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Nutrient Cycling in Agroecosystems

, Volume 77, Issue 3, pp 283–292 | Cite as

The Olsen P method as an agronomic and environmental test for predicting phosphate release from acid soils

  • Maria do Carmo Horta
  • José Torrent
Original Paper

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.

Keywords

Acid soils Eutrophication Olsen P Phosphate Phosphorus Soil P test 

Notes

Acknowledgements

The senior author acknowledges award of a grant from PRODEP III (2/2001) supported by the Portuguese government and the European Union.

References

  1. Analytical Software (2000) Statistix 7 User’s Manual. Analytical Software, Tallahassee, FLGoogle Scholar
  2. 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 34:2659–2681CrossRefGoogle Scholar
  3. 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 16:91–107CrossRefGoogle Scholar
  4. CoHort Software (1995) Coplot manual. CoHort Software, Minneapolis, MNGoogle Scholar
  5. 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 250:215–224CrossRefGoogle Scholar
  6. Delgado A (1996) Liberación de fosfato en suelos sobrefertilizados de la Union Europea. PhD Thesis, Universidad de Córdoba, Córdoba, Spain (in Spanish)Google Scholar
  7. Delgado A, Torrent J (1997) Phosphate-rich soils in the European Union: estimating total plant-available phosphorus. Eur J Agron 6:205–214CrossRefGoogle Scholar
  8. Fao, Isric, Isss (1998) World Reference Base for Soil Resources. Fao, RomeGoogle Scholar
  9. Fox RL, Kamprath EJ (1970) Phosphate sorption isotherms for evaluating the phosphate requirements of soils. Soil Sci Soc Am Proc 34:903–906CrossRefGoogle Scholar
  10. 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 80–124Google Scholar
  11. Heckrath G, Brookes PC, Poulton PR, Goulding KWT (1995) Phosphorus leaching from soils containing different phosphorus concentrations in the Broadbalk experiment. J Environ Qual 24:904–910Google Scholar
  12. Hesketh N, Brookes PC (2000) Development of an indicator for risk of phosphorus leaching. J Environ Qual 29:105–110Google Scholar
  13. 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 32:2325–2345CrossRefGoogle Scholar
  14. 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 133:219–226CrossRefGoogle Scholar
  15. 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 145–180Google Scholar
  16. Matar A, Torrent J, Ryan J (1992) Soil and fertilizer phosphorus and crop responses in the dryland Mediterranean zone. Adv Soil Sci 18:82–146Google Scholar
  17. McDowell R, Sharpley AN (2001) Aproximating phosphorus release from soils to surface runoff and subsurface drainage. J Environ Qual 30:508–520Google Scholar
  18. McDowell R, Sharpley AN, Brookes P, Poulton P (2001) Relationship between soil test phosphorus and phosphorus release to solution. Soil Sci 166:137–149CrossRefGoogle Scholar
  19. Mehra OP, Jackson ML (1960) Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate. Clays Clay Miner 7:317–327CrossRefGoogle Scholar
  20. 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 53:110–115CrossRefGoogle Scholar
  21. Murphy J, Riley J (1962) A modified single solution method for the determination of phosphate in natural waters. Anal Chim Acta 27:31–36CrossRefGoogle Scholar
  22. Nanzyo M, Shibata Y, Nobuko W (2002) Complete contact of Brassica roots with phosphorus fertilizer in a phosphorus-deficient soil. Soil Sci Plant Nutr 48:847–853Google Scholar
  23. Newman EI (1997) Phosphorus balance of contrasting farming systems, past and present Can food production be sustainable? J Appl Ecol 34:1334–1347CrossRefGoogle Scholar
  24. 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.Google Scholar
  25. 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 403–430Google Scholar
  26. Schwertmann U (1964) Differenzierung der Eisenoxide des Bodens durch Extraktion mit Ammoniumoxalat-Lösung. Z Pflanzenernähr Düng Bodenkd 105:194–202CrossRefGoogle Scholar
  27. 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 43–58Google Scholar
  28. Sharpley AN (1995) Dependence of runoff phosphorus on extractable soil phosphorus. J Environ Qual 24:920–926Google Scholar
  29. Sharpley AN, Ahuja LR (1983) A diffusion interpretation of soil phosphorus desorption. Soil Sci 135:322–326CrossRefGoogle Scholar
  30. Sharpley AN, Tunney H (2000) Phosphorus research strategies to meet agricultural and environmental challenges of the 21st century. J Environ Qual 29:176–181Google Scholar
  31. Sharpley AN, Ahuja LR, Yamamoto M, Menzel RG (1981) The kinetics of phosphorus desorption from soil. Soil Sci Soc Am J 47:462–467CrossRefGoogle Scholar
  32. Sharpley AN, Kleinman PJA, McDowell RW, Gitau M, Bryant RB (2002) Modelling phosphorus transport in agricultural watersheds: Processes and possibilities. J Soil Water Conserv 57:425–439Google Scholar
  33. 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 23:437–451Google Scholar
  34. Soil Survey Staff (1992) Soil survey laboratory methods manual. Soil Survey Investigations Report 42. USDA–SCS, National Soil Survey Center, Lincoln, NEGoogle Scholar
  35. Torrent J, Delgado A (2001) Using phosphorus concentration in the soil solution to predict phosphorus desorption to water. J Environ Qual 30:1829–1835CrossRefGoogle Scholar
  36. 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 177–203Google Scholar
  37. van der Zee SEATM, Fokking LGJ, van Riemsdijk WH (1987) A new technique for assessment of reversibly adsorbed phosphate. Soil Sci Soc Am J 51:599–604CrossRefGoogle Scholar
  38. van der Zee SEATM, van Riemsdijk WH (1988) Model for long-term phosphate reaction kinetics in soil. J Environ Qual 17:35–41Google Scholar
  39. van Wesemael JCh (1955) De bepaling van het calciumcarbonaat-gehalte van gronden. Chem Weekblad 51:35–36Google Scholar
  40. 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 53:431–438CrossRefGoogle Scholar
  41. Zasosky RJ, Burau RG (1977) A rapid nitric–perchloric acid digestion method for multielement tissue analysis. Commun Soil Sci Plant Anal 8:425–436CrossRefGoogle Scholar
  42. Zhang GL, Burghardt W, Yang JL (2005) Chemical criteria to assess risk of phosphorus leaching from urban soils. Pedosphere 15:72–77Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  1. 1.Escola Superior AgráriaQuinta Sra.MérculesPortugal
  2. 2.Departamento de Ciencias y Recursos Agrícolas y ForestalesUniversidad de CórdobaCordobaSpain

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