Abstract
The role of soil phosphorus (P) in the eutrophication of fresh water systems is well established. It is crucial therefore to assess the potential loss of P from soil in the various scenarios where soil can come into contact with water. To date, such assessment has often been based on soil P tests that are used for agronomic purposes (e.g. fertilizer recommendations). The purpose of this work was to examine the usefulness of one such test (viz. the Olsen test, which is based on extraction with bicarbonate) for predicting not only the amount of soil P available to plants, but also that which can be desorbed to water in a group of 32 Portuguese soils, of which 29 were acid and 3 calcareous. To this end, we (i) assessed the total amount of phytoavailable P in soil by successively pot-cropping Chinese cabbage, buckwheat and rye; and (ii) measured the amount of phosphate-P desorbed to a dilute electrolyte mimicking fresh water over periods of up to 218 days at soil:solution ratios of 1:100, 1:1000 and 1:10000. Total phytoavailable P and Olsen P were found to bear a quadratic relationship, with Olsen’s extractant underestimating the content in phytoavailable P of soils with high Olsen P contents relatively to soils with low contents. The “change point” at which phytoavailable P began to increase rapidly per unit change in Olsen P was 53 mg Olsen P kg−1 soil. For the acid soils, a significant quadratic relationship was found between the amount of P desorbed to water and Olsen P at the three soil:solution ratios studied. However, these relationships became less significant when only the soils with an Olsen P value of less than 50 mg kg−1 were considered. For the acid soils, the change point at which P input to water began to increase rapidly per unit change in Olsen P was 20, 61 and 57 mg kg−1 at the 1:100, 1:1000 and 1:10000 ratio, respectively. At comparable Olsen P values, the calcareous soils released more phosphate to water than the acid soils. On the basis of our results, we suggest the following environmental threshold values for Olsen P in acid soils: 20 mg kg−1 for P desorption scenarios where the soil:solution ratio is high (e.g. drainage water) and 50 mg kg−1 for desorption scenarios where the soil:solution ratio is low (e.g., runoff, water in reservoirs). Both values are higher than the agronomic threshold above which plants are well supplied with P.
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References
Analytical Software (2000) Statistix 7 User’s Manual. Analytical Software, Tallahassee, FL
Bah AR, Zaharah AR, Hussin MHA, Halimi MS (2003) Phosphorus status of amended soil as assessed by conventional and isotopic methods. Commun Soil Sci Plant Anal 34:2659–2681
Barrow NJ, Shaw TC (1976) Sodium bicarbonate as an extractant for soil phosphate, I. Separation of the factors affecting the amount of phosphate displaced from soil from those affecting secondary adsorption. Geoderma 16:91–107
CoHort Software (1995) Coplot manual. CoHort Software, Minneapolis, MN
Dechasa N, Schenk MK, Claassen N, Ateingrobe B (2003) Phosphorus efficiency of cabbage (Brassica oleraceae L. var. capitata), carrot (Daucus carota L) and potato (Solanum tuberosum L). Plant Soil 250:215–224
Delgado A (1996) Liberación de fosfato en suelos sobrefertilizados de la Union Europea. PhD Thesis, Universidad de Córdoba, Córdoba, Spain (in Spanish)
Delgado A, Torrent J (1997) Phosphate-rich soils in the European Union: estimating total plant-available phosphorus. Eur J Agron 6:205–214
Fao, Isric, Isss (1998) World Reference Base for Soil Resources. Fao, Rome
Fox RL, Kamprath EJ (1970) Phosphate sorption isotherms for evaluating the phosphate requirements of soils. Soil Sci Soc Am Proc 34:903–906
Golterman HL, Oude NT (1991) Eutrophication of lakes, rivers and coastal seas. In: Hutzinger O (eds), The Handbook of Environmental Chemistry, Vol. 5, Part A. Springer-Verlag, Berlin, pp 80–124
Heckrath G, Brookes PC, Poulton PR, Goulding KWT (1995) Phosphorus leaching from soils containing different phosphorus concentrations in the Broadbalk experiment. J Environ Qual 24:904–910
Hesketh N, Brookes PC (2000) Development of an indicator for risk of phosphorus leaching. J Environ Qual 29:105–110
Kleinman PJA, Sharpley AN, Garley K, Jarrel WM, Kuo S, Menon RG, Myers R, Reddy KR, Skogley EO (2001) Interlaboratory comparison of soil phosphorus extracted by various soil test methods. Commun Soil Sci Plant Anal 32:2325–2345
Lin TH, Ho SB, Houng KH (1991) The use of iron oxide-impregnated filter paper for the extraction of available phosphorus from Taiwan soils. Plant Soil 133:219–226
Maguire RO, Chardon WJ, Simard RR (2005) Assessing potential environmental impacts of soil phosphorus by soil testing. In: Sims JT, Sharpley AN (eds), Phosphorus: Agriculture and the Environment. ASA CSSA SSSA, Madison WI, pp 145–180
Matar A, Torrent J, Ryan J (1992) Soil and fertilizer phosphorus and crop responses in the dryland Mediterranean zone. Adv Soil Sci 18:82–146
McDowell R, Sharpley AN (2001) Aproximating phosphorus release from soils to surface runoff and subsurface drainage. J Environ Qual 30:508–520
McDowell R, Sharpley AN, Brookes P, Poulton P (2001) Relationship between soil test phosphorus and phosphorus release to solution. Soil Sci 166:137–149
Mehra OP, Jackson ML (1960) Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate. Clays Clay Miner 7:317–327
Menon RG, Hammond LL, Sissing HA (1988) Determination of plant-available phosphorus by the iron hydroxide-impregnated filter paper (Pi) soil test. Soil Sci Soc Am J 53:110–115
Murphy J, Riley J (1962) A modified single solution method for the determination of phosphate in natural waters. Anal Chim Acta 27:31–36
Nanzyo M, Shibata Y, Nobuko W (2002) Complete contact of Brassica roots with phosphorus fertilizer in a phosphorus-deficient soil. Soil Sci Plant Nutr 48:847–853
Newman EI (1997) Phosphorus balance of contrasting farming systems, past and present Can food production be sustainable? J Appl Ecol 34:1334–1347
Olsen S, Cole C, Watanabe F, Dean L (1954) Estimation of available phosphorus in soils by extraction with sodium bicarbonate. USDA Circular Nr 939, US Gov. Print. Office, Washington, D.C.
Olsen SR, Sommers LE (1982) Phosphorus. In: Page AL, et al (eds), Methods of Soil Analysis, Part 2, 2nd edn, Agron Monogr 9. ASA and ASSA, Madison WI, pp 403–430
Schwertmann U (1964) Differenzierung der Eisenoxide des Bodens durch Extraktion mit Ammoniumoxalat-Lösung. Z Pflanzenernähr Düng Bodenkd 105:194–202
Sibbesen E, Runge-Metzger A (1995) Phosphorus balance in European agriculture—Status and policy options. In: Tiessen H (eds), SCOPE 54: Phosphorus in the Global Environment. Transfers, Cycles and Management. John Wiley & Sons, New York, pp 43–58
Sharpley AN (1995) Dependence of runoff phosphorus on extractable soil phosphorus. J Environ Qual 24:920–926
Sharpley AN, Ahuja LR (1983) A diffusion interpretation of soil phosphorus desorption. Soil Sci 135:322–326
Sharpley AN, Tunney H (2000) Phosphorus research strategies to meet agricultural and environmental challenges of the 21st century. J Environ Qual 29:176–181
Sharpley AN, Ahuja LR, Yamamoto M, Menzel RG (1981) The kinetics of phosphorus desorption from soil. Soil Sci Soc Am J 47:462–467
Sharpley AN, Kleinman PJA, McDowell RW, Gitau M, Bryant RB (2002) Modelling phosphorus transport in agricultural watersheds: Processes and possibilities. J Soil Water Conserv 57:425–439
Sharpley AN, Chapra SC, Wedepohl R, Sims JT, Daniel TC, Reddy KR (1994) Managing agricultural phosphorus for protection of surface waters: Issues and options. J Environ Qual 23:437–451
Soil Survey Staff (1992) Soil survey laboratory methods manual. Soil Survey Investigations Report 42. USDA–SCS, National Soil Survey Center, Lincoln, NE
Torrent J, Delgado A (2001) Using phosphorus concentration in the soil solution to predict phosphorus desorption to water. J Environ Qual 30:1829–1835
Tunney H, Breeuwsma A, Withers PJA, Ehlert PAI (1998) Phosphorus fertilizer strategies: present and future. In: Tunney H, et al (eds), Phosphorus Loss from Soil to Water, Chp 8. CAB International, Wallingford UK, pp 177–203
van der Zee SEATM, Fokking LGJ, van Riemsdijk WH (1987) A new technique for assessment of reversibly adsorbed phosphate. Soil Sci Soc Am J 51:599–604
van der Zee SEATM, van Riemsdijk WH (1988) Model for long-term phosphate reaction kinetics in soil. J Environ Qual 17:35–41
van Wesemael JCh (1955) De bepaling van het calciumcarbonaat-gehalte van gronden. Chem Weekblad 51:35–36
Yli-Halla M, Hartikainen H, Vaatainen P (2002) Depletion of soil phosphorus as assessed by several indices of phosphorus supplying power. Eur J Soil Sci 53:431–438
Zasosky RJ, Burau RG (1977) A rapid nitric–perchloric acid digestion method for multielement tissue analysis. Commun Soil Sci Plant Anal 8:425–436
Zhang GL, Burghardt W, Yang JL (2005) Chemical criteria to assess risk of phosphorus leaching from urban soils. Pedosphere 15:72–77
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The senior author acknowledges award of a grant from PRODEP III (2/2001) supported by the Portuguese government and the European Union.
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Horta, M.d.C., Torrent, J. The Olsen P method as an agronomic and environmental test for predicting phosphate release from acid soils. Nutr Cycl Agroecosyst 77, 283–292 (2007). https://doi.org/10.1007/s10705-006-9066-2
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DOI: https://doi.org/10.1007/s10705-006-9066-2