Soil microbial activity as an indicator of soil fertility : the long-term effects of municipal sewage sludge on an arid soil (MS)

Persistent Link:
http://hdl.handle.net/10150/192064
Title:
Soil microbial activity as an indicator of soil fertility : the long-term effects of municipal sewage sludge on an arid soil (MS)
Author:
Brendecke, Jeffrey Walter.
Issue Date:
1992
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
This study measured the effects of four years of municipal, anaerobically digested sewage sludge application on long-term soil microbial activity in a Pima clay loam (Typic Torrifluvent) growing Upland cotton (Gossypium hirsutum L.). Treatments were one unfertilized control, sludge applied at optimum rates for plant growth (based on N requirements), and sludge applied at three times the optimum rates (a total of 8.01 and 24.2 Mg ha⁻¹ (dry weight over four years)). Soil microbial activity was measured by viable heterotrophic plate counts for bacteria, actinomycetes and fungi; acridine orange direct counts for bacteria; the dehydrogenase assay; and carbon dioxide evolution analysis. As the high sludge treatment significantly reduced cotton plant stand and significantly stimulated some parameters of microbial activity (dehydrogenase activity and CO₂ evolution), soil microbial activity may not serve as a reliable predictive index of plant response to sludge-applied pollutants.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Soil microbial ecology.; Soil fertility.; Sewage sludge.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Soil and Water Science; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Pepper, Ian L.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleSoil microbial activity as an indicator of soil fertility : the long-term effects of municipal sewage sludge on an arid soil (MS)en_US
dc.creatorBrendecke, Jeffrey Walter.en_US
dc.contributor.authorBrendecke, Jeffrey Walter.en_US
dc.date.issued1992en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThis study measured the effects of four years of municipal, anaerobically digested sewage sludge application on long-term soil microbial activity in a Pima clay loam (Typic Torrifluvent) growing Upland cotton (Gossypium hirsutum L.). Treatments were one unfertilized control, sludge applied at optimum rates for plant growth (based on N requirements), and sludge applied at three times the optimum rates (a total of 8.01 and 24.2 Mg ha⁻¹ (dry weight over four years)). Soil microbial activity was measured by viable heterotrophic plate counts for bacteria, actinomycetes and fungi; acridine orange direct counts for bacteria; the dehydrogenase assay; and carbon dioxide evolution analysis. As the high sludge treatment significantly reduced cotton plant stand and significantly stimulated some parameters of microbial activity (dehydrogenase activity and CO₂ evolution), soil microbial activity may not serve as a reliable predictive index of plant response to sludge-applied pollutants.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshSoil microbial ecology.en_US
dc.subject.lcshSoil fertility.en_US
dc.subject.lcshSewage sludge.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineSoil and Water Scienceen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairPepper, Ian L.en_US
dc.contributor.committeememberBohn, Hinrich L.en_US
dc.contributor.committeememberWierenga, Peter J.en_US
dc.identifier.oclc228029802en_US
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