Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1013414
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorSOARES, J. Rpt_BR
dc.contributor.authorCANTARELLA, H.pt_BR
dc.contributor.authorVARGAS, V. Ppt_BR
dc.contributor.authorCARMO, J. B. dopt_BR
dc.contributor.authorMARTINS, A. Apt_BR
dc.contributor.authorSOUSA, R. de M.pt_BR
dc.contributor.authorANDRADE, C. A. dept_BR
dc.date.accessioned2015-04-14T05:57:17Z-
dc.date.available2015-04-14T05:57:17Z-
dc.date.created2015-04-13pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationJournal of Environmental Quality, Madison, v. 44. n. 2, p. 423-430, 2015.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1013414pt_BR
dc.descriptionAbstract: The environmental benefits of producing biofuels from sugarcane have been questioned due to greenhouse gas emissions during the biomass production stage, especially nitrous oxide (N2O) associated with nitrogen (N) fertilization. The objective of this work was to evaluate the use of nitrification inhibitors (NIs) dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) and a controlled-release fertilizer (CRF) to reduce N2O emissions from urea, applied at a rate of 120 kg ha?1 of N. Two field experiments in ratoon cycle sugarcane were performed in Brazil. The treatments were (i) no N (control), (ii) urea, (iii) urea+DCD, (iv) urea+DMPP, and (v) CRF. Measurements of N2O fluxes were performed using static chambers with four replications. The measurements were conducted three times per week during the first 3 mo and biweekly afterward for a total of 217 and 382 d in the first and second seasons, respectively. The cumulative N2O?N emissions in the first ratoon cycle were 1098 g ha?1 in the control treatment and 1924 g ha?1 with urea (0.7% of the total N applied). Addition of NIs to urea reduced N2O emissions by more than 90%, which did not differ from those of the plots without N. The CRF treatment showed N2O emissions no different from those of urea. The results were similar in the second ratoon: the treatment with urea showed N2O emissions of 0.75% of N applied N. Application of NIs resulted in a strong reduction in N2O emissions, but CRF increased emissions compared with urea. We therefore conclude that both NIs can be options for mitigation of greenhouse gas emission in sugarcane used for bioenergy.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectÓxido nítricopt_BR
dc.titleEnhanced-efficiency fertilizers in nitrous oxide emissions from urea applied to sugarcane.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2015-04-14T05:57:17Zpt_BR
dc.subject.thesagroFertilizantept_BR
dc.subject.thesagroUreiapt_BR
dc.subject.thesagroCana de açúcarpt_BR
dc.subject.thesagroImpacto ambientalpt_BR
dc.subject.nalthesaurusUreapt_BR
dc.subject.nalthesaurusNitrogen fertilizerspt_BR
dc.subject.nalthesaurusSugarcanept_BR
dc.subject.nalthesaurusEnvironmental impactpt_BR
dc.subject.nalthesaurusNitrous oxidept_BR
dc.subject.nalthesaurusGreenhouse effectpt_BR
riaa.ainfo.id1013414pt_BR
riaa.ainfo.lastupdate2015-04-13pt_BR
dc.contributor.institutionJOHNNY RODRIGUES SOARES, IAC; HEITOR CANTARELLA, IAC; VITOR PAULO VARGAS, IAC; JANAINA BRAGA DO CARMO, IAC; ACACIO AGOSTINHO MARTINS, IAC; RAFAEL DE MELO SOUSA, IAC; CRISTIANO ALBERTO DE ANDRADE, CNPMA.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CNPMA)

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
2014AP65.pdf466,02 kBAdobe PDFThumbnail
Visualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace