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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
02/01/2025 |
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Data da última atualização: |
02/01/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CHAGAS, J. K. M.; NARDOTO, G. B.; MADARI, B. E.; FIGUEIREDO, C. C. de. |
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Afiliação: |
JHON KENEDY MOURA CHAGAS, UNIVERSIDADE DE BRASÍLIA; GABRIELA BIELEFELD NARDOTO, UNIVERSIDADE DE BRASÍLIA; BEATA EMOKE MADARI, CNPAF; CÍCERO CÉLIO DE FIGUEIREDO, UNIVERSIDADE DE BRASÍLIA. |
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Título: |
Seven-year effects of sewage sludge biochar on soil organic carbon pools and yield: Understanding the role of biochar on carbon sequestration and productivity. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Soil Use and Management, v. 40, n. 4, e70001, Oct. 2024. |
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ISSN: |
1475-2743 |
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DOI: |
https://doi.org/10.1111/sum.70001 |
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Idioma: |
Inglês |
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Conteúdo: |
The increasing need for sustainable agricultural practices and climate change mitigation has driven research into biochar's role in enhancing soil carbon (C) sequestration and fertility. This study aimed to investigate the long-term effects of sewage sludge biochar (SSB), prepared at different temperatures (300 and 500°C), combined or not with mineral fertilizer application, on soil C stocks and organic matter fractions, addressing whether SSB can improve soil C sequestration. In the first two growing seasons (2015–2016), SSB was applied at 15 t ha−1 (dry weight) per crop and incorporated into the top 0.2 m of soil using a rotary hoe before planting. Over 7 years, soil samples were collected from the 0–0.2 m depth post-harvest each season to analyse total C, total N, and various organic matter fractions, including easily oxidizable organic C, permanganate-oxidizable C, non-oxidizable C, humic substances, particulate C, and mineral-associated C. Results demonstrate that SSB application enhances soil total C (up to 9.5%) and total N levels (up to 28.8%), indicating improved soil fertility and C sequestration potential. Notably, SSB amendments increased the non-oxidizable organic C pool (up to 11.9%), contributing to soil organic matter stabilization. While the easily oxidizable organic C pool was increased under SSB at 300°C (up to 7.7%), the permanganate oxidizable C pool was not affected by treatments, suggesting that SSB primarily affects more recalcitrant C fractions, essential for long-term C sequestration. Additionally, SSB application substantially increased crop yield, with higher grain yield (up to 105.0%) and shoot biomass (up to 75.1%) observed over multiple growing seasons. However, a decline in corn yield from the fourth season onwards in SSB-only treatments highlights a limited capacity of biochar to sustain long-term productivity. These findings underscore the effectiveness of SSB in enhancing soil C pools and its potential role in sustainable agricultural practices. Future research should focus on long-term field studies under various environmental conditions and explore the potential of co-pyrolysis of sewage sludge with other feedstocks to enhance C stability. The broader adoption of biochar technology could play a vital role in mitigating climate change and promoting sustainable agricultural development. MenosThe increasing need for sustainable agricultural practices and climate change mitigation has driven research into biochar's role in enhancing soil carbon (C) sequestration and fertility. This study aimed to investigate the long-term effects of sewage sludge biochar (SSB), prepared at different temperatures (300 and 500°C), combined or not with mineral fertilizer application, on soil C stocks and organic matter fractions, addressing whether SSB can improve soil C sequestration. In the first two growing seasons (2015–2016), SSB was applied at 15 t ha−1 (dry weight) per crop and incorporated into the top 0.2 m of soil using a rotary hoe before planting. Over 7 years, soil samples were collected from the 0–0.2 m depth post-harvest each season to analyse total C, total N, and various organic matter fractions, including easily oxidizable organic C, permanganate-oxidizable C, non-oxidizable C, humic substances, particulate C, and mineral-associated C. Results demonstrate that SSB application enhances soil total C (up to 9.5%) and total N levels (up to 28.8%), indicating improved soil fertility and C sequestration potential. Notably, SSB amendments increased the non-oxidizable organic C pool (up to 11.9%), contributing to soil organic matter stabilization. While the easily oxidizable organic C pool was increased under SSB at 300°C (up to 7.7%), the permanganate oxidizable C pool was not affected by treatments, suggesting that SSB primarily affects more recalcitrant C fractions, esse... Mostrar Tudo |
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Palavras-Chave: |
Biossólido biocarvão; Frações de matéria orgânica; Long-term field study; Organic matter fractions; Sequestro de carbono do solo. |
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Thesagro: |
Agricultura Sustentável; Carbono. |
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Thesaurus Nal: |
Carbon; Soil organic matter; Sustainable agriculture. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03399naa a2200301 a 4500
001 2171105
005 2025-01-02
008 2024 bl uuuu u00u1 u #d
022 $a1475-2743
024 7 $ahttps://doi.org/10.1111/sum.70001$2DOI
100 1 $aCHAGAS, J. K. M.
245 $aSeven-year effects of sewage sludge biochar on soil organic carbon pools and yield$bUnderstanding the role of biochar on carbon sequestration and productivity.$h[electronic resource]
260 $c2024
520 $aThe increasing need for sustainable agricultural practices and climate change mitigation has driven research into biochar's role in enhancing soil carbon (C) sequestration and fertility. This study aimed to investigate the long-term effects of sewage sludge biochar (SSB), prepared at different temperatures (300 and 500°C), combined or not with mineral fertilizer application, on soil C stocks and organic matter fractions, addressing whether SSB can improve soil C sequestration. In the first two growing seasons (2015–2016), SSB was applied at 15 t ha−1 (dry weight) per crop and incorporated into the top 0.2 m of soil using a rotary hoe before planting. Over 7 years, soil samples were collected from the 0–0.2 m depth post-harvest each season to analyse total C, total N, and various organic matter fractions, including easily oxidizable organic C, permanganate-oxidizable C, non-oxidizable C, humic substances, particulate C, and mineral-associated C. Results demonstrate that SSB application enhances soil total C (up to 9.5%) and total N levels (up to 28.8%), indicating improved soil fertility and C sequestration potential. Notably, SSB amendments increased the non-oxidizable organic C pool (up to 11.9%), contributing to soil organic matter stabilization. While the easily oxidizable organic C pool was increased under SSB at 300°C (up to 7.7%), the permanganate oxidizable C pool was not affected by treatments, suggesting that SSB primarily affects more recalcitrant C fractions, essential for long-term C sequestration. Additionally, SSB application substantially increased crop yield, with higher grain yield (up to 105.0%) and shoot biomass (up to 75.1%) observed over multiple growing seasons. However, a decline in corn yield from the fourth season onwards in SSB-only treatments highlights a limited capacity of biochar to sustain long-term productivity. These findings underscore the effectiveness of SSB in enhancing soil C pools and its potential role in sustainable agricultural practices. Future research should focus on long-term field studies under various environmental conditions and explore the potential of co-pyrolysis of sewage sludge with other feedstocks to enhance C stability. The broader adoption of biochar technology could play a vital role in mitigating climate change and promoting sustainable agricultural development.
650 $aCarbon
650 $aSoil organic matter
650 $aSustainable agriculture
650 $aAgricultura Sustentável
650 $aCarbono
653 $aBiossólido biocarvão
653 $aFrações de matéria orgânica
653 $aLong-term field study
653 $aOrganic matter fractions
653 $aSequestro de carbono do solo
700 1 $aNARDOTO, G. B.
700 1 $aMADARI, B. E.
700 1 $aFIGUEIREDO, C. C. de
773 $tSoil Use and Management$gv. 40, n. 4, e70001, Oct. 2024.
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