International Journal of Agricultural Research1816-48972152-2553Academic Journals Inc.10.3923/ijar.2012.388.397Z. AfsarMohammad HossainMohammad Enayet 8201278Phosphate sorption equations have been widely used to characterize soils with
respect to their phosphorus requirements (Preq). For the sorption
study, the soils were equilibrated with 0.01 M CaCl2 solution containing
graded concentrations of phosphate (0, 1, 10, 25, 50, 100 and 150 mg P L-1).
The Preq values of four calcareous soils were determined from the
Langmuir, Freundlich and Temkin equations. The Langmuir equation was best fitted
to the P sorption data. Among the four soil series, the Ghior soil series occupying
the lowest position of catena sorbed the highest amount of phosphate. The amounts
of sorbed P maintaining 0.2 mg P L-1 in soil solution ranged from
14.14 to 33.56, 27.99 to 45.80 and 16.16 to 51.72 mg kg-1 soil which
were derived from the respective Langmuir, Freundlich and Temkin equations.
Preq values derived from the Freundlich and the Langmuir equations
were negatively correlated with Olsen-P content of the soil (r >-0.975, p<0.05).
Again, Preq values determined from the Freundlich equation were positively
correlated with percent clay content (r >0.901, p<0.05) of the soil. Phosphate
was sorbed by the soils in the following order: Ghior>Ishurdi>Gopalpur>Sara
soil series. However, based on their Preq values, the soils can be
arranged in the following order: Ishurdi>Ghior>Gopalpur>Sara soil series.
To maintain a desired P concentration in the soil solution, the Ishurdi soil
will be required to supply more P than others.]]>Afif, E., A. Matar and J. Torrent,199357756760Afsar, M.Z., S. Hoque and K.T. Osman,201279199Barber, S.A.,19952nd Edn.,Barrow, N.J.,197829447462Barrow, N.J.,198435283297Beckwith, R.S.,196455258Bertrand, I., R.E. Holloway, R.D. Armstrong and M.J. Mclaughlin,2003416176Bouyoucos, G.J.,192723343353D'Angelo, E.M., M.V. Vandiviere, W.O. Thom and F. Sikora,20033210821088Daly, K., D. Jeffrey and H. Tunney,2001171220Dodor, D.E. and K. Oya,200031277288Dubus, I.G. and T. Becquer,200139403414Fox, R.L.,19811981pp: 223-239pp: 223-239Fox, R.L. and E.J. Kamprath,197034902907Freundlich, H.,1926pp: 114-122pp: 114-122Gichangi, E.M., P.N.S. Mnkeni and P. Muchaonyerwa,2008109139149Holford, I.C.R.,197940773781Hossain, M.E., S. Hoque and K.T. Osman,20112011Hue, N.V. and R.L. Fox,201041133143IUSS Working Group WRB.,2006Jackson, M.L.,19732nd Edn.,Johnston, M.A., N. Miles and G.R. Thibaud,199181721Juo, A.S.R. and R.L. Fox,1977124370376Kamprath, E.J.,1967592527Kamprath, E.J. and M.E. Watson,19801980pp: 433-469pp: 433-469Langmuir, I.,19184013611403Leclerc, M.L., M.C. Nolin, D. Cluis and R.R. Simard,2001817183Linquist, B.A., P.W. Singleton, K.G. Cassman and K. Keane,19961844755Majumdar, B., M.S. Venkatesh, K. Kumar and Patiram,2004522934Mehadi, A.A. and R.W. Taylor,198852627632Moazed, H., Y. Hoseini, A.A. Naseri and F. Abbasi,20105131139Murphy, J. and J.P. Riley,1962273136Naseri, A.A., Y. Hoseini, H. Moazed, F. Abbasi and H.M.V. Samani,20104226231Pierzynski, G.M., J.T. Sims and G.F. Vance,2005Pote, D.H., T.C. Daniel, D.J. Nichols, A.N. Sharpley, P.A. Moore, D.M. jr. Miller and D.R. Edwards,199960855859Sharpley, A.N., L.R. Ahuja, M. Yamamoto and R.G. Menzel,198145493496Solis, P. and J. Torrent,198953456459Temkin, M.I. and V. Pyzhev,194012327356USEPA,19961996Vaananen, R., J. Hristov, N. Tanskanen, H. Harlikachen, M. Niemien and H. Ilvesniemi,200813553567Vander Zaag, P., R.L. Fox, R.S. Delapena, W.M. Laughlin, A. Ryskamp, S. Villa-Gracia and D.T. Westermann,197956153160Villapando, R.R. and D.A. Graetz,200165331339Zhou, M. and Y. Li,20016514041412Samadi, A.,20068251264Toor, G.S., G.S. Bahl and A.C. Vig,199745719723Mead, J.A.,198119333342Olsen, S.R., C.V. Cole, F.S. Watanabe and L.A. Dean,1954Pages: 19Pages: 19