Chemical Forms of Phosphorus of Volcanic Ash-Derived Soils in Chile

Escudey, Mauricio; Galindo, Géraldine; Förster, Juan E.; Briceño, Margarita; Díaz, Patricia Verónica López; Chang, Andrew C.

doi:10.1081/css-100103895

Cited by 79 publications

(70 citation statements)

References 9 publications

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“…Organo-allophanic material was assumed to be at about 1-5 mass% in the Freire and <1 mass% in the Diguillín soils. All these data agree with the most expected general characteristics for volcanic Ultisols and Andisols 15,21 .…”

Section: Resultssupporting

confidence: 79%

“…This feature was also confirmed by the relatively strong attraction of the soil mass to a hand magnet. It also has relatively high clay content (52 mass%) 20 ; the mineralogy of which is dominated by halloysite and kaolinite aluminosilicates 15,21 . At room temperature Mössbauer spectra (Figure 1) for the clay fraction of the Collipulli soil (Ultisol) are rather complex, as is usually found for most soil clay materials, and generally consist of an intense central doublet, typically due to superparamagnetic iron (oxyhydr)oxides in very small particles and/or paramagnetic species such as structural iron in the phyllosilicates, along with a variable but usually incipient sextet contribution from magnetically ordered iron (oxyhydr)oxides.…”

Section: Resultsmentioning

confidence: 99%

“…Those results, along with powder X-ray diffraction (XRD) data 21 for the clay fractions, indicated that Andisols are characterized by high contents of poorly organized aluminosilicates and iron oxides. On the other hand, Ultisols, which are pedogenetically more developed than Andisols, have a mineralogy that is more typically characterized by crystalline compounds and higher iron oxides contents.…”

Section: Introductionmentioning

confidence: 97%

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Ammonium Oxalate and Citrate-Ascorbate as Selective Chemical Agents for the Mineralogical Analysis of Clay Fractions of an Ultisoland Andisols From Southern Chile

Pizarro¹,

Fabris²,

Stucki

et al. 2008

J. Chil. Chem. Soc.

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Two selective chemical treatments consisting of mixtures of (i) oxalic acid -ammonium oxalate at pH 3 (OX) and (ii) sodium citrate -ascorbic acid at pH 6 (CA) were used to selectively remove minerals from clay fractions of four volcanic soils: one from an Ultisol and three Andisols, of the southern Chile. Chemical analysis shows that CA is more effective in removing iron from Ultisol, and OX extracts it more efficiently from Andisols. 6 K 57 Fe-Mössbauer data indicate that OX tends to remove all magnetically ordered species with low hyperfine fields; CA has no clear effect on the removal of those or the identified iron oxides in these volcanic soil materials.

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Section: Resultssupporting

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Ammonium Oxalate and Citrate-Ascorbate as Selective Chemical Agents for the Mineralogical Analysis of Clay Fractions of an Ultisoland Andisols From Southern Chile

Pizarro¹,

Fabris²,

Stucki

et al. 2008

J. Chil. Chem. Soc.

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“…They are characterised by low nutrient availability, high phosphorus (P) fixation capacity, high organic matter (OM) content and a pH-dependent cation exchange capacity (Escudey et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Leaching Losses on a Volcanic Ash Soil as Affected by the Source of Fertiliser

Alfaro

et al. 2006

R.C. Suelo Nutr. Veg.

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Pérdidas de nitrógeno por lixiviación por efecto de la fuente del fertilizante en un suelo derivado de cenizas volcánicasKeywords: fish sludge, dairy slurry, inorganic fertilizer, water quality ABSTRACTAn intact lysimeters study was carried out to measure the potential nitrogen (N) losses on an andisoil of Southern Chile with different fertilisers. The treatments tested were: fish slurry (FS), dairy slurry (DS), potassium nitrate (IF) and a control treatment (C), with no N addition. An equivalent amount of 150 kg of total N ha -1 was applied to each lysimeter and then the equivalent to 1260 mm of rainfall was irrigated over a 90 days period. Leachate samples were analysed for nitrate, nitrite, ammonia and organic N (No). Total N losses were calculated as the product between drainage and the respective N concentration in the leachates. Lowest N losses were obtained in the control and FS treatments (66 kg N ha -1 ) and the greatest amount was obtained in the IF treatment (261 kg N ha -1 ). Nitrogen was mainly lost as nitrate and No (each was 49% of the total N losses). High soil organic matter of andisoils can be more relevant than fertiliser for N leaching losses. RESUMENUn experimento con lisímetros intactos se llevó a cabo para medir el potencial de pérdida de nitrógeno (N) en un andisol del sur de Chile con diferentes fertilizantes. Los tratamientos evaluados fueron purín de pescado (FS), purín de lechería (DS), nitrato de potasio (IF) y un tratamiento control (C), sin adición de N. Se aplicó una dosis equivalente a 150 kg ha -1 de N total a cada lisímetro y luego estos fueron regados con el equivalente a 1260 mm de lluvia distribuida en un periodo de 90 días. Las muestras de lixiviado fueron analizadas para nitrato, nitrito, amonio y N orgánico (No). Las pérdidas totales de N fueron calculadas como el producto del drenaje colectado y su respectiva concentración de N en la muestra. Las pérdidas más bajas de N se obtuvieron en el tratamiento control y en el tratamiento FS (66 kg N ha -1 ), y las pérdidas más altas se obtuvieron el tratamiento IF (261 kg N ha -1 ). El nitrógeno fue perdido principalmente como nitrato y como No (cada uno representó el 49% del total de las pérdidas). El alto contenido de materia orgánica de un andisol puede ser más relevante para las pérdidas de N por lixiviación que el tipo de fertilizante utilizado.

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“…Andisols are rich in OM and its accumulation is probably associated with mineralogy, dominated by low crystalline compounds [19] The pH of the residues has alkaline characteristics, with similar contents of CaO in D and G, which are lower than in commercial lime. Comparatively, D has a higher MgO content, i.e.…”

Section: Characterizationmentioning

confidence: 99%

CHEMICAL FRACTIONS OF Al IN VOLCANIC SOIL AMENDED WITH CELLULOSE WASTE

Borquez

Arellano

Artacho

et al. 2013

J. Chil. Chem. Soc.

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The cellulose industry generates a great volume of organic and inorganic waste, one of these wastes are called dreg (D) and grits (G). These residues have a high content of calcium carbonate, positioning them as potential bleachers in acid soils. Due to the important content of Al in the residues, a sequential extraction was done to establish the metal chemical fractions such as exchangeable, adsorbed, organic carbonated, and the ones associated to sulfurs, in incubated samples (2, 4, 8, and 32 days at 60ºC) of an Andisol amended soil with Grits, Dregs + Grits and lime in 1, 2 and 3 ton/ha doses. The results revealed that there was a significant increase in the amount of Al in all fractions, in comparison to the control soil. On the other hand the incorporation of these residues through a Dregs (70%) + Grits (30%) mixture provoked a pH increase, always higher than the commercial lime.Finally, the Al present on amended soils was mostly distributed in the residual and carbonated chemical fractions, which would constitute less labile chemical forms to the soil-solution.

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Chemical Forms of Phosphorus of Volcanic Ash-Derived Soils in Chile

Cited by 79 publications

References 9 publications

Ammonium Oxalate and Citrate-Ascorbate as Selective Chemical Agents for the Mineralogical Analysis of Clay Fractions of an Ultisoland Andisols From Southern Chile

Ammonium Oxalate and Citrate-Ascorbate as Selective Chemical Agents for the Mineralogical Analysis of Clay Fractions of an Ultisoland Andisols From Southern Chile

Nitrogen Leaching Losses on a Volcanic Ash Soil as Affected by the Source of Fertiliser

CHEMICAL FRACTIONS OF Al IN VOLCANIC SOIL AMENDED WITH CELLULOSE WASTE

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