Phosphorus In Soils And Plants
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Phosphorus In Soils And Plants
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Author : Naser A. Anjum
language : en
Publisher: BoD – Books on Demand
Release Date : 2024-01-31
Phosphorus In Soils And Plants written by Naser A. Anjum and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-01-31 with Technology & Engineering categories.
Phosphorus (P) stands second to nitrogen in terms of its essentiality as a plant macronutrient, as well as due to its involvement in almost all plant developmental stages, primary and secondary plant metabolisms, maintenance of membrane structures, and in the structural skeleton of major biomolecules. An optimum P-supply also helps plants combat abiotic stress impacts. Most P in soil remains unavailable for uptake by plants. P-containing fertilizers are being added to agricultural lands to sustain high yields. Only the least amount of the applied P (20%–30%) is used by most cultivated plants, and the rest remains as legacy P (P surpluses), which eventually causes eutrophication. This book, Phosphorus in Soils and Plants, reviews P in soils and plants, P dynamics in the soil–water–sediment environment, the major roles of P in the photosynthetic dark phase-biochemical pathways, major approaches for the sustainable management of P in agriculture, main mechanisms underlying the role of P in the regulation of plant–microbe interactions in the rhizosphere, literature on the role of microbial phosphate solubilization in management of soil and plant nutrients, and insights into P recovery through waste transformation. This volume is an important resource for plant biologists involved in teaching or research who wish to advance their knowledge of P in soils and plants.
The Role Of Phosphorus In Agriculture
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Author : F. E. Khasawneh
language : en
Publisher:
Release Date : 1980
The Role Of Phosphorus In Agriculture written by F. E. Khasawneh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Science categories.
World phosphate reserves and resources; The phosphate industry of the United States; Evaluation of phosphatic raw materials; Phosphate raw materials and fertilizers: part I - a look ahead; Phosphate raw materials and fertilizers: part II - a case history of marginal raw materials; Sulfur requirements of the phosphate fertilizer industry; Phosphoric acid technology; Phosphate fertilizers and process technology; World phosphate fertilizer supply-demand outlook; Energy requirements for the production of phosphate fertilizers; Energy of phosphate fertilizer applications and food energy returns; Reactions of phosphate fertilizers in soils; Agronomic effectiveness of phosphate fertilizers; Evaluation and utilization of residual phosphorus in soils; Use and limitations of physical-chemical criteria for assessing the status of phosphorus in soils; Assessing organic phosphorus in soils; Conventional soil and tissue tests for assessing the phosphorus status of soils; Management considerations for acid; Use of waste materials as sources of phosphorus; Agricultural phosphorus in the environment; Phosphate nutrition of plants - a general treatise; Soil-plant interactions in the phosphorus nutrition of plants; Role of rhizosphere microorganisms in phosphorus uptake by plants; Interactions of phosphorus with other elements in soils and in plants; Phosphate nutrition of corn, sorghum, soybeans, and small grains; Phosphorus nutrition of cotton, peanuts, rice, sugarcane, and tobacco; Phosphorus nutrition of vegetable crops and sugar beets; Phosphorus nutrition and fertilization of forest trees; Phosphorus nutrition of forages; Relationship between phosphorus nutrition of plants and the phosphorus nutrition of animals and man.
Estimation Of Available Phosphorus In Soils By Extraction With Sodium Bicarbonate
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Author : Sterling Robertson Olsen
language : en
Publisher:
Release Date : 1954
Estimation Of Available Phosphorus In Soils By Extraction With Sodium Bicarbonate written by Sterling Robertson Olsen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Soils categories.
Properties And Management Of Soils In The Tropics
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Author : Pedro A. Sanchez
language : en
Publisher: Cambridge University Press
Release Date : 2019-01-10
Properties And Management Of Soils In The Tropics written by Pedro A. Sanchez and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-10 with Business & Economics categories.
Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
The Ecophysiology Of Plant Phosphorus Interactions
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Author : Philip J. White
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-06-03
The Ecophysiology Of Plant Phosphorus Interactions written by Philip J. White and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-06-03 with Science categories.
Phosphorus (P) is an essential macronutrient for plant growth. It is as phosphate that plants take up P from the soil solution. Since little phosphate is available to plants in most soils, plants have evolved a range of mechanisms to acquire and use P efficiently – including the development of symbiotic relationships that help them access sources of phosphorus beyond the plant’s own range. At the same time, in agricultural systems, applications of inorganic phosphate fertilizers aimed at overcoming phosphate limitation are unsustainable and can cause pollution. This latest volume in Springer’s Plant Ecophysiology series takes an in-depth look at these diverse plant-phosphorus interactions in natural and agricultural environments, presenting a series of critical reviews on the current status of research. In particular, the book presents a wealth of information on the genetic and phenotypic variation in natural plant ecosystems adapted to low P availability, which could be of particular relevance to developing new crop varieties with enhanced abilities to grow under P-limiting conditions. The book provides a valuable reference material for graduates and research scientists working in the field of plant-phosphorus interactions, as well as for those working in plant breeding and sustainable agricultural development.
Phosphorus In Action
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Author : Else K. Bünemann
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-11-08
Phosphorus In Action written by Else K. Bünemann and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-11-08 with Science categories.
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.
Phosphorus In Agriculture 100 Zero
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Author : Ewald Schnug
language : en
Publisher: Springer
Release Date : 2016-06-14
Phosphorus In Agriculture 100 Zero written by Ewald Schnug and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-14 with Science categories.
The title ‘Phosphorus in Agriculture: 100 % Zero’ is synonymous for make-or-break. And it stands up to the promise. This book sends an important message as it delivers background information, intrinsic hypotheses, validation approaches and legal frameworks, all for balanced phosphorus fertilization in agriculture. This implies firstly that the phosphorus requirement of crop is fully satisfied by applying exclusively fertilizers which contain the nutrient in completely available form. Secondly, environmental demands through eutrophication and hazardous contaminants must not be compromised. The book identifies equally knowledge gaps and deficits in the transformation and implementation of research into practice. Bottom line is that research delivers the tools for a sustainable phosphorus management while legal frameworks are insufficient.
Summary Of Phosphorus Research In The United States Relating To Soils And Fertilizers
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Author : National Phosphorus Research Work Group
language : en
Publisher:
Release Date : 1950
Summary Of Phosphorus Research In The United States Relating To Soils And Fertilizers written by National Phosphorus Research Work Group and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1950 with Agricultural research categories.
Soil Phosphorus
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Author : Rattan Lal
language : en
Publisher: CRC Press
Release Date : 2016-09-19
Soil Phosphorus written by Rattan Lal and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-19 with Nature categories.
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 Dynamics In Soil And Plant Availability Of Fertilizers From Phosphorus Recycling Evaluated In Field And Pot Experiments
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Author : Ricardo Alfonso Cabeza Pérez
language : en
Publisher: Cuvillier Verlag
Release Date : 2010-09-10
Phosphorus Dynamics In Soil And Plant Availability Of Fertilizers From Phosphorus Recycling Evaluated In Field And Pot Experiments written by Ricardo Alfonso Cabeza Pérez and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-09-10 with Science categories.
The limited P resources make it necessary to recover P from waste materials. Different chemical and thermal processes are given resulting in P-fertilizers with different availability to the plants. We tested the P availability of recycled P products in comparison to standard P fertilizers triple superphosphate (TSP) and rock phosphate (RP) in a pot experiment. The experiment was performed on an acid (pH 4.4) and a neutral soil (pH 6.8) of low available P. Eight recycled P products were evaluated, 4 from chemical processes (3 magnesium ammonium-phosphate [MAP] of different sewage treatment plants and a precipitated calcium phosphate [Ca-P]) and 4 from thermal processes (a heavy metal depleted sewage sludge [Sl-ash], and alkali sinter phosphate [Sinter P], a cupola furnace slag from sewage sludge [Cupola slag] and a mono-incinerated meat and-bone meal [MB meal ash]). Plant availability was in the following order: in the acid soil, TSP ≥ MAP ≥ precipitate calcium phosphate (Ca-P) ≥ thermal products ≥ rock phosphate (RP). Although the products Sinter-P and Cupola slag were as effective as TSP, the first in the acid soil and the second in a neutral pH soil. To explain the differences in availability the P dynamics after fertilization was evaluated by a fractionation P extraction and the isotopically exchangeable P (IEP). The extractants and the order used in the sequential fractionation procedure were: anion exchange resins (resin-Pi), NaHCO3 0.5 M, NaOH 1 M, HCl 1 M, HCl concentrated and H2SO4 concentrated plus H2O2 (residual P). Phosphorus from MAP products was extracted mainly by resin-Pi, NaHCO3 and NaOH and was comparable to the fate of P from TSP. Ca-P was found mainly in resin-Pi, NaHCO3-Pi and NaOH-Pi in the acid soil. In the neutral soil, the P from Ca-P was not found in resin-Pi but in NaOH-Pi and in HCl 1M Pi. The thermal products were separated in two groups according to the extraction procedure. The P from the products Sinter-P and Cupola slag in the acid soil were found mainly in resin-Pi, NaHCO3-Pi and NaOH-Pi, however the amount of P found in resin Pi was in tendency lower than for TSP. The products Sl-ash and MB meal ash are in the second group, which were similar to RP. The P from these products was mainly found in HCl 1M-Pi fraction. The IEP in soils fertilized with MAP products increased in a similar amount than in soils fertilized with TSP in both soils. Calcium phosphate was more effective in the acid soil Düshorn being similar to the MAP products. The thermal Sinter-P showed an IEP comparable to TSP in the acid soil and the thermal product Cupola slag was similar to TSP in both soils. The other thermal products, Sl-ash and MB meal ash were ineffective to increase the IEP in both soils.