Multi-stakeholder collaboration framework for post-harvest loss reduction: the case of tomato value chain in Iringa and Morogoro regional in Tanzania

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Abstract Globally, one-third of the food produced for human consumption globally is wasted, a figure projected to rise with increased food production. Collaborative efforts across food supply chains can mitigate post-harvest losses, playing a crucial role in enhancing food security. However, frameworks for multi-stakeholder collaborations remain underdeveloped, particularly in developing countries. We address this gap by focusing on the case study of tomato food supply chain in Tanzania. Using value chain analysis with farmers, traders, and transporters in the Iringa and Morogoro regions, findings reveal that 28% of post-harvest losses stem from climate and weather conditions, followed by limited market knowledge (12.5%) and inadequate storage facilities (11%). The results further show that only a small proportion of the tomato is transported to the market due to bad roads and there is limited number of processing industries, exacerbating the issue. Farmers have no knowledge as to how much they will produce or where they will sell in the next season. Building on these findings, the study revises Bhattacharya and Fayezi’s (Ind Mark Manag 93: 328–343, 2021) framework to propose a tailored multi-stakeholder collaboration framework for the Tanzania food supply chain context. This framework aims to empower smallholder farmers to reduce losses and increase incomes while fostering sustainable collaborations applicable to other value chains and regions.

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