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dc.contributor.advisorChen, Chengrong
dc.contributor.authorZhang, Hanzhien_US
dc.date.accessioned2018-01-23T02:17:25Z
dc.date.available2018-01-23T02:17:25Z
dc.date.issued2016en_US
dc.identifier.urihttp://hdl.handle.net/10072/365362
dc.description.abstractPhosphorus (P) is a limiting nutrient for crops in many parts of the world, especially in the tropics, due to low P availability in soils. Biochar has attracted increasing attention as a potential soil conditioner, due to its ability to increase P availability in soils. However, how biochar contributes to P availability and influences P transformation in soils is largely unknown. This PhD research project (a) investigated changes in biochar characteristics as a function of feedstock type and pyrolysis temperature, including biochar chemical composition and structures; (b) assessed P availability in four biochar thermosequences and P transformation during pyrolysis using a sequential extraction scheme in combination with 31P NMR studies; (c) assessed the ability of different biochars to retain phosphate and investigated corresponding retention mechanisms, and (d) investigated effects of biochar amendments on P availability and transformation in tropical soils under precisely-controlled laboratory conditions, over a short time period (12 weeks), and under field conditions over a longer time period (≥1 years).en_US
dc.languageEnglishen_US
dc.publisherGriffith Universityen_US
dc.publisher.placeBrisbaneen_US
dc.rights.copyrightThe author owns the copyright in this thesis, unless stated otherwise.en_US
dc.subject.keywordsPhosphorusen_US
dc.subject.keywordsBiocharen_US
dc.subject.keywordsPeanut shell as biocharen_US
dc.subject.keywordsSugarcane as biocharen_US
dc.subject.keywordsSoils, Tropical areasen_US
dc.titleBiochar Characteristics and Effects on Phosphorus Availability and Dynamics in Tropical Soilsen_US
dc.typeGriffith thesisen_US
gro.facultyScience, Environment, Engineering and Technologyen_US
gro.rights.copyrightThe author owns the copyright in this thesis, unless stated otherwise.
gro.hasfulltextFull Text
dc.contributor.otheradvisorBoyd, Sue
dc.contributor.otheradvisorGray, Evan
dc.rights.accessRightsPublicen_US
gro.identifier.gurtIDgu1485758690016en_US
gro.source.ADTshelfnoADT0en_US
gro.source.GURTshelfnoGURTen_US
gro.thesis.degreelevelThesis (PhD Doctorate)en_US
gro.thesis.degreeprogramDoctor of Philosophy (PhD)en_US
gro.departmentGriffith School of Environmenten_US
gro.griffith.authorZhang, Hanzhi


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