نوع مقاله: پژوهشی
نویسنده
عضو هیأت علمی دانشگاه آزاد اسلامی واحد میانه
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
The variability of phosphorus concentration in soil solution as adsorption point of view by different minerals could be use for phosphorus recommendation. Identity of phosphorus adsorption on mineral surfaces could be studied by different equations, which their suitability depends on the soil characteristics and the aim of research. But the main concept is based on to equilibrate the soils with electrolyte solution containing different phosphorus concentration in a distinct time and temperature. In this study, three calcareous soil samples (with 7, 14 and 21 percentages CaCO3), fine grinded (<1mm diameter) were equilibrated with five concatenations (0, 12.5, 25, 50 and 75 µgrP/ml) which prepared from K2H2PO4 in 0.01 molar CaCl2. The linear types of Froundlich and Longmuir equations were fitted with high probability (p<0.01) and were used for interpretation phenomena by three soils. The Froundlich equation had higher correlation coefficient. The maximum adsorption values (b) of Longmuir equation for Karaj, Kordamir and Aderan soil series were 65.74, 74.2 and 75. 2, and the energy constant (k) were 2.95, 3.49 and 0.43, respectively. The samples were linear to concentration value (C) as high as 0.75, 0.73 and 0.29 mg/l for Karaj, Kordami, and Aderan soil series, respectively.
کلیدواژهها [English]
1- سالارالدینی، ع. و مجتهدی، م. 1362. اصول تغذیه گیاه، جلد اول. جنبه های بنیادی، انتشارات دانشگاه تهران.
2. Asher, C.J, and J.F. Loneragan, 1967. Response of plants to phosphate concentration in solution culture. II.Rate of phosphate absorption and growth.Soil.Sci.103:311-318.
3. Barrow. N. J. and T. C. Shaw. 1975 a. The slow reactions between soil and anions: 2. Effects of time and temperature on the decrease in phosphate concentration in soil solution. Soil Sci.119:167-177.
4. Barrow, N. J., and T. C. Shaw. 1975 b. Sodium bicarbonate as an extractant for soil phosphate 1. Separation of the factors affecting the amount of phosphate displaced from soil from those affecting secondary adsorption. Geoderma. 16:91-107.
5. Barrow, N. J., and T. C. Shaw. 1975 c. The slow reaction between soil and anions. 5. Effects of period of prior contact on the desorption of phosphate from soils. Soil. Sci, 119. 311- 320.
6. Barrow, N. J., and T. C. Shaw. 1975. The slow reaction between soil and anions. 2. Effect of time and temperature on the decrease in phosphate concentration in the soil solution. Soil Sci. 119: 167-177.
7. Beckwith, R. S. 1964. Sorbet phosphate at standard supernatant concentration as an estimate of phosphorus needs of soils. Aust. J. Exp. Ayr. and An. Hus. 5: 52 – 58.
8. Bell. L. C. and C. A. Black. 1970. Crystalline phosphate proceed by interaction of ortho- phosphate fertilizers with slightly acid and alkaline soils. Soil. Soc. Am. Proc. 34: 735 – 740.
9. Bohn, H. L., and B. L. Mc Neal. G. A. O. Connor. 1979. Soil Chemistry. John. Wily and Sons. Publication.
10. Bowman, R. A. and S. R. Olsen, 1985. Assessment of phosphorus buffering capacity .1. Laboratory methods. Soil Sci. 140: 287 – 291.
11. Fox, R. L., and E. J. Kamprath. 1970. Phosphate sorption isotherm for evaluting the phosphate requirements of soil. Soil Sci. Soc. Am. Proc. 34: 902 – 907.
12. Holford, I. C. R., and G. Mattingly. 1975. The high and low – energy phosphate absorbing surface in calcareous soil. J. Soil. Sci. 26: 407 – 417.
13. Hsu, P. H. and D. A. Rennie, 1962. Reaction of phosphate in aluminum systems. I. Adsorption of phosphate by x– ray amorphous aluminum hydroxide. Can. J. Soil. Sci. 42: 197– 209.
14. Humphreys. F. R. and W. L. Pritchett. 1970. Phosphorus adsorption and movement in some sandy forest soils soil. Soil. Soc. Am. Proc. 35: 495 – 500.
15. Khasawneh , F. E , E . C . Sample, and E. J. Kamprath. 1980. The role of phosphorus in agriculture. P. 265– 360. Pub. (ASA – CSSA – SSSA.). 667. South Sego Road, Madison Wisconsin U.S.A. (ISBN: 0 – 89118 – 062 – 1)
16. Kuo, S. 1990. Phosphorus adsorption implication on phosphate soil test and uptake by corn. Soil Sci. Am. J. 45: 131 – 135.
17. Kuo, S., and E. G. Lotse. 1972. Kinetics of phosphate adsorption by calcium carbonate and Ca -kaolinit . Soil Sic. Soc. Am. Proc. 36: 725.
18. Kuo, S. and E. G. Lotse. 1974. Kinetics of phosphate adsorption and desorption by hematite and gibbsite Soil Sci. 119: 400 – 406.
19. Larsen, S. 1967. Soil phosphorus. Adv. Agro. 19: 151 – 210.
20. Murman, R. P. and M. Peech. 1969. Relative significance of labile and crystalline phosphates in Soil. Soil. Sci. 107: 299
21. Olsen, S. R. and F. S. Watanabe. 1957. A method to determine a phosphorus adsorption maximum of soils as measured by the Longmuir isotherm. Soil. Sci. Soc. Am. Proc. 21: 144 – 149.
22. Rajan, S. S. S., and R. L. Fox. 1975. Phosphate adsorption by soils. II. Reaction in tropical acid soils. Soil. Sc. Am. Proc. 39: 846 – 851.
23. Rennie, D. A. and R. B. Mc Kercher. 1959. Adsorption of phosphorus by four Saskatchewan soils. Can. J. Soil Sci. 39: 64 – 75.
24. Talibudeen. P. 1958. Isotopically exchangeable phosphorus in soils. III. The fractionation of soil phosphorus. J. Soil Sci. 9: 120 – 129.
25. Vaidyanathan, L. V., and O. Talibudeen. 1970. Rate processes in the desorption of phosphate from soils by ion – exchange resins. J. Soil Sci. 21: 173 – 183.
26. Withee, L. V., and Jr. Roscoe Ellis. 1965. Chang of phosphate potentials of calcareous soils on adding phosphorus. Soil. Sci. Soc. Am. Proc. 29: 511 – 514.
27. Williams, C. H. 1971. Reaction of surface applied super phosphate with soil. II. Movement of the phosphorus and sulphur in to the soil. Aust. J. Soil Res. 9: 95–106.
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