Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorunicampTenelli, Sarah-
dc.contributor.authorunicampBarbosa, Leandro Carneiro-
dc.titleCan reduced tillage sustain sugarcane yield and soil carbon if straw is removed?pt_BR
dc.contributor.authorTenelli, Sarah-
dc.contributor.authorde Oliveira Bordonal, Ricardo-
dc.contributor.authorBarbosa, Leandro Carneiro-
dc.contributor.authorNunes Carvalho, Joao Luis-
dc.subjectSistemas agricolaspt_BR
dc.subjectMatéria orgânica do solopt_BR
dc.subject.otherlanguageAgricultural systemspt_BR
dc.subject.otherlanguageSoil organic matterpt_BR
dc.description.abstractStraw removal for bioelectricity, cellulosic ethanol, or other bio-products has become a common practice in Brazilian sugarcane areas, but long-term effects on soil organic carbon (SOC) and yield are unknown. Our objective was to quantify tillage intensity and removal levels on SOC stocks and sugarcane yield on contrasting edaphoclimatic conditions in Brazil. Conventional tillage-CT and reduced tillage-RT coupled with three straw removal levels (none-NR; moderate-MR; total-TR) were combined to create six treatment combinations: CTNR, CTMR, CTTR, RTNR, RTMR, and RTTR, respectively. Sugarcane yield was measured annually and soil samples to a depth of 40 cm were collected and analyzed before and after 5 years of treatments. Neither tillage practices nor straw removal significantly affected sugarcane yield on sandy loam soil, but CTMR, CTTR, and RTTR showed substantial yield reductions on clayey soil. SOC stocks for RTNR increased by as much as 1.64 Mg ha(-1) year(-1) on clayey soil, while CTMR and CTTR favored depletion of SOC stocks on both soils. Overall, each Mg of straw returned to the soil increased SOC stock by 95 kg ha(-1) for clayey soil under both tillage practices and 55 kg ha(-1) for sandy loam under the CT system. Furthermore, straw removal decreased microbial biomass C and b-glucosidase activity. These findings suggest that the adoption of RT attenuates the adverse impacts of straw removal on SOC stocks while ensuring sugarcane yields for a more sustainable bioenergy production in Brazilpt_BR
dc.relation.ispartofBioenergy researchpt_BR
dc.relation.ispartofabbreviationBioenerg. res.pt_BR
dc.publisher.cityNew York, NYpt_BR
dc.publisher.countryEstados Unidospt_BR
dc.description.provenanceSubmitted by Cintia Oliveira de Moura ( on 2020-03-23T17:47:49Z No. of bitstreams: 0en
dc.description.provenanceMade available in DSpace on 2020-03-23T17:47:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2019en
dc.contributor.unidadeFaculdade de Engenharia de Alimentospt_BR
dc.contributor.unidadeFaculdade de Engenharia de Alimentospt_BR
dc.subject.keywordTillage systemspt_BR
dc.subject.keywordSaccharum spppt_BR
dc.subject.keywordSoil enzymatic activitypt_BR
dc.subject.keywordMicrobial biomass carbonpt_BR
dc.subject.keywordCrop residuespt_BR
dc.creator.orcidsem informaçãopt_BR
dc.type.formArtigo de Periódicopt_BR
Appears in Collections:FEA - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.