Phosphorus sorption index in humid tropical soils

Campos, Murilo de; Antonângelo, João Arthur; Alleoni, Luís Reynaldo Ferracciú

doi:10.1016/j.still.2015.09.020

Cited by 77 publications

(39 citation statements)

References 29 publications

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“…3) is explained by the dynamics of P which can be readily adsorbed on the clay surface. This kind of adsorption reaction is a characteristic of soils with a high presence of the minerals: kaolinite, iron and aluminum oxides, which are typically evident in tropical soils with a clay texture (Nascimento et al 2018;Campos et al 2016). As expected, organic matter also presented a decrease over time (53% less) due to higher soil microbial activities.…”

Section: Nutrients Release In the Periodsmentioning

confidence: 99%

Enriched animal manure as a source of phosphorus in sustainable agriculture

Almeida

Queiroz

Mikhael

et al. 2019

Int J Recycl Org Waste Agricult

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Purpose Due to the pressures of conforming to environmental quality standards and the increased costs of mineral fertilizer importation, there is growing interest in the use of organic residues as fertilizers. To test the hypothesis that indicates the quantity of animal manure (AM) depends on the phosphorus (P) needs of the crops, an experiment was run using three organic animal manures (chicken-CM, turkey-TM, and cow manure-CoM), enriched with limestone, gypsum, and phosphorus. Methods A greenhouse experiment was run using AM incorporated in a clayey soil, at a rate that equates to the P needs of Brachiaria sp. Contents of phosphorus, potassium (K + ), calcium (Ca +2 ), magnesium (Mg +2 ), sodium (Na + ), organic matter (OM), and values of pH and cation exchange capacity (CEC) were monitored during 120 days. Plants were collected to determine the dry matter.

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Section: Nutrients Release In the Periodsmentioning

confidence: 99%

Enriched animal manure as a source of phosphorus in sustainable agriculture

Almeida

Queiroz

Mikhael

et al. 2019

Int J Recycl Org Waste Agricult

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“…However, sediment P species in reclamation culture ponds remain unclear. In addition, traditional risk assessment of P‐induced eutrophication was estimated by maximum P adsorption capacity based on a series of Langmuir isotherm experiments . Bache and Williams have developed a simple and alternative way to calculate maximum P adsorption capacity called the P sorption index (PSI), and subsequent studies have used PSI to evaluate sediment maximum P adsorption capacity .…”

Section: Introductionmentioning

confidence: 99%

“…Bache and Williams have developed a simple and alternative way to calculate maximum P adsorption capacity called the P sorption index (PSI), and subsequent studies have used PSI to evaluate sediment maximum P adsorption capacity . Besides, the degree of P saturation (DPS) also is a potential risk indicator of P loss from sediment . Furthermore, Huang et al have developed the phosphorus‐induced eutrophication risk index (ERI), as the percentage of DPS divided by PSI, to evaluate the potential ecological risk of sediment P. Up to date, numerous studies have evaluated the sediment P‐induced eutrophication risk of coastal estuaries and lakes, but little was known about the sediment P species and associated ecological risk in reclamation culture ponds of coastal wetland.…”

Section: Introductionmentioning

confidence: 99%

“…[16,29] Besides, the degree of P saturation (DPS) also is a potential risk indicator of P loss from sediment. [27,30] Furthermore, Huang et al [31] have developed the phosphorus-induced eutrophication risk index (ERI), as the percentage of DPS divided by PSI, to evaluate the potential ecological risk of sediment P. Up to date, numerous studies have evaluated the sediment P-induced eutrophication risk of coastal estuaries and lakes, [16,18,32] but little was known about the sediment P species and associated ecological risk in reclamation culture ponds of coastal wetland.…”

Section: Introductionmentioning

confidence: 99%

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Reclamation Culture Alters Sediment Phosphorus Speciation and Ecological Risk in Coastal Zone of Southeastern China

Gao

Chen

et al. 2018

CLEAN Soil Air Water

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Sediment phosphorus (P) speciation plays a critical role in coastal wetland ecosystems, while the response of P speciation to reclamation culture remains unclear. In this study, sediment P species (total P [TP], organic P [Org‐P], inorganic P [IP], iron‐ and aluminum‐bound P [Fe/Al‐P], calcium‐bound P [Ca‐P], loosely adsorbed P [Lsor‐P], P sorption index [PSI], and P adsorption saturation [DPS] are investigated in the natural marsh wetland, 3‐year and 15‐year reclamation culture ponds. Sediment P pollution level and eutrophication risk are evaluated based on the single‐factor standard index (Si) and eutrophication risk index (ERI). Furthermore, a simulation experiment is conducted to reveal the effects of baits input and overlying water aeration on sediment P species and ecological risk. Measured sediment TP, Org‐P, IP, Fe/Al‐P, Ca‐P, and Lsor‐P concentrations are significantly higher in 15‐year culture ponds than in 3‐year culture ponds and natural marsh wetland. Sediment PSI is lower in reclamation culture ponds than in natural marsh wetland, while DPS is just opposite. The Si and ERI are higher in 15‐year culture ponds than in natural marsh wetland, suggesting that reclamation culture significantly increases sediment P pollution level and eutrophication risk. A short‐term simulation experiment further indicates that baits input and overlying water aeration can alter sediment P dynamics and increase sediment P loading. Overall, these results confirm that reclamation culture can make more available P accumulation and thus increase eutrophication risk of adjacent coastal water.

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“…Likewise, the correlation result proved that the higher the concentrations of extractable iron and aluminum in soil, the lower the concentrations of P determined from HCl extract. It has been reported by several studies that it is oxyhydroxydes of aluminum and iron in weathered acidic soils rather than Ca that supersede the active surface of soils on which P is adsorbed (Agbenin 2003;Yan et al 2013;Campos et al 2016). Therefore, with increasing concentrations of these free oxides, the amount of HCl extractable P decreases.…”

Section: Extent Of Phosphorus Saturationmentioning

confidence: 99%

Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

et al. 2018

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Background: Soil acidity and low availability of P are among the major problems limiting crop production in the highlands of Ethiopia. The current study was conducted to evaluate the distribution of chemical P forms and selected physical and chemical properties of soils in Cheha and Dinsho districts, southern highlands of Ethiopia. Twelve representative composite soil samples were collected from the surface layer (0-15 cm) and analyzed for selected soil properties. Analysis of available P and oxalate extractable P, Al and Fe, and P fractionation were done following standard procedures. Results:The pH of soils in the study area ranged from 4.65 to 5.45. In the study area the Mehlich-3 extractable P ranged from 8.90 to 25.75 mg kg −1 , while the Bray-I extractable P varied from 8.54 to 22.81 mg kg −1. The studied soils had a total P content that ranged from medium to very high. Mehlich-3 P was positively and significantly correlated with pH, CEC and OM, while it was negatively and significantly (P ≤ 0.01) correlated with exAc and exAl. Oxyhydroxides of iron and aluminum were dominating the exchange sites of the studied soils. In terms of the relative abundance of P forms, Res-P and HCl-P followed by NaOH-P o and NaOH-P i were the dominant P forms in Cheha and Dinsho districts respectively. The total sum of readily available P forms (NH 4 Cl-P i , NaHCO 3 -P i and NaHCO 3 -P o ) did not exceed 4% of the total P. Conclusion:Soils of the study area were acidic in reaction and found to have low available P. Given the presence of considerable amount of total P, low P availability and high soil acidity in the study areas, further research has to be done on adsorption characteristics to determine the P requirements of the soils for better P management.

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Phosphorus sorption index in humid tropical soils

Cited by 77 publications

References 29 publications

Enriched animal manure as a source of phosphorus in sustainable agriculture

Enriched animal manure as a source of phosphorus in sustainable agriculture

Reclamation Culture Alters Sediment Phosphorus Speciation and Ecological Risk in Coastal Zone of Southeastern China

Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

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