Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions
The growing need to improve soil fertility and enhance crop production has led to increase in the nitrogenous (N) fertilizer use, which could result in detrimental effects due to the possible increase in greenhouse gas (GHG) emissions and nitrate leaching losses. Therefore, there is a pressing need...
Main Author: | |
---|---|
Format: | Thesis |
Language: | English |
Published: |
Memorial University of Newfoundland
2021
|
Subjects: | |
Online Access: | https://research.library.mun.ca/15315/ https://research.library.mun.ca/15315/1/thesis.pdf |
id |
ftmemorialuniv:oai:research.library.mun.ca:15315 |
---|---|
record_format |
openpolar |
spelling |
ftmemorialuniv:oai:research.library.mun.ca:15315 2023-10-01T03:57:39+02:00 Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions Eissa, Riad Omar Abosalahe Omar 2021 application/pdf https://research.library.mun.ca/15315/ https://research.library.mun.ca/15315/1/thesis.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/15315/1/thesis.pdf Eissa, Riad Omar Abosalahe Omar <https://research.library.mun.ca/view/creator_az/Eissa=3ARiad_Omar_Abosalahe_Omar=3A=3A.html> (2021) Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions. Doctoral (PhD) thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 2021 ftmemorialuniv 2023-09-03T06:50:12Z The growing need to improve soil fertility and enhance crop production has led to increase in the nitrogenous (N) fertilizer use, which could result in detrimental effects due to the possible increase in greenhouse gas (GHG) emissions and nitrate leaching losses. Therefore, there is a pressing need to address the negative environmental effects of nitrogen fertilizer use through better management practices. Biochar applications to the agricultural soils have been recognized as a unique strategy for improving soil fertility, mitigating GHG emission, enhancing carbon sequestration, and plant nutrient use efficiencies by increasing nutrients uptake while reducing the leachate losses. Considering multidimensional benefits of biochar, the current study investigated the effects of different biochar application rates on podzolic soil fertility, GHGs mitigation potential, soil nitrogen dynamics, crop productivity and forage quality in eastern Newfoundland podzolic soils. The first experiment was conducted to assess the nitrate adsorption potential of four different biochar feedstocks including, spruce-bark biochar at 550⁰C (SB550), hardwood biochar at 500⁰C (HW500), fir/spruce biochar at 427⁰C (FS427), and softwood biochar at 500⁰C (SW500). The results showed that SB550 has the highest nitrate adsorption capacity (184 mg g⁻¹) among others. The second experiment was conducted in a greenhouse with five rates of SB550 and two N application levels to (i) investigate the capability of biochar application for improving the soil fertility, forage production, forage quality, and nutrient uptake, (ii) assess their effects on soil total nitrogen (TN), nitrate (NO₃⁻), ammonium (NH₄⁺) dynamics and dissolved organic carbon (DOC). Results indicated that biochar application significantly improved soil pH, Soil Organic Matter (SOM), Cation Exchange Capacity (CEC), and available nutrients in the soil. Moreover, SB550 biochar has significantly reduced NO₃⁻, NH₄⁺, TN, and DOC in the leachate compared to the control treatment. The third ... Thesis Newfoundland Memorial University of Newfoundland: Research Repository |
institution |
Open Polar |
collection |
Memorial University of Newfoundland: Research Repository |
op_collection_id |
ftmemorialuniv |
language |
English |
description |
The growing need to improve soil fertility and enhance crop production has led to increase in the nitrogenous (N) fertilizer use, which could result in detrimental effects due to the possible increase in greenhouse gas (GHG) emissions and nitrate leaching losses. Therefore, there is a pressing need to address the negative environmental effects of nitrogen fertilizer use through better management practices. Biochar applications to the agricultural soils have been recognized as a unique strategy for improving soil fertility, mitigating GHG emission, enhancing carbon sequestration, and plant nutrient use efficiencies by increasing nutrients uptake while reducing the leachate losses. Considering multidimensional benefits of biochar, the current study investigated the effects of different biochar application rates on podzolic soil fertility, GHGs mitigation potential, soil nitrogen dynamics, crop productivity and forage quality in eastern Newfoundland podzolic soils. The first experiment was conducted to assess the nitrate adsorption potential of four different biochar feedstocks including, spruce-bark biochar at 550⁰C (SB550), hardwood biochar at 500⁰C (HW500), fir/spruce biochar at 427⁰C (FS427), and softwood biochar at 500⁰C (SW500). The results showed that SB550 has the highest nitrate adsorption capacity (184 mg g⁻¹) among others. The second experiment was conducted in a greenhouse with five rates of SB550 and two N application levels to (i) investigate the capability of biochar application for improving the soil fertility, forage production, forage quality, and nutrient uptake, (ii) assess their effects on soil total nitrogen (TN), nitrate (NO₃⁻), ammonium (NH₄⁺) dynamics and dissolved organic carbon (DOC). Results indicated that biochar application significantly improved soil pH, Soil Organic Matter (SOM), Cation Exchange Capacity (CEC), and available nutrients in the soil. Moreover, SB550 biochar has significantly reduced NO₃⁻, NH₄⁺, TN, and DOC in the leachate compared to the control treatment. The third ... |
format |
Thesis |
author |
Eissa, Riad Omar Abosalahe Omar |
spellingShingle |
Eissa, Riad Omar Abosalahe Omar Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions |
author_facet |
Eissa, Riad Omar Abosalahe Omar |
author_sort |
Eissa, Riad Omar Abosalahe Omar |
title |
Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions |
title_short |
Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions |
title_full |
Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions |
title_fullStr |
Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions |
title_full_unstemmed |
Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions |
title_sort |
effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (ghg) emissions |
publisher |
Memorial University of Newfoundland |
publishDate |
2021 |
url |
https://research.library.mun.ca/15315/ https://research.library.mun.ca/15315/1/thesis.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
https://research.library.mun.ca/15315/1/thesis.pdf Eissa, Riad Omar Abosalahe Omar <https://research.library.mun.ca/view/creator_az/Eissa=3ARiad_Omar_Abosalahe_Omar=3A=3A.html> (2021) Effect of biochar on soil fertility, nitrate losses, dissolved organic carbon, forage crop production and greenhouse gas (GHG) emissions. Doctoral (PhD) thesis, Memorial University of Newfoundland. |
op_rights |
thesis_license |
_version_ |
1778529594927742976 |