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Author : John F. Amadon
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (542 download)
Download or read book Soil Organic Matter Characterization and Nitrogen Mineralization written by John F. Amadon and published by . This book was released on 1979 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Werner L. Kutsch
Publisher : Cambridge University Press
ISBN 13 : 1139483161
Total Pages : 301 pages
Book Rating : 4.1/5 (394 download)
Download or read book Soil Carbon Dynamics written by Werner L. Kutsch and published by Cambridge University Press. This book was released on 2010-01-07 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon stored in soils represents the largest terrestrial carbon pool and factors affecting this will be vital in the understanding of future atmospheric CO2 concentrations. This book provides an integrated view on measuring and modeling soil carbon dynamics. Based on a broad range of in-depth contributions by leading scientists it gives an overview of current research concepts, developments and outlooks and introduces cutting-edge methodologies, ranging from questions of appropriate measurement design to the potential application of stable isotopes and molecular tools. It includes a standardised soil CO2 efflux protocol, aimed at data consistency and inter-site comparability and thus underpins a regional and global understanding of soil carbon dynamics. This book provides an important reference work for students and scientists interested in many aspects of soil ecology and biogeochemical cycles, policy makers, carbon traders and others concerned with the global carbon cycle.
Author : M. Schnitzer
Publisher :
ISBN 13 :
Total Pages : 319 pages
Book Rating : 4.:/5 (251 download)
Download or read book Soil Organic Matter written by M. Schnitzer and published by . This book was released on 1978 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humic substances: chemistry and reactions. Synthesis of humic substances. Extraction of humic substances. Fractionation and purification. The characterization of humic materials. The analysis of humic substances - non-degradative methods. Degradative methods. The isolation of alkanes and fatty acids from humic substances. The chemical structure of humic substances. Reactions of HA's and FA's with metals and minerals. Reactions of humic substances with organic compounds. Physiological effects of humic substances. Carbohydrates in soil. General nature of carbohydrates; nomenclature. Carbohydrate distribution in soil. Composition of soil carbohydrates. Properties of soil polysaccharides. Origin of soil polysaccharides. Behaviour and significance of soil carbohydrates. Organic nitrogen, phosphorus and sulfur in soils. Some characteristics of source materials. Total organic N, P and S soils. Analytical limitations. Fractionations. Biologically "meaningful" fractions. The interaction of organic matter with pesticides. Nature of pesticides. Mechanisms of adsorption. Adsorption isotherms. Adsorption of specific types of pesticides by organic matter. Adsorption of pesticides of pesticides by organic matter - clay complexes. Techniques used in pesticides - organic matter interaction studies. Chemical alteration and binding of pesticides. Soil organic carbon, nitrogen and fertility. Carbon and nitrogen and effect of soil forming factors on them. Effects of management on soil organic matter. Nitrogen transformations in soil. Environmental factors affecting mineralization. Dynamics of organic matter transformations. Nitrogen availability and its estimation. Fertility related factors. Soil organic sulfur and fertility. Nature and distribution of organic sulfur in soil. Effects of management on soil organic sulfur. Sulfur transformations in soil. Environmental factors affecting mineralization. Sulfur availability and availability indexes.
Author : Amabelia Silvia del Pino Machado
Publisher : Cuvillier Verlag
ISBN 13 : 386537509X
Total Pages : 189 pages
Book Rating : 4.8/5 (653 download)
Download or read book Estimating Nitrogen Mineralization Potential of Soils and the Effect of Water and Temperature and Crop Residues on Nitrogen Net Mineralization written by Amabelia Silvia del Pino Machado and published by Cuvillier Verlag. This book was released on 2005 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B. Mary
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (11 download)
Download or read book Evaluation of the Nitrogen Mineralization Capacity of Some Arable Soils written by B. Mary and published by . This book was released on 1979 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predicting Nitrogen Mineralization from Soil Organic Matter - a Chimera? written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Predicting nitrogen (N) mineralization from soil organic matter is difficult because N mineralization is affected by several environmental factors, while being the net outcome of concurrent N processes that produce and consume mineral N. One aim of the present thesis was to study the effects of freezing and thawing on carbon (C) and N mineralization. A second aim was to elucidate if, and how, the quantity and quality of organic matter inputs affect N mineralization from the pool of soil organic matter. C and net N mineralization were determined in soils from the Ultuna Long-Term Soil Organic Matter Experiment exposed to repeated freezing and thawing (temperatures ranging from -5 °C to +5 °C). C, gross and net N mineralization in relation to quantity and quality of organic matter inputs were determined during long-term laboratory incubations at 20 °C. Gross N mineralization rates were estimated using the 15N isotope dilution technique, which is based on several assumptions. The assumption of 'equilibrium between added and native N' was tested by using a published data set in a dynamic compartmental model. Freezing and thawing of soils resulted in a flush in C and N mineralization, but the effect was only short-lived. It was concluded that freezing and thawing of soils during late winter and early spring is unlikely to be of importance to crop N availability in spring. Both quantity and quality of organic matter were major determinants of C and gross N mineralization, and these were proportional suggesting that C mineralization may be used as a predictor for gross N mineralization. Preferential use of added N may be a more common occurrence in 15N isotope dilution studies than hitherto thought and the assumption of 'equilibrium between added and native N' needs therefore critical evaluation. The data analysis presented in this thesis offers a way to estimate the potential effects of preferential use on gross N mineralization rate estimates. This thesis indicates that
Author : International Atomic Energy Agency
Publisher :
ISBN 13 :
Total Pages : 450 pages
Book Rating : 4.3/5 (91 download)
Download or read book Agrochimica written by International Atomic Energy Agency and published by . This book was released on 1977 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic matter and soil productivity; Turnover of plant residues; Mineralization of organic compounds; Dynamics of organic forms of nitrogen; Nitrogen economy; Biodegradation of organic matter; Biochemical transformation of organic matter; Bitumens in soil organic matter; Characterization of humic acids; Carbon dating; Modern techniques and their implact on soil organic matter research; Sludge; Soil organic matter components and plant metabolism; Interaction between agrochemicals and organic matter; Peat.
Author : David S. Powlson
Publisher : Springer Science & Business Media
ISBN 13 : 3642610943
Total Pages : 424 pages
Book Rating : 4.6/5 (426 download)
Download or read book Evaluation of Soil Organic Matter Models written by David S. Powlson and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil organic matter (SOM) represents a major pool of carbon within the biosphere, roughly twice than in atmospheric CO2. SOM models embody our best understanding of soil carbon dynamics and are needed to predict how global environmental change will influence soil carbon stocks. These models are also required for evaluating the likely effectiveness of different mitigation options. The first important step towards systematically evaluating the suitability of SOM models for these purposes is to test their simulations against real data. Since changes in SOM occur slowly, long-term datasets are required. This volume brings together leading SOM model developers and experimentalists to test SOM models using long-term datasets from diverse ecosystems, land uses and climatic zones within the temperate region.
Author : Jean-Phillipe Croue
Publisher : American Water Works Association
ISBN 13 : 1583210156
Total Pages : 372 pages
Book Rating : 4.5/5 (832 download)
Download or read book Characterization of Natural Organic Matter in Drinking Water written by Jean-Phillipe Croue and published by American Water Works Association. This book was released on 2000 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research reported on here sought to characterize natural organic matter (NOM) in dilute solutions and to isolate it without altering its properties, so that the effect of NOM in drinking water may be considered. Several NOM isolation methods were evaluated, including evaporation, reverse osmosis, nanofiltration, and adsorption. The effects of such isolation procedures on NOM's chemical composition and reactivity were considered. Based on these studies, the report presents conclusions regarding the feasibility and adequacy of in situ and ex situ techniques. Croue is affiliated with Laboratoire de Chimie de l'Eau de l'Environment, Universite de Poiters. Annotation copyrighted by Book News, Inc., Portland, OR.
Author : K. Mulongoy
Publisher :
ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.3/5 (91 download)
Download or read book Soil Organic Matter Dynamics and Sustainability of Tropical Agriculture written by K. Mulongoy and published by . This book was released on 1993-03-29 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic matter and the sustainability of agricultural systems: Definition and measurement. Characterization and quantification of soil organic matter. Organic inputs and soil organic matter. Nutrient cycling and processes regulating the transformation of soil organic matter. In situ estimation of soil nitrogen mineralization. Nitrogen turnover in ared latosol: Effect of added carbon on the incorporation of 15N into soil organic matter. Soil organic matter and soil fertility.
Author : Thomas C. Willson
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.3/5 (129 download)
Download or read book Managing Nitrogen Mineralization and Biologically Active Organic Matter Fractions in Agricultural Soil written by Thomas C. Willson and published by . This book was released on 1998 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marc Pansu
Publisher : Springer Science & Business Media
ISBN 13 : 3540312110
Total Pages : 996 pages
Book Rating : 4.5/5 (43 download)
Download or read book Handbook of Soil Analysis written by Marc Pansu and published by Springer Science & Business Media. This book was released on 2007-04-18 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is a reference guide for selecting and carrying out numerous methods of soil analysis. It is written in accordance with analytical standards and quality control approaches. It covers a large body of technical information including protocols, tables, formulae, spectrum models, chromatograms and additional analytical diagrams. The approaches are diverse, from the simplest tests to the most sophisticated determination methods.
Author : Hongmei Xue
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (69 download)
Download or read book Characterization of Soil Organic Matter written by Hongmei Xue and published by . This book was released on 1997 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zoe G. Cardon
Publisher : Elsevier
ISBN 13 : 0080493041
Total Pages : 235 pages
Book Rating : 4.0/5 (84 download)
Download or read book The Rhizosphere written by Zoe G. Cardon and published by Elsevier. This book was released on 2011-04-28 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Below the soil surface, the rhizosphere is the dynamic interface among plant roots, soil microbes and fauna, and the soil itself, where biological as well as physico-chemical properties differ radically from those of bulk soil. The Rhizosphere is the first ecologically-focused book that explicitly establishes the links from extraordinarily small-scale processes in the rhizosphere to larger-scale belowground patterns and processes. This book includes chapters that emphasize the effects of rhizosphere biology on long-term soil development, agro-ecosystem management and responses of ecosystems to global change. Overall, the volume seeks to spur development of cross-scale links for understanding belowground function in varied natural and managed ecosystems. - First cross-scale ecologically-focused integration of information at the frontier of root, microbial, and soil faunal biology - Establishes the links from extraordinarily small-scale processes in the rhizosphere to larger-scale belowground patterns and processes - Includes valuable information on ecosystem response to increased atmospheric carbon dioxide and enhanced global nitrogen deposition - Chapters written by a variety of experts, including soil scientists, microbial and soil faunal ecologists, and plant biologists
Author : Ralph John DiCosty
Publisher :
ISBN 13 :
Total Pages : 302 pages
Book Rating : 4.3/5 (129 download)
Download or read book Mineralization, Immobilization, and 15N-NMR Spectroscopy of Organic Nitrogen in Whole Soil and Particle-size Fractions written by Ralph John DiCosty and published by . This book was released on 1999 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard W. Weaver
Publisher : ACSESS
ISBN 13 :
Total Pages : 1164 pages
Book Rating : 4.3/5 (91 download)
Download or read book Methods of Soil Analysis, Part 2 written by Richard W. Weaver and published by ACSESS. This book was released on 1994 with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil sampling for microbiological analysis; Statistical treatment of microbial data; Soil sterilization; Soil water potencial; Most probable number counts; Light microscopic methods for studying soil microorganisms; Viruses; Recovery and enumeration of viable bacteria; Coliform bacteria; Autotrophic nitrifying bacteria; Free-living dinitrogen-fixing bacteria; Legume nodule symbionts; Anaerobic bacteria and processes; Denitrifiers; Actiomycetes; Frankia and the actinorhizal symbiosis; Filamentous fungi; Vesicular-arbuscular mycorrhizal fungi; Isolation of microorganisms producting antibiotics; Microbiological procedures for biodegradation research; Algae and cyanobacteria; Marking soil bacteria with lacZY; Detection of specific DNA sequences in environmental sample via polymerase chaim reaction; Isolation and purification of bacterial DNA from soil; Microbial biomass; Soil enzymes; Carbon mineralization; Isotopic methods for the study of soil organic matter dynamics ; Practical considerations in the use of nitrogen tracers in agricultural and environmental research; Nitrogen availability; Nitrogen mineralization, immobilization, and nitrification; Dinitrogen fixation; Measuring denitrification in the field; Sulfur oxidation and reduction in soils; Iron and manganese oxidation and reduction.
Author : Y. Chen
Publisher : Springer Science & Business Media
ISBN 13 : 9400944268
Total Pages : 312 pages
Book Rating : 4.4/5 (9 download)
Download or read book The Role of Organic Matter in Modern Agriculture written by Y. Chen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of organic residues as a means of maintaining and increasing soil fertility is of long-standing. This tradition has been somewhat neglected since the introduc tion of mineral fertilizers at low cost. More and more farmers and scientists are now showing renewed interest in the proper and effective use of org~tnic residues, composts and other recycled organic additives. The role and function of organic amendments in modern agricultural systems have become topics of major interest in the scientific and agricultural communities. Research work on residue disposal has provided new concepts on the interaction between organic components and soils as well as new handling technologies (e. g. pelletizing of organic residues). The trend to conserve energy has led scientists to study the minimal tillage system, to find ways of replacing conventional inorganic fertilizers with natural organic prod ucts or microbial preparations, and to develop new composting methods. The drive to achieve higher yields in commercial greenhouse farming has led to a search for optimum substrates as growth media and for improved management techniques. This has led to the introduction of organic substitutes for peat, nota bly those originating from agricultural wastes. Another important aspect is the current interest in organic farming, where use of synthetic chemicals is avoided or prohibited. An increasing percentage of the population in highly developed countries is willing to pay premium prices for food produced on soils where inorganic fertilizers and other agricultural chemicals have not been used.
