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Table 11. Log-linear models of impact determinate estimated using two-stage least square<br />

method (2SLS).<br />

A. Dependent Variable: Maize yield (kglha)<br />

Independent variables Coefficients<br />

Intercept<br />

Nitrogen fertilizer (kg Nlha)<br />

Seed cost (Plha)<br />

Pesticide cost (PI ha)<br />

Preharvest labor (hlha)<br />

Power rental (Plha)<br />

Land rental (Plha)<br />

Age of farmer (years)<br />

Schooling years of farmer<br />

Year dummy (1989-1990 = 1)<br />

R2<br />

B. Dependent variable: Rice yield (kglha)<br />

Independent variables Coefficients<br />

Intercept<br />

Nitrogen fertilizer (kg Nlha)<br />

Seed cost (Plha)<br />

Pesticide cost (Plha)<br />

Preharvest labor (ldha)<br />

Power rental (Plha)<br />

Land rental (Plha)<br />

Age of farmer (years)<br />

Schooling years of farmer<br />

Year duinmy (1989-1990 = 1)<br />

R2<br />

C. Dependent variable: Mungbean yield (kglha)<br />

Independent variables Coefficients<br />

Intercept<br />

Seed cost (Plha)<br />

Pesticide cost (Plha)<br />

Preharvest labor (hlha)<br />

Land rental (Plha)<br />

Age of farmer (years)<br />

Schooling years of farmer<br />

Year dummy (1989-1990 = 1)<br />

Note: *, **, and *** significant at 10%, 5%, and 1 %, respectively<br />

- 150 -<br />

Standard error<br />

Standard error<br />

Standard error

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