Original title:
Measurement of \kur{in situ}Phasporus Availability in Acidified Soils using Iron-Infused Resin soils.
Authors:
ČAPEK, Petr Document type: Rigorous theses
Year:
2016
Language:
eng Abstract:
A hybrid anion resin was tested for in situ phosphorus (P) availability measurement in soils of two stands recovering from acidification and having different P-sorption characteristics. The phosphate (P-PO4) sorption capacity of the resin (before saturation) was 48 mol g-1. Sorption and elution were tested under P-PO4 concentrations common in acidic soils (0 0.42 mmol l-1) either with or without the presence of sulfate (0.2 mmol l-1). The efficiency of P-PO4 sorption was independent of the sulfate and was 100 +/- 0.2% (n = 56, +/- SD). The P-PO4 recovery stabilized after six elution steps (each: 50 ml of 0.5 M sodium hydroxide, resin/solution 5:1). The efficiency of P-PO4 recovery was 80 +/- 7% and was used to evaluate field measurements. We determined the amount of P-PO4 in the field using resin bags in three consecutive years. The results indicate that bioavailable P is negatively related to the soil ability to retain P. Citation: ČAPEK, Petr. Measurement of \kur{in situ}Phasporus Availability in Acidified Soils using Iron-Infused Resin soils.. České Budějovice, 2016. rigorózní práce (RNDr.). JIHOČESKÁ UNIVERZITA V ČESKÝCH BUDĚJOVICÍCH. Přírodovědecká fakulta
Institution: University of South Bohemia in České Budějovice
(web)
Document availability information: Fulltext is available in the Digital Repository of University of South Bohemia. Original record: http://www.jcu.cz/vskp/48810