Profile Distributions of Dissolved and Colloidal Phosphorus as Affected by Degree of Phosphorus Saturation in Paddy Soil

Zang, Ling; Tian, Guangming; Liang, Xin-Qing; He, Minfei; Bao, Qibei; Yao, Jin-Hua

doi:10.1016/s1002-0160(12)60088-5

Cited by 23 publications

(14 citation statements)

References 39 publications

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“…This confirmed previous studies showing the dominance of P coll in water-extracted P in different agricultural lands (Ilg et al, 2005;Zang et al, 2013). For both studied soils, MRP coll comprised a substantial component of TP coll (RS, 59.7%; VS, 72.9%).…”

Section: Resultssupporting

confidence: 91%

Molecular Speciation of Phosphorus Present in Readily Dispersible Colloids from Agricultural Soils

Liu

Yang

Liang

et al. 2014

Soil Science Society of America Journal

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Section: Resultssupporting

confidence: 91%

Molecular Speciation of Phosphorus Present in Readily Dispersible Colloids from Agricultural Soils

Liu

Yang

Liang

et al. 2014

Soil Science Society of America Journal

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“…The mass of soil colloidal particles increased with soil depth in both seasons (Table 5), which was similar to a previous study (Zang et al 2013). In 0-5 and 5-30 cm depth, the amount of soil colloidal particles after oilseed rape season was more than that after rice season.…”

Section: Distribution Of Colloids and P Coll In Soil Profilesupporting

confidence: 90%

“…In soil colloidal solutions under organic and inorganic fertilizations, 8-58 % of total P was detected as soil P coll by the microfiltration method. Moreover, 78-98 % of total P was detected as soil P coll via the ultracentrifugation method, and proportions of soil P coll showed an increasing trend with soil depth under organic P fertilization (Zang et al 2013). In field runoff, the size distribution of colloidal particles was in the range of 1-1000 nm via ultrafiltration.…”

Section: Contents Of P Coll In Other Agricultural Fieldsmentioning

confidence: 98%

“…Organic colloidal particles in manure fertilizers will also promote the accumulation and migration of P coll in undisturbed soil columns (Zang et al 2013). Therefore, fertilization has a significant influence on the distribution and migration of P coll through soil profile.…”

Section: Responsible Editor: Chengrong Chenmentioning

confidence: 99%

“…The OM treatment increased the mass of soil colloidal particles, which could be attributed to the release of organic colloids in swine manure (Zang et al 2011). Above this, heterogeneous physicochemical properties of deep soil might influence the release of soil colloidal particles, which included soil pH (Liang et al 2010), electrical conductivity, ion strength (Zang et al 2013), and redox potential (Henderson et al 2012). For instance, a wide range of soil solution pH can significantly influence release of P coll .…”

Section: Distribution Of Colloids and P Coll In Soil Profilementioning

confidence: 99%

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Release and migration of colloidal phosphorus from a typical agricultural field under long-term phosphorus fertilization in southeastern China

et al. 2015

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Purpose Colloid-facilitated migration of phosphorus (P) is a widely accepted phenomenon in surface and subsurface environment. Release and migration of colloidal P (P coll ) in agricultural fields are closely related to P fertilization regimes. In this study, a site-specific experiment with rice/oilseed rape rotation was conducted to determine the export potential of P coll from the field and literatures reporting the impact of P fertilization regimes on release and migration of P coll in other agricultural fields were compared. Materials and methods In this 2-year field experiment, four P fertilization regimes (no fertilizer control, inorganic P fertilizer of low and high rates, and swine manure treatment) with three replicates were conducted. Floodwater and runoff samples were collected in flooding season and the 100-cm-depth soil samples were collected after both crops' harvest seasons. Colloidal particles were separated by microfiltration and ultracentrifugation processes and determined gravimetrically. The P coll value was calculated as the difference between the concentration of total P in non-ultracentrifuged and ultracentrifuged samples. The same method was applied for the colloidal mineral elements (Fe and Al) and organic carbon.Results and discussion Total P concentration in paddy floodwater significantly increased after fertilization but decreased quickly in the following days, maintaining at 6.0 mg m −2 . In soil extracts, concentration of P coll was low but stable, which ranged from 6 to 22 % of total P after oilseed rape season and from 7 to 18 % after rice season. In runoff samples, there were positive correlations between P coll , colloidal Fe (Fe coll ), colloidal Al (Al coll ), and colloidal TOC (TOC coll ); the majority of P forms was molybdate reactive P. In both crops' seasons, the amount of colloids increased with soil depth. Content of soil P coll was low and occupied 0.1-2 % of total P. The literature review showed that P coll in soil solution, runoff, and leachate ranged from 1.4 to 94 % of total P. Conclusions These results suggested that although the concentrations of P coll were not high, they widely distributed in paddy floodwater, runoff, and soil profile. Fertilization regimes and planting systems had a significant influence on the contents of P coll . Moreover, the P coll binding with Fe/Al minerals and organic carbon might be an alternative route of P loss in paddy field.

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Vertical distribution of phosphorus fractions and the environmental critical phosphorus level in acidic red soil under long‐term fertilizer and lime application in southern China

Huang

Zhou

Liu

et al. 2021

J. Plant Nutr. Soil Sci.

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Background Phosphorus (P) deficiency in acidic red soil restricts crop yield. However, long‐term application of phosphate fertilizer can cause potential environmental risks due to the accumulation of P in the soil. Aims Our aim was to determine the distribution characteristics of P fractions in acidic red soil profiles and the environmental risk of soil P losses after application of organic fertilizer and lime, and analyze the key factors driving P distribution in the soil profile of acidic red soil. Methods Based on the long‑term applicationof fertilizers and quicklime in the acidic soil under wheat–maize rotation system, contents of soil Olsen‐P and CaCl2‐P, as well as pH, at multiple soil layers between 0 and 50 cm depths were monitored. The environmental critical P levels were determined using a two‐segment linear model. Results During 1990–2010 and 2011–2014, application of phosphate fertilizer or quicklime on acidic red soil significantly (p < 0.05) increased the annual average aboveground biomass of wheat and maize and P recovery efficiency. Soil Olsen‐P and CaCl2‐P contents increased with the application of phosphate fertilizer, especially in combination with manure, and the increase mainly concentrated at the 0–20‐cm soil layer. The environmental critical Olsen‐P content was 99.7 mg kg−1. The Olsen‐P contents at different soil layers were mainly affected by cumulative P and organic P inputs, but were less affected by soil pH. Conclusions The application of organic fertilizer and lime can prevent the acidification of red soil, and the application of organic fertilizer should reduce the total phosphate fertilizer input to prevent rapid accumulation of P and risk of P loss in leachate while still improving the crop utilization rate of P fertilizer. Thus, this strategy should help achieve the concomitant goals of high crop yield and environmental protection.

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Profile Distributions of Dissolved and Colloidal Phosphorus as Affected by Degree of Phosphorus Saturation in Paddy Soil

Cited by 23 publications

References 39 publications

Molecular Speciation of Phosphorus Present in Readily Dispersible Colloids from Agricultural Soils

Molecular Speciation of Phosphorus Present in Readily Dispersible Colloids from Agricultural Soils

Release and migration of colloidal phosphorus from a typical agricultural field under long-term phosphorus fertilization in southeastern China

Vertical distribution of phosphorus fractions and the environmental critical phosphorus level in acidic red soil under long‐term fertilizer and lime application in southern China

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