Comparison between the laboratory method and the Stolf penetrometer in soil density analysis

a study using geostatistical approaches

Authors

Keywords:

Soil density, Soil sampling, Geostatistics, Ordinary Kriging, Stolf's penetrometer

Abstract

The aim of this study was to assess the accuracy of soil density estimated by the Stolf impact penetrometer using geostatistical methods and taking laboratory density as a reference. Additionally, the research included a description of soil sampling methods, soil density determination, and basic geostatistical concepts. For this research, 78 soil samples and an equal number of impact measurements were collected in a coffee plantation in Minas Gerais, Lavras, Brazil. Based on these data, exponential models were fitted, and soil density was mapped using ordinary kriging. The results revealed that the Stolf penetrometer tends to overestimate soil density, although it still exhibits a strong positive correlation (79.3\%) with laboratory measurements. Therefore, it was concluded that in situations where precision is not imperative, this cost-effective approach is a viable option for soil density analysis in soil research.

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Published

15-03-2024

How to Cite

Nhancololo, A. M., Oliveira , W. A., Pereira , F. A. C., Silva , B. M., & Scalon , J. D. (2024). Comparison between the laboratory method and the Stolf penetrometer in soil density analysis : a study using geostatistical approaches. Sigmae, 13(1), 63–78. Retrieved from https://publicacoes.unifal-mg.edu.br/revistas/index.php/sigmae/article/view/2335