Download or read book Soil Quality Measurement of the Stability of Soil Aggregates Subjected to the Action of Water written by British Standards Institute Staff and published by . This book was released on 1912-05-31 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils, Quality, Measurement, Aggregates, Water, Chemical analysis and testing, Soil testing

Download or read book Soil Quality written by International Organization for Standardization and published by . This book was released on 2012 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The purpose of the method specified in this International Standard is to provide a realistic analysis of the structural stability of soil aggregates when subjected to the action of weather, cultivation, etc. and to enable the soils to be classified on the basis of the stability of their aggregates." -- P. v.

Download or read book Soil Quality Measurement of the Stability of Soil Aggregates Subjected to the Action of Water written by British Standards Institution and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aggregate Stability of Soils from Western United States and Canada written by William Doral Kemper and published by . This book was released on 1966 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Remediation Technologies for Metal Contaminated Soils written by Hiroshi Hasegawa and published by Springer. This book was released on 2015-09-28 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive and detailed description of remediation techniques for metal-contaminated soils derived from both natural processes and anthropogenic activities. Using a methodical, step-by-step presentation, the book starts by overviewing the origin of toxicants and the correlated comparative extent of contamination to the environment. The legal provisions as proposed or applied in different countries are then discussed to explain the global regulatory situation regarding soil contamination and the extent of consequent concern. The core part of this publication describes the major techniques for in situ or ex situ treatment of the contaminated soil to meet the regulatory limits. Finally, risk evaluation is incorporated, giving special attention to possible impacts during or after implementation of the remediation strategies. The intrusion of metals in soils mostly occurs from various anthropogenic activities, e.g., agricultural practices, industrial activities, and municipal waste disposal. The volumes of metal-contaminated soil are becoming greater than before and are ever-increasing due to rapid urbanization, intensified industrialization, and/or population booms in certain parts of the world. Hence, the options previously proposed, such as isolation of the contaminated site or movement of the contaminated mass to a secure disposal site after excavation, are becoming unsuitable from the economic point of view, and instead, decontamination alternatives are preferred. This book will help readers such as scientists and regulators to understand the details of the remediation techniques available to deal with the soils contaminated by toxic metals.

Download or read book Some Effects of Biological and Physical Processess on Soil Aggregate Stability written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of biological and physical processes on the aggregate stability of some weakly structured arable and pasture soils were investigated. Preliminary investigations showed significant correlations between soil organic matter and both wet sieving and turbidimetric methods of aggregate stability; the latter method was chosen on grounds of convenience. Scanning electron microscope pictures showed the presence of both fungi and bacteria when soils were incubated. Growth of fungi, estimated by ergosterol measurement, correspond to temporary stability increases, which could be explained by retention of soil particles within the reticulum of fungal hyphae. The effect disappeared as the fungi were destroyed and replaced by bacteria and actinomycetes. Effects caused byfungi were examined separately, using vancomycin to inhibit bacterial growth, and bacterial effects by using cycloheximide to eliminate fungi. Bacterial growth had little direct effect in stabilising soil aggregates; periodate oxidation showed that polysaccharides produced by bacteria are mainly responsible. To examine the contribution of physical processes to increased stability in remoulded soils biological processes were eliminated by sterilisation. Thixotropic changes made a contribution to age hardeningin remoulded aggregates similar in magnitude to biological processes. Thixotropic changes were reversible and accompanied by soil strength and metric water potential changes. Polysaccharides did not contribute to thixotropic aging processes. Remoulded soils were subjected to wetting/drying and freezing/thawing cycles. After 3 to 6 cycles the stability of bothsterilised and unsteriliserd soils recovered to that of natural aggregates, suggesting a contribution by thixotropy. Repeated weathering cycles decreased the stability of unsterilised, and more so sterilised, field aggregates suggesting that in the former, bond reformation due to biological activity counteracted the destruction caused by wetting/drying and freezing/thawing.

Download or read book Functional Diversity of Mycorrhiza and Sustainable Agriculture written by Michael J. Goss and published by Academic Press. This book was released on 2017-05-19 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional Diversity of Mycorrhiza and Sustainable Agriculture is the first book to present the core concepts of working with Arbuscular mycorrhizal fungi to improve agricultural crop productivity. Highlighting the use of indigenous AM fungi for agriculture, the book includes details on how to maintain and promote AM fungal diversity to improve sustainability and cost-effectiveness. As the need to improve production while restricting scarce inputs and preventing environmental impacts increases, the use of AMF offers an important option for exploiting the soil microbial population. It can enhance nutrient cycling and minimize the impacts of biotic and abiotic stresses, such as soil-borne disease, drought, and metal toxicity. The book offers land managers, policymakers, soil scientists, and agronomists a novel approach to utilizing soil microbiology in improving agricultural practices. Provides a new approach to exploiting the benefits of mycorrhizas for sustainable arable agricultural production using indigenous AMF populations and adopting appropriate crop production techniques Bridges the gap between soil microbiology, including increasing knowledge of mycorrhiza and agronomy Presents real-world practical insights and application-based results, including a chapter focused primarily on case studies Includes extensive illustrative diagrams and photographs

Download or read book Research and Development Progress Report written by United States. Office of Saline Water and published by . This book was released on 1969 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Erosion and Sediment Redistribution in River Catchments written by Philip Neil Owens and published by CABI. This book was released on 2006 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: There can be little doubt that issues relating to soils and sediments are moving up the political agenda, and a realization that we need to collectively manage and protect both soil and water resources. In order to manage this delicate interface, attention is being increasingly directed towards holistic land-river management, demanding a greater appreciation of the interaction between soils and sediments. This book reviews the major achievements recently made in soil erosion and sediment redistribution research and management, and identifies future requirements.

Download or read book Soil Management Impact on the Water Stability of Soil Aggregates written by James Lee Jordahl and published by . This book was released on 1991 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soils written by Randall J. Schaetzl and published by Cambridge University Press. This book was released on 2005-05-05 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils: Genesis and Geomorphology is a comprehensive and accessible textbook on all aspects of soils. The book's introductory chapters on soil morphology, physics, mineralogy and organisms prepare the reader for the more advanced and thorough treatment that follows. Theory and processes of soil genesis and geomorphology form the backbone of the book, rather than the emphasis on soil classification that permeates other less imaginative soils textbooks. This refreshingly readable text takes a truly global perspective, with many examples from around the world sprinkled throughout. Replete with hundreds of high quality figures and a large glossary, this book will be invaluable for anyone studying soils, landforms and landscape change. Soils: Genesis and Geomorphology is an ideal textbook for mid- to upper-level undergraduate and graduate level courses in soils, pedology and geomorphology. It will also be an invaluable reference text for researchers.

Download or read book Climate Change and Agricultural Ecosystems written by Krishna Kumar Choudhary and published by Woodhead Publishing. This book was released on 2019-05-04 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate Change and Agricultural Ecosystems explains the causative factors of climate change related to agriculture, soil and plants, and discusses the relevant resulting mitigation process. Agricultural ecosystems include factors from the surrounding areas where agriculture experiences direct or indirect interaction with the plants, animals, and microbes present. Changes in climatic conditions influence all the factors of agricultural ecosystems, which can potentially adversely affect their productivity. This book summarizes the different aspects of vulnerability, adaptation, and amelioration of climate change in respect to plants, crops, soil, and microbes for the sustainability of the agricultural sector and, ultimately, food security for the future. It also focuses on the utilization of information technology for the sustainability of the agricultural sector along with the capacity and adaptability of agricultural societies under climate change. Climate Change and Agricultural Ecosystems incorporates both theoretical and practical aspects, and serves as base line information for future research. This book is a valuable resource for those working in environmental sciences, soil sciences, agricultural microbiology, plant pathology, and agronomy. - Covers the role of chemicals fertilizers, environmental deposition, and xenobiotics in climate change - Discusses the impact of climate change on plants, soil, microflora, and agricultural ecosystems - Explores the mitigation of climate change by sustainable methods - Presents the role of computational modelling in climate change mitigation

Download or read book Abstracts of Recent Published Material on Soil and Water Conservation written by United States. Agricultural Research Service. Soil and Water Conservation Research Division and published by . This book was released on with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstracts for Dec. 1954- issued in the Agricultural Research Service's series ARS-41.

Download or read book Soil Quality for Crop Production and Ecosystem Health written by E.G. Gregorich and published by Elsevier. This book was released on 1997-11-10 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil is a complex body that exists as many types, each with diverse properties that may vary widely across time and space as a function of many factors. This complexity makes the evaluation of soil quality much more challenging than that of water or air quality. Evaluation of soil quality now considers environmental implications as well as economic productivity, seeking to be more holistic in its approach.Thus, soil quality research draws from a wide range of disciplines, blending the approaches of biologists, physicists, chemists, ecologists, economists and agronomists, among others.This book presents a broad perspective of soil quality that includes these various perspectives and gives a strong theoretical basis for the assessment of soil quality.A short glossary provides definitions for terms used throughout the book.

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Quality Test Kit Guide written by and published by . This book was released on 1998 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Future of Soil Carbon written by Carlos Garcia and published by Academic Press. This book was released on 2018-04-10 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Future of Soil Carbon: Its Conservation and Formation provides readers with an integrative approach to understanding the important role of organic carbon in soil functioning and fertility. Terrestrial interactions between SOC and complex human-natural systems require new fundamental and applied research into regional and global SOC budgets. This book provides new and synthesized information on the dynamics of SOC in the terrestrial environment. In addition to rigorous state-of-the art on soil science, the book also provides strategies to avoid risks of soil carbon losses. Soil organic carbon (SOC) is a vital component of soils, with important and far-reaching effects on the functioning of terrestrial ecosystems. Human activities over the last several decades have significantly changed the regional and global balance of SOC, greatly exacerbating global warming and climate change. - Provides a holistic overview of soil carbon status and main threats for its conservation - Offers innovative solutions to conserve soil carbon - Includes in-depth treatment of regional and global changes in soil organic carbon budget