Extraction Of Aluminum By Ammonium Acetate And Chloride Salts In Soils Of Niger Delta Of Nigeria

Abstract

The extractability of exchangeable and reactive aluminum by 0.5M KCL, IM NH4OAc,) 0.33 LaCI3 and 0.5M CuCI2 from surface and sub-surface soils of Niger Delta of Nigeria decreased with the order of effectiveness as shown:Cu2+>La3+>NH+4>K+. The amounts of CuCI2-AI were significantly higher (P<0.01) than AI removed by KCI, NH4OAC and LaCl3 indicating that CuCI2 removed presumably readily exchangeable AI, and non-readily exchangeable, more soluble metastable plus amorphous AI (01)3, organically bound-AI and hydroxy-AI polymers which constitute “Potentially reactive aluminum pool” in soil. Based on mean values of pH (4.7), organic carbon (1.00%) and percent aluminum saturation (76%) for the soils, LaCI3 extractable AI can be used for prediction of lime requirement for the soils.

Journal of Applied Chemistry and Agricultural Research Vol. 5 1998: pp. 68-74