Variable | Parameter | Coefficient | Standard error |
---|---|---|---|
Production frontier | |||
 Constant | \({\beta }_{0}\) | 5.343*** | 0.062 |
 \(\mathrm{lnLand}\) | \({\beta }_{1}\) | 0.127*** | 0.006 |
 \(\mathrm{lnLabor}\) | \({\beta }_{2}\) | 0.149** | 0.011 |
 \(\mathrm{lnFertilizer}\) | \({\beta }_{3}\) | 0.252** | 0.007 |
 \(\mathrm{lnSeed}\) | \({\beta }_{4}\) | 0.139*** | 0.005 |
Environmental variables | |||
 Constant | \({\delta }_{0}\) | − 3.543*** | 0.057 |
  Slope | \({\delta }_{1}\) | 0.601*** | 0.160 |
Variance parameters | |||
 Sigma-u | \({\sigma }_{u}\) | 0.124*** | 0.046 |
 Sigma-v | \({\sigma }_{v}\) | 0.025*** | 0.003 |
 Variance | \({\sigma }^{2}\) | 0.016*** | 0.005 |
 Lambda | \(\lambda \) | 4.961*** | 0.009 |
 Log likelihood function |  | − 677.523 |  |
Total number of observation | 360 | Â |