Table 4

Estimation results of constant coefficient models

Dependent variable: Log of rice output
VariablesAugmented linear modelPartially nonlinear model
(1)(2)(3)
SeediLog of seed cost−0.1323*** (–3.84)−0.1007*** (–3.25)
FertilizeriLog of fertilizer cost0.2143*** (8.20)0.1921*** (7.68)
PesticideiLog of pesticide cost0.0162 (0.74)0.0165 (0.77)
HerbicideiLog of herbicide cost0.0065 (0.30)−0.0187 (–0.89)
LaboriLog of labor cost−0.1941*** (–6.18)−0.2013*** (–6.67)
FarmsizeiLog of farm size1.0602*** (41.02) 
eduiYears of schooling of household head0.0263 (1.58)0.0268 (1.67)
Constant C −7.0622 (–30.34) 
Number of observation (N)901901
Prob > F 0.000 
R-squared 0.81590.1612
Adj. R-squared0.81450.1556
Root MSE 0.39480.3742

Note(s): (*), (**) and (***) designate statistical significance at the 10, 5 and 1%, respectively

Source(s): The author's survey (2018)

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