Resumen

FERRO, Lourenço; SALVADOR, Brasilino  y  NGUENHA, Rafael. Estimate of post-harvest losses in potato (Solanum tuberosum): A case-study at Distrito de Moamba, Bloco I (Moamba-Sede). Rev. de Ciências Agrárias [online]. 2017, vol.40, n.1, pp.154-163. ISSN 0871-018X.  https://doi.org/10.19084/RCA16005.

The objective of this study was to evaluate the postharvest losses of potatoes in Moamba district, block I. Data were collected in three stages: the first occurred soon after harvesting and aimed to quantify the different types of losses (physical, biotic and abiotic) at the time of harvest; in the second stage, the losses that occurred during transport were quantified; the third stage the losses were quantified after storage, for a period of 30 days at an average temperature of 28°C and relative humidity of 73.5%. The losses were determined by the ratio of the total production of the potatoes, obtained by weighing the potatoes crop after harvest, and the amount of potatoes that had each type of damage, in percentage. The total losses of potatoes, from harvesting to storage, were approximately 44.7% of the total production, of which 21.9% are mechanical losses, 56.8% are biotic and 21.3% are abiotic. Of these total losses, 47.2% were noted in the harvesting phase, 6% in the transport phase and 46.8% in the storage phase. It was also made the analysis of changes in quality parameters during these three stages, whereby main quality parameters changes occurred during harvest, transport and storage of potatoes were: appearance, weight, flavour and texture of tubers.

Palabras clave : harvest; losses; potatoes; storage; transport.

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