Least limiting water range and degree of compactness of soils under no- tillage

Authors

  • Claudia Liane Lima Universidade Federal de Pelotas
  • Luis Akiyoshi Suzuki Universidade Federal de Pelotas
  • Dalvan José Reinert Universidade Federal de Santa Maria
  • José Miguel Reichert Universidade Federal de Santa Maria

DOI:

https://doi.org/10.14393/BJ-v31n4a2015-26218

Keywords:

Soil quality, Bulk density, Soil strength, Porosity

Abstract

The least limiting water range (LLWR) and degree of compactness (DC) can be useful indicators of soil physical quality and crop yield. This study focused on assessing of LLWR, DC and evaluation of critical values to crop growth of an Alfisol and Oxisol under no-till management. Undisturbed soil cores were taken from the layer 0.00 - 0.20 m depth. Soil water retention curve, soil penetration resistance curve, air-filled porosity and bulk density (Bd) were measured. The range of LLWR variation was limited by volumetric water content at field capacity and penetration resistance. Values of LLWR varied from 0.00 - 0.14 m3 m-3 to Alfisol and 0.00 - 0.04 m3 m-3 to Oxisol. The critical values of the Bd and DC for crop development were 1.79 Mg m-3 and 1.35 Mg m-3 and 96% and 74% to Alfisol and Oxisol, respectively. Further researches relating LLWR, DC and crop response are still required in soils with different conditions and management.

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Author Biographies

Claudia Liane Lima, Universidade Federal de Pelotas

Departamento de Solos

Luis Akiyoshi Suzuki, Universidade Federal de Pelotas

Centro de Desenvolvimento Tecnológico (CDTec)

Dalvan José Reinert, Universidade Federal de Santa Maria

Departamento de Solos

José Miguel Reichert, Universidade Federal de Santa Maria

Departamento de Solos

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Published

2015-06-30

How to Cite

LIMA, C.L., SUZUKI, L.A., REINERT, D.J. and REICHERT, J.M., 2015. Least limiting water range and degree of compactness of soils under no- tillage . Bioscience Journal [online], vol. 31, no. 4. [Accessed16 May 2022]. DOI 10.14393/BJ-v31n4a2015-26218. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/26218.

Issue

Section

Agricultural Sciences