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Author : Angela M. Ebeling
Publisher : Unknown
Page : 304 pages
File Size : 55,8 Mb
Release : 2001
Category : Electronic
ISBN : WISC:89067083808
Author : A. E. Johnston,C. J. Dawson
Publisher : Unknown
Page : 72 pages
File Size : 48,6 Mb
Release : 2005
Category : Phosphorus in agriculture
ISBN : 085310199X
Author : James M. Omernik
Publisher : Unknown
Page : 370 pages
File Size : 54,6 Mb
Release : 1977
Category : Stream ecology
ISBN : STANFORD:36105126762264
Author : H. Tunney
Publisher : Cabi
Page : 488 pages
File Size : 44,7 Mb
Release : 1997
Category : Science
ISBN : UCSD:31822025748427
Eutrophication, caused by phosphorus enrichment, is not a new environmental problem. The persistence of eutrophication in an era when many point-source phosphorus inputs have been curtailed has turned the focus of attention to agricultural phosphorus. A workshop was held in Ireland in 1995 to discuss factors controlling phosphorus losses to water from agriculture. This book presents the proceedings of the workshop and consists of 18 chapters by the invited speakers and three chapters with the 45 poster papers displayed at the workshop.
Author : Luke Gatiboni,Gustavo Brunetto,Paulo Sergio Pavinato,Tim George
Publisher : Frontiers Media SA
Page : 140 pages
File Size : 40,5 Mb
Release : 2021-01-07
Category : Science
ISBN : 9782889663576
Author : M. A. Tabatabai,Donald L. Sparks
Publisher : Unknown
Page : 752 pages
File Size : 41,5 Mb
Release : 2005
Category : Science
ISBN : UOM:39015062539161
Author : Else K. Bünemann,Astrid Oberson,Emmanuel Frossard
Publisher : Springer Science & Business Media
Page : 485 pages
File Size : 50,9 Mb
Release : 2010-11-08
Category : Science
ISBN : 9783642152719
Phosphorus (P) is a finite resource which is essential for life. It is a limiting nutrient in many ecosystems but also a pollutant which can affect biodiversity in terrestrial ecosystems and change the ecology of water bodies. This book collects the latest information on biological processes in soil P cycling, which to date have remained much less understood than physico-chemical processes. The methods section presents spectroscopic techniques and the characterization of microbial P forms, as well as the use of tracers, molecular approaches and modeling of soil-plant systems. The section on processes deals with mycorrhizal symbioses, microbial P solubilization, soil macrofauna, phosphatase enzymes and rhizosphere processes. On the system level, P cycling is examined for grasslands, arctic and alpine soils, forest plantations, tropical forests, and dryland regions. Further, P management with respect to animal production and cropping, and the interactions between global change and P cycling, are treated.
Author : Jerry L. Hatfield,Thomas J. Sauer
Publisher : John Wiley & Sons
Page : 432 pages
File Size : 54,7 Mb
Release : 2020-01-22
Category : Technology & Engineering
ISBN : 9780891188537
Degradation of soils continues at a pace that will eventually create a local, regional, or even global crisis when diminished soil resources collide with increasing climate variation. It's not too late to restore our soils to a more productive state by rediscovering the value of soil management, building on our well-established and ever-expanding scientific understanding of soils. Soil management concepts have been in place since the cultivation of crops, but we need to rediscover the principles that are linked together in effective soil management. This book is unique because of its treatment of soil management based on principles—the physical, chemical, and biological processes and how together they form the foundation for soil management processes that range from tillage to nutrient management. Whether new to soil science or needing a concise reference, readers will benefit from this book's ability to integrate the science of soils with management issues and long-term conservation efforts.
Author : Brian Joseph Andraski
Publisher : Unknown
Page : 326 pages
File Size : 50,7 Mb
Release : 1984
Category : Conservation tillage
ISBN : WISC:89014933477
Author : Anonim
Publisher : Unknown
Page : 90 pages
File Size : 53,7 Mb
Release : 1940
Category : Soil moisture
ISBN : UOM:39015013548881
Author : Anonim
Publisher : Unknown
Page : 488 pages
File Size : 40,9 Mb
Release : 1973
Category : Fertilizers
ISBN : UIUC:30112002034707
Author : Anonim
Publisher : Academic Press
Page : 5485 pages
File Size : 44,8 Mb
Release : 2013-02-05
Category : Nature
ISBN : 9780123847201
The 7-volume Encyclopedia of Biodiversity, Second Edition maintains the reputation of the highly regarded original, presenting the most current information available in this globally crucial area of research and study. It brings together the dimensions of biodiversity and examines both the services it provides and the measures to protect it. Major themes of the work include the evolution of biodiversity, systems for classifying and defining biodiversity, ecological patterns and theories of biodiversity, and an assessment of contemporary patterns and trends in biodiversity. The science of biodiversity has become the science of our future. It is an interdisciplinary field spanning areas of both physical and life sciences. Our awareness of the loss of biodiversity has brought a long overdue appreciation of the magnitude of this loss and a determination to develop the tools to protect our future. Second edition includes over 100 new articles and 226 updated articles covering this multidisciplinary field— from evolution to habits to economics, in 7 volumes The editors of this edition are all well respected, instantly recognizable academics operating at the top of their respective fields in biodiversity research; readers can be assured that they are reading material that has been meticulously checked and reviewed by experts Approximately 1,800 figures and 350 tables complement the text, and more than 3,000 glossary entries explain key terms
Author : Pan Ming Huang,Yuncong Li,Malcolm E. Sumner
Publisher : CRC Press
Page : 821 pages
File Size : 53,7 Mb
Release : 2011-11-17
Category : Science
ISBN : 9781439803080
An evolving, living organic/inorganic covering, soil is in dynamic equilibrium with the atmosphere above, the biosphere within, and the geology below. It acts as an anchor for roots, a purveyor of water and nutrients, a residence for a vast community of microorganisms and animals, a sanitizer of the environment, and a source of raw materials for co
Author : Rattan Lal,B.A. Stewart
Publisher : CRC Press
Page : 351 pages
File Size : 41,9 Mb
Release : 2016-09-19
Category : Nature
ISBN : 9781482257854
Phosphorus is an essential plant nutrient, but global population growth has dramatically reduced the availability of phosphorus fertilizer resources. Despite this scarcity, there remain numerous problems associated with the excessive and inappropriate use of phosphorus leading to non-point source pollution and eutrophication of natural waters. Identifying appropriate systems for managing soil phosphorus and reducing the risks of eutrophication are needed to minimize the environmental risks. This book focuses on the availability and recycling of phosphorus; regulatory and policy issues of sustainable phosphorus use; and water quality management in agroecosystems pertaining to phosphorus. Sections are dedicated to global phosphorus reserves; cycling and pathways of phosphorus; phosphorus in agriculture; human dimensions and policy intervention; and research and development priorities. Phosphorus is a finite but crucial resource and is an essential element to all life. Sub-optimal availability and nutrient imbalance in the root zone can adversely impact plant growth, and the quality of food and feed grown on these soils. However, the proven reserves of phosphorus can hardly be adequate for a few centuries only. Yet, its misuse and mismanagement has caused severe problems of eutrophication of water and pollution of the environment. Thus, judicious management of soil phosphorus is essential. This volume is specifically devoted to availability and recycling of phosphorus, regulatory/policy issues of sustainable use of phosphorus, and management in agroecosystems in the context of maximizing the use efficiency and minimizing the environmental risks of water quality.
Author : Christine Jakobsson
Publisher : Baltic University Press
Page : 508 pages
File Size : 54,9 Mb
Release : 2012
Category : Business & Economics
ISBN : 9789186189105