Influence of organic matter on phosphate adsorption by aluminium and iron oxides in sandy soils

Borggaard, Ole K.; Jdrgensen, S. S.; Moberg, J. P.; Raben‐Lange, B.

doi:10.1111/j.1365-2389.1990.tb00078.x

Cited by 233 publications

(118 citation statements)

References 21 publications

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“…In contrast, c-Al content was low (only 0-0.34 g kg −1 , 0-0.6 % of total Al) in the various aggregatesized fractions (Table 2). Similarly, a high amount of c-Fe and a low amount of c-Al were also found in sandy soils (Borggaard et al, 1990). This is probably because organic matter in soil inhibits Al oxides crystallization (Borggaard et al, 1990).…”

Section: Resultsmentioning

confidence: 94%

Speciation and distribution of P associated with Fe and Al oxides in aggregate-sized fraction of an arable soil

Jiang¹,

Bol²,

Willbold³

et al. 2015

Biogeosciences

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Abstract. To maximize crop productivity fertilizer P is generally applied to arable soils, a significant proportion of which becomes stabilized by mineral components and in part subsequently becomes unavailable to plants. However, little is known about the relative contributions of the different organic and inorganic P bound to Fe/Al oxides in the smaller soil particles. Alkaline (NaOH-Na 2 EDTA) extraction with solution 31 P-nuclear magnetic resonance ( 31 P-NMR) spectroscopy is considered a reliable method for extracting and quantifying organic P and (some) inorganic P. However, any so-called residual P after the alkaline extraction has remained unidentified. Therefore, in the present study, the amorphous (a) and crystalline (c) Fe/Al oxide minerals and related P in soil aggregate-sized fractions (> 20, 2-20, 0.45-2 and < 0.45 µm) were specifically extracted by oxalate (a-Fe/Al oxides) and dithionite-citrate-bicarbonate (DCB, both a-and c-Fe/Al oxides). These soil aggregate-sized fractions with and without the oxalate and DCB pre-treatments were then sequentially extracted by alkaline extraction prior to solution 31 P-NMR spectroscopy. This was done to quantify the P associated with a-and c-Fe/Al oxides in both alkaline extraction and the residual P of different soil aggregate-sized fractions.The results showed that overall P contents increased with decreasing size of the soil aggregate-sized fractions. However, the relative distribution and speciation of varying P forms were found to be independent of soil aggregate-size. The majority of alkaline-extractable P was in the a-Fe/Al oxide fraction (42-47 % of total P), most of which was orthophosphate (36-41 % of total P). Furthermore, still significant amounts of particularly monoester P were bound to these oxides. Intriguingly, however, Fe/Al oxides were not the main bonding sites for pyrophosphate. Residual P contained similar amounts of total P associated with both a-(11-15 % of total P) and c-Fe oxides (7-13 % of total P) in various aggregate-sized fractions, suggesting that it was likely occluded within the a-and c-Fe oxides in soil. This implies that, with the dissolution of Fe oxides, this P may be released and thus available for plants and microbial communities.

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Section: Resultsmentioning

confidence: 94%

Speciation and distribution of P associated with Fe and Al oxides in aggregate-sized fraction of an arable soil

Jiang¹,

Bol²,

Willbold³

et al. 2015

Biogeosciences

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“…Part of these organic ligands may be released by plants in the rhizosphere, particularly under Fe shortage, organic acids (Jones 1998) and phenolics, being the most represented. For instance, for soils where Fe oxides are responsible of phosphate fixation (Borggaard et al 1990;Colombo et al 1994;Hinsinger 2001), low-molecularweight organic acids can favor the availability of phosphate for plants through an exchange process of the anion adsorbed to Fe oxides (Liu et al 1999). An analogous process has been described for flavonoids and citrate released by roots of white lupin, which, solubilizing Fe from an insoluble Fe phosphate, favored indirectly the mobilization and the availability of phosphate (Shaw et al 2006;Tomasi et al 2008).…”

Section: Fe Complexation Processesmentioning

confidence: 99%

Review on iron availability in soil: interaction of Fe minerals, plants, and microbes

et al. 2013

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“…Crystallization of poorly crystalline Al oxides can be inhibited by organic matter to a larger extent than Fe oxides, resulting in poorly crystalline Al oxides adsorbing nearly twice as much P as Fe oxides (Borggaard et al 1990). The acid ammonium oxalate (OX) extraction method that extracts non-crystalline and poorly crystalline P, Al and Fe forms (Ross and Wang 1993) has been proposed to define the degree of phosphorus saturation (DPS) of soil sorption capacity by van der Zee et al (1987), but is not a routine soil test.…”

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confidence: 99%

Environmental Mehlich-III soil phosphorus saturation indices for Quebec acid to near neutral mineral soils varying in texture and genesis

Pellerin¹,

Parent

Fortin³

et al. 2006

Can. J. Soil. Sci.

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(Mehlich 1984) is a multinutrient agri-environmental routine soil-testing procedure used in many jurisdictions in North America, but one that is affected by soil texture. The P W determined by the Sissingh (1971) method is an index of surface water contamination and desorbed P that is not influenced by soil texture and that can be used to define specific M-III critical environmental indices by soil texture group. Our objective was to define critical environmental indices by relating (P/Al) M-III to P W . We analyzed 275 soil samples from surface, and 175 from subsurface layers, varying in genesis, texture, and pH. The relationship between P W and (P/Al) M-III was influenced by soil properties, particularly soil texture and genesis. Fine-textured (> 300 g clay kg -1 ) and gleyed soils tended to release more P W at a given (P/Al) M-III compared with coarse-textured (≤ 300 g clay kg -1 ) and podzolized soils. Using a critical value of 9.7 mg P W L -1 derived from the literature, critical environmental (P/Al) M-III ratios were found to be 0.131 for coarse-, and 0.076 for fine-textured soils. Subsurface P W increased significantly with (P/Al) M-III above 0.131 in the plough layer of coarse-textured soils, but was independent of (P/Al) M-III in fine-textured soils, indicating contrasting mechanisms of P accumulation in subsurface layers (matrix vs. preferential flow). After accounting for soil texture, (P/Al) M-III appeared to be a useful index of P accumulation in Quebec mineral soils. est largement utilisée en Amérique du Nord, mais est sensible à la texture du sol. Le P W (Sissingh 1971), un indice de la désorption du P et de contamination des eaux de surface, n'est pas affecté par la texture et permettrait donc de définir des valeurs critiques environnementales M-III spécifiques à la texture. Notre objectif était de définir ces valeurs critiques (P/Al) M-III en lien avec le P W . Nous avons analysé 275 échantillons de sol de surface et 175 dans la couche sous-jacente. La relation P W -(P/Al) M-III dépendait des propriétés du sol comme la texture et la genèse. Pour un même rapport (P/Al) M-III , les sols de texture fine (> 300 g d'argile kg -1 ) et gléifiés tendaient à libérer plus de P W que les sols à texture grossière (≤ 300 g d'argile kg -1 ) et podzolisés. Utilisant une valeur critique de 9,7 mg P W L -1 tirée de la littérature, les rapports (P/Al) M-III critiques étaient de 0,131 pour les sols de texture grossière et 0,076 pour ceux de texture fine. La valeur P W dans les couches sous-jacentes augmentait significativement dans les sols de surface de texture grossière avec (P/Al) M-III > 0,131, mais était indépendante de (P/Al) M-III dans les sols de texture fine, 7113 This paper is part of a Ph.D. thesis. 4 To whom correspondence should be addressed (e-mail: leon-etienne.parent@sga.ulaval.ca).Abbreviations: ␣ m , maximum saturation factor for total sorption; ␤ m , maximum saturation factor for reversible adsorption; b, Langmuir phosphorus adsorption maximum; DPS, degree of phosphate saturation; ICP, induct...

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Influence of organic matter on phosphate adsorption by aluminium and iron oxides in sandy soils

Cited by 233 publications

References 21 publications

Speciation and distribution of P associated with Fe and Al oxides in aggregate-sized fraction of an arable soil

Speciation and distribution of P associated with Fe and Al oxides in aggregate-sized fraction of an arable soil

Review on iron availability in soil: interaction of Fe minerals, plants, and microbes

Environmental Mehlich-III soil phosphorus saturation indices for Quebec acid to near neutral mineral soils varying in texture and genesis

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