89
Table 4-12 Response Surface Equations of Bray 2
Extractable P Levels After the Second
Cropping Period.
Correlation
Response Surface Equation Coefficient
Clover Applied (0 g/kg)
Bray P = 9.28 + .28 P .85 Fe .04 P Fe r2 = .96
Clover Applied (1.58 g/kg)
Bray P = 16.99 + .24 P 2.13 Fe .02 P Fe r2 = .97
Clover Applied (3.15 g/kg)
Bray P = 23.19 + .22 P 2.62 Fe .02 P Fe r2 = .96