| Variable | Coefficient | Std. Err | Z-value | p > /z/ |
| Ln_Land size under fodder | 0.515*** | 0.069 | 7.47 | 0.000 |
| Ln_Quantity of planting materials | 0.257*** | 0.073 | 3.54 | 0.000 |
| Ln_Labor for land preparation | 0.228 | 0.041 | 0.55 | 0.582 |
| Ln_Labor for planting | 0.102* | 0.059 | 1.74 | 0.082 |
| Ln_Labor for weeding | 0.202*** | 0.055 | 3.67 | 0.000 |
| Constant | 3.495 | 0.225 | 15.56 | 0.000 |
| /lnsig2v | −3.211 | 0.251 | −12.78 | 0.000 |
| /lnsig2u | −2.619 | 0.407 | −6.44 | 0.000 |
| Sigma_v | 0.201 | 0.025 |
|
|
| Sigma_u | 0.270 | 0.055 |
|
|
| Sigma-squared | 0.113 | 0.022 |
|
|
| Lambda | 1.344 | 0.077 |
|
|
| Number of observations = 225 |
| Wald Chi2 (5) = 3425.90 |
|
|
| Log likelihood = −13.7709 |
| Prob > Chi2 | =0.0000 |
|