Pressões de contato e o impacto de conjuntos motomecanizados em latossolo com presença e ausência de palhada de cana-de-açúcar

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dc.contributor.authorda Silva, Reginaldo Barboza [UNESP]
dc.contributor.authorIori, Piero [UNESP]
dc.contributor.authorde Souza, Zigomar Menezes
dc.contributor.authorPereira, Danilo de Moraes Gomes [UNESP]
dc.contributor.authorVischi Filho, Oswaldo Julio
dc.contributor.authorSilva, Francisca Alcivania de Melo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2018-12-11T16:42:55Z
dc.date.available2018-12-11T16:42:55Z
dc.date.issued2016-05-01
dc.description.abstractHigh contact pressures applied to soil result in a greater degree of compaction, in addition to promoting other negative effects. The objective of this study was to quantify contact areas by using different methodologies, and pressures of farm equipment employed in production activity and evaluate structural changes caused in a Red Latosol with the presence and absence of straw cover. The design was completely randomized in a factorial scheme of type 4 (tire on front axle, tire on rear axle, tire on a sugarcane wagon and metallic track of sugar cane Harvester) x 2 (presence and absence of straw). The contact area (CA) of the run was obtained by three procedures: analytical measure of the area of an ellipse (CA1); digital measurement of area of an ellipse (CA2); and measurement of real contact area (RCA), with digital resources. The contact pressure was calculated from the ratio of mass of each machine’s axle and the contact area of the run. The contact area obtained according to the procedure of the ellipse (CA1 and CA2) is overrated when compared to actual area obtained digitally (RCA). The straw reduces the contact pressure in the soil, due to the deep tire treads and consequently, increased contact area. Areas where the traffic of the machines occurred with soil covered with the presence of straw showed reduced soil resistance to penetration, cone index and pre-consolidation pressure, confirming that the increased contact area produced by straw reduced the pressure applied and the compression power dissipated in the soil.en
dc.description.affiliationUniversidade Estadual Paulista “Júlio de Mesquita Filho”/UNESP
dc.description.affiliationUniversidade Estadual de Campinas/UNICAMP Departamento de Água e Solo
dc.description.affiliationUnespUniversidade Estadual Paulista “Júlio de Mesquita Filho”/UNESP
dc.format.extent265-278
dc.identifierhttp://dx.doi.org/10.1590/1413-70542016403001716
dc.identifier.citationCiencia e Agrotecnologia, v. 40, n. 3, p. 265-278, 2016.
dc.identifier.doi10.1590/1413-70542016403001716
dc.identifier.fileS1413-70542016000300265.pdf
dc.identifier.issn1981-1829
dc.identifier.issn1413-7054
dc.identifier.scieloS1413-70542016000300265
dc.identifier.scopus2-s2.0-84976293872
dc.identifier.urihttp://hdl.handle.net/11449/168765
dc.language.isoeng
dc.relation.ispartofCiencia e Agrotecnologia
dc.relation.ispartofsjr0,383
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectFarming traction tire
dc.subjectFarming trailer tire
dc.subjectMetal track
dc.subjectWheel soil interaction
dc.titlePressões de contato e o impacto de conjuntos motomecanizados em latossolo com presença e ausência de palhada de cana-de-açúcarpt
dc.title.alternativeContact pressures and the impact of farm equipment on latosol with the presence and absence of sugarcane strawen
dc.typeArtigo

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