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About: Humus is a research topic. Over the lifetime, 10750 publications have been published within this topic receiving 319220 citations. The topic is also known as: Humic/humus soil.

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01 Jan 1982
TL;DR: In this paper, the authors present an analysis of organic matter in soil using NMR Spectroscopy and analytical pyrolysis, showing that organic matter is composed of nitrogen and ammonium.
Abstract: Partial table of contents: Organic Matter in Soils: Pools, Distribution, Transformations, and Function. Extraction, Fractionation, and General Chemical Composition of Soil Organic Matter. Organic Forms of Soil Nitrogen. Native Fixed Ammonium and Chemical Reactions of Organic Matter with Ammonia and Nitrite. Organic Phosphorus and Sulfur Compounds. Soil Carbohydrates. Soil Lipids. Biochemistry of the Formation of Humic Substances. Reactive Functional Groups. Structural Components of Humic and Fulvic Acids as Revealed by Degradation Methods. Characterization of Soil Organic Matter by NMR Spectroscopy and Analytical Pyrolysis. Structural Basis of Humic Substances. Spectroscopic Approaches. Colloidal Properties of Humic Substances. Electrochemical and Ion-Exchange Properties of Humic Substances. Organic Matter Reactions Involving Pesticides in Soil. Index.

5,658 citations

21 Jan 1996
TL;DR: In this article, the authors present an overview of the role of soil in the formation and evolution of Soil Microbiology and Biochemistry in Perspective, as well as its relationship with Soil Organisms.
Abstract: Soil Microbiology and Biochemistry in Perspective. Soil as a Habitat for Organisms and Their Reactions. Methods for Studying Soil Organisms. Components of the Soil Biota. Occurrence and Distribution of Soil Organisms. Carbon Cycling and Soil Organic Matter. Dynamics of Residue Decomposition and Soil Organic Matter Turnover. Ammonification and Nitrification. The Fate of Nitrates. Closing the Nitrogen Cycle: Return of Nitrogen to the Soil. Mycorrhizal Relationships. The Commercialization of Organisms. Phosphorus Transformations. Sulfur Transformations in Soil. Microbial Transformations of Metal. Chapter References and Suggested Reading. Subject Index.

2,974 citations

01 Jan 2008
TL;DR: The Chemical Composition of Soils as mentioned in this paper is a well-known topic in the field of soil chemistry, and it has been used extensively in the literature to study the properties of soil.
Abstract: 1. The Chemical Composition of Soils 2. Soil Minerals 3. Soil Humus 4. The Soil Solution 5. Mineral Stability and Weathering 6. Oxidation-Reduction Reactions 7. Soil Particle Surface Charge 8. Soil Adsorption Phenomena 9. Exchangeable Ions 10. Colloidal Phenomena 11. Soil Acidity 12. Soil Salinity

2,751 citations

Journal ArticleDOI
TL;DR: In this article, the authors summarize the recent literature about controls on dissolved organic matter (DOM) concentrations and fluxes in so-called "soil degraded organic matter" (SOCOM).
Abstract: Dissolved organic matter (DOM) in soils plays an important role in the biogeochemistry of carbon, nitrogen, and phosphorus, in pedogenesis, and in the transport of pollutants in soils. The aim of this review is to summarize the recent literature about controls on DOM concentrations and fluxes in soi

2,138 citations

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No. of papers in the topic in previous years