Study of phosphate species of chernozem and sand soils by heterogeneous isotope exchange with 32P radioactive tracer

Nagy, Noémi M.; Buzetzky, Dóra; Kovács, Erika; Kovács, Attila; Kátai, János; Vágó, Imre; Kónya, József

doi:10.1016/j.apradiso.2019.06.038

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…This decrease was much higher on Chernozem: at 13 weeks of incubation, the P W values decreased by half to a third compared to the P W values at 1 and 3 incubation periods. At the same time, the P tightly values increased (Figure 2G, 2H), suggesting the transformation of isotopically exchangeable/weakly sorbed phosphate to tightly sorbed phosphate species (Nagy et al 2019). On Arenosol, the P W values much less decreased with increasing incubation period than on Chernozem.…”

Section: Resultsmentioning

confidence: 86%

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Characterisation of soil phosphorus forms in the soil-plant system using radioisotopic tracer method

Kovács¹,

Kremper²,

Kátai³

et al. 2021

Plant Soil Environ.

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Soil incubation and pot experiments were conducted to follow the sorption processes of added phosphorus (P) fertiliser using the radioisotope tracer technique. Increasing doses of P fertiliser (40, 80, 160, 320 mg P/kg soil) were added to Chernozem and Arenosol and incubated for 1, 3, and 13 weeks. After incubation, perennial ryegrass (Lolium perenne L.) was sown in one group of pots, and the experiment had been continuing for another 9 weeks. The yield, grass P uptake, isotopically exchangeable (PIE), water-soluble (PW), and ammonium lactate soluble phosphorus (PAL) fractions of soils were measured. On Chernozem, plant P uptake, PIE, PW and PAL were significantly less in the case of the longest incubation period compared to shorter incubations. This suggests a transformation of P into tightly sorbed form. On Arenosol, there were only small changes in the parameters as the incubation period increased, suggesting less intense P transformation to tightly sorbed form. The PW/PIE ratio enhanced with increasing P-doses, and the ratios were higher on Arenosol. On Arenosol, the higher P doses caused a greater increase of PW than on Chernozem. The PIE + PW showed a good correlation with plant P uptake proving this value can be a good indicator of plant-available phosphorus.

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Section: Resultsmentioning

confidence: 86%

“…Furthermore, we examined the effect of P doses and incubation periods. The quantity of weakly sorbed P as well as the exchange rate between the soil and soil solution were also described (Nagy et al 2018(Nagy et al , 2019.…”

mentioning

confidence: 99%

Characterisation of soil phosphorus forms in the soil-plant system using radioisotopic tracer method

Kovács¹,

Kremper²,

Kátai³

et al. 2021

Plant Soil Environ.

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“…Both isotopes are also naturally produced in the atmosphere through interaction of cosmic radiation with argon nuclei [17,18], but their applications as the environmental tracers are limited to studies of atmospheric and oceanic mixing. Artificially produced 32 P and 33 P are used at field-and laboratory-scale to trace and quantify phosphorus uptake, speciation and transport in ecosystems and soils [19][20][21]. Applications related to the aquatic environment were initially concerned with the pathways of phosphorus uptake by biota in lakes [22,23] and rivers [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Transport in a Lowland Stream Derived from a Tracer Test with 32P

Zięba

Wachniew

2021

Water

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Small streams in urbanized rural areas receive loads of P from various, often episodic, sources. This paper addresses, through a tracer test with 32P, retention and transport of a pulse input of phosphorus in a 2.6 km long stretch of a channelized second-order lowland stream. Tritiated water was introduced alongside the 32P-labelled ortophosphate in order to isolate the influence of the hydrodynamic factors on P behavior. Tracer concentrations in unfiltered water samples were measured by liquid scintillation counting. Four in-stream and five hyporheic breakthrough curves were collected at four points along the stream, two of which encompass a beaver dam impoundment. The overall retention efficiency of 32P along the studied reach was 46%. The transient storage transport model OTIS-P provided reasonable fits for in-stream breakthrough curves (BTCs) but failed at reproducing the hyporheic BTCs. The overall small effect of transient storage on solute transport was higher in the stretch with a more pronounced surface storage. Transient storage and phosphorus retention were not enhanced in the beaver dam impoundment.

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Testing a biexponential kinetic model for the heterogeneous isotopic exchange of phosphate ions on several types of soil

Vörös,

Kónya,

Nagy

2025

Applied Radiation and Isotopes

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Study of phosphate species of chernozem and sand soils by heterogeneous isotope exchange with 32P radioactive tracer

Cited by 4 publications

References 24 publications

Characterisation of soil phosphorus forms in the soil-plant system using radioisotopic tracer method

Characterisation of soil phosphorus forms in the soil-plant system using radioisotopic tracer method

Phosphorus Transport in a Lowland Stream Derived from a Tracer Test with 32P

Testing a biexponential kinetic model for the heterogeneous isotopic exchange of phosphate ions on several types of soil

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