Attributes of pedoindicator soils in areas cultivated with typical crops in the Western Amazon, Brazil


  • Half Weinberg Corrêa Jordão Universidade Federal do Amazonas
  • Milton César Costa Campos Universidade Federal do Amazonas
  • Bruno Campos Mantovanelli Universidade Federal de Santa Maria
  • José César Frozzi Universidade Federal do Amazonas
  • José Maurício da Cunha Universidade Federal do Amazonas
  • Leonardo Chechi Universidade Federal de Santa Maria
  • Julimar da Silva Fonseca Universidade Federal do Amazonas



Chemical attributes, Multivariate techniques, Native forest, Soil attributes.


The crop systems adopted in the Amazônia region have been studied several times in terms of the variability and to indicate the soil attributes more sensitive to the different crops. Thus, the objective of this work was to apply multivariate techniques in order to identify the chemical attributes most sensitive to environmental changes in different crop systems in Western Amazonia, Brazil. The research was conducted in five rural properties located in the Humaitá city region, Western Amazonia, Brazil. There were selected four environments with natural characteristics (Native Forest - NF) and five cropping systems (Grazing, Cassava, Açaí, Agroforestry and Reforestation). In the selected areas, soil samples were collected at depths layers of 0.0-0.05 m; 0.05-0.1 m and 0.1-0.2 m and the following chemical analyzes were performed: pH in water, Ca2+, Mg2+, K +, Resin-P, phosphorus bio-available particulate (Pbp), OC, Al3+, H++Al3+ and from these results SB, T, t, m% and V% were calculated. Multivariate statistical techniques were used to verify similarities between the crop systems in the attempt to relate the crops grown and the chemical attributes. The multivariate analysis was essential in the crop systems distinction, as well as to describe the relationship with the chemical properties. The results demonstrate and reinforce the existing variability between crop systems, with emphasis on the variation in crop systems, compared to natural environments.


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How to Cite

JORDÃO, H.W.C.., CAMPOS, M.C.C.., MANTOVANELLI, B.C.., FROZZI, J.C., CUNHA, J.M. da, CHECHI, L. and FONSECA, J. da S.., 2020. Attributes of pedoindicator soils in areas cultivated with typical crops in the Western Amazon, Brazil. Bioscience Journal [online], vol. 36, pp. 97–108. [Accessed23 May 2024]. DOI 10.14393/BJ-v36n0a2020-53609. Available from: