Effects of ph and solvent/soil ratio on extraction of phosphorus from soils by various extracting solutions

References

• Benjaminsen , J. 1995 . Determination of soil P by various acetate buffer solutions as solvents . Tidsskr. Planteavl. , 59 : 670 – 683 . (Da.e.)
   Google Scholar
• Bittel , R. 1956 . Etude de la solubilization du P du sol paz les ions H+ . Sixieme Congres de la Science du Soil. (Paris) , 49 : 747 – 752 .
   Google Scholar
• Blanchet , R. 1959 . The energy of adsorption of mineral ions by soil colloids, and the mineral nutrition of plants . Ann. Agron. Paris. , 10 : 5 – 52 . 125 – 153 .
   Google Scholar
• Blanchar , R.W. and Caldwell , A.G. 1964 . Phosphorus uptake by plants and readily extractable phosphorus in soils . Agron. J. , 56 : 218 – 221 .
   Google Scholar
• Chang , S.C. and Jackson , M.L. 1957 . Fractionation of soil phosphorus . Soil Sci. , 84 : 133 – 144 .
   Google Scholar
• Dunbar , A.D. and Baker , D.E . 1965 . Use of isotopic dilution in a study of inorganic P fractions from different soils . Soil Sci. Soc. Amer. Proc. , 29 : 259 – 262 .
   Google Scholar
• Edwards , G.H. 1956 . Changes in the solvent‐soil ratio and the available phosphorus figure in soil analysis . Agric. Progr. , 31 : 45 – 55 .
   Google Scholar
• Egner , H. 1956 . “ Necessary requirements of methods suitable for mass soil analysis ” . In OEEC Project 156. The Organization and Rationalization of Soil Analysis , 193 – 206 . Paris , , France : The European Productivity Agency of the Organizations for European Economic Co‐operation .
   Google Scholar
• Fitts , J.W. 1956 . Soil tests compared with field, greenhouse and laboratory results . North Carolina Agri. Exp. Stn. Tech. Bull. , : 121
   Google Scholar
• Huffman , E.O. 1962 . Reactions of phosphate in soils: Recent research by TVA . Proc. Fert.Soc. (London) , N : 71
   Google Scholar
• Huffman , E.O. 1968 . Behaviour of fertilizer phosphates . 9th International Congress Soil Science Transactions (Adelaide, Australia) , 11 : 745 – 754 .
   Google Scholar
• Kamprath , E.J. and Watson , M.E. 1980 . “ Conventional soil and tissue tests for assessing the phosphorus status of soils ” . In The Role of Phosphorus in Agriculture , 433 – 469 . Madison , WI : American Society of Agronomy .
   Google Scholar
• Puri , A.N. and Swarnakar , R.D. 1968 . Geoderma. , 2 : 85 – 93 .
   Web of Science ®Google Scholar
• Randall , G.W. and Grave , J. 1971 . Effect of Soil: Bray no 1 ratios on the amount of phosphorus extracted from calcareous Minesota soils . Soil Sci. Soc. Amer. Proc. , 35 : 112 – 114 .
   Web of Science ®Google Scholar
• Sample , E.C. , Soper , R.J. and Racz , G.J. 1980 . “ Reactions of phosphate fertilizers in soils ” . In The Role of Phosphorus in Agriculture , 263 – 310 . Madison , WI : American Society of Agronomy .
   Google Scholar
• Simonis , A.D. 1970 . Application of an ascorbic acid‐stannous chloride composition reducing agent for developing stable molybdenum blue colour in the determination of phosphorus , Aberdeen , , Scotland : Department of Soil Science. University of Aberdeen .
   Google Scholar
• Simonis , A.D. 1972 . Factors affecting the extraction of phosphorus and potassium by extracting solutions , Departmental Report No 8 Aberdeen , , Scotland : Department of Soil Science, University of Aberdeen .
   Google Scholar
• Simonis , A.D. 1973 . Effects of temperature and solvent/soil ratio on the extraction of phosphorus and potassium , Aberdeen , , Scotland : University of Aberdeen . Ph.D. Thesis
   Google Scholar
• Smith , F.W. , Ellis , B.G. and Grove , J. 1957 . Use of acid‐fluoride solutions for the extraction of available phosphorus in calcareous soils and in soils to which rock phosphate has been added . Soil Sci. Soc. Amer. Proc. , 21 : 120 – 129 .
   Google Scholar
• Stelly , M. and Ricaud , R. 1960 . Chemical extractants as a diagnostic aid in determining levels of available soil phosphorus . Transactions 7th International Congress of Soil Science , 3 : 60 – 71 .
   Google Scholar
• Talibudeen , P. 1957 . Isotopically exchangeable phosphorus in soils. III. The fractionation of soil phosporus . J. Soil. Sci. , 9 : 120 – 129 .
   Web of Science ®Google Scholar
• Terman , G.L. 1971 . Phosphate fertilizer sources: Agronomic effectiveness in relation of chemical and physical properties . Proc. Fert. Soc. (London) ,
   Google Scholar
• Thomas , G.W. and Peaslee , D.E. 1973 . “ Testing soils for phosphorus ” . In Soil Testing and Plant analysis , Edited by: Walsh , L.M. and Beaton , J.D. 115 – 132 . Madison , WI : Soil Science Society of America .
   Google Scholar
• Thompson , L.M. 1957 . Soils and Soil Fertility , New York , NY : McGraw‐Hill Book Company, Inc. .
   Google Scholar