Soil phosphorus sorption properties in different fertilization systems

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 Ap and Eet horizons of both manured soils was similar and higher than in the NPK soil. The Langmuir P sorption maximum (Smax) in the studied soils ranged from 39.7 to 90 mg P/kg, while the Freundlich P sorption coefficient aF 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 (aF) equations was determined between soil horizons than between the fertilisation systems. Nonetheless, in M and NPK + M soils, sorption parameters aF and Smax and binding energy (k, bF) 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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Phosphorus sorption - desorption by purple soils of China in relation to their properties

Soil Research ◽

10.1071/sr06135 ◽

2007 ◽

Vol 45 (3) ◽

pp. 182 ◽

Cited By ~ 20

Author(s):

M. Li ◽

Y. L. Hou ◽

B. Zhu

Keyword(s):

Binding Energy ◽

Single Point ◽

Phosphorus Sorption ◽

Soil P ◽

P Sorption ◽

Desorption Curve ◽

Degree Of P Saturation ◽

Soil Test P ◽

Sorption Index ◽

Water Eutrophication

The understanding of phosphorus (P) sorption and desorption by soil is important for better managing soil P source and relieving water eutrophication. In this study, sorption–desorption behaviour of P was investigated in purple soils, collected from 3 kinds of purple parent materials with different kinds of land cover, in the upper reaches of Yangtze River, China, using a batch equilibrium technique. Results showed that most of the farmed purple soils had P sorption capacity (PSC) values ranging from 476 to 685 mg P/kg, while higher PSC values were observed in the soils from forestland and paddy field. A single-point P sorption index (PSI) was found to be significantly correlated with PSC (R2 = 0.94, P < 0.001), suggesting its use in estimating PSC across different types of purple soils. The PSC of purple soils was positively and strongly related to the contents of amorphous Fe and Al oxides (r = 0.73, P < 0.001), clay (r = 0.55, P < 0.01), and organic matter (r = 0.50, P < 0.05). Furthermore, the constant relating to binding strength was positively correlated with the content of amorphous Fe and Al oxides (r = 0.66, P < 0.01), but negatively correlated with labile Ca (r = –0.43, P < 0.05) and soil pH (r = –0.53, P < 0.01). Some acidic purple soils with high binding energy featured a power desorption curve, suggesting that P release risk can be accelerated once the P sorbed exceeds a certain threshold. Other soils with low binding energy demonstrated a linear desorption curve. The P desorption percentage was significantly correlated with soil test P (r = 0.78, P < 0.01) and the degree of P saturation (r = 0.82, P < 0.01), but negatively correlated with PSC (r = –0.66, P < 0.01).

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Relationship Between Exchangeable Alumunium and Phosphorus Sorption Parameters of Indonesian Acid Soils

Jurnal Ilmu Tanah dan Lingkungan ◽

10.29244/jitl.6.2.70-74 ◽

2004 ◽

Vol 6 (2) ◽

pp. 70-74

Author(s):

A Hartono

Keyword(s):

Acid Soils ◽

Sorption Isotherms ◽

Clayey Soils ◽

Phosphorus Sorption ◽

General Reaction ◽

P Sorption ◽

Hydrous Oxides ◽

Sorption Parameters ◽

Main Component

In acid soils, phosphorus (P) sorption is generally attributed to hydrous oxides of Fe and Aluminum (AI) particularly intropical soils with low pH. However, reports concerning the role of exchangeable AI in P sorption mechanism are very liltle.Phosphorus (P) sorption isotherms were studied in fifteen acid upland soils containing different amount of exchangeable AI. Psorption characteristics were satisfactorily described by the Langmuir equation. which was used to determine P sorptionmaxima and bonding energies, with r values ranging from 0.97 to 0.99. The soils varied widely in their capacities to sorb P.P sorption maxima rangedfrom 303 to 1429 mg kg-I (mean 627 mg kg-I) and bonding energies from 0.65 to 8.00 L mtl (mean 2.39 L mg-I). Exchangeable AI was found not correlated with P sorption maxima (r = -0.11) but significantly correlated with P bonding energies (r = 0.68**). This was clearly shown by clayey soils from Java and Sumatra but not in sandy soils fromKalimantan. The results suggested that in general. reaction of exchangeable AI with P increased P bonding energy butexchangeable AI was not the main component in P sorption maximum

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Phosphorus Sorption Behavior of Torrefied Agricultural Byproducts under Sonicated Versus Non-Sonicated Conditions

Sustainable Agriculture Research ◽

10.5539/sar.v6n4p1 ◽

2017 ◽

Vol 6 (4) ◽

pp. 1 ◽

Cited By ~ 1

Author(s):

Jehangir H. Bhadha ◽

Stephen P. Jennewein ◽

Raju Khatiwada

Keyword(s):

Crop Production ◽

Phosphorus Concentration ◽

Sorption Behavior ◽

Phosphorus Sorption ◽

P Sorption ◽

Concentration Maximum ◽

Major Nutrients ◽

P Leaching ◽

Palm Fronds ◽

Total P

The application of agrichar derived from organic feedstocks has the potential to improve soil fertility and crop production by providing major nutrients like phosphorus (P) to the crop, and in some cases also reducing P leaching. The effect of agrichar on the leaching of P in soils is not uniform and can vary depending on the type of agrichar and amount applied. The objective of this study was to (i) evaluate the behavior of four agrichars (rice hulls RH, palm fronds PF, horse bedding HB, and bagasse BG) for their ability to retain/release P and (ii) determine the effect of wet sonication on P sorption behavior. The feedstocks were torrefied at 500 °C using a top-lit updraft gasifier and used in multiple batch incubation experiments to evaluate equilibrium phosphorus concentration, maximum P sorption capacity (Smax), and adsorption/desorption potential. Both, RH (12.6 g kg-1) and HB (11.5 g kg-1) contained 10-15 times higher total P concentration than PF and BG, rendering RH and HB as potentially suitable products to be used as soil amendments. However, this initial P content of the agrichar seemed to have an overriding effect on the P sorption behavior of the agrichar. PF had Smax of 676 (±127) mg kg-1 for the non-sonicated agrichar, and 237 (±91) mg kg-1 following sonication. There was significant increase in CEC for PF and BG agrichar upon sonication. PF agrichar increased from 27 (±3) cmolc kg-1 to 41 (±4) cmolc kg-1 with sonication. Similarly, BG agrichar CEC increased from 21 (±2) cmolc kg-1 to 45 (±5) cmolc kg-1 with sonication. Initial total P and Ca concentration and their ratios was found to play significant roles on P adsorption and desorption. Major cations like Ca, Fe, Al and Mn are found to act as active sorption site for phosphorus controlling its fate and mobility along with compounding effects of other physicochemical parameters.

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Effects of Pig Slurry Application and Crops on Phosphorus Content in Soil and the Chemical Species in Solution

Revista Brasileira de Ciência do Solo ◽

10.1590/01000683rbcs20140452 ◽

2015 ◽

Vol 39 (3) ◽

pp. 774-787 ◽

Cited By ~ 8

Author(s):

Lessandro De Conti ◽

Carlos Alberto Ceretta ◽

Paulo Ademar Avelar Ferreira ◽

Felipe Lorensini ◽

Cledimar Rogério Lourenzi ◽

...

Keyword(s):

Soil Solution ◽

Soil Phosphorus ◽

Chemical Species ◽

Available P ◽

Experimental Unit ◽

Pig Slurry ◽

P Content ◽

Before And After ◽

Santa Maria ◽

Total P

The application of pig slurry rates and plant cultivation can modify the soil phosphorus (P) content and distribution of chemical species in solution. The purpose of this study was to evaluate the total P, available P and P in solution, and the distribution of chemical P species in solution, in a soil under longstanding pig slurry applications and crop cultivation. The study was carried out in soil columns with undisturbed structure, collected in an experiment conducted for eight years in the experimental unit of the Universidade Federal de Santa Maria (UFSM), Santa Maria (RS). The soil was an Argissolo Vermelho distrófico arênico (Typic Hapludalf), subjected to applications of 0, 20, 40, and 80 m3 ha-1 pig slurry. Soil samples were collected from the layers 0-5, 5-10, 10-20, 20-30, 30-40, and 40-60 cm, before and after black oat and maize grown in a greenhouse, for the determination of available P, total P and P in the soil solution. In the solution, the concentration of the major cations, anions, dissolved organic carbon (DOC), and pH were determined. The distribution of chemical P species was determined by software Visual Minteq. The 21 pig slurry applications increased the total P content in the soil to a depth of 40 cm, and the P extracted by Mehlich-1 and from the solution to a depth of 30 cm. Successive applications of pig slurry changed the balance between the solid and liquid phases in the surface soil layers, increasing the proportion of the total amount of P present in the soil solution, aside from changing the chemical species in the solution, reducing the percentage complexed with Al and increasing the one complexed with Ca and Mg in the layers 0-5 and 5-10 cm. Black oat and maize cultivation increased pH in the solution, thereby increasing the proportion of HPO42- and reducing H2PO4- species.

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Evaluation of phosphorus mobility in soil using different extraction methods

Plant Soil and Environment ◽

10.17221/43/2009-pse ◽

2009 ◽

Vol 55 (No. 7) ◽

pp. 267-272 ◽

Cited By ~ 13

Author(s):

M. Kulhánek ◽

J. Balík ◽

J. Černý ◽

V. Vaněk

Keyword(s):

Field Experiments ◽

Soil Phosphorus ◽

Extraction Methods ◽

P Fractionation ◽

Aqua Regia ◽

Inorganic P ◽

Soil Solution P ◽

Total P ◽

Term Field

Soil samples (from Czech and German long-term field experiments) were used to estimate different soil phosphorus (P) fractions. More than 200 topsoil (0–30 cm) samples from different fertilizing treatments were taken. These were analyzed for P in soil solution (PCaCl2) [0.01M CaCl2 extract], exchangeable sorbed P (Pex) [anion exchange (AE) membranes] and bioavailable P [Doppel-Lactat and Mehlich 3 (PDL and PM3)]. Other fractions analyzed were total inorganic (Pin), total (PM-tot) and organic (Porg) P [fractionation after Marks], P sorbed on Fe and Al (PFeAl) [fractionation after Schwertmann] and residual P (Par) [aqua regia extract]. Comparison of medians appeared to be better for evaluating extraction abilities. Phosphorus fractions were in the following order: (Par = 100%); PCaCl2 (0.2%) < Pex (9%) < PDL (10%) < PM3 (16%) < Pin (24%) < Porg (37%) < PFeAl (55%) < PM-tot (59%). Low amounts of Pin, Porg and PM-tot did not verify the applicability of the Marks’ fractionation for the set of studied soils. Close correlations at P ≤ 0.001 were found for all methods for estimating the fractions of bioavailable phosphates (PCaCl2, Pex, PDL and PM3). Statistically significant relations were observed between Pin with Par, PM-tot and PFeAl.

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Addition of phosphorus to soils with low to medium phosphorus retention capacities. I. effect on soil phosphorus sorption properties

Communications in Soil Science and Plant Analysis ◽

10.1080/00103620009370506 ◽

2000 ◽

Vol 31 (9-10) ◽

pp. 1179-1194 ◽

Cited By ~ 7

Author(s):

Roberto Indiati

Keyword(s):

Soil Phosphorus ◽

Sorption Properties ◽

Phosphorus Retention ◽

Phosphorus Sorption

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Phosphorus Sorption Kinetics in Reclaimed Lignite Mine Soils under Different Age Stands ofRobinia pseudoacaciaL. in Northeast Germany

Applied and Environmental Soil Science ◽

10.1155/2015/512596 ◽

2015 ◽

Vol 2015 ◽

pp. 1-19 ◽

Cited By ~ 3

Author(s):

Anna Slazak ◽

Dirk Freese

Keyword(s):

Robinia Pseudoacacia ◽

Sorption Kinetics ◽

Phosphorus Sorption ◽

P Sorption ◽

Short Rotation ◽

Lignite Mine ◽

Significant Difference ◽

Saturation Factor ◽

Plant Available P ◽

Total P

The objectives of the work were to study phosphorus (P) dynamics in postmining soils under short rotation coppices at different stages ofRobinia pseudoacaciaL. growth (2, 3, 4, and 14 years old). From the results obtained, the amount of total P, total organic P, plant available P, and P stock increased with increasing age ofR. pseudoacacia. However, values were very low compared to that recommended for optimum plant growth, reflecting a general deficit in P. Additionally, the P sorption and desorption processes were investigated. The total P sorption capacity obtained from the laboratory experiments was on average, 2.5 times greater for soils under the oldestR. pseudoacaciathan values measured at the younger sites. Values of P saturation factor (α) were comparatively lower compared to that reported in the literature. This may be attributed primarily to the less P saturation of the postmining soils, coupled with rather small contents of oxalate ironFeoxand aluminiumAlox(sum of 47 mmol kg−1). Results demonstrate significant difference between 2 and 14 years oldR. pseudoacacia; thus establishing of short rotation coppice (SRC) on degraded marginal sites may be a valuable method of soil reclamations.

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Phosphorus sorption characteristics of a light-weight aggregate

Water Science & Technology ◽

10.2166/wst.2003.0290 ◽

2003 ◽

Vol 48 (5) ◽

pp. 93-100 ◽

Cited By ~ 16

Author(s):

T. Zhu ◽

T. Maehlum ◽

P.D. Jenssen ◽

T. Krogstad

Keyword(s):

Grain Size ◽

Light Weight ◽

Phosphorus Sorption ◽

P Sorption ◽

P Concentration ◽

System P ◽

P Content ◽

Fractionation Analysis ◽

Light Weight Aggregate ◽

P Retention

A light-weight aggregate (LWA) made of expanded clay used as a filter media in wastewater treatment, was tested for sorption of phosphorus (P) in laboratory experiments. The objectives were to investigate the different P retention pools and how grain size, time, temperature and changed P concentration influenced the P binding mechanisms in this type of filter. Three different grain sizes (0-2 mm, 2-4 mm and 0-4 mm) were tested in a batch experiment. The isotherm for the P sorbed by the contact medium (including retention and fixation) was obtained under laboratory conditions. Fifty percent of the P sorption occurred in the first 4-8 hours. Temperature did not substantially influence P sorption for 0-2 mm grain size LWA. In the LWA suspension system, P desorption did not occur when the P content in the loading solution decreased. Fractionation analysis indicated that Ca-bound P, loosely-bound P, and Al-bound P were the predominant P retention pools. The loosely-bound P pool was determined primarily by the equilibrated P concentration in the system. Fe-bound P was negligible in the P sorption of LWA.

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Effects of 29-year long-term fertilizer management on soil phosphorus in double-crop rice system

Plant Soil and Environment ◽

10.17221/179/2018-pse ◽

2018 ◽

Vol 64 (No. 5) ◽

pp. 221-226

Author(s):

Lv Zhenzhen ◽

Liu Xiumei ◽

Hou Hongqian ◽

Liu Yiren ◽

Ji Jianhua ◽

...

Keyword(s):

Crop Production ◽

Soil Phosphorus ◽

Critical Values ◽

Jiangxi Province ◽

Olsen P ◽

P Content ◽

P Balance ◽

Using Data ◽

Late Rice

Rational soil phosphorus (P) management is significant to crop production and environment protection. Little information is available on soil Olsen-P balance and critical values in double-crop rice in China. The main aim of the study was to relate soil Olsen-P to apparent P balance and to determine Olsen-P critical value for early and late rice using data from a 29-year study (1984~2012) at the Jiangxi province. The results showed that Olsen-P decreased by 0.12~0.26 mg/kg/year without P addition and increased by 0.56~2.52 mg/kg/year with P fertilization. Olsen-P decreased by 0.30 mg/kg for CK and NK under an average deficit of 100 kg P/ha, and increased by an average of 9.10 mg/kg in treatments with organic manures and were 4.55 times higher than chemical fertilizers with 100 kg/ha of P surplus. The critical values for early and late rice were 22.70 and 22.67 mg/kg, respectively. The average Olsen-P content is 90.89 mg/kg after 29-year application of chemical fertilizer and manures. Therefore, decreasing the amount of total P input and increasing the compost portion should be recommended to improve food production and protect environment in red paddy soils in south China.

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Phosphorus Sorption Characteristics of Luvisols and Nitisols in North Ethiopian Soils

Applied and Environmental Soil Science ◽

10.1155/2021/8823852 ◽

2021 ◽

Vol 2021 ◽

pp. 1-7

Author(s):

Ashebir Getie ◽

Alemayehu Kiflu ◽

Gashaw Meteke

Keyword(s):

Clay Content ◽

Fertilizer Application ◽

Application Rate ◽

Soil Types ◽

Phosphorus Sorption ◽

Sorption Data ◽

P Sorption ◽

Fertilizer Application Rate ◽

P Fertilizer ◽

Sorption Parameters

Crop response to phosphorus (P) application is often erratic in most acidic soil types. The main processes for P losses from agricultural fields are fixation, crop removal, erosion, surface runoff, and subsurface leaching. The purpose of this experiment was to evaluate adsorption properties of selected soils, determine the external phosphorous requirements (EPRs) of the soils, and identify factors contributing to P sorption in two soils in North Ethiopia. In this experiment, separately weighed 1 g soil samples were equilibrated with KH2PO4 at rates of 0.5, 5, 10, 20, 30, 40, and 50 mg PL−1. The P sorption data were fitted well with both Langmuir and Freundlich models with average r2 values of 0.91 and 0.88, respectively. The adsorption maximum (Xm) of the Langmuir isotherm ranged from 588.20 mg P kg−1 soil in Luvisols to 833.3 mg P kg−1 soil in Nitisols. The EPRL values ranged between 86.20 to 93.28 mg P kg−1 for soils of the study area. Among the soil properties, clay content and Ex. Al were positively correlated with Xm. The path analysis revealed that clay, pH, and Av. P had a direct effect on P sorption parameters. The EPRL of the studied soils was 3.44 to 3.6 times greater than the blanket P fertilizer rate recommendation. It is concluded that P sorption models can effectively be used to discriminate soils based on P fixation ability. The result further indicates that the current P fertilizer application rate of 50 kg P ha−1 being practiced across all soil types should be revised after validating the models and EPR values estimated in this study for each soil both under greenhouse and in-the-field conditions.

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