Abstract
Sugarcane is a very important economic crop that relies heavily on agricultural machinery, which contributes to soil compaction and a consequent decline in productivity. Subsoiling operation reduces the problems caused by compression; however, it is necessary to know its location and intensity. Accordingly, the aim of this work is to present a compression diagnostic method based on soil resistance to penetration as the parameter that indicates need for intervention in the subsoil. Measurements of penetration resistance was carried out in areas of sugarcane, located in the municipalities of Goianésia, Barro Alto and Santa Isabel, in the Brazilian state of Goiás. The Falker penetrometer (PLG 1020) was used, adjusted to a maximum depth of 40 cm and adopted as a critical resistance value of 4.0 MPa. The data were interpolated using kriging and adjusted in AutoCAD 2013 (Autodesk). The methodology proved effective in areas of compacted soil, and the surface layer had less resistance. The reduction in soil preparation was 96.54% and when considering the topographic adjustments, the reduction was 74.07%, showing the viability and importance of the diagnosis to show the proper management.
Highlights
Sugarcane is a very important economic crop that relies heavily on agricultural machinery, which contributes to soil compaction and a consequent decline in productivity
Because of its importance to the national economy, sugarcane production has expanded into almost all Brazilian states and biomes
The data was collected in the Brazilian State of Goiás, located in the Cerrado biome
Summary
Sugarcane is a very important economic crop that relies heavily on agricultural machinery, which contributes to soil compaction and a consequent decline in productivity. Measurements of penetration resistance was carried out in areas of sugarcane, located in the municipalities of Goianésia, Barro Alto and Santa Isabel, in the Brazilian state of Goiás. The Cerrado is considered to be the last agricultural frontier in the A mericas[8,9,10,11,12] Within this context, Goiás stands out as a state of central importance, due to the expansion of its planted area, as well as its increasing production and p roductivity[4,13]. In the municipality of Goianésia, for instance, sugarcane cultivation began in the late 1960s Nowadays, it is one of the region’s most important agro-industrial activities, and the local economy benefits through higher tax revenues and job c reation[14]. Soil compression increases resistance to the plant’s root development and decreases agricultural productivity[17]
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