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The Immobilization and Retention of Nitrate in Soil by Biochar
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Identifier: CSBE16048
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Published in: CSBE-SCGAB Technical Conferences » AGM Halifax 2016
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Description: Loss of nitrate, a mobile form of N, from agricultural land production systems to surface and groundwaters have been a concern because of environmental and human health issues. Application of biochar has been found to decrease leaching of nutrients, including nitrate, from both tropical and temperate region soils. However, little is known about the effectiveness on soils from cold regions such as Eastern Canada. A laboratory study using column leaching experiments was conducted to determine whether biochars can immobilize and retain nitrates in a local soil. The columns were packed with soils containing different amount and types of biochar and was leached for 27 weeks. Nitrates in the leachate were analyzed and the results showed a significant reduction of nitrate immediately following the addition of chemical nitrate in the columns receiving biochar treatments. With the 5g/kg application rate, the four types of biochars showed similar level of reduction on average. Increased application rate of 10g/kg had little additional reduction for wood waste biochar and medium temperature manure biochar, however, the significant improvement were observed for mixed hardwood biochar and high temperature manure biochar. All four types of biochars effectively retained nitrate in the selected soil. The 10g/kg mixed hard wood biochar was the with the highest retention rate of nitrate and the lowest variability of results.
Keywords: Biochar, Nutrient Retention, Leaching
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Citation: . 2016. The Immobilization and Retention of Nitrate in Soil by Biochar. CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Volume:
Issue:
Pages -
Contributor:
Date: juil-16
Technical field:
Conference name: CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Session name: Session 2A: Water Management II
Other information:
Type: Text.Article
Format: PDF
Publication type: Conference Proceeding
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: Loss of nitrate, a mobile form of N, from agricultural land production systems to surface and groundwaters have been a concern because of environmental and human health issues. Application of biochar has been found to decrease leaching of nutrients, including nitrate, from both tropical and temperate region soils. However, little is known about the effectiveness on soils from cold regions such as Eastern Canada. A laboratory study using column leaching experiments was conducted to determine whether biochars can immobilize and retain nitrates in a local soil. The columns were packed with soils containing different amount and types of biochar and was leached for 27 weeks. Nitrates in the leachate were analyzed and the results showed a significant reduction of nitrate immediately following the addition of chemical nitrate in the columns receiving biochar treatments. With the 5g/kg application rate, the four types of biochars showed similar level of reduction on average. Increased application rate of 10g/kg had little additional reduction for wood waste biochar and medium temperature manure biochar, however, the significant improvement were observed for mixed hardwood biochar and high temperature manure biochar. All four types of biochars effectively retained nitrate in the selected soil. The 10g/kg mixed hard wood biochar was the with the highest retention rate of nitrate and the lowest variability of results.
Keywords: Biochar, Nutrient Retention, Leaching
Résumé:
Mots-clés:
Citation: . 2016. The Immobilization and Retention of Nitrate in Soil by Biochar. CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Volume:
Issue:
Pages -
Contributor:
Date: juil-16
Technical field:
Conference name: CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Session name: Session 2A: Water Management II
Other information:
Type: Text.Article
Format: PDF
Publication type: Conference Proceeding
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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