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Governments, nonprofit organizations, and grower groups have expended considerable resources on agricultural extension and education programs, even though the evidence regarding the impact of these programs on farmers’ technology choices and productivity is mixed. Many of the studies finding substantial effects have methodological problems. We control for these methodological problems by using a panel selection model to examine the effect of the Biologically Integrated Orchard Systems program on California almond growers’ replacement of organophosphate pesticides with alternatives considered less environmentally harmful. We find that the program significantly decreased organophosphate use, suggesting that grower education programs can be an effective policy tool.
Goodhue et al. (Fri,) studied this question.