Assessing the Impact of Mobile-Based Advisory Services on Smallholder Tomato Farmers’ Knowledge, Attitudes, and Practices in Postharvest Handling and Market Access

Project Abstract

This study investigates how mobile-based advisory services influence smallholder tomato farmers’ knowledge, attitudes, and practices (KAP) related to postharvest handling and market access, with a focus on understanding the mechanisms through which information delivery affects behavior and outcomes. A mixed-methods design was employed in three tomato-producing districts, combining a quasi-experimental field trial with a parallel qualitative inquiry to capture both measurable changes and contextual factors. The intervention group received targeted, timely messages via SMS and a smartphone-optimized app delivering agronomic guidance, postharvest best practices, pest and disease alerts, packaging recommendations, and market price information, complemented by periodic voice calls from extension agents. The control group continued with conventional extension services. Baseline and endline surveys (n = 600 households; 300 per group) assessed knowledge gains, shifts in attitudes toward postharvest handling, and adoption of improved practices, along with objective postharvest quality indicators, sales volumes, and income from tomato markets. Qualitative data were gathered through focus group discussions and in-depth interviews with farmers, extension workers, aggregators, and input suppliers to elucidate user experiences, information credibility, trust, and perceived barriers to adoption. Results indicate a significant improvement in knowledge scores among the intervention group, driven by clarity of messaging, frequency of interactions, and the practical relevance of tips aligned with farmers’ realities. Attitudinal shifts were observed, characterized by heightened perceived value of postharvest handling, willingness to invest in cold storage, improved forecasting of harvests, and increased risk tolerance for adopting new packaging and sorting practices. Adoption of recommended postharvest handling techniques—such as hygienic sorting, controlled curing, rapid cooling where feasible, and standardized packaging—was higher in the intervention group, translating into measurable reductions in spoilage rates and enhanced market access, as evidenced by longer shelf-life, higher market grades, and a modest but statistically significant rise in average selling prices. The study also identifies critical mediators of effectiveness, including message personalization, language accessibility, trust in the information source, peer learning through farmer groups, and the integration of price signals with advisory content. Analysis of cost-effectiveness reveals that mobile-based advisories offer a scalable, low-cost channel with high potential return on investment when paired with local extension capacity and reliable network coverage. However, barriers such as limited digital literacy, inconsistent connectivity in remote areas, and initial capital constraints for postharvest equipment were noted. Policy implications point to the need for multi-channel extension strategies that combine mobile advisory services with hands-on demonstrations, targeted subsidies for cold chain investments, and partnerships with local aggregators to strengthen market linkages. The findings contribute to a nuanced understanding of how mobile-based information ecosystems can reshape farmer knowledge, attitudes, and practices, ultimately improving postharvest outcomes and market participation for smallholder tomato producers.

Project Overview

What This Project Is About

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The project looks at how mobile advisory services affect smallholder tomato farmers’ knowledge about farming methods, their attitudes toward new ideas, and their everyday practices in handling harvests and finding buyers. It explores whether these digital tips, reminders, and market information change what farmers know, how they feel about change, and what they actually do on the farm and in selling produce.

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The Problem It Addresses

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Objectives of the Project

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1. Assess changes in farmers’ knowledge after using mobile advisory services.
2. Explore shifts in attitudes toward new farming methods and postharvest practices.
3. Document changes in actual postharvest handling and market access practices.
4. Identify factors that support or hinder adoption of mobile advice.

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What You Will Do Step by Step

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Step 1: Review existing mobile advisory programs and tomato farming practices. Step 2: Select a sample of tomato farmers and enroll them in mobile advisory services. Step 3: Collect baseline data on knowledge, attitudes, and practices. Step 4: Deliver regular mobile guidance and prompts. Step 5: Collect follow-up data and compare with baseline. Step 6: Analyze data to find patterns and impacts. Step 7: Discuss what helps or hinders effective use and make recommendations.

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Expected Outcome

Expected outcomes include measurable improvements in knowledge, more favorable attitudes toward modern practices, and better postharvest handling and clearer market access actions. The study should identify practical guidelines for designing effective mobile advisory programs for tomato farmers and similar crops.