Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system.
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1011709 |
Resumo: | The main objective of this study was to assess the impact of biochar rate (0, 8, 16 and 32 Mg ha-1) on the water retention capacity (WRC) of a sandy loam Dystric Plinthosol. The applied biochar was a by-product of slow pyrolysis (~450 °C) of eucalyptus wood, milled to pass through a 2000 micrometers sieve that resulted in a material with an intrinsic porosity less than or equal to 10 micrometers and a specific surface area of ~3.2 m2 g-1. The biochar was incorporated into the top 15 cm of the soil under an aerobic rice system. Our study focused on both the effects on WRC and rice yields 2 and 3 years after its application. Undisturbed soil samples were collected from 16 plots in two soil layers (5-10 and 15-20 cm). Soil water retention curves were modelled using a nonlinear mixed model which appropriately accounts for uncertainties inherent of spatial variability and repeated measurements taken within a specific soil sample. We found an increase in plant-available water in the upper soil layer proportional to the rate of biochar, with about 0.8% for each Mg ha-1 biochar amendment 2 and 3 years after its application. The impact of biochar on soil WRC was most likely related to an effect in overall porosity of the sandy loam soil, which was evident from an increase in saturated soil moisture and macro porosity with 0.5 and 1.6% for each Mg ha-1 of biochar applied, respectively. The increment in soil WRC did not translate into an increase in rice yield, essentially because in both seasons the amount of rainfall during the critical period for rice production exceeded 650 mm. The use of biochar as a soil amendment can be a worthy strategy to guarantee yield stability under short-term water-limited conditions. Our findings raise the importance of assessing the feasibility of very high application rates of biochar and the inclusion of a detailed analysis of its physical and chemical properties as part of future investigations. |
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Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system.BiocarvãoCarvãoArrozRetenção de água no soloSolo arenosoOryza SativaBiocharRiceSoil water retentionSandy loam soilsThe main objective of this study was to assess the impact of biochar rate (0, 8, 16 and 32 Mg ha-1) on the water retention capacity (WRC) of a sandy loam Dystric Plinthosol. The applied biochar was a by-product of slow pyrolysis (~450 °C) of eucalyptus wood, milled to pass through a 2000 micrometers sieve that resulted in a material with an intrinsic porosity less than or equal to 10 micrometers and a specific surface area of ~3.2 m2 g-1. The biochar was incorporated into the top 15 cm of the soil under an aerobic rice system. Our study focused on both the effects on WRC and rice yields 2 and 3 years after its application. Undisturbed soil samples were collected from 16 plots in two soil layers (5-10 and 15-20 cm). Soil water retention curves were modelled using a nonlinear mixed model which appropriately accounts for uncertainties inherent of spatial variability and repeated measurements taken within a specific soil sample. We found an increase in plant-available water in the upper soil layer proportional to the rate of biochar, with about 0.8% for each Mg ha-1 biochar amendment 2 and 3 years after its application. The impact of biochar on soil WRC was most likely related to an effect in overall porosity of the sandy loam soil, which was evident from an increase in saturated soil moisture and macro porosity with 0.5 and 1.6% for each Mg ha-1 of biochar applied, respectively. The increment in soil WRC did not translate into an increase in rice yield, essentially because in both seasons the amount of rainfall during the critical period for rice production exceeded 650 mm. The use of biochar as a soil amendment can be a worthy strategy to guarantee yield stability under short-term water-limited conditions. Our findings raise the importance of assessing the feasibility of very high application rates of biochar and the inclusion of a detailed analysis of its physical and chemical properties as part of future investigations.MARCIA THAIS DE MELO CARVALHO, CNPAF; ALINE DE HOLANDA NUNES MAIA, CNPMA; BEATA EMOKE MADARI, CNPAF; LAMMERT BASTIAANS, Wageningen University; PEPIJN A J VAN OORT, Wageningen University; ALEXANDRE BRYAN HEINEMANN, CNPAF; MELLISSA ANANIAS SOLER DA SILVA, CNPAF; FABIANO ANDRE PETTER, UFMT; B H MARIMON JUNIOR, UFMT; H MEINKE, Wageningen University.CARVALHO, M. T. de M.MAIA, A. de H. N.MADARI, B. E.BASTIAANS, L.VAN OORT, P. A. J.HEINEMANN, A. B.SILVA, M. A. S. daPETTER, F. A.MARIMON JUNIOR, B. H.MEINKE, H.2015-03-18T11:11:11Z2015-03-18T11:11:11Z2015-03-1820142015-03-18T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSolid Earth, Göttingen, v. 5, p. 939-952, 2014.http://www.alice.cnptia.embrapa.br/alice/handle/doc/101170910.5194/se-5-939-2014enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T02:08:57Zoai:www.alice.cnptia.embrapa.br:doc/1011709Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T02:08:57falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T02:08:57Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system. |
title |
Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system. |
spellingShingle |
Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system. CARVALHO, M. T. de M. Biocarvão Carvão Arroz Retenção de água no solo Solo arenoso Oryza Sativa Biochar Rice Soil water retention Sandy loam soils |
title_short |
Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system. |
title_full |
Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system. |
title_fullStr |
Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system. |
title_full_unstemmed |
Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system. |
title_sort |
Biochar increases plant-available water in a sandy loam soil under an aerobic rice crop system. |
author |
CARVALHO, M. T. de M. |
author_facet |
CARVALHO, M. T. de M. MAIA, A. de H. N. MADARI, B. E. BASTIAANS, L. VAN OORT, P. A. J. HEINEMANN, A. B. SILVA, M. A. S. da PETTER, F. A. MARIMON JUNIOR, B. H. MEINKE, H. |
author_role |
author |
author2 |
MAIA, A. de H. N. MADARI, B. E. BASTIAANS, L. VAN OORT, P. A. J. HEINEMANN, A. B. SILVA, M. A. S. da PETTER, F. A. MARIMON JUNIOR, B. H. MEINKE, H. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
MARCIA THAIS DE MELO CARVALHO, CNPAF; ALINE DE HOLANDA NUNES MAIA, CNPMA; BEATA EMOKE MADARI, CNPAF; LAMMERT BASTIAANS, Wageningen University; PEPIJN A J VAN OORT, Wageningen University; ALEXANDRE BRYAN HEINEMANN, CNPAF; MELLISSA ANANIAS SOLER DA SILVA, CNPAF; FABIANO ANDRE PETTER, UFMT; B H MARIMON JUNIOR, UFMT; H MEINKE, Wageningen University. |
dc.contributor.author.fl_str_mv |
CARVALHO, M. T. de M. MAIA, A. de H. N. MADARI, B. E. BASTIAANS, L. VAN OORT, P. A. J. HEINEMANN, A. B. SILVA, M. A. S. da PETTER, F. A. MARIMON JUNIOR, B. H. MEINKE, H. |
dc.subject.por.fl_str_mv |
Biocarvão Carvão Arroz Retenção de água no solo Solo arenoso Oryza Sativa Biochar Rice Soil water retention Sandy loam soils |
topic |
Biocarvão Carvão Arroz Retenção de água no solo Solo arenoso Oryza Sativa Biochar Rice Soil water retention Sandy loam soils |
description |
The main objective of this study was to assess the impact of biochar rate (0, 8, 16 and 32 Mg ha-1) on the water retention capacity (WRC) of a sandy loam Dystric Plinthosol. The applied biochar was a by-product of slow pyrolysis (~450 °C) of eucalyptus wood, milled to pass through a 2000 micrometers sieve that resulted in a material with an intrinsic porosity less than or equal to 10 micrometers and a specific surface area of ~3.2 m2 g-1. The biochar was incorporated into the top 15 cm of the soil under an aerobic rice system. Our study focused on both the effects on WRC and rice yields 2 and 3 years after its application. Undisturbed soil samples were collected from 16 plots in two soil layers (5-10 and 15-20 cm). Soil water retention curves were modelled using a nonlinear mixed model which appropriately accounts for uncertainties inherent of spatial variability and repeated measurements taken within a specific soil sample. We found an increase in plant-available water in the upper soil layer proportional to the rate of biochar, with about 0.8% for each Mg ha-1 biochar amendment 2 and 3 years after its application. The impact of biochar on soil WRC was most likely related to an effect in overall porosity of the sandy loam soil, which was evident from an increase in saturated soil moisture and macro porosity with 0.5 and 1.6% for each Mg ha-1 of biochar applied, respectively. The increment in soil WRC did not translate into an increase in rice yield, essentially because in both seasons the amount of rainfall during the critical period for rice production exceeded 650 mm. The use of biochar as a soil amendment can be a worthy strategy to guarantee yield stability under short-term water-limited conditions. Our findings raise the importance of assessing the feasibility of very high application rates of biochar and the inclusion of a detailed analysis of its physical and chemical properties as part of future investigations. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2015-03-18T11:11:11Z 2015-03-18T11:11:11Z 2015-03-18 2015-03-18T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Solid Earth, Göttingen, v. 5, p. 939-952, 2014. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1011709 10.5194/se-5-939-2014 |
identifier_str_mv |
Solid Earth, Göttingen, v. 5, p. 939-952, 2014. 10.5194/se-5-939-2014 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1011709 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
dc.source.none.fl_str_mv |
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Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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EMBRAPA |
institution |
EMBRAPA |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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