHY. — I. General. — II. Relation of Algæ to Light and Carbon. — III. Relation of Algæ to Nitrogen.
11. 11.CHAPTER VII. THE OCCURRENCE OF FUNGI IN THE SOIL. — Qualitative Study. — Quantitative Study. — Conclusion.
12. 12.CHAPTER VIII. THE LIFE OF FUNGI IN THE SOIL. — Relation of Soil Fungi to Living Plants. — Relation of Fungi to Soil Processes. — Carbon Relationships. — Nitrogen Relationships. — Mineral Relationships. — Control of Soil Fungi. — Relation to Soil Fertility.
13. 13.CHAPTER IX. THE INVERTEBRATE FAUNA OF THE SOIL (OTHER THAN PROTOZOA). — Method of Investigating the Soil Fauna. — Groups of Invertebrata Represented in the Soil. — Number of Organisms Present and their Distribution in Depth. — Dominance of Certain Species and Groups. — Classification of Soil Invertebrates According to Feeding Habits. — The Influence of Environmental Factors upon The Invertebrates of the Soil. — The Relation of Soil Invertebrates to Agriculture. — LITERATURE REFERRED TO.
14. 14.CHAPTER X. The Chemical Activities of the Soil Population and their Relation to the Growing Plant. — Material Changes.
15. 15.AUTHOR INDEX.
16. 16.SUBJECT INDEX. — Transcriber’s Notes

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