Table 2. Simple linear correlations (r) between selected soil P tests and RP concentrations at 5 and 240 minute equilibration times for 200:1 solution:soil ratio in three different solutions.
 
 
   
Soil P Test
  
Solution
Minutes
NaHCO3-Pi
Water-Pi
Bio-Pi
 
 
------------------------------ r -----------------------------
RO
5
0.76
0.61
0.76
240
0.78
0.55
0.76
         
IRR
5
0.85
0.77
0.82
240
0.84
0.77
0.82
         
CaCl2
5
0.81
0.85
0.83
240
0.92
0.74
0.90
         
         
         

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