Resistance of soil to penetration as a parameter indicator of subsolation in crop areas of sugar cane

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.

ROOT parameters of sugarcane and soil compaction indicators under deep strip tillage and conventional tillage

“…Because of socioeconomic, technical, and environmental requirements, the use of mechanized harvesting has become a necessity in Brazil. The increase in mechanized operations for sugarcane production is related to the elimination of the traditional practice of using fire to burn off leaves prior to sugarcane harvesting and has become more common in response to labor shortages 1 , 2 .…”

“…Barão de Itapura, Campinas, SP 1481 -13012-970, Brazil. 2 Department of Agronomy, State University of Mato Grosso Do Sul (UEMS), Rod 306 MS, 6.4 Km, Cassilândia, Mato Grosso Do Sul CEP: 79804-970, Brazil. 3 Department of Soils, Bento Gonçalves, Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, Rio Grande Do Sul 91501-970, Brazil.…”

Uso do penetrômetro eletrônico manual na avaliação da resistência do solo em sistemas de cultivo com plantas de cobertura

“…Mesmo em solos com teores adequados de nutrientes quando há compactação ocorre prejuízo na absorção de água pelas plantas e redução de oxigênio na rizosfera devido a diminuição dos espaços livres no solo, tendo como consequência a limitação dos processos metabólicos das plantas e a capacidade das raízes absorverem nutrientes (Arruda et al, 2021).…”