The use of iron oxide-impregnated filter paper for the extraction of available phosphorus from Taiwan soils

Lin, Tzu-Huei; Ho, Sheng-Bin; Houng, Kun‐Huang

doi:10.1007/bf00009194

Cited by 56 publications

(41 citation statements)

References 12 publications

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“…Similar results were reported by Lin et al (1991) in Taiwanese soils. Phosphorus uptake by wheat seedlings grown on 39 soils collected from major agricultural areas of Taiwan correlated equally well with P measured by the Pi test (r = 0.842xxx), resin test (r = 0.828xxx), Olsen test (r = 0.829 xxx) and water (r = 0.818 xxx) at 1% level.…”

Section: Phosphorus Extractedsupporting

confidence: 93%

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Iron oxide-impregnated filter paper (Pi test): II. A review of its application

Menon

Chien

Chardon³

1996

Nutr Cycl Agroecosyst

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The iron oxide impregnated filter paper test (Pi test) is a recently developed soil test for phosphorus (P) in which the FeO paper acts as an infinite sink for P mobilized in a soil solution. Several papers have been published evaluating the effectiveness of the test for predicting plant availability of P under different soil conditions. The use of FeO paper to predict algal availability of P in water bodies and runoffs has also been studied.The purpose of this paper is to review studies on the use of the Pi test to evaluate plant availability of P in soils, and predict availability of P to algae in an aquatic environment. Phosphorus extracted by the FeO paper is primarily physically bound extractable (resin P) and correlates significantly with Bray I and Mehtich P in acid soils and Olsen P in calcareous soils. Dry-matter yield and P uptake by maize (Zea mays L), kidney beans (Phaseolus vuIgaris L), and upland rice (Oryza sativa L) grown in acidic soils correlated well with Pi-P. Likewise, in calcareous soils, Pi-P was as good as Olsen-P in predicting crop response. Field trials have shown that the Pi test is a good predictor of plant yield in soils with wide ranging properties. Compared to the standard method to measure bioavailable P to algae in waters and agricultural runoffs involving lengthy algal essays culturing selenastrum capricornutum with sediment samples, the Pi method is a faster and easier method to estimate P that may be potentially available for uptake by algae.

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Section: Phosphorus Extractedsupporting

confidence: 93%

“…The close relationships between P measured by the Pi test and that by various other soil tests for soils on which the use of the test is recommended has also been reported by Van der Zee et al, 1987;Yli-Halla, 1991;Lin et al, 1991;Kumar et al, 1992; 1992; Menon, 1992;Monem and Gadalla, 1991;Kuo and Jellum, 1994; and others.…”

Section: Laboratory Evaluationssupporting

confidence: 54%

Iron oxide-impregnated filter paper (Pi test): II. A review of its application

Menon

Chien

Chardon³

1996

Nutr Cycl Agroecosyst

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“…The NaOH reagent used to measure BAP extracts inorganic P from the fraction termed non-apatite inorganic P, representing phosphate associated mainly with Fe and Al hydrous oxides (Williams et al 1976a), but does not measure potentially bioavailable organic P. The subsequent HCl-P fraction mainly contains apatite, a mineral of calcium phosphate that is non-bioavailable, i.e., not assimilated by algal cultures (Williams et al 1980). Because the BAP procedure makes use of a more dilute (0.1 N) NaOH reagent than the 1.0 N NaOH used to extract the non-apatite fraction (Williams et al 1980), our subsequent HCl-extractable fraction contains some non-apatite as well as apatite inorganic P. However, the 0.1 N NaOH-extractable inorganic P more closely represents the amount of bioavailable inorganic P (Williams et al 1980;Dorich et al 1985), typically about 70% of the non-apatite inorganic P. The use of NaOH-extractable P as a measure of BAP gives amounts of BAP comparable to amounts obtained by procedures based on bioassays (Williams et al 1980;Dorich et al 1985;Sharpley et al 1991), or sorption to resins (Armstrong et al 1979;Huettl et al 1979;Hanna 1989), or Fe(III)-coated surfaces (Lin et al 1991;Sharpley 1993;Sharpley et al 1995;Fang et al 2005). In addition, Williams et al (1980) showed that uptake of sediment P by algal cultures removed inorganic P from the non-apatite inorganic P fraction, the fraction partially extracted by 0.1 N NaOH.…”

Section: Sedimentmentioning

confidence: 89%

Characteristics and Influence of Phosphorus Accumulated in the Bed Sediments of a Stream Located in an Agricultural Watershed

et al. 2008

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We investigated the accumulation and influence of bioavailable P (BAP) in sediments of a stream located in an agricultural area of the Lake Mendota watershed in Wisconsin, USA. During hydrologic events, the stream carried high concentrations of suspended sediment (up to 250 mg/l) and BAP (up to 2.5 mg/l). Bed sediments were highly enriched in BAP, as inventories of BAP in the top 10 cm of sediment ranged from 143 to 14,500 lg P/cm 2 . Space variations in BAP inventories were related to site-specific hydrodynamics and geochemical factors, including iron (Fe; r 2 = 0.71) and aluminum (Al; r 2 = 0.54) concentrations. Most sites behaved as potential sinks for dissolved reactive phosphate during hydrologic events and potential sources during base-flow periods. Through the combination of site-specific factors and geochemical controls, Dorn Creek modifies the amount, timing, and composition of P delivered from the watershed to downstream sites and water bodies.

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“…The values of reversibly adsorbed P determined by the iron oxide method have been found to correlate well with the amounts of P taken up by plants in a wide range of soil types (Lin et al, 1991;Menon et al, 1989a,b,c;YliHalla, 1990YliHalla, , 1991. Iron oxide paper strips have been also used for the extraction of P from stationary soil by embedding them in water saturated soils (Menon et al, 1990).…”

Section: Introductionmentioning

confidence: 91%

A simple diffusion test for soil phosphorus availability

Saarela¹

1992

Plant Soil

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The availability of phosphorus to plants was estimated by a new method based on the diffusion of P from a thin layer of water-saturated stationary soil to a disc of iron oxide coated filter paper. Twenty-one acid Finnish soil samples were tested using four modifications of the method which differed in the duration of the diffusion time and in the thickness of the soil layer. The new diffusion tests were compared with other soil P testing methods and evaluated as indicators of the availability of P to pot-grown barley and oats. Close linear correlations were found between the initial (18 or 42 h) P diffusion rate and the water extractable P contents determined at the extraction ratios of 1 : 10 and 1 : 60, respectively (r = 0.97-0.99). The amounts of P obtained by the new method were small when the diffusion time was short, but after prolonged diffusion (1 week) the test values were close to the amounts of P taken up by plants. The relationships of plant yield and P uptake with soil P test values were affected by soil acidity. Although the original soil P test values were significantly correlated, the accuracy of all methods drastically improved when the interfering effect of soil acidity was taken into account using a simple pH-correction model. The correlation coefficients (r) between the test values of diffusible P in soil and the uptake of P by plants increased up to 0.97.

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The use of iron oxide-impregnated filter paper for the extraction of available phosphorus from Taiwan soils

Cited by 56 publications

References 12 publications

Iron oxide-impregnated filter paper (Pi test): II. A review of its application

Iron oxide-impregnated filter paper (Pi test): II. A review of its application

Characteristics and Influence of Phosphorus Accumulated in the Bed Sediments of a Stream Located in an Agricultural Watershed

A simple diffusion test for soil phosphorus availability

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