Phosphorus sorption maxima and desorbability in selected soils with andic properties from the Azores, Portugal

Auxtero, E.; Madeira, Manuel; Sousa, Elias Fernandes de

doi:10.1016/j.geoderma.2008.01.008

Cited by 20 publications

(16 citation statements)

References 35 publications

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“…Fe through ligand exchange,, subsequently lowering the amount labile P as characterized by both extractable P and P in soil solution (Auxtero et al, 2008). In the Se, the impact of struvite was intermediate between the other two soils, Se had a a P sorption maximum of 344 mg kg…”

Section: Discussionmentioning

confidence: 99%

Possible use of struvite as an alternative phosphate fertilizer

Nongqwenga

Muchaonyerwa

Hughes

et al. 2017

J. Soil Sci. Plant Nutr.

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Struvite, from human urine, is an alternative phosphorus (P) fertilizer. This study evaluated P release from struvite and its effectiveness for maize in Inanda (Ia), Sepane (Se) and Cartref (Cf) soils. Phosphorus sorption isotherms were determined, an incubation study determined the release pattern of P from struvite, and a pot trial compared struvite with single superphosphate (SSP) on maize P uptake. The amount of P at equilibrium (where Q = 0) in the Cf was 1.39 mg L , respectively. The extractable P in all three soils increased with time, with evidence of declining P release after Day 8. Struvite was most effective as a P source in the Cf followed by Se and Ia. Compared to SSP, there was significant improvement in maize grown on the Cf, while the reverse occurred in the Se. Maize grown in the Ia did not respond to either struvite or SSP. It was concluded that the phosphorus sorption was the main limiting factor that governed struvite effectiveness as a P source.

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Section: Discussionmentioning

confidence: 99%

Possible use of struvite as an alternative phosphate fertilizer

Nongqwenga

Muchaonyerwa

Hughes

et al. 2017

J. Soil Sci. Plant Nutr.

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“…However, the values are much smaller than those for Brazilian Oxisols (De Mesquita Filho and Torrent, 1993), Philippine Oxisols formed on volcanic materials (Poudal and West, 1999), Indonesian red soils on volcanic tuff (Siradz, 2000), New Caledonian oxide-rich Ferrasols on ultramafic rocks (Dubus and Becquer, 2001), Hawaii and Puerto Rico Oxisols (Strahm and Harrison, 2007), Tanzanian Ultisols and Oxisols (Gimsing et al, 2007) and Portuguese Andisols (Auxtero et al, 2008). The higher values for volcanic soils are not surprising as such soils commonly contain amorphous aluminosilicates which have a very high P-retention capacity (Juo and Fox, 1977;Poudal and West, 1999;Auxtero et al, 2008) but the Oxisols and the Ferralsols are pedologically similar to some of these Thai soils.…”

Section: Phosphate Sorption Coefficientsmentioning

confidence: 90%

Phosphate sorption and desorption by Thai upland soils

et al. 2009

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“…For example, an initial maximum P concentration of 50 mg P L À1 was used for temperate Appalachian soils (Anghinoni et al 1996). However, because tropical soils are high in oxides and clay-sized particles and tend to have higher P sorption capacities (Walker and Syers 1976;Fontes and Weed 1996;Poudel and West 1999;Elser et al 2007;Auxtero et al 2008;Yang et al 2014;de Campos et al 2016), higher initial P concentrations may be required to reach the plateau of the isotherm and appropriately fit the Langmuir Qmax parameter. Despite the need for high initial P concentrations, many studies with tropical soils used maximum P concentrations as low as 100 mg P L À1 for soils in Indonesia (Hartono et al 2005).…”

Section: Comparison Of Qmax Values With Literature Qmax Valuesmentioning

confidence: 99%

“…First, Qmax can be underestimated due to low initial P concentrations added to the soils (Harter 1984). Tropical soils are particularly prone to this potential source of error due to their high P sorption capacities (Walker and Syers 1976;Fontes and Weed 1996;Poudel and West 1999;Elser et al 2007;Auxtero et al 2008;Yang et al 2014;de Campos et al 2016). Further, there is an absence of reported parameter uncertainties in the current literature, such as standard error or confidence intervals (Ryden et al 1977;Fox 1982;Anghinoni et al 1996;Fontes and Weed 1996;Gichangi et al 2008;Bastounopoulou et al 2011;Munhoz et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Phosphorus sorption on tropical soils with relevance to Earth system model needs

et al. 2019

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Phosphorus (P) availability critically limits the productivity of tropical forests growing on highly weathered, low-P soils. Although efforts to incorporate P into Earth system models (ESMs) provide an opportunity to better estimate tropical forest response to climate change, P sorption dynamics and controls on soil P availability are not well constrained. Here, we measured P and dissolved organic carbon (DOC) sorption isotherms on 23 soils from tropical Oxisol, Ultisol, Inceptisol, Andisol, and Aridisol soils using P concentrations from 10 to 500mg P L−1, and DOC concentrations from 10 to 100mg DOC L−1. Isotherms were fit to the Langmuir equation and parameters were related to soil characteristics. Maximum P sorption capacity (Qmax) was significantly correlated with clay content (ρ=0.658) and aluminium (Al)- or iron (Fe)-oxide concentrations (ρ=0.470 and 0.461 respectively), and the DOC Qmax was correlated with Fe oxides (ρ=0.491). Readily available soil characteristics could eventually be used to estimate Qmax values. Analysis of literature values demonstrated that the maximum initial P concentration added to soils had a significant impact on the resultant Qmax, suggesting that an insufficiently low initial P range could underestimate Qmax. This study improves methods for measuring P Qmax and estimating Qmax in the absence of isotherm analyses and provides key data for use in ESMs.

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Phosphorus sorption maxima and desorbability in selected soils with andic properties from the Azores, Portugal

Cited by 20 publications

References 35 publications

Possible use of struvite as an alternative phosphate fertilizer

Possible use of struvite as an alternative phosphate fertilizer

Phosphate sorption and desorption by Thai upland soils

Phosphorus sorption on tropical soils with relevance to Earth system model needs

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