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Tillage And Residue Management Effects On Soil Organic Matter Dynamics In A Sandy Loam
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Book Synopsis Tillage and Residue Management Effects on Soil Organic Matter Dynamics in a Sandy-loam by : Moshe Tuvia Halpern
Download or read book Tillage and Residue Management Effects on Soil Organic Matter Dynamics in a Sandy-loam written by Moshe Tuvia Halpern and published by . This book was released on 2009 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Tillage and Soil Properties on Soil Organic Matter Fractions and Dynamics in Soils from New York and Brazil by : Alexandre Nunes Cardoso
Download or read book The Influence of Tillage and Soil Properties on Soil Organic Matter Fractions and Dynamics in Soils from New York and Brazil written by Alexandre Nunes Cardoso and published by . This book was released on 2000 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of physical fractionation procedures along with the study of soil aggregation has advanced the understanding of SOM protection mechanisms. In this study, tillage and soil aggregation were evaluated as controllinbg factors of SOM dynamics. This was done through the use of physical fractionation procedures and the natural 13C abaundance technique in soils contrasting in mineralogy and texture.
Book Synopsis Long-term Tillage, Cropping Sequence, and Nitrogen Fertilization Effects on Soil Carbon and Nitrogen Dynamics by : Fugen Dou
Download or read book Long-term Tillage, Cropping Sequence, and Nitrogen Fertilization Effects on Soil Carbon and Nitrogen Dynamics written by Fugen Dou and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Management practices that may increase soil organic matter (SOM) storage include conservation tillage, especially no till (NT), enhanced cropping intensity, and fertilization. My objectives were to evaluate management effects on labile [soil microbial biomass (SMB) and mineralizable, particulate organic matter (POM), and hydrolyzable SOM] and slow (mineral-associated and resistant organic) C and N pools and turnover in continuous sorghum [Sorghum bicolor (L.) Moench.], wheat (Triticum aestivum L.), and soybean [Glycine max (L.) Merr.], sorghum-wheat/soybean, and wheat/soybean sequences under conventional tillage (CT) and NT with and without N fertilization. A Weswood silty clay loam (fine, mixed, thermic Fluventic Ustochepts) in southern central Texas was sampled at three depth increments to a 30-cm depth after wheat, sorghum, and soybean harvesting. Soil organic C and total N showed similar responses to tillage, cropping sequence, and N fertilization following wheat, sorghum, and soybean. Most effects were observed in surface soils. NT significantly increased SOC. Nitrogen fertilization significantly increased SOC only under NT. Compared to NT or N addition, enhanced cropping intensity only slightly increased SOC. Estimates of C sequestration rates under NT indicated that SOC would reach a new equilibrium after 20 yr or less of imposition of this treatment. Labile pools were all significantly greater with NT than CTat 0 to 5 cm and decreased with depth. SMB, mineralizable C and N, POM, and hydrolyzable C were highly correlated with each other and SOC, but their slopes were significantly different, being lowest in mineralizable C and highest in hydrolyzable C. These results indicated that different methods determined various fractions of total SOC. Results from soil physical fractionation and 13C concentrations further supported these observations. Carbon turnover rates increased in the sequence: ROC
Book Synopsis Methods of Soil Analysis, Part 2 by : Richard W. Weaver
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.
Book Synopsis Managing Cover Crops Profitably (3rd Ed. ) by : Andy Clark
Download or read book Managing Cover Crops Profitably (3rd Ed. ) written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Book Synopsis Impact of Tillage and Management Practices on Soil Organic Carbon and Nitrogen Dynamics in Diverse Agroecosystems by : Samba Ansumana Kawa
Download or read book Impact of Tillage and Management Practices on Soil Organic Carbon and Nitrogen Dynamics in Diverse Agroecosystems written by Samba Ansumana Kawa and published by . This book was released on 2010 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil Organic Matter in Sustainable Agriculture by : Fred Magdoff
Download or read book Soil Organic Matter in Sustainable Agriculture written by Fred Magdoff and published by CRC Press. This book was released on 2004-05-27 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recognition of the importance of soil organic matter (SOM) in soil health and quality is a major part of fostering a holistic, preventive approach to agricultural management. Students in agronomy, horticulture, and soil science need a textbook that emphasizes strategies for using SOM management in the prevention of chemical, biological, and physical problems. Soil Organic Matter in Sustainable Agriculture gathers key scientific reviews concerning issues that are critical for successful SOM management. This textbook contains evaluations of the types of organic soil constituents—organisms, fresh residues, and well-decomposed substances. It explores the beneficial effects of organic matter on soil and the various practices that enhance SOM. Chapters include an examination of the results of crop management practices on soil organisms, organic matter gains and losses, the significance of various SOM fractions, and the contributions of fungi and earthworms to soil quality and crop growth. Emphasizing the prevention of imbalances that lead to soil and crop problems, the text also explores the development of soils suppressive to plant diseases and pests, and relates SOM management to the supply of nutrients to crops. This book provides the essential scientific background and poses the challenging questions that students need to better understand SOM and develop improved soil and crop management systems.
Book Synopsis Crops Residue Management by : J. L. Hatfield
Download or read book Crops Residue Management written by J. L. Hatfield and published by CRC Press. This book was released on 2018-01-18 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent changes in the Conservation Compliance Plans for farmers shows the need for improved information on the effective management of crop residues. Residue management requires an understanding of the crop, soil, and climate in which the farming system is located. In this volume, the strategies for effective residue management are described for each region of the country to provide a comparison of the regional differences. The chapters not only describe the knowledge in each region but also suggest some of the needed areas of research required to develop an improved understanding of the processes involved in effective residue management.
Book Synopsis Estimation of Available Phosphorus in Soils by Extraction with Sodium Bicarbonate by : Sterling Robertson Olsen
Download or read book Estimation of Available Phosphorus in Soils by Extraction with Sodium Bicarbonate written by Sterling Robertson Olsen and published by . This book was released on 1954 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil Compaction in Crop Production by : B.D. Soane
Download or read book Soil Compaction in Crop Production written by B.D. Soane and published by Elsevier. This book was released on 2013-10-22 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a global review of the mechanisms, incidence and control measures related to the problems of soil compaction in agriculture, forestry and other cropping systems. Among the disciplines which relate to this subject are soil physics, soil mechanics, vehicle mechanics, agricultural engineering, plant physiology, agronomy, pedology, climatology and economics.The volume will be of great value to soil scientists, agricultural engineers, and all those involved with irrigation, drainage and tillage. It will help to facilitate the exchange of information on current work throughout the world, as well as to promote scientific understanding and stimulate the development, evaluation and adoption of practical solutions to these widespread and urgent problems.
Book Synopsis Soil Processes and the Carbon Cycle by : Rattan Lal
Download or read book Soil Processes and the Carbon Cycle written by Rattan Lal and published by CRC Press. This book was released on 2018-02-06 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: World soils contain about 1500 gigatons of organic carbon. This large carbon reserve can increase atmospheric concentrations of CO2 by soil misuse or mismanagement, or it can reverse the 'greenhouse' effect by judicious land use and proper soil management. Soil Processes and the Carbon Cycle describes soil processes and their effects on the global carbon cycle while relating soil properties to soil quality and potential and actual carbon reserves in the soil. In addition, this book deals with modeling the carbon cycle in soil, and with methods of soil carbon determinations.
Download or read book Soil Biology written by J. L. Hatfield and published by CRC Press. This book was released on 2018-01-18 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil Biology is a state-of-the art review focusing on the linkage between biological processes that occur in the soil and their impact on soil quality. Topics considered include the microbial ecology of conservation management systems, dynamic processes of vesicular-arbuscular mycorrhizae, earthworms and soil fauna, microbial processes in the soil, and the degradation of pesticides through microbial processes. The book will interest soil scientists, microbiologists, agronomists, and soil ecologists.
Book Synopsis Soil Carbon Management by : John M. Kimble
Download or read book Soil Carbon Management written by John M. Kimble and published by CRC Press. This book was released on 2007-05-21 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Better Manage Soil C for Improved Soil Quality In the United States, soil has fueled the availability of abundant, safe food, thus underpinning economic growth and development. In the future we need to be more vigilant in managing and renewing this precious resource by replacing the nutrients and life-sustaining matter that we remove for
Book Synopsis The Effects of Tillage and Cropping on the Dynamics of Soil Organic Matter as Determined by 13C Natural Abundance by :
Download or read book The Effects of Tillage and Cropping on the Dynamics of Soil Organic Matter as Determined by 13C Natural Abundance written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil Enzymes by : Roger George Burns
Download or read book Soil Enzymes written by Roger George Burns and published by . This book was released on 1978 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: History of abiontic soil ensyme research; Origin and range of enzymes in soil; kinetics and consecutive reactions of soil enzymes; Soil polysaccharidases: activity and agricultural importance; Urease activity in soils; Soil phosphatase and sulphatase; Interactions between agrochemicals and soil enzymes; Enzyme activity in soil: some theoretical and practical considerations; Methodology of soil enzyme measurement and extraction.
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9251086001 Total Pages :110 pages Book Rating :4.2/5 (51 download)
Book Synopsis Take it or Leave it? by : Food and Agriculture Organization of the United Nations
Download or read book Take it or Leave it? written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-06-13 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade, the increased interest in bioenergy production has led to the need for improved crop residue management. Crop residues have historically been used for many other purposes: to sustain healthy soils for food production, as feed and bedding for livestock, and as raw material for heating and cooking. As the link between crop residue management and food security is evident, one needs to decide whether or to which extent the removal of crop residues for bioenergy production is possible. Building science-based decision support tools can guide stakeholders in this decision process. The study presents a first attempt in designing such a decision support tool for soil residue management. The study seeks to explore the effect of crop residue management on soil quality and yield, two crucial aspects for food security. More than 1 000 peer-reviewed journal papers of the past ten years were studied in order to assess (i) whether crop residue application is associated with higher soil organic carbon (SOC), (ii) whether it ameliorates soil structure and (iii) if the change in SOC related to residue application has a positive impact on yields. The findings of this report demonstrate that crop residue management has to be contextualized, suggesting the need for site-specific residue management schemes. in coarse soils located in tropical climates and in SOC-depleted soils located in temperate climates, crop residue removal is not advisable.
Book Synopsis Agricultural Dust Production and Dynamic Soil Properties in Standard and Conservation Tillage Systems in the San Joaquin Valley, California by : Julie B. Baker
Download or read book Agricultural Dust Production and Dynamic Soil Properties in Standard and Conservation Tillage Systems in the San Joaquin Valley, California written by Julie B. Baker and published by . This book was released on 2004 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
