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Author : Gordon R. Dutt
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.3/5 (121 download)
Download or read book Computer Simulation Model of Dynamic Bio-physicochemical Processes in Soils written by Gordon R. Dutt and published by . This book was released on 1972 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Tinsley
Publisher : Springer Science & Business Media
ISBN 13 : 9400961014
Total Pages : 409 pages
Book Rating : 4.4/5 (9 download)
Download or read book Biological Processes and Soil Fertility written by J. Tinsley and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The success of shifting cultivation systems developed by subsistence farmers testifies to the resilience of the "natural" soil-plant ecosystems to recover from the offtake of nutrients in crops and loss of soil struc ture. By contrast, the development of intensive cropping systems requires large inputs especially of nitrogen, together with phosphorus, sulphur and other essential elements in order to maintain the nutrient levels needed for abundant crop yields. As Dr. Cooke ably pointed out in his introductory lecture, the dis coveries and experiments of the 19th century encouraged farmers in temperate zones to rely greatly on chemical fertilizers supplements. However, the work of Charles Da{win on soil mixing by earthworms and the discovery by Hellriegel and Wilfarth in 1886 that the nodules on legume roots contain colonies of symbiotic bacteria able to "capture" atmospheric nitrogen molecules to the benefit of the host plant heralded a growing realization of the importance of soil biota in fertility studies. Biological fixation of nitrogen has been the theme of many meetings and publi~ations hitherto but at this Conference, convened on the delightful campus of Reading University, attention was mainly focussed on other biological processes in soil fertility. These Proceedings record the dominant themes and include six keynote addresses delivered at plenary sessions and seven introductory lectures to paper reading sessions by invited individuals plus 22 of the proferred papers, in six sections as tabled in the contents list.
Author : Lajpat R. Ahuja
Publisher : John Wiley & Sons
ISBN 13 : 0891183876
Total Pages : 420 pages
Book Rating : 4.8/5 (911 download)
Download or read book Modeling Processes and Their Interactions in Cropping Systems written by Lajpat R. Ahuja and published by John Wiley & Sons. This book was released on 2022-07-06 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling Processes and Their Interactions in Cropping Systems A complete discussion of soil-plant-climate-management processes In Modeling Processes and Their Interactions in Cropping Systems: Challenges for the 21st Century, a team of distinguished researchers delivers a comprehensive and up-to-date scientific textbook devoted to teaching the modeling of soil-plant-climate-management processes at the upper undergraduate and graduate levels. The book emphasizes the new opportunities and paradigms available to modern lab and field researchers and aims to improve their understanding and quantification of individual processes and their interactions. The book helps readers quantify field research results in terms of the fundamental theory and concepts broadly generalizable beyond specific sites, as well as predict experimental results from knowledge of the fundamental factors that determine the environment and plant growth in different climates. Readers will also discover: An introduction to water and chemical transport in the soil matrix and macropores Explorations of heat transport, water balance, snowpack, and soil freezing Discussions of merging machine learning with APSIM models to improve the evaluation of the impact of climate extremes on wheat yields in Australia Examinations of the quantification and modeling of management effects on soil properties, including discussions of tillage, reconsolidation, crop residues, and crop management The book will be essential reading for anyone interested in the 2030 breakthroughs in agriculture identified by the National Academies of Sciences, Engineering, and Medicine.
Author : Donald L. Sparks
Publisher : Academic Press
ISBN 13 : 1483289192
Total Pages : 227 pages
Book Rating : 4.4/5 (832 download)
Download or read book Kinetics of Soil Chemical Processes written by Donald L. Sparks and published by Academic Press. This book was released on 2013-10-22 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The kinetics of reactions in soil and aquatic environments is a topic of extreme importance and interest. To properly understand the fate of applied fertilizers, pesticides, and organic pollutants with time, and to thus improve nutrient availability and the quality of our groundwater, one must study kinetics. This is the first compre Demonstrates different kinetic methodologies Shows how reactions on soil and soil constituents can be measured by utilizing different techniques Describes rates and mechanisms of interactions with pesticides and organic pollutants with soil Covers the kinetics of chemical weathering Discusses how to use mathematical modeling and computer simulation to model kinetic reactions
Author : Lajpat R. Ahuja
Publisher : CRC Press
ISBN 13 : 1000738086
Total Pages : 407 pages
Book Rating : 4.0/5 (7 download)
Download or read book Agricultural System Models in Field Research and Technology Transfer written by Lajpat R. Ahuja and published by CRC Press. This book was released on 2016-04-19 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most books covering the use of computer models in agricultural management systems target only one or two types of models. There are few texts available that cover the subject of systems modeling comprehensively and that deal with various approaches, applications, evaluations, and uses for technology transfer. Agricultural System Models in Field Res
Author : Wynn R. Walker
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.3/5 (91 download)
Download or read book Identification and Initial Evaluation of Irrigation Return Flow Models written by Wynn R. Walker and published by . This book was released on 1978 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R.A. Feddes
Publisher : Springer Science & Business Media
ISBN 13 : 9781402029189
Total Pages : 392 pages
Book Rating : 4.0/5 (291 download)
Download or read book Unsaturated-zone Modeling written by R.A. Feddes and published by Springer Science & Business Media. This book was released on 2004-10-11 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mankind has manipulated the quantity and quality of soil water for millennia. Food production was massively increased through fertilization, irrigation and drainage. But malpractice also caused degradation of immense areas of once fertile land, rendering it totally unproductive for many generations. In populated areas, the pollutant load ever more often exceeds the soil’s capacity for buffering and retention, and large volumes of potable groundwater have been polluted or are threatened to be polluted in the foreseeable future. In the past decades, the role of soil water in climate patterns has been recognized but not yet fully understood. The soil-science community responded to this diversity of issues by developing numerical models to simulate the behavior of water and solutes in soils. These models helped improve our understanding of unsaturated-zone processes and develop sustainable land-management practices. Aimed at professional soil scientists, soil-water modelers, irrigation engineers etc., this book discusses our progress in soil-water modeling. Top scientists present case studies, overviews and analyses of strengths, weaknesses, opportunities and threats related to soil-water modeling. The contributions cover a wide range of spatial scales, and discuss fundamental aspects of unsaturated-zone modeling as well as issues related to the application of models to real-world problems.
Author :
Publisher :
ISBN 13 :
Total Pages : 872 pages
Book Rating : 4.3/5 (91 download)
Download or read book Research Reporting Series written by and published by . This book was released on 1977 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Engineering and Research Center (U.S.)
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.3/5 (91 download)
Download or read book Prediction of Mineral Quality of Irrigation Return Flow: Simulation model of conjuctive use and water quality for a river system or basin written by Engineering and Research Center (U.S.) and published by . This book was released on 1977 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W.K. Lauenroth
Publisher : Elsevier
ISBN 13 : 0444597654
Total Pages : 995 pages
Book Rating : 4.4/5 (445 download)
Download or read book Analysis of Ecological Systems: State-of-the-Art in Ecological Modelling written by W.K. Lauenroth and published by Elsevier. This book was released on 2013-10-22 with total page 995 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Society for Ecological Modelling (ISEM) sponsors conferences, workshops and training courses with the aim of advancing the development of ecological and environmental modelling. The 3rd International Conference on the state-of-the-art in ecological modelling was sponsored by the ISEM in cooperation with the National Park Service Water Resources Laboratory and hosted by the Natural Resource Ecology Laboratory at Colorado State University. Its theme was the application of ecological modelling to environmental management and this book contains the full texts of the three invited papers presented in the five general sessions, plus the final summaries and syntheses of the topics covered during those sessions.
Author : Lajpat Ahuja
Publisher : Water Resources Publication
ISBN 13 : 9781887201087
Total Pages : 388 pages
Book Rating : 4.2/5 (1 download)
Download or read book Root Zone Water Quality Model written by Lajpat Ahuja and published by Water Resources Publication. This book was released on 2000 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comes with computer software and presents a comprehensive simulation model designed to predict the hydrologic response, including potential for surface and groundwater contamination, of alternative crop-management systems. It simulates crop development and the movement of water, nutrients and pesticides over and through the root zone for a representative unit area of an agricultural field over multiple years. The model allows simulation of a wide spectrum of management practices and scenarios with special features such as the rapid transport of surface-applied chemicals through macropores to deeper depths and the preferential transport of chemicals within the soil matrix via mobile-immobile zones. The transfer of surface-applied chemicals (pesticides in particular) to runoff water is also an important component.
Author : M.J. Mitchell
Publisher : Springer Science & Business Media
ISBN 13 : 9400951736
Total Pages : 511 pages
Book Rating : 4.4/5 (9 download)
Download or read book Microfloral and faunal interactions in natural and agro-ecosystems written by M.J. Mitchell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: MYRON J. MITCHELL* The biota of soils constitute an integral part of both natural and agronomic ecosystems. The soil microflora and fauna in conjunction with the belowground portion of the Metaphyta or higher plants constitute the living milieu, components of which are in intimate association with each other as well as the abiotic constituents of the soil. Since these associations or interactions are important in regulat ing both the flux and availability of energy and nutrients, the central theme of the present book focuses on these interactions. The effects of microfloral and faunal inter actions with regard to overall ecosystem dynamics and specific critical processes will be examined. HISTORICAL ASPECTS The coverage of this volume is an extension of a vast body of literature which dates back to the 18th century. A brief compendium of major books and reviews published from 1960 to 1983 is given chronologically in Tables 1 and 2, respectively. Russell (1961) has reviewed work in the 1800's during which some of the basic tenets on the relationships between plant nutrition and soil properties became estab lished. In this period agricultural science was founded and the study of soil bacteriology began. The evolution of soil biology up to the early 1970's has been described by Satch211 in the volume edited by Dickinson and Pugh (1974). *Department of Environmental and Forest Biology, SUNY, College of Environmental Science and Forestry, Syracuse, NY 13210 2 ~ .
Author : Iskandar Karam Iskandar
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (121 download)
Download or read book Effect of Freezing on the Level of Contaminants in Uncontrolled Hazardous Waste Sites written by Iskandar Karam Iskandar and published by . This book was released on 1986 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (319 download)
Download or read book Special Report written by and published by . This book was released on 1986 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Bureau of Reclamation
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (318 download)
Download or read book Reclamation Research in the Seventies--first Progress Report written by United States. Bureau of Reclamation and published by . This book was released on 1974 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Bureau of Reclamation
Publisher :
ISBN 13 :
Total Pages : 540 pages
Book Rating : 4.3/5 (91 download)
Download or read book Annual Report of Progress on Engineering Research written by United States. Bureau of Reclamation and published by . This book was released on 1970 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Bureau of Reclamation
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Water Resources Technical Publication written by United States. Bureau of Reclamation and published by . This book was released on 1974 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
