Deterministic frontier | ||
Inputs/Attributes | Coefficient | Std. err. |
Quantity of irrigation water (m3/ha) | 0.0074 | 0.0055 |
Wheat area (Ha) | 0.0277 | (0.0106)*** |
N (kg/Ha) | 0.1225 | (0.0139) *** |
P (kg/Ha) | 0.0756 | (0.0085)*** |
seed (kg/Ha) | 0.1344 | (0.0297)*** |
Labor (hour) | 0.0702 | (0.0166)*** |
Constant | 6.6405 | (0.1400)*** |
Risk function | ||
Soil salinity (0 = Low and 1 = High) | 0.0934 | (0.0305)*** |
Wheat area (Ha) | −0.0003 | 0.0014 |
N (kg/Ha) | −0.0002 | (0.0001)* |
P (kg/Ha) | 0.0019 | 0.0034 |
Wheat variety (0 = Local and 1 = Improved) | −0.9128 | (0.4970)* |
Labor (hour) | −0.0004 | 0.0037 |
Surface Supplemental irrigation (0 = No and 1 = Yes) | 0.0463 | (0.0261)* |
Improved supplemental irrigation (0 = No and 1 = Yes) | −0.1378 | (0.0400)*** |
Constant | −5.4658 | (0.4840)*** |
Mean function of inefficiency | ||
Farmer age (year) | −0.0007 | 0.0045 |
years of schooling (year) | −0.0786 | (0.0155)*** |
Farm size (Ha) | −0.0030 | 0.0094 |
Soil salinity (0 = Low and 1 = High) | 0.6098 | (0.2246)*** |
Wheat variety (0,1) | −0.0152 | 0.1672 |
Surface Supplemental irrigation (0 = No and 1 = Yes) | −0.3646 | (0.1999)* |
Improved supplemental irrigation (0 = No and 1 = Yes) | −0.9111 | (0.3573)*** |
Constant | −2.4218 | (0.2888)*** |
Log likelihood | 276.8000 |