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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Solos. |
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Data corrente: |
13/07/2015 |
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Data da última atualização: |
09/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RITTL, T. F.; NOVOTNY, E. H.; BALIEIRO, F. C.; HOFFLAND, E.; ALVES, B. J. R.; KUYPER, T. W. |
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Afiliação: |
T. F. RITTL, WAGENINGEN UNIVERSITY; ETELVINO HENRIQUE NOVOTNY, CNPS; FABIANO DE CARVALHO BALIEIRO, CNPS; E. HOFFLAND, WAGENINGEN UNIVERSITY; BRUNO JOSE RODRIGUES ALVES, CNPAB; T. W. KUYPER, WAGENINGEN UNIVERSITY. |
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Título: |
Negative priming of native soil organic carbon mineralization by oilseed biochars of contrasting quality. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
European Journal of Soil Science, v. 66, n. 4, p. 714-721, Jul. 2015. |
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DOI: |
https://doi.org/10.1111/ejss.12257 |
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Idioma: |
Inglês |
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Conteúdo: |
Oilseed-derived biochar, a by-product of pyrolysis for biodiesel production, is richer in aliphatic compounds than the commonly studied wood-derived biochar, affecting both its mineralization in soil and its interaction with native soil organic carbon (nSOC). Here, we investigated the soil C sequestration potential of three different oilseed biochars derived from C3 plant material: soyabean, castor bean and jatropha cake. The chemical composition of these biochars was determined by elemental analysis (CHN) and 13C NMR spectroscopy. The cumulative CO2 efflux from 30-day laboratory incubations of biochar mixed with a sandy soil containing nSOC from C4 plants was measured as a proxy for mineralization rate. The relative contribution of each source to CO2 production was calculated based on the 13C-signatures of total CO2 efflux and the source materials (soil and biochars). Our results showed that: (i) castor bean biochar contained relatively large amounts of aliphatic compounds, resulting in a greater mineralization rate than soyabean and jatropha biochars; (ii) CO2 efflux from the soil-biochar mixtures originated mostly from the biochars, suggesting that these biochars contain rapidly decomposable compounds; and (iii) all three oilseed biochars decelerated nSOC mineralization. This negative priming effect appeared to be caused by different factors. We conclude that oilseed biochars have the potential to increase soil C stocks directly and increase soil C sequestration indirectly in the short term through negative priming of nSOC mineralization. MenosOilseed-derived biochar, a by-product of pyrolysis for biodiesel production, is richer in aliphatic compounds than the commonly studied wood-derived biochar, affecting both its mineralization in soil and its interaction with native soil organic carbon (nSOC). Here, we investigated the soil C sequestration potential of three different oilseed biochars derived from C3 plant material: soyabean, castor bean and jatropha cake. The chemical composition of these biochars was determined by elemental analysis (CHN) and 13C NMR spectroscopy. The cumulative CO2 efflux from 30-day laboratory incubations of biochar mixed with a sandy soil containing nSOC from C4 plants was measured as a proxy for mineralization rate. The relative contribution of each source to CO2 production was calculated based on the 13C-signatures of total CO2 efflux and the source materials (soil and biochars). Our results showed that: (i) castor bean biochar contained relatively large amounts of aliphatic compounds, resulting in a greater mineralization rate than soyabean and jatropha biochars; (ii) CO2 efflux from the soil-biochar mixtures originated mostly from the biochars, suggesting that these biochars contain rapidly decomposable compounds; and (iii) all three oilseed biochars decelerated nSOC mineralization. This negative priming effect appeared to be caused by different factors. We conclude that oilseed biochars have the potential to increase soil C stocks directly and increase soil C sequestration indirectl... Mostrar Tudo |
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Palavras-Chave: |
Carbono do solo; Pinhão manso. |
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Thesagro: |
Mamão; Soja. |
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Thesaurus Nal: |
biochar. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02327naa a2200253 a 4500
001 2019691
005 2021-11-09
008 2015 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/ejss.12257$2DOI
100 1 $aRITTL, T. F.
245 $aNegative priming of native soil organic carbon mineralization by oilseed biochars of contrasting quality.$h[electronic resource]
260 $c2015
520 $aOilseed-derived biochar, a by-product of pyrolysis for biodiesel production, is richer in aliphatic compounds than the commonly studied wood-derived biochar, affecting both its mineralization in soil and its interaction with native soil organic carbon (nSOC). Here, we investigated the soil C sequestration potential of three different oilseed biochars derived from C3 plant material: soyabean, castor bean and jatropha cake. The chemical composition of these biochars was determined by elemental analysis (CHN) and 13C NMR spectroscopy. The cumulative CO2 efflux from 30-day laboratory incubations of biochar mixed with a sandy soil containing nSOC from C4 plants was measured as a proxy for mineralization rate. The relative contribution of each source to CO2 production was calculated based on the 13C-signatures of total CO2 efflux and the source materials (soil and biochars). Our results showed that: (i) castor bean biochar contained relatively large amounts of aliphatic compounds, resulting in a greater mineralization rate than soyabean and jatropha biochars; (ii) CO2 efflux from the soil-biochar mixtures originated mostly from the biochars, suggesting that these biochars contain rapidly decomposable compounds; and (iii) all three oilseed biochars decelerated nSOC mineralization. This negative priming effect appeared to be caused by different factors. We conclude that oilseed biochars have the potential to increase soil C stocks directly and increase soil C sequestration indirectly in the short term through negative priming of nSOC mineralization.
650 $abiochar
650 $aMamão
650 $aSoja
653 $aCarbono do solo
653 $aPinhão manso
700 1 $aNOVOTNY, E. H.
700 1 $aBALIEIRO, F. C.
700 1 $aHOFFLAND, E.
700 1 $aALVES, B. J. R.
700 1 $aKUYPER, T. W.
773 $tEuropean Journal of Soil Science$gv. 66, n. 4, p. 714-721, Jul. 2015.
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| 3. |  | MELO, S. de S. C. de; SOUZA, P. de P. L. R. de; SILVA, E. S. A.; MORAES, A. J. G. de. Paradigma tecnológico na agricultura: o caso da cultivar de açaí BRS-Pará. In: SIMPÓSIO SOBER NORTE, 1., 2017, Belém, PA. Anais... Belém, PA: SOBER NORTE, 2017.| Tipo: Artigo em Anais de Congresso |
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