pH response figures for Precision Farming Profitabilty
Coefficient	Corn	Soy
Constant	-0.8287	-0.751
Linear	0.5318	0.5003
Quadratic	-0.0391	-0.0367
Plateau	0.9796	0.954041
Critical1	6.8	6.8
Critical2	7.5	7.5
Decline	0.01	0.01
Source: Bongiovanni Thesis, 1998