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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Soil compaction on traffic lane due to soil tillage and sugarcane mechanical harvesting operations

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Guimaraes Junnyor, Wellingthon da Silva [1] ; De Maria, Isabella Clerici [1] ; Araujo-Junior, Cezar Francisco ; de Lima, Camila Cassante [2, 3] ; Vitti, Andre Cesar [4] ; Figueiredo, Getulio Coutinho [5] ; Falci Dechen, Sonia Carmela [1]
Total Authors: 7
[1] Ctr Solos & Recursos Ambientais, Inst Agron Campinas, Ave Barao Itapura 1481, BR-13012970 Campinas, SP - Brazil
[2] Inst Agron Parana ASO, Rod Celso Garcia Cid, Km 375, Londrina, PR 86047 - USA
[3] Univ Sao Paulo ESALQ, Dept Ciencia Solo, Ave Padua Dias, 11, 13418900 Piracicaba, SP - Brazil
[4] Agencia Paulista Tecnol Agronegocios, Polo Reg Ctr, Rod SP 127, Km 30, BR-13400970 Piracicaba, SP - Brazil
[5] Univ Fed Rio Grande Sul FA, Dept Solos, Ave Bento Goncalves, 7712, BR-91501970 Porto Alegre, RS - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Scientia Agricola; v. 76, n. 6, p. 509-517, NOV-DEC 2019.
Web of Science Citations: 1

ABSTRACT: Mechanical sugarcane harvesting increases soil compaction due to the intense traffic of agricultural machinery, reducing longevity of sugarcane crops. In order to mitigate the harmful effects caused by agricultural traffic on the soil structure in sugarcane fields, this study evaluated impacts of mechanical sugarcane harvesting on traffic lane under two soil tillage systems based on load bearing capacity models. The experiment was carried out in the region of Piracicaba, state of São Paulo, Brazil, on a Rhodic Nitisol, under conventional tillage (CT) and deep strip-tillage (DST). For CT soil tillage was applied to the entire area with a heavy disk harrow, at operating depths from 0.20 to 0.30 m followed by a leveling harrow at a depth of 0.15 m. For DST, soil tillage was performed in part of the area at a depth of 0.80 m, forming strip beds for sugarcane planting, while the traffic lanes were not disturbed. Undisturbed soil samples from traffic lanes were used in the uniaxial compression test to quantify preconsolidation pressure and to model the soil load bearing capacity. The surface layer (0.00-0.10 m) was most susceptible to compaction, regardless of the tillage system (CT or DST) used. In the DST, the traffic lane maintained the previous soil stress history and presented higher load bearing capacity (LBC) than the traffic lane in the CT. As in CT the soil was tilled, the stress history was discontinued. This larger LBC in DTS minimized the impacts of the sugarcane harvest. Under CT, additional soil compaction due to mechanical sugarcane harvesting in the traffic lane was observed after the second sugarcane harvest. There was a reduction in load bearing capacity from 165 kPa to 68 kPa under CT and from 230 kPa to 108 kPa under DST, from the first to the second harvest at surface layer. Water content at mechanical harvesting was the most relevant factor to maximize impacts on the soil structure in traffic lanes, for both tillage systems. (AU)

FAPESP's process: 13/10427-1 - Sugarcane root development and physical, chemical and biological soil attributes as affected by soil tillage systems
Grantee:Sonia Carmela Falci Dechen
Support Opportunities: Regular Research Grants
FAPESP's process: 14/07434-9 - Compressive behavior and evaluation of soils physical properties under sugarcane cultivation
Grantee:Wellingthon da Silva Guimarães Júnnyor
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 13/21687-4 - Sugarcane root development and physical, chemical and biological soil attributes as affected by soil tillage systems.
Grantee:Getulio Coutinho Figueiredo
Support Opportunities: Scholarships in Brazil - Post-Doctoral