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Permanent link (DOI): https://doi.org/10.7939/R3DJ58N4R

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Theses and Dissertations

Effect of Biochar on Ammonification and Nitrification in a Coarse Sandy Soil Open Access

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Other title
Subject/Keyword
Biochar
Nitrification
Ammonification
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Samborsky, Shawn
Supervisor and department
Dyck, Miles (Renewable Resources)
Examining committee member and department
MacKenzie, M Derek (Renewable Resources)
Ramirez, Guillermo H (Renewable Resources)
Department
Department of Renewable Resources
Specialization
Land Reclamation and Remediation
Date accepted
2016-09-29T13:33:58Z
Graduation date
2016-06:Fall 2016
Degree
Master of Science
Degree level
Master's
Abstract
The addition of biochar to soil is believed to have positive effects on soil nutrient retention. Enhanced cation exchange capacity, water holding capacity and soil aeration are thought to be some of the benefits provided by biochar. In Alberta, reclamation of disturbed sites may be hastened by the addition of soil amendments and biochar is being studied as one possible option. More conventional amendments such as chemical fertilizer, compost, peat and forest floor material have been previously studied and compared in a reclamation setting. The objectives of the work presented in this thesis are to determine the effects of biochar on: 1) the fate of nitrogen applied to a nutrient-deficient, coarse-textured forest soil in the form of both inorganic and organic fertilizers; 2) the biological processes of ammonification and nitrification 3) the physical attributes responsible for nitrogen retention such as sorption of organic nitrogen and ammonium by negatively charged sites. The results of the experiments summarized in this thesis found that biochar reduced nitrogen leaching at an application rate of 25 tonne ha-1 and that biochar increased soil retention of nitrogen fertilizer, however the biological effects of biochar on ammonification and nitrification of soil organic nitrogen, can lead to nitrogen losses from soil, offsetting the increased storage capacity. The alteration of soil biogeochemistry by biochar in this experiment resulted in increased nitrification.
Language
English
DOI
doi:10.7939/R3DJ58N4R
Rights
This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
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