Table 4.

Elasticities of Selected Variables.

	Standard Model (SM)		Exogenous Model (EM)		Endogenous Model (ENM)		Full Model (FM)
Variable	Elasticity	SE	Elasticity	SE	Elasticity	SE	Elasticity	SE
Land	−1.75	0.24	−2.35	0.042	−2.27	0.069	−2.30	0.139
Labour	3.09	0.002	3.08	0.001	3.09	0.001	3.08	0.001
Nitrogen	2.99	0.095	2.33	0.017	2.34	0.026	2.35	0,071
TOC			0.90	0.109	0.75	0.182	1.32	0.351
P			1.47	0.013	1.46	0.012	1.52	0.052
pH			1.73	0.07	2.08	0.06	2.01	0,006

SE = Standard error.