Social Learning in Agriculture: Does Smallholder Heterogeneity Impede Technology Diffusion in Sub-Saharan Africa?

Working Paper: CEPR ID: DP15220

Authors: Luc Behaghel; Jeremie Gignoux; Karen Macours

Abstract: Evaluating a large-scale program for dairy farmers in Uganda, we show that a simpleversion of the “contact farmer” extension model can meaningfully increase smallholderfarmers’ revenues. While the program provides no monetary incentives, we find evidencethat two other ingredients – backstopping by professional extension agent and advertisingpro-social motivation – reinforce its impacts. Though it has been hypothesized to be a major impediment to social learning in Sub-Saharan African agriculture, we do not find smallholder heterogeneity to condition theeffectiveness of the approach: farmer trainers trained to take this heterogeneity into considerationdo not perform better; moreover, we find no statistical evidence that programeffects vary by farmers’ characteristics.

Keywords: agricultural productivity; heterogeneity; extension; livestock; social learning

JEL Codes: O12; O13; O33; Q16


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
smallholder heterogeneity (Q12)effectiveness of FT program (M53)
enhanced knowledge transmission (O36)increased adoption of improved feeding practices (Q16)
increased adoption of improved feeding practices (Q16)higher milk production (D29)
FT program (Y20)increased revenues of smallholder dairy farmers (Q12)
FT program (Y20)enhanced knowledge transmission (O36)

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