Abstract
Impacts of integrated pest management (IPM) were assessed for six vegetables: eggplant (Solanum melongena L.), bitter gourd (Momordica charantia L.), tomato (Solanum lycopersicum L.), cabbage (Brassica oleracea L. var capitata), cucumber (Cucumis sativus L.), and country bean (Lablab purpureus L.) in Bangladesh. Propensity score matching (PSM), inverse probability weighting (IPW), and inverse probability weighted regression adjustment (IPWRA) were used to assess farm level impacts of IPM. Economic surplus analysis was employed to estimate market level benefits. IPM adoption significantly reduced the number of pesticide applications and pesticide costs for eggplant, bitter gourd, and tomato. For all vegetables together, pesticide costs per hectare were Tk. 1990.42 ($24.88 USD), Tk. 2039.63 ($25.50 USD), and Tk. 2017.53 ($ 25.21 USD) less for adopters than for non-adopters based on nearest neighbor, kernel and radius matching, respectively. IPW and IPWRA also exhibited similar type of findings. The highest market level benefits were obtained for eggplant IPM research and training. IRR was also highest for eggplant IPM research (42%) followed by tomato (39%). Policy implication included measures for more extension efforts and increased investment in IPM research and development.
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