Determinants of Post-Harvest Losses in Primary Production: Evidence From Vietnamese Lychee Farming

Linh T. Pham, Hisako Nomura, Mitsuyasu Yabe and Yoshifumi Takahashi

Journal of Agricultural Science, 2025, vol. 17, issue 11, 40

Abstract: Despite post-harvest losses in primary production severely threatening food security and farmer livelihoods, information about loss quantification and characteristics remains limited, by focusing exclusively on physical damage while ignoring quality deterioration and economic value losses. This study addresses this gap by examining Vietnamese lychee production from harvesting to primary commercialization, expanding loss quantification beyond conventional physical damage to incorporate intuitive losses representing quality deterioration and economic losses from farmers’ weak market power. Fractional regression models are employed to explore factors affecting post-harvest losses and determine marginal effects across different loss types. Data reveal an average total post-harvest loss of 12%, driven by three primary factor groups- household and farming characteristics, post-harvest handling practices, and market conditions. Notably, Good Agricultural Practice (GAP) implementation and agricultural cooperative participation demonstrate the largest effect magnitudes, followed by cold storage usage and other post-harvest handling practices. Whereas prior studies targeting isolated technical interventions, these findings enable systematic solutions for comprehensive post-harvest loss reduction, including expanded GAP adoption to improve product quality, cooperative development to strengthen market positioning, and shelf-life extension technologies that enable farmers to diversify markets and reduce vulnerability to exploitative trading practices.

Date: 2025
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