Plant Availability of Phosphorus and Heavy Metals in Soils Amended with Chemically-treated Sewage Sludge PDF Download
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Author: Wesley Dean Gestring
Publisher:
ISBN:
Category : Eutrophication
Languages : en
Pages : 250
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Author: Wesley Dean Gestring
Publisher:
ISBN:
Category : Eutrophication
Languages : en
Pages : 250
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Book Description
Author: Nand Kumar Fageria
Publisher: CRC Press
ISBN: 142007511X
Category : Science
Languages : en
Pages : 448
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Book Description
Put Theory into Practice Scarcity of natural resources, higher costs, higher demand, and concerns about environmental pollution- under these circumstances, improving food supply worldwide with adequate quantity and quality is fundamental. Based on the author's more than forty years of experience, The Use of Nutrients in Crop Plants
Author: E. M. Wollan
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 139
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Author: Ronaldo Severiano Berton
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 290
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Book Description
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.
Author: Jack E. Rechcigl
Publisher: CRC Press
ISBN: 9780873718592
Category : Technology & Engineering
Languages : en
Pages : 522
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Book Description
This book presents a comprehensive and balanced overview of soil amendments and their effect on the environment. It encompasses both positive and negative aspects of chemical fertilizers that supply nitrogen, phosphorous, sulfur, lime, micronutrients, and trace metals. Pros and cons are discussed with respect to the optimal and the most environmentally sound use of soil amendments, and guidance is provided on how to minimize the environmental effects of amendments. Natural fertilizers, including manure, sludge, fly ash, phosphogypsum, and byproduct gypsum are also discussed. Alternative agronomic practices and biotechnology that ameliorate or minimize potential adverse effects of fertilizer use are examined in detail. This authoritative and up-to-date treatise is multidisciplinary in nature and international in scope, a powerful reference tool for researchers, a thorough guide for practitioners and policy makers, and an excellent text book for academic courses.
Author: D. B. Cohen
Publisher:
ISBN:
Category : Eaux usées
Languages : en
Pages : 152
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Book Description
Lysimeter experiments in which crops were grown on agricultural soils treated with anaerobically digested sewage sludges (from plants where phosphorus removal was being practised using metal salts) were initiated in 1972 and 1973. Alum, iron and lime treated fluid sludges were added to loamy sand and silt loam soils vegetated with orchard grass. Similarly, alum, iron and lime treated air-dried sludges were added to sand and clay soils and wheat crops were grown. The high application rates of fluid and air-dried sludges ranged From 32 to 76 and 47 to 144 tons dry wt/ha/yr, respectively. The metal loadings approximated the recommended maxima for Ontario agricultural land. The lower rates were one-third and two-thirds of the high rates. The results of these experiments are presented and compared to results from field and greenhouse studies. There was no evidence that the aluminum, iron or lime in the digested sludges was detrimental to crop production or plant tissue quality. Orchard grass yields from the f1uid sludge experiment appeared to be related to nitrogen avai1abi1ity. Ìn general t land application of sewage sludges at rates sufficient to supply the crop uptake of N and P would limit soil heavy metal loadings to acceptable levels for the sludges used in these lysimeter studies.
Author: T. M. Younos
Publisher: ASCE Publications
ISBN: 9780784475836
Category : Technology & Engineering
Languages : en
Pages : 100
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Book Description
Prepared by the Task Committee on Land Application of Sludge of the Committee on Water Pollution Management of the Environmental Engineering Division of ASCE. This report presents research on the land application of wastewater sludge, especially quantitative and qualitative aspects of soil-sludge interaction. Each year, approximately 6.2 million dry metric tons of wastewater sludge are produced by municipal wastewater treatment facilities in the United States. The annual sludge production is expected to reach 12 million dry metric tons by the year 2000. Sludge use and disposal options include incineration, ocean disposal, marketing of processed sludge, landfilling, and land application. Land application of sludge is achieved by spreading the sludge over the ground surface or incorporating it within the topsoil by injection, disking, or plowing. Sludge is applied to agricultural and forest lands for its nutrient value and to disturbed areas for soil amendment and reclamation purposes. At present, land application is the logical alternative because of its environmental and economic advantages over the other methods. Topics include: mechanisms for the removal of nitrogen and phosphorus, the role of trace elements, hydrologic effects of soil-sludge interaction, use of municipal sludge to reclaim mined land, and health effects. The report concludes with recommendations for future research.
Author: Alexander James Pastene
Publisher:
ISBN:
Category : Phosphorus in soils
Languages : en
Pages : 314
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Book Description
Author:
Publisher:
ISBN:
Category : Mine safety
Languages : en
Pages : 404
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Book Description
Author: Majid Ghorayshi
Publisher:
ISBN:
Category : Heavy metals
Languages : en
Pages : 64
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Book Description
