Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129729
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorNASCIMENTO, A. F. do
dc.contributor.authorOLIVEIRA, C. M. de
dc.contributor.authorPEDREIRA, B. C. e
dc.contributor.authorPEREIRA, D. H.
dc.contributor.authorRODRIGUES, R. de A. R.
dc.date.accessioned2022-01-29T02:06:21Z-
dc.date.available2022-01-29T02:06:21Z-
dc.date.created2021-02-01
dc.date.issued2021
dc.identifier.citationGrassland Science, v. 67, n. 1, p. 63-72, Jan. 2021
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1129729-
dc.descriptionIn the Brazilian Amazon, nitrogen input strategies are required to maintain forage-livestock systems productivity. However, greenhouse gases (GHG) emissions mitigation from tropical soils is also a global demand. This research aims to assess productivity and nitrous oxide (N2O) emissions from Oxisol cultivated with Marandu palisade grass (Brachiaria brizantha [Hochst. Ex A.Rich.] Stapf) submitted to nitrogen (N) input strategies (N fertilization and biological N fixation) in the Brazilian Amazon. The treatments were the following: control (unfertilized); U40 (fertilized with 40 kg N/ha as urea); U80 (fertilized with 80 kg N/ha as urea); AS40 (fertilized with 40 kg N/ha as ammonium sulfate); AS80 (fertilized with 80 kg N/ha as ammonium sulfate); and IAB (inoculated with Azospirillum brasilense ). From January to March 2016, soil N2O emission, forage accumulation (FA) and relative emission (RE) were assessed during two 28-day cycles. The FA was greater in the U80 and AS80 than in control and IAB. The highest peaks of soil N2O flux occurred from 4 to 7 days after N fertilization, primarily in the highest N rates treatments. Overall, 40 kg N/ha resulted in higher N2O flux than control and IAB, which were lower than 80 kg N/ha regardless of the N source. The lowest fluxes occurred in the control and IAB (below 20 ug N-N2O m-2 hr-1). All of the emission factors (EF) calculated for both fertilizers and rates were lower than 0.35%, which is below the 1% established by the IPCC. Our results indicate the need for discussion of the EF in the pasture intensification to contribute to avoid deforestation and mitigating emissions. The inputs of 40 kg N/ha per application with urea or ammonium sulfate, due to the low EF and RE, are recommended as a pasture N input strategy in the Brazilian Amazon.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectMitigação
dc.titleNitrous oxide emissions and forage accumulation in the Brazilian Amazon forage-livestock systems submitted to N input strategies.
dc.typeArtigo de periódico
dc.subject.thesagroMudança Climática
dc.subject.thesagroFertilizante
dc.subject.thesagroPecuária
dc.subject.nalthesaurusClimate change
dc.subject.nalthesaurusLivestock
dc.subject.nalthesaurusFertilizers
riaa.ainfo.id1129729
riaa.ainfo.lastupdate2022-01-28
dc.identifier.doihttps://doi.org/10.1111/grs.12287
dc.contributor.institutionALEXANDRE FERREIRA DO NASCIMENTO, CPAMT; CARINE MOREIRA DE OLIVEIRA, UFMT; BRUNO CARNEIRO E PEDREIRA, CPAMT; DALTON HENRIQUE PEREIRA, UFMT; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS.
Aparece nas coleções:Artigo em periódico indexado (CPAMT)

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
2021-cpamt-bcp-nitroux-oxide-emissions-forage-accumulation-brazilian-amazon-forage-livestock-systems-input-strategies.pdf896,71 kBAdobe PDFThumbnail
Visualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace