Abstract
Polyphosphate hydrolysis was studied in three surface samples and one subsurface sample of Quebec soil treated with alfalfa residues (44.8 t ha−1) and farmyard manure (FYM; 44.8 t ha−1); and in two acid soil samples treated with CaCO3 (12.5 t ha−1). The polyphosphates used were Na4P2O7. 10H2O (NaPP) and PolyN (a triammonium pyrophosphate-orthophosphate mixture). Each polyphosphate was added at a rate of 1.00g P kg−1 soil.
Addition of alfalfa residues promoted polyphosphate hyrolysis of both NaPP and PolyN through reduced polyphosphate sorption and increasing pyrophosphatase activity. Application of FYM increased polyphosphate hydrolysis in Uplands topsoil and retarded hydrolysis in the other soils. Hydrolysis was probably reduced because of orthophosphate (OP) introduced with the FYM. Added CaCO3 accelerated polyphosphate hydrolysis in an acid topsoil sample through reduced sorption, but slowed hydrolysis in the subsoil sample, due to a reduction in enzyme activity.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Blanchar R W and Hossner L R 1969 Hydrolysis and sorption reactions of orthophosphate, pyrophosphate, tripolyphosphate, and trimetaphosphateanions added to Elliot soil. Soil Sci. Soc. Am. Proc. 33, 141–144.
Canada Soil Survey Committee Sub-Committee on soil Classification 1978 Can. Dep. Agric. Publ. 1646 Supply and Services Canada Ottawa, Ont. 164 pp.
Chang C and Racz G J 1977 Effects of temperature and phosphate concentration on rate of sodium pyrophosphate and sodium tripolyphosphate hydrolysis in soil. Can. J. Soil Sci. 57, 271–278.
Dick W A and Tabatabai M A 1978 Inorganic pyrophosphatase activity of soils. Soil Biol. Biochem. 10, 59–65.
Douglas L A Riaz-Hamadani A and Field J J B 1976 Assay of pyrophosphatase activity in soil. Soil Biol. Biochem. 8, 391–393.
Gilliam J W and Sample E C 1968 Hydrolysis of pyrophosphate in soils: pH and biological effects. Soil Sci. 106, 352–357.
Hashimoto I, Hughes J D and Philen O D Jr. 1969 Reactions of triammonium pyrophosphate with soils and soil minerals. Soil Sci. Soc. Am. Proc. 33, 401–405.
Hossner L R and Melton J R 1970 Pyrophosphate hydrolysis of ammonium, calcium and calcium amonium pyrophosphates in selected Texas soils. Soil Sci. Soc. Am. Proc. 34, 801–804.
Mnkeni P N S and MacKenzie A F 1985 Retention of ortho-and polyphosphates in some Quebec soils as affected by added organic residues and calcium carbonate. Can. J. Soil Sci. 65, 575–585.
Racz G J and Savant N K 1972 Pyrophosphate hydrolysis in soil as influenced by flooding and fixation. Soil Sci. Soc. Am. Proc. 36, 678–682.
Savant N K and Racz G J 1971 Effect of added orthophosphate on pyrophosphate hydrolysis in soil Plant and Soil 30, 719–721.
Sutton C D and Larsen S 1964 Pyrophosphate as a source of phosphorus for plants. Soil Sci. 97, 196–201.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mnkeni, P.N.S., Mackenzie, A.F. Effects of added organic residues and calcium carbonate on polyphosphate hydrolysis in four Quebec soils. Plant Soil 104, 163–167 (1987). https://doi.org/10.1007/BF02372528
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02372528