Effect of adoption of organic farming on technical efficiency of olive-growing farms: empirical evidence from West Bank of Palestine

Agricultural and Food Economics

Table 8 Parameter estimates: Test on the validity of the selection instruments.

Variables	Adoption of organic farming	Metaefficiency of conventional farms
Variables	Coefficient	Coefficient
Constant	− 39.3032***	0.9437***
	(13.9383)	(0.2891)
Access to Cannan	6.8116***	0.1225
	(1.1695)	(0.0891)
Modern olive presses	0.6339***	− 0.0054
	(0.1978)	(0.0042)
Control variables	Yes	Yes
Log pseudo-likelihood	− 66.58
Wald χ²₍₂₎	44.88***
F-statistics		2.080
R²		0.187
Pseudo R²	0.586
Observations	261	181

*, **, *** indicate significant at the 10%, 5%, 1% level, respectively. Robust standard errors are in parentheses