Daniel Solís|Boris E. Bravo?Ureta|Ricardo Quiroga
Soil conservation and technical efficiency among hillside farmers in Central America: a switching regression model*
University of Miami|University of Connecticut|Inter-American Development Bank
main objective paper evaluate analyse technical efficiency te levels hillside farmers different levels adoption soil conservation el salvador honduras switching regression model implemented examine potential selectivity bias high low level adopters separate stochastic production frontiers corrected selectivity bias estimated group main results indicate households aboveaverage adoption show statistically higher average te lower adoption households higher adoption smaller farms display highest partial output elasticity land constraints land credit markets likely explanations differences addition estimated models show te positive significant association education extension