Estimating soil phosphorus sorption saturation from Mehlich-3 data

2002 ◽  
Vol 33 (11-12) ◽  
pp. 1825-1839 ◽  
Author(s):  
Peter J. A. Kleinman ◽  
Andrew N. Sharpley
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Sorption

scholarly journals Iron oxides and organic matter on soil phosphorus availability

2016 ◽  
Vol 40 (4) ◽  
pp. 369-379 ◽  
Author(s):  
Jessé Rodrigo Fink ◽  
Alberto Vasconcellos Inda ◽  
Tales Tiecher ◽  
Vidal Barrón
Keyword(s):  
Organic Matter ◽  
Iron Oxides ◽  
Soil Phosphorus ◽  
Phosphorus Availability ◽  
Phosphorus Sorption ◽  
Effective Strategies ◽  
Phosphorus Sorption Capacity ◽  
Soil Components ◽  
Relationship Of ◽  
The Relationship

ABSTRACT Continuous crop expansion has led to a growing demand for phosphate fertilizers. A sound knowledge of the dynamics of phosphorus, and its interaction with iron oxides and organic matter, can be useful to develop effective strategies for sustainable management, especially in a scenario of increasing shortage of mineral phosphate resources. In this paper, we review the relationship of phosphate to iron oxides and organic matter, and its effect on phosphorus availability. Crops typically obtain phosphate from weathered minerals and dissolved fertilizers. However, the amount of phosphorus present in the soil solution depends on the extent to which it is adsorbed or desorbed by iron oxides, which may be influenced by interactions with organic matter. Therefore, systems for fertilizer recomendation based on methodologies considering interactions between soil components such as oxides and organic matter, and the phosphorus sorption capacity resulting from such interactions (e.g. residual P analysis), may be more reliable to ensure efficient, rational use of phosphate.

Reduced leaching of nitrate, ammonium, and phosphorus in a sandy soil by fly ash amendment

Soil Research ◽  
2002 ◽  
Vol 40 (7) ◽  
pp. 1201 ◽  
Author(s):  
S. M. Pathan ◽  
L. A. G. Aylmore ◽  
T. D. Colmer
Keyword(s):  
Fly Ash ◽  
Sandy Soil ◽  
Nutrient Management ◽  
Soil Phosphorus ◽  
Sandy Soils ◽  
Phosphorus Sorption ◽  
Native Soil ◽  
Extractable P ◽  
P Leaching ◽  
Amended Soil

Low ionic sorption capacities and high hydraulic conductivities of sandy soils contribute to the potential for leaching of nutrients applied to these soils. Batch sorption experiments were used to examine NO3–, NH4+, and P sorption/desorption isotherms for Karrakatta sand and Kwinana fly ash. Column experiments assessed leaching of these nutrients from this sandy soil, when amended with 4 rates (0, 5, 10, and 20%, wt/wt) of fly ash. The sorption of NO3–, NH4+, and P was higher for fly ash than the sandy soil. Phosphorus sorption was greatest for unweathered fly ash, followed by weathered fly ash and then the soil; for example, sorption from a solution containing 20 mg/L P was 90%, 28%, and 14%, respectively. Desorption of P was much slower in the unweathered fly ash than weathered fly ash or the soil. Leachates collected from columns containing fly ash amended soil (5, 10, and 20%, wt/wt) generally had lower concentrations of NO3– and NH4+ than leachates from non-amended soil. Prior to adding fertiliser, the concentration of P was greater in leachate from fly ash amended soil than from the native soil, due to fly ash (weathered) itself containing 92.5 mg/kg of extractable P. However, from day 35 onwards, the concentration of P was lower in leachates from soil amended with 10% or 20% fly ash than from non-amended soil. Thus, fly ash amendment retarded NO3–, NH4+, and P leaching in the sandy soil and may therefore be a useful tool for improvement of nutrient management in sandy soils.

Soil phosphorus sorption and availability as a function of high phosphorus fertilizer additions

1995 ◽  
Vol 26 (11-12) ◽  
pp. 1863-1872 ◽  
Author(s):  
R. Indiati ◽  
A.N. Sharpley ◽  
C. Izza ◽  
A. Figliolia ◽  
B. Felici ◽  
...  
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Sorption ◽  
Phosphorus Fertilizer ◽  
High Phosphorus

Effect of the number of years of vegetable cultivation on soil phosphorus sorption-desorption characteristics

2010 ◽  
Vol 18 (4) ◽  
pp. 706-710
Author(s):  
Xiu-Mei GAO ◽  
Ji-Dong WANG ◽  
Yong-Chun ZHANG ◽  
Geng-Mao ZHAO ◽  
Zhao-Pu LIU ◽  
...  
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Sorption ◽  
Vegetable Cultivation

scholarly journals Soil phosphorus sorption properties in different fertilization systems

2019 ◽  
Vol 65 (No. 2) ◽  
pp. 78-82 ◽  
Author(s):  
Ewa Szara ◽  
Tomasz Sosulski ◽  
Magdalena Szymańska
Keyword(s):  
Binding Energy ◽  
Soil Phosphorus ◽  
Sorption Properties ◽  
Phosphorus Sorption ◽  
Sorption Coefficient ◽  
P Sorption ◽  
P Content ◽  
Sorption Parameters ◽  
Total P

The study aimed at the evaluation of the accumulation and vertical distribution of different forms of phosphorus (P) in reference to phosphorus sorption properties subject to mineral (NPK), mineral-organic (NPK + M), and organic (M) fertilisation. It was carried out in a long-term experimental field in Skierniewice (Central Poland) conducted since 1923 under rye monoculture. Total P content in the M and NPK soil profile was similar and lower than in the NPK + M soil. The content of organic P in A<sub>p</sub> and E<sub>et</sub> horizons of both manured soils was similar and higher than in the NPK soil. The Langmuir P sorption maximum (S<sub>max</sub>) in the studied soils ranged from 39.7 to 90 mg P/kg, while the Freundlich P sorption coefficient a<sub>F</sub> ranged from 6.9 to 41.9 mg P/kg. Higher variability of parameters related to the binding energy from the Lanqmuir (k) and Freundlich (a<sub>F</sub>) equations was determined between soil horizons than between the fertilisation systems. Nonetheless, in M and NPK + M soils, sorption parameters a<sub>F</sub> and S<sub>max</sub> and binding energy (k, b<sub>F</sub>) were considerably lower than in the NPK soil. The content of water extracted P in manured soils was higher than in the NPK soil.

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