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espanolLas perdidas de alimentos constituyen un tema clave por tratar al generar impactos negativos en la sociedad, la seguridad alimentaria, el medio ambiente y la economia de los sistemas agroalimentarios. Por esto han surgido iniciativas como SAVE FOOD ®; y de la cual nacio el presente trabajo, con el fin de entender la cantidad y causa de perdidas alimenticias en alimentos como la lechuga (Lactuca sativa), en fases de siembra, cosecha y comercializacion de dos sistemas productivos: uno organico y otro convencional, en Costa Rica.Para la fase de siembra a cosecha, el estudio mostro una perdida del 2% en el sistema de produccion convencional, y un 6% para el sistema organico. En el caso de la fase de cosecha a acondicionamiento se encontro un porcentaje de perdida alimenticia para el sistema convencional del 25% y para el sistema organico un 33%. Finalmente, en la fase de acondicionamiento a comercializacion, el porcentaje de perdida alimenticia fue del 13% se para el sistema convencional, y 1% para el sistema organico.Se infirio que estas perdidas responden a causas como las malas practicas agricolas y de manufactura, representadas en la observacion de danos de tipo entomologico, patologico y mecanico, asi como la planificacion y administracion deficiente en pronosticos de produccion y demanda. Entre las soluciones, se sugieren un mejor control de enfermedades y plagas en finca, un mejor manejo por parte de los operarios del producto durante todas las fases de produccion, al igual que una mejor estimacion de la demanda EnglishThe food loss is a key study point since it generates negative impacts in society and in food security, as well as in the environment and in the economy of the agrifood systems. Henceforth, initiatives such as SAVE FOOD ® had emerged. Taking these aspects into consideration, this paper was created with the intention to understand the quantity and cause of the food loss in lettuce (Lactuca sativa) in the stages of sowing, harvest, and marketing of both organic and conventional production systems, located north of Cartago, in Costa Rica. The study showed that there were pre-harvest losses of 2% in the conventional production system and 6% in the organic production system. Moreover, in the case of the harvest to conditioning stage, a 25% food loss was found in the conventional system and 33% of losses were found for the organic production system. Finally, in the stage of conditioning to commercialization, the conventional system showed a loss of 13%, while the organic system was settled with a loss of 1%.The cause inference process suggested that these losses occurred due to different causes such as improper agricultural and manufacturing practices, represented in high entomological, pathological, and mechanical damage. Likewise, the deficient planning and administration in production and demand predictions were important causes too

tecnología en marcha

Evaluación de pérdidas de alimento en lechuga (Lactuca sativa) durante las fases de precosecha, cosecha y comercialización bajo un sistema de cultivo orgánico y uno convencional