Biochar improves fertility of a clay soil in the brazilian savannah: short term effects and impact on rice yield

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dc.creatorCarvalho, Márcia Thais de Melo
dc.creatorMadari, Beata Emoke
dc.creatorBastiaans, Lammert
dc.creatorVan Oort, Pepijn A. J.
dc.creatorHeinemann, Alexandre Bryan
dc.creatorSilva, Mellissa Ananias Soler da
dc.creatorMaia, Aline de Holanda Nunes
dc.creatorMeinke, Holger
dc.date.accessioned2018-03-06T11:10:22Z
dc.date.available2018-03-06T11:10:22Z
dc.date.issued2013
dc.description.abstractThe objective of this study was to report single season effects of wood biochar (char) application coupled with N fer- tilization on soil chemical properties, aerobic rice growth and grain yield in a clayey Rhodic Ferralsol in the Brazilian Savannah. Char application effected an increase in soil pH, K, Ca, Mg, CEC, Mn and nitrate while decreasing Al content and potential acidity of soils. No distinct effect of char application on grain yield of aerobic rice was observed. We believe that soil properties impacted by char application were inconsequential for rice yields because neither wa- ter, low pH, nor the availability of K or P were limiting factors for rice production. Rate of char above 16 Mg ha −1 reduced leaf area index and total shoot dry matter by 72 days after sowing. The number of panicles infected by rice blast decreased with increasing char rate. Increased dry matter beyond the remobilization capacity of the crop, and high number of panicles infected by rice blast were the likely cause of the lower grain yield observed when more than 60 kg N ha −1 was applied. The optimal rate of N was 46 kg ha −1 and resulted in a rice grain yield above 3 Mg ha −1 .pt_BR
dc.identifier.citationCARVALHO, Márcia T. de Melo; MADARI, Beáta E.; BASTIAANS, Lammert; OORT VAN, Pepijn A. J.; HEINEMANN, Alexandre B.; SILVA, Mellissa A. S. da; MAIA, Aline de Holanda Nunes; MEINKE, Holger. Biochar improves fertility of a clay soil in the brazilian savannah: short term effects and impact on rice yield. Journal of Agriculture and Rural Development in the Tropics and Subtropics, Witzenhausen, v. 114, n. 2, p. 101-107, 2013.pt_BR
dc.identifier.issn2363-6033
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/13878
dc.language.isoengpt_BR
dc.publisher.countryAlemanhapt_BR
dc.publisher.departmentEscola de Agronomia e de Engenharia de Alimentos - EAEA (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectAerobic systempt_BR
dc.subjectOryza sativapt_BR
dc.subjectCarbonised biomasspt_BR
dc.subjectFerralsolpt_BR
dc.subjectNitrogenpt_BR
dc.subjectOxisolpt_BR
dc.titleBiochar improves fertility of a clay soil in the brazilian savannah: short term effects and impact on rice yieldpt_BR
dc.typeArtigopt_BR

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