Fig. 1 Second order kinetic plots for changes in available P with time showing the effect of Fed/ACCE ratio on P retention by calcareous soils with different rate constants: 
2 Kell 9
; 
10 Bea 1
; 
15 Kon 5
Fig. 1 Second order kinetic plots for changes in available P with time showing the effect of Fed/ACCE ratio on P retention by calcareous soils with different rate constants: 2 Kell 9
; 10 Bea 1
; 15 Kon 5