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Abstract

This article investigates the impact of Integrated Pest Management (IPM) adoption on yields and gross margins of vegetable farmers using survey data from the Ashanti Region in Ghana. A parametric approach that accounts for selection bias in IPM adoption is employed to evaluate the direct impact of adoption of pest monitoring only, pesticide application only and both pest monitoring and pesticides application on yields and gross margins. The empirical results from the study show selectivity effects for the impact of adoption of pest monitoring and adoption of both IPM practices on yields of vegetable farmers but no selectivity effects for the impacts on gross margins. Assessment of yield and gross margin of IPM adopters in sub- Saharan Africa must account for selectivity effects.

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