Download or read book Phosphorus Dynamics in Waste Amended Soils written by Mustafa Nawaz Shafqat and published by . This book was released on 2002 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modification of RZWQM2 P Model to Simulate Subsurface Phosphorus Loss and Soil Phosphorus Dynamics in Organic Waste Amended Croplands written by Peng Pan and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "While agriculture consumes 80-90% of the world's annual phosphorus (P) production, only 20% is utilized effectively by plants, the remaining is lost to the aquatic environment or accumulate in the soil. The RZWQM2-P model was newly developed and then incorporated into the RZWQM2 model working as a single tool to describe P activities in the agricultural field. The objectives of this study were (1) to evaluate the accuracy and rationality of the RZWQM2-P model and improve its logic and algorithm; using the newly-developed RZWQM2-P model (2) to investigate the long-term P losses to tile drainage flow as affected by tillage and compost amendment in Harrow experimental site Ontario; (3) to figure out soil P level recovery ability from high manure amendment in Idaho site. Four parts of the model algorithm received modification during simulation, including tillage mix efficiency, initial P pools partition, soil P dynamic and P stress. In the simulation of Harrow site, the model accurately simulated field-measured annual drainage water flow, as well as particulate P (PP) and total P (TP) losses in tile drainage, while underestimated dissolved reactive P (DRP) when organic wastes were applied. Long-term simulation results showed that an increase in tillage intensity (TI) and manure/compost P mix efficiency (ME) with soil by tillage decreased tile drainage flow and tile-drainage-borne P losses respectively. Specifically, when TI increased from 0 (no-till) to 0.93 (moldboard plow), drainage flow, DRP, and PP losses decreased by 11.49%, 48.12%, and 30.29%, respectively. Similarly, when ME increased from 0 (no-till) to 0.5 (Tandem Disk), DRP and PP losses through drainage flow reduced by 53.98% and 30.95%, respectively. In Idaho site simulation, the model well simulated field-measured annual soil total P (P_tot), plant P uptake (P_upt) and crop yield and acceptably simulated soil labile P (P_lab). Long-term simulation results showed that the soil needs to take 14 years to consume additional P from 8-year manure amendment on surface soil layers. Overall, the modified RZWQM2-P model can accurately simulate most P loss through drainage though DRP loss prediction still needs to be improved, and the model simulated soil P_lab and P_tot completely at the first time and achieved satisfactory results. Therefore, it is crucial to determine the various best management practices (BMPs) to help substantially mitigate unnecessary phosphate consumption and the risk of P pollution"--
Download or read book Evaluation of Phosphorus Accumulation and Loss Dynamics in Manure Amended Soils of New York written by Elizabeth Hall Brock and published by . This book was released on 2006 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inositol Phosphates written by Benjamin L. Turner and published by CABI. This book was released on 2007 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inositol phosphates are a group of organic compounds found widely in the natural environment. They are important in agriculture because they constitute most of the phosphorus in grain seeds, but they cannot be digested by some animals. As a result, considerable research has been directed towards improving the digestibility of inositol phosphates in animal diets. Inositol phosphates are also abundant in soils and water bodies, yet a clear understanding of their behaviour in the environment remains elusive. This is surprising given the importance of phosphorus in the nutrition of both terrestrial and aquatic ecosystems. Written by leading experts, this book brings together critical reviews on inositol phosphates in agriculture, ecology, and the environment. The sixteen chapters cover a diverse range of topics, including the synthesis and hydrolysis of inositol phosphates, their role in animal nutrition, and their fate in soils and aquatic ecosystems. It will prove valuable to a wide readership in the agricultural and biological sciences, and will serve as a unique reference source on this emerging topic.
Download or read book Phosphorus Dynamics in Soils Irrigated with Municipal Wastewater written by and published by . This book was released on 1977 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Phosphorus Dynamics Under Annual Or Single Applications of Alkaline Treated Biosolids written by Weixi Shu and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Land application of biosolids as a soil fertility amendment is an alternative to traditional disposal methods. The influence of annual Alkaline Treated Biosolids (ATB) land application on phosphorus (P) dynamics in acidic soils needs to be better understood for more efficient P management. This study examines plant uptake, plant available, soil total phosphorus (P) content and potential P accumulation as a function of rate and frequency of application of an ATB amended to an agricultural soil over four years. The results suggest that applying high rates of ATB annually can increase the soil pH, Mehlich 3 and water extractable P, and crop P uptake in an acidic agricultural soil. No significant soil P accumulation was observed and P related environmental concerns were limited in this study. Potential soil P accumulation and higher P loss needs to be considered with annual high ATB rates application over a longer period study.
Download or read book Biochar Application written by T. Komang Ralebitso-Senior and published by Elsevier. This book was released on 2016-05-07 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biochar Application: Essential Soil Microbial Ecology outlines the cutting-edge research on the interactions of complex microbial populations and their functional, structural, and compositional dynamics, as well as the microbial ecology of biochar application to soil, the use of different phyto-chemical analyses, possibilities for future research, and recommendations for climate change policy. Biochar, or charcoal produced from plant matter and applied to soil, has become increasingly recognized as having the potential to address multiple contemporary concerns, such as agricultural productivity and contaminated ecosystem amelioration, primarily by removing carbon dioxide from the atmosphere and improving soil functions. Biochar Application is the first reference to offer a complete assessment of the various impacts of biochar on soil and ecosystems, and includes chapters analyzing all aspects of biochar technology and application to soil, from ecogenomic analyses and application ratios to nutrient cycling and next generation sequencing. Written by a team of international authors with interdisciplinary knowledge of biochar, this reference will provide a platform where collaborating teams can find a common resource to establish outcomes and identify future research needs throughout the world. Includes multiple tables and figures per chapter to aid in analysis and understanding Includes a comprehensive table of the methods used within the contents, ecosystems, contaminants, future research, and application opportunities explored in the book Includes knowledge gaps and directions of future research to stimulate further discussion in the field and in climate change policy Outlines the latest research on the interactions of complex microbial populations and their functional, structural, and compositional dynamics Offers an assessment of the impacts of biochar on soil and ecosystems
Download or read book 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 published by . This book was released on 2010 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phosphorus Requirements in Soils Amended with Organic Materials written by Ronaldo Severiano Berton and published by . This book was released on 1987 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The addition of organic residues to the soil may modify the amounts of plant available phosphorus (P) found in this ssytem. These studies were undertaken to evaluate the suitability of the sorption isotherm technique for estimating the amounts of inorganic P required for optimum plant growth, the correlation of P availability with the amount of P extracted by three chemical methods, and with the activity of two phosphatase enzymes, when soils were amended with organic materials. Acid phosphatase and phosphodiesterase activities were also compared with the P availability to plants. Soil phosphodiesterase activity correlated better with corn yield and plant uptake than acid phosphatase activity. The correlation of phosphodiesterase activity with microbial activity might be used to indicate the contribution of the soil organic P pool in the P supply to the plant.
Download or read book Legacy Phosphorus in Agriculture Role of Past Management and Perspectives for the Future written by Luke Gatiboni and published by Frontiers Media SA. This book was released on 2021-01-07 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phosphorus Reactions and Leaching Potential in Soils Amended with Organic Wastes written by Muhammad Tariq Siddique and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Effect of Wastewater Treatment Process on Soil Phosphorus and Runoff Phosphorus Losses from Biosolids amended Soils Under a Simulated Rainfall written by Chad John Penn and published by . This book was released on 2001 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Processes in Soils written by M. A. Tabatabai and published by . This book was released on 2005 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Humic Substances in Terrestrial Ecosystems written by A. Piccolo and published by Elsevier. This book was released on 1996-06-07 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the increasing importance of humic substances in the different scientific fields related to terrestrial ecology, soil quality conservation, and environmental chemistry. It shows that modern humic substances research is not only directed to unravel their yet ill-defined chemical structure but is successfully exploring the interconnected chemical, biological, and physical processes that maintain the ecological equilibrium of soil and ensure a sustainable agricultural production. The book will primarily be of interest to soil scientists and to ecological and environmental scientists. People in the fields of forest science, agronomy, analytical and environmental chemistry, water science, environmental engineering, and coal science will also find this publication worthy of their attention.
Download or read book Environmental Fate and Leaching of Phosphorus in Manure Amended Soils written by Morteza Mozaffari and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Inorganic and Organic Amendments on Soil Phosphorus Chemistry in Calcareous Soils written by Yuki Audette and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
