Evaluation of soil compaction by modeling field vehicle traffic with SoilFlex during sugarcane harvest

► Different soil scenarios were modeled to compare vehicles impacts on soil compaction. ► Soil stress, bulk density and pre-consolidation stress were compared for each vehicle. ► Traditional road tyres in haulout trucks and trailers transmitted higher stresses to the soil. ► Higher tyre inflation pr...

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Bibliographic Details
Published in:	Soil & tillage research Vol. 129; pp. 61 - 68
Main Authors:	Lozano, N., Rolim, M.M., Oliveira, V.S., Tavares, U.E., Pedrosa, E.M.R.
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 01-05-2013 Elsevier
Subjects:	Agronomy. Soil science and plant productions Biological and medical sciences Bulk density Fundamental and applied biological sciences. Psychology Soil compression Soil science Trucks Tyres Bulk density Trucks Tyres Soil compression Saccharum Compressible soil Monocotyledones Traffic Compaction Modeling Sugar plant Tyre Gramineae Angiospermae Spermatophyta Sugar cane Soil science
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Summary:	► Different soil scenarios were modeled to compare vehicles impacts on soil compaction. ► Soil stress, bulk density and pre-consolidation stress were compared for each vehicle. ► Traditional road tyres in haulout trucks and trailers transmitted higher stresses to the soil. ► Higher tyre inflation pressures correspond to higher contact stress. Sugarcane harvest in Brazil involves infield traffic of trailers, haulout trucks and tractors, increasing the risk of soil compaction. Pseudo-analytic models have been used for analyzing soil compaction due to traffic as well as a tool to prevent it. The objective of this paper was to analyze the compaction process of an Ultisols in the costal table of Pernambuco, Brazil, subjected to vehicle traffic during sugarcane harvest. The pseudo-analytical model SoilFlex was used for modeling bulk density and soil moisture scenarios based on undisturbed soil samples taken at 0–0.1, 0.1–0.2, 0.2–0.3 and 0.3–0.4m depth in a 120m×120m area. Five bulk density scenarios, each one with four soil moisture conditions, were evaluated after passing vehicles during harvest: a loaded haulout truck, a loaded trailer hauled by a tractor and a loaded haulout truck hauling a loaded trailer. Soil vertical and pre-compression stresses showed that the haulout truck, as well as the trailer hauled by tractor, cause soil compaction beyond 0.2m depth when the initial bulk density were 1.3, 1.4 and 1.5gcm−3.
ISSN:	0167-1987 1879-3444
DOI:	10.1016/j.still.2013.01.010