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.

Phosphorus (P) is an essential element for all organisms. However, there is a P paradox, whereby P concentrations considered deficient in some environments such as in agricultural soils are considered excessive in water, where they trigger eutrophication. Ensuring adequate P for crop production while minimizing water quality degradation requires consideration of the P continuum from soils to freshwater and oceans. It also requires an international, interdisciplinary approach to monitoring and scientific research. This eBook brings together P studies in soil science, lakes, rivers, estuaries and oceans, with 74 authors from 12 countries in Asia, Europe and North America. The papers assembled here provide important new information to address knowledge gaps, cover P forms and cycling in soil and water, and identify key priorities for future research. Thus, the papers assembled here provide current and interdisciplinary information about P forms and their cycling along the soil-freshwater-ocean continuum, which is essential for environmentally sustainable P use.

Filled with figures, images, and illustrations, Encyclopedia of Water Science, Second Edition provides effective concepts and procedures in environmental water science and engineering. It unveils a wide spectrum of design concepts, methods, and solutions for enhanced performance of water quality, treatment, conservation, and irrigation methods, as well as improved water efficiency in industrial, municipal, and agricultural programs. The second edition also includes greatly enhanced coverage of streams and lakes as well as many regional case studies. An International Team Addresses Important Issues The only source to provide full coverage of current debates in the field, the encyclopedia offers professional expertise on vital issues including: Current laws and regulations Irrigation management Environmental water economics Agroforestry Erosion control Nutrient best management practices Water sanitation Stream and lake morphology and processes Sharpen Your Skills — Meet Challenges Well-Armed A direct and reliable source for best practices in water handling, preservation, and recovery, the encyclopedia examines challenges in the provision of safe water supplies, guiding environmental professionals as they face a worldwide demand for sanitary and affordable water reserves. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) e-reference@taylorandfrancis.com International: (Tel) +44 (0) 20 7017 6062; (E-mail) online.sales@tandf.co.uk

An essential resource for all Australian and New Zealand gardeners who care about their family’s health and the environment Organic gardening leaves your patch of earth in a better condition than when you found it by working with nature rather than against it. A practicable and better alternative to chemical-dependent and environmentally unsustainable cultivation practices, organic gardening prevents soil damage, and results in more nutritious food, and fewer contaminated waterways and poison-resistant pests. Written by a certified-organic farmer and gardener, Easy Organic Gardening and Moon Planting is an indispensable reference to organic cultivation methods. It also contains an easy-to-follow moon-planting guide to help gardeners to work with the cycles of nature, listing the best planting, harvesting, and pruning days from 2017 to 2022. Full of common sense and wisdom, and written in a friendly, conversational voice, this book includes comprehensive information and advice about: how to protect your garden from climate change and save water how to revitalise garden soil and keep it healthy how to use composting and worm-farming techniques to transform garden and kitchen waste into top-quality, organic fertiliser how to grow your own fruit and vegetables in garden beds or pots how to raise healthier, pest- and disease-resistant seedlings, shrubs, and trees — without using poisons. This wide-ranging book also features an extensive listing of Australian native plants, and a month-by-month diary of what to plant when for all climate zones of Australia and New Zealand. For aspiring and experienced gardeners alike, Easy Organic Gardening and Moon Planting will make your whole garden more vigorous, and a healthier haven for your family, pets, and native fauna.

Soil as a medium for plant growth;soil as a natural body;soil physicalproperties;tillage and traffic;soil water; soil water management;soil erosion;soil ecology;soil organic matter;soil mineralogy;soil chemistry;plant-soil macronutrient relations;micronutrients and toxic elements;fertilizers;soil fertility evaluation and fertilizer use;soil genesis;soil taxonomy;soil geography and land use;soil surveys and land-use interpretations;land and the world food supply;texture by the field method;types and classes of soil structure;prefixes and their connotations for great group names.