The priming potential of biochar products in relation to labile carbon contents and soil organic matter status

Cross, Andrew; Sohi, Saran

doi:10.1016/j.soilbio.2011.06.016

Cited by 436 publications

(283 citation statements)

References 27 publications

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“…Em laboratório, cujas condições de temperatura e umidade para degradação dos compostos orgânicos são controladas, o efeito "priming" pode ocorrer como consequência de compostos orgânicos solúveis no biocarvão (Luo et al, 2011). Esses compostos são responsáveis pelo estímulo à atividade microbiana, em curto período, na incubação do biocarvão com solo, o que define inclusive a taxa de mineralização de C do biocarvão (Smith et al, 2010;Cross & Sohi, 2011;Bruun & El-Zehery, 2012). A ocorrência ou não de efeito "priming" é associada a características quantitativas e qualitativas da matéria orgânica do próprio solo, à dose de biocarvão utilizada e à fração solúvel de C no biocarvão (Luo et al, 2011).…”

Section: Resultsunclassified

Mineralização e efeitos de biocarvão de cama de frangosobre a capacidade de troca catiônica do solo

Andrade

Bibar²,

Coscione

et al. 2015

Pesq. agropec. bras.

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O objetivo deste trabalho foi caracterizar o processo de mineralização do C em amostras de cama de frango e de seu respectivo biocarvão, além de determinar a capacidade de troca catiônica (CTC) e as taxas de mineralização do C nos solos tratados com cama de frango e biocarvão. A mineralização do C foi avaliada em experimento com quantificação do C-CO2 liberado a partir de incubação (64 dias) de misturas de solo com cama de frango e de solo com biocarvão, em doses equivalentes a 0, 1.000, 2.000, 4.000 e 8.000 mg kg-1 de C. Ao final da incubação, determinaram-se, nas amostras de solo, o teor de C, o pH e a CTC. A mineralização do C dos materiais obedeceu à cinética química de primeira ordem. Os fluxos de C-CO2 foram mais intensos dos 20 aos 40 dias de incubação, seguidos da redução desses fluxos até a estabilização no tempo. As taxas de mineralização do C da cama de frango e de seu biocarvão foram respectivamente de 49,7 e 5,1%. Incrementos da CTC foram observados nos tratamentos com biocarvão, em consequência da elevação do pH, e, em ambos os materiais, em consequência de alterações do teor de C no solo.

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Section: Resultsunclassified

Mineralização e efeitos de biocarvão de cama de frangosobre a capacidade de troca catiônica do solo

Andrade

Bibar²,

Coscione

et al. 2015

Pesq. agropec. bras.

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“…Aside from these methods, a very interesting technique, not usually cited in quantification studies and reviews (Glaser et al, 1998;Schmidt et al, 2001;Masiello, 2004;Simpson and Hatcher, 2004;Brodowski et al, 2005;Hammes et al, 2007;Koide et al, 2011;Wiedemeier et al, 2015), is the C stable isotopic ratio (δ 13 C) (Bird and Ascough, 2012), which is widely used in studies on biochar mineralization and priming (Hamer et al, 2004;Cross and Sohi, 2011;Keith et al, 2011;Luo et al, 2011;Fang et al, 2015;Rittl et al, 2015b), but still uncommon for pyrogenic C quantification. The application of biochar with isotopically distinct δ 13 C values of the native soil organic matter (distinct photosynthetic pathway) would provide a powerful tool, aside from tracing the fate of pyrogenic C in the environment, as reference method to study quantification and stability (e.g.…”

Section: Quantification Of Pyrogenic Cmentioning

confidence: 99%

Biochar: Pyrogenic Carbon for Agricultural Use - A Critical Review

Novotny

Maia

Carvalho

et al. 2015

Rev. Bras. Ciênc. Solo

168

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Biochar (carbonized biomass for agricultural use) has been used worldwide as soil amendment and is a technology of particular interest for Brazil, since its "inspiration" is from the historical Terra Preta de Índios (Amazon Dark Earth), and also because Brazil is the world's largest charcoal producer, generating enormous residue quantities in form of fine charcoal and due to the availability of different residual biomasses, mainly from agroindustry (e.g., sugar-cane bagasse; wood and paper-mill wastes; residues from biofuel industries; sewage sludge etc), that can be used for biochar production, making Brazil a key actor in the international scenario in terms of biochar research and utilization). In the last decade, numerous studies on biochar have been carried out and now a vast literature, and excellent reviews, are available. The objective of this paper is therefore to deliver a critical review with some highlights on biochar research, rather than an exhaustive bibliographic review. To this end, some key points considered critical and relevant were selected and the pertinent literature "condensed", with a view to guide future research, rather than analyze trends of the past.

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“…The reasons for a great amount of the C added as RC remaining in the soil after rice cultivation are still unclear from the present study. The major possible reasons are that micropores on RC could probably have increased fine root and root hair development in it (Lehmann et al 2011), and that biochar-soil interaction suppressed soil C decomposition through soil organic matter sorption to biochar and physical protection of soil organic matter within soil aggregates, as reported by previous studies (Kasozi et al 2010;Cross and Sohi 2011;Jones et al 2011;Zimmerman et al 2011). Further studies are needed to demarcate soil C and the C added as RC and RH, and to discuss their long-term fate in soil separately.…”

Section: Soil C Sequestrationmentioning

confidence: 91%

Increase in soil carbon sequestration using rice husk charcoal without stimulating CH₄and N₂O emissions in an Andosol paddy field in Japan

Koyama

Inazaki

Minamikawa

et al. 2015

Soil Science and Plant Nutrition

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Biochar application has been recognized as an effective option for promoting carbon (C) sequestration, but it may also affect the production and consumption of methane (CH 4 ) and nitrous oxide (N 2 O) in soil. A 1-year field experiment was conducted to investigate the effects of rice husk charcoal application on rice (Oryza sativa L.) productivity and the balance of greenhouse gas exchanges in an Andosol paddy field. The experiment compared the treatments of rice husk charcoal applied at 10, 20 and 40 Mg ha −1 (RC10, RC20 and RC40, respectively), rice husk applied at 20 Mg ha −1 (RH20), and the control (CONT). Rice straw and grain yields did not significantly differ among the treatments. The seasonal cumulative CH 4 emissions were 38-47% higher from RC10, RC20 and RC40 than from the CONT. However, the increases were not in proportion to the application rates of rice husk charcoal, and their values did not significantly differ from the CONT. On the contrary, the RH20 treatment significantly increased the cumulative CH 4 emission by 227% compared to the CONT. The N 2 O emissions during the measurement were not affected by the treatments. As a result, the combined global warming potential (GWP) of CH 4 and N 2 O emissions was significantly higher in RH20 than in the other treatments. There was a positive linear correlation between C storage in the top 10 cm of soil and the application rate of rice husk charcoal. The increases in soil C contents compared to the CONT corresponded to 98-149% of the C amounts added as rice husk charcoal and 41% of the C added as rice husk. Carbon dioxide (CO 2 ) fluxes in the off season were not significantly different among RC10, RC20, RC40 and CONT, indicating that C added as rice husk charcoal remained in the soil during the fallow period. The CO 2 equivalent balance between soil C sequestration and the combined GWP indicates that the rice husk charcoal treatments stored more C in soil than the CONT, whereas the RH20 emitted more C than the CONT. These results suggest that rice husk charcoal application will contribute to mitigating global warming without sacrificing rice yields.

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The priming potential of biochar products in relation to labile carbon contents and soil organic matter status

Cited by 436 publications

References 27 publications

Mineralização e efeitos de biocarvão de cama de frangosobre a capacidade de troca catiônica do solo

Mineralização e efeitos de biocarvão de cama de frangosobre a capacidade de troca catiônica do solo

Biochar: Pyrogenic Carbon for Agricultural Use - A Critical Review

Increase in soil carbon sequestration using rice husk charcoal without stimulating CH₄and N₂O emissions in an Andosol paddy field in Japan

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The priming potential of biochar products in relation to labile carbon contents and soil organic matter status

Cited by 436 publications

References 27 publications

Mineralização e efeitos de biocarvão de cama de frangosobre a capacidade de troca catiônica do solo

Mineralização e efeitos de biocarvão de cama de frangosobre a capacidade de troca catiônica do solo

Biochar: Pyrogenic Carbon for Agricultural Use - A Critical Review

Increase in soil carbon sequestration using rice husk charcoal without stimulating CH4and N2O emissions in an Andosol paddy field in Japan

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Product

Resources

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Increase in soil carbon sequestration using rice husk charcoal without stimulating CH₄and N₂O emissions in an Andosol paddy field in Japan