Evaluation of the Least Limiting Water Range for a Typic Argiudoll under Different Intensities of Agricultural Use

Authors

  • Valentina Rubio Dellepiane Instituto Nacional de Investigación Agropecuaria.
  • Diana Gama Roldán Instituto Nacional de Investigación Agropecuaria.
  • Mario Pérez Bidegain Universidad de la República, Facultad de Agronomía.
  • Andrés Quincke Instituto Nacional de Investigación Agropecuaria.

DOI:

https://doi.org/10.31285/AGRO.22.1.11

Keywords:

indicator of soil physical quality, soil compaction, least limiting water range, pasture-crop rotations

Abstract

The least limiting water range (LLWR) has been proposed as an indicator of physical soil quality that integrates aeration, penetration resistance, and soil water content effects on plant growth in a single parameter. The objective of this study was to evaluate the LLWR along with other soil physical properties under different rotation and fertilization treatments. The research was conducted on a typic Argiudoll, in Colonia, Uruguay, in a long-term crop-pasture rotation experiment started in 1963. The treatments evaluated were: a) continuous agriculture without fertilization (ACs / Fert), b) fertilized continuous agriculture (AC), c) crop-pasture rotations with 50 % of the time under crops (50 % Cult), and d) crop-pasture rotations with 33 % of time under crops (33 % Cult). The LLWR decreased with increasing cropping intensities, ranging between 0,08 and 0,02 cm3 cm-3 for treatments 33 % Cult and ACs / Fert, respectively. Thus, the LLWR allowed assessing a decline in soil physical quality. The analysis of the limits of the LLWR allowed understanding the possible physical restrictions that would be affecting plant growth, showing that aeration and resistance to penetration become increasingly limiting with higher cropping intensities.

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Published

2018-12-11

How to Cite

1.
Rubio Dellepiane V, Gama Roldán D, Pérez Bidegain M, Quincke A. Evaluation of the Least Limiting Water Range for a Typic Argiudoll under Different Intensities of Agricultural Use. Agrocienc Urug [Internet]. 2018 Dec. 11 [cited 2024 May 25];22(1):107-15. Available from: https://agrocienciauruguay.uy/index.php/agrociencia/article/view/38

Issue

Section

Natural and environmental resources
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