MAGNETIC SUSCEPTIBILITY AS INDICATOR OF SOIL QUALITY IN SUGARCANE FIELDS

Authors

  • Mariana dos Reis Barrios Department of Soils and Fertilizers, Universidade Estadual Paulista, Jaboticabal, SP
  • José Marques Júnior Department of Soils and Fertilizers, Universidade Estadual Paulista, Jaboticabal, SP
  • Sammy Sidney Rocha Matias Department of Agronomy, Universidade Estadual do Piauí, Corrente, PI
  • Alan Rodrigo Panosso Department of Mathematics, Universidade Estadual Paulista, Ilha Solteira, SP
  • Diego Silva Siqueira Department of Soils and Fertilizers, Universidade Estadual Paulista, Jaboticabal, SP
  • Newton Scala Junior Department of Exact Sciences, Universidade Estadual Paulista, Jaboticabal, SP

DOI:

https://doi.org/10.1590/1983-21252017v30n203rc

Keywords:

Magnetic signature. Applied Geophysics. Neo-formation. Multivariate Statistics.

Abstract

Sugarcane management practices (unburned cane - UC and burned cane – BC) interfere with dynamics of soil magnetic properties. This study focused on determining the potential of magnetic susceptibility as soil quality indicator in areas under sugarcane cultivation. The experiment area is on the limit between basalt from São Bento Group, Serra Geral Formation, and sandstone from Bauru Group – Adamantina Formation. Twenty soil samples were collected from two management areas (burned and unburned sugarcane prior to harvest) at a depth range of 0.0-0.2 m. Local soil was classified as eutroferric Red Latosol (Oxisol), with highly clayey texture. Chemical and physical properties, CO2 emissions and magnetic susceptibility (MS) in air-dried fine earth (MSADFE), total sand fraction (MSTS) and clay fraction (MSCF). The magnetic signature from MS was effective in identifying changes of physical, chemical and mineralogical traits in Latosols under burned and unburned sugarcane crop. The information provided here can guide further studies on the genesis of minerals with magnetic expression in environments and exposed to fire burning.

Author Biographies

  • Mariana dos Reis Barrios, Department of Soils and Fertilizers, Universidade Estadual Paulista, Jaboticabal, SP
    Departamento de Solo
  • José Marques Júnior, Department of Soils and Fertilizers, Universidade Estadual Paulista, Jaboticabal, SP
    Departamento de Solo
  • Sammy Sidney Rocha Matias, Department of Agronomy, Universidade Estadual do Piauí, Corrente, PI
    Departamento de Agronomia
  • Alan Rodrigo Panosso, Department of Mathematics, Universidade Estadual Paulista, Ilha Solteira, SP
    Departamento de Exatas
  • Diego Silva Siqueira, Department of Soils and Fertilizers, Universidade Estadual Paulista, Jaboticabal, SP
    Departamento de Solo
  • Newton Scala Junior, Department of Exact Sciences, Universidade Estadual Paulista, Jaboticabal, SP
    Departamento de Exatas

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Published

24-01-2017

Issue

Section

Agronomy