Sorption Index to Estimate Phosphorus Retention Capacity in Soils

Authors

  • Nélida N. Pose Unidad Integrada INTA-FCA UNMdP. CC 276, B7620EMA. Balcarce, Argentina
  • Ester C. Zamuner Unidad Integrada INTA-FCA UNMdP. CC 276, B7620EMA. Balcarce, Argentina

DOI:

https://doi.org/10.31285/AGRO.20.2.12

Keywords:

retention, environmental risk, phosphorus parameters

Abstract

Agricultural and livestock production systems, with significant amounts of input of phosphorus (P) to the soil, can cause losses of P to surface waters. Research in recent years has been focused on the mechanisms of P retention in different soil types, and searched indexes or parameters associated with fertilization requirements and environmental pollution. Traditionally, P reten-tion parameters have been studied by adsorption isotherms and buffer capacity estimation. Since the technique employed is complex and time consuming for routine analysis, in recent research P Sorption Index (PSI) is proposed as an alternative. This work carried out a literature review, and analyzed and discussed the techniques and calculations used by different researchers to quantify the PSI. The literature shows differences in the methodology for performing the single-point index (soil: solution ratio, amount of P added, temperature and time at the equilibrium, etc.), and in the equation to calculate the PSI. These differences have failed to standardize the methodology, making it difficult to compare results.

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Published

2016-12-01

How to Cite

1.
Pose NN, Zamuner EC. Sorption Index to Estimate Phosphorus Retention Capacity in Soils. Agrocienc Urug [Internet]. 2016 Dec. 1 [cited 2023 Feb. 5];20(2):86-94. Available from: https://agrocienciauruguay.uy/index.php/agrociencia/article/view/200

Issue

Section

Soil and Water