Carbon dioxide emissions under different soil tillage systems in mechanically harvested sugarcane

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorSilva-Olaya, A. M.
dc.creatorCerri, C. E P
dc.creatorLa Scala, N.
dc.creatorDias, C. T S
dc.creatorCerri, C. C.
dc.date2014-05-27T11:27:29Z
dc.date2016-10-25T18:41:01Z
dc.date2014-05-27T11:27:29Z
dc.date2016-10-25T18:41:01Z
dc.date2013-01-01
dc.date.accessioned2017-04-06T02:07:31Z
dc.date.available2017-04-06T02:07:31Z
dc.identifierEnvironmental Research Letters, v. 8, n. 1, 2013.
dc.identifier1748-9318
dc.identifier1748-9326
dc.identifierhttp://hdl.handle.net/11449/74209
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74209
dc.identifier10.1088/1748-9326/8/1/015014
dc.identifierWOS:000316998300077
dc.identifier2-s2.0-84876188035.pdf
dc.identifier2-s2.0-84876188035
dc.identifierhttp://dx.doi.org/10.1088/1748-9326/8/1/015014
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/894981
dc.descriptionSoil tillage and other methods of soil management may influence CO 2 emissions because they accelerate the mineralization of organic carbon in the soil. This study aimed to quantify the CO2 emissions under conventional tillage (CT), minimum tillage (MT) and reduced tillage (RT) during the renovation of sugarcane fields in southern Brazil. The experiment was performed on an Oxisol in the sugarcane-planting area with mechanical harvesting. An undisturbed or no-till (NT) plot was left as a control treatment. The CO2 emissions results indicated a significant interaction (p < 0.001) between tillage method and time after tillage. By quantifying the accumulated emissions over the 44 days after soil tillage, we observed that tillage-induced emissions were higher after the CT system than the RT and MT systems, reaching 350.09 g m-2 of CO2 in CT, and 51.7 and 5.5 g m-2 of CO2 in RT and MT respectively. The amount of C lost in the form of CO2 due to soil tillage practices was significant and comparable to the estimated value of potential annual C accumulation resulting from changes in the harvesting system in Brazil from burning of plant residues to the adoption of green cane harvesting. The CO 2 emissions in the CT system could respond to a loss of 80% of the potential soil C accumulated over one year as result of the adoption of mechanized sugarcane harvesting. Meanwhile, soil tillage during the renewal of the sugar plantation using RT and MT methods would result in low impact, with losses of 12% and 2% of the C that could potentially be accumulated during a one year period. © 2013 IOP Publishing Ltd.
dc.languageeng
dc.relationEnvironmental Research Letters
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBrazil
dc.subjectC footprint
dc.subjectCO2emissions
dc.subjectemission after tillage
dc.subjectethanol
dc.subjectgreenhouse gas
dc.subjectsoil carbon
dc.subjectCarbon dioxide emissions
dc.subjectControl treatments
dc.subjectConventional tillage
dc.subjectHarvesting system
dc.subjectSoil carbon
dc.subjectSugar plantation
dc.subjectAgricultural machinery
dc.subjectAgronomy
dc.subjectCarbon dioxide
dc.subjectEthanol
dc.subjectGlobal warming
dc.subjectGreenhouse gases
dc.subjectHarvesting
dc.subjectSoils
dc.subjectSoil pollution
dc.subjectbiomass burning
dc.subjectcarbon dioxide
dc.subjectcarbon footprint
dc.subjectconservation tillage
dc.subjectfield
dc.subjectharvesting
dc.subjectorganic carbon
dc.subjectOxisol
dc.subjectplant residue
dc.subjectplantation
dc.subjectsoil management
dc.subjectsugar cane
dc.subjectzero tillage
dc.titleCarbon dioxide emissions under different soil tillage systems in mechanically harvested sugarcane
dc.typeOtro


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