Evaluation of the electro‐ultrafiltration technique (EUF) to determine available P in neutral and calcareous soils

Tran, T. Sen; Simard, R. R.; Tabi, M.

doi:10.1080/00103629209368738

Cited by 7 publications

(8 citation statements)

References 15 publications

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“…Phosphorus extracted by Mehlich 3, the currently recommended method in the province of Quebec, was significantly related to each fraction desorbed by EUF (0.52 < r < 0.76). The closer relationship between P extracted by Mehlich 3 and P desorbed by EUF in the present study than in the study of Tran et al (1992a) may be related to the smaller number of soils investigated (4 vs. 28) and to less variability in pedogenesis (Beauchemin and Simard 1999).…”

Section: Relationship Between P Evaluated By Desorption Techniques Ancontrasting

confidence: 49%

“…This relationship was slightly improved (r = 0.53) when we considered only the three acidic soils (Laverlochere site was left out, data not shown). It was previously reported that EUF was not an adequate method to predict plant-available P for soils containing sparingly soluble Ca-phosphates under greenhouse conditions (Tran et al 1992a). The soils from the present study are rich in Ca.…”

Section: Relationship Between Different Phosphorus Availability Indicmentioning

confidence: 61%

“…Nemeth (1982) and Tran et al (1992a) reported that in neutral and calcareous soils in which apatite and/or tricalcium phosphate are present, the capacity of EUF to continuously remove Ca 2+ ions from the extraction solution greatly increases the amount of P desorbed. A significant correlation (r = 0.72***) between P 400 and rapidly exchangeable Ca 2+ was obtained in the present study (data not shown).…”

Section: Relationship Between P Evaluated By Desorption Techniques Anmentioning

confidence: 99%

“…Simard and Tran (1993) found that EUF-extractable P and 0.5 M NaHCO 3 -soluble P are closely correlated to P uptake by oat (Avena sativa L.) and corn (Zea mays L.). In North America, the use of the EUF technique is still limited (Tran et al 1992a;Simard and Tran 1993). These studies have been conducted under controlled conditions and no results were reported from field studies.…”

Section: Mots Clésmentioning

confidence: 99%

“…Many chemical methods have been used to evaluate the plantavailability and the potential reserves of soil P in the province of Quebec, Canada. Phosphorus extracted by these methods is significantly correlated to plant growth and P uptake under controlled conditions (Simard et al 1991;Tran et al 1992a). The degree of success of these methods in predicting the amount of fertiliser P needed to reach optima crop yields in field situations is, however, often limited.…”

Section: Mots Clésmentioning

confidence: 99%

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Soil-available phosphorus as evaluated by desorption techniques and chemical extractions

Ziadi¹,

Simard²,

Tran³

et al. 2001

Can. J. Soil. Sci.

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. Soil-available phosphorus as evaluated by desorption techniques and chemical extractions. Can. J. Soil Sci. 81: 167-174. The P-supplying power of the fine-textured soils from Abitibi-Temiscaming (Quebec, Canada) has never been investigated. Anion exchange membranes (AEM), the electro-ultrafiltration (EUF) technique and chemical extractions were used to describe their P status. Phosphorus was desorbed from four soils that had received 52.4 kg P ha -1 yr -1 from 1994 to 1996 and from unfertilized soils. The cumulative amount of P desorbed in 75 min by EUF from unfertilized soils varied from 10 to 69 mg P kg -1 . Averaged over all sites and treatments, the amount of soil P extracted by different methods ranged from 1.0 to 18.9 mg P kg -1 . The cumulative grass P uptake was significantly related to P desorbed by all methods (0.39 < r < 0.84). A close relationship between grass P uptake and P AEMs indicated the adequacy of the AEMs to determine plant-available P in Abitibi-Temiscaming soils. A high degree of linearity (0.97 < R 2 < 0.99) of the EUF-P desorption curves at 200 V and 20°C with time was obtained. This indicates that soils have a high capacity to buffer removal of P from soil solution with reserve P. The EUF technique has shown that these soils hold very large inorganic P reserves and this may explain the lack of grass response to P fertilizers.Key words: Anion exchange membranes, grass-P uptake, P-desorption, Mehlich3-P, Olsen-P.Ziadi, N., Simard, R. R., Tran, T. S. et Allard, G. 2001. Evaluation de la disponibilité du phosphore du sol par des techniques de désorption et des extractifs chimiques. Can. J. Soil Sci. 81: 167-174. La capacité de sols à texture fine de l'Abitibi-Témiscamingue (Québec, Canada) à fournir le P n'a jamais été documentée. Les techniques des membranes d'échange anionique (AEMs), d'Électro-ultrafiltration (EUF) et certaines extractions chimiques ont été utilisées à cette fin. Le P désorbé a été caractérisé dans quatre sols ayant reçu 52,4 kg Pha -1 an -1 de 1994 à 1996 et quatre témoins. La quantité cumulative de P désor-bé des témoins non fertilisés par EUF durant 75 min a varié entre 10 et 69 mg P kg -1 . Les teneurs moyennes du sol en P extrait par les différentes méthodes varie de 1,0 à 18,9 mg P kg -1 . Le prélèvement cumulatif du P par les fourrages était significativement relié ( 0,39 < r < 0,84) aux quantités de P du sol désorbé par toutes les méthodes. La relation étroite entre le prélèvement du P et le P extrait par les membranes d'échange anionique indique l'efficacité de cette méthode à quantifier la disponibilité du P pour les fourrages produits sur les sols à texture fine de l'Abitibi-Témiscamingue. Des degrés de linéarité élevés (0,97 < R 2 < 0,99) entre le P désorbé à 200 V et 20°C par EUF et le temps de désorption ont été obtenus. Ces résultats indiquent que les sols étudiés ont une forte capacité à solubiliser le P à partir de leur réserve. La technique EUF a révélé que ces sols renferment de très grandes réserves de P inorganique et que cela peut expliquer le ma...

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Section: Relationship Between P Evaluated By Desorption Techniques Ancontrasting

confidence: 49%

Section: Relationship Between Different Phosphorus Availability Indicmentioning

confidence: 61%

Section: Relationship Between P Evaluated By Desorption Techniques Anmentioning

confidence: 99%

Section: Mots Clésmentioning

confidence: 99%

Section: Mots Clésmentioning

confidence: 99%

See 3 more Smart Citations

Soil-available phosphorus as evaluated by desorption techniques and chemical extractions

Ziadi¹,

Simard²,

Tran³

et al. 2001

Can. J. Soil. Sci.

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New diagnostic techniques, universal soil extractants

Raij¹

1994

Communications in Soil Science and Plant Analysis

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Bioavailable tests: alternatives to standard soil extractions

Raij¹

1998

Communications in Soil Science and Plant Analysis

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Due to the complexity of the soil plant system and in spite of the enormous amount of information available, the search for better methods to determine the bioavailability of nutrients to plants continues to be important. The large number of methods of soil analysis available worldwide in routine soil testing is an unquestionable demonstration of the lack of agreement on best alternatives. The question discussed in this paper, based on a literature review, is if those methods, considered here as the "standard methods" of soil analysis, are the best possible alternatives for the evaluation of bioavailability of elements in soil. As alternative non-standard methods, electroultrafiltration (EUF), the extraction with 0.01 mol calcium chloride (CaCl 2 L -1 solution, the extraction with ion-exchange resin and the adsorption of phosphorus (P) on iron oxide treated paper filter (Pi), were considered. These four methods were compared with the standard methods Olsen, Mehlich 1, Bray 1, Mehlich 3, AB-DTPA, Egnér, water, ammonium acetate (NH 4

show abstract

Evaluation of the electro‐ultrafiltration technique (EUF) to determine available P in neutral and calcareous soils

Cited by 7 publications

References 15 publications

Soil-available phosphorus as evaluated by desorption techniques and chemical extractions

Soil-available phosphorus as evaluated by desorption techniques and chemical extractions

New diagnostic techniques, universal soil extractants

Bioavailable tests: alternatives to standard soil extractions

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