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In Colombia the cultivation of bulb onion ( Allium cepa L) is a major generator of incomes and handwork for small growers in the departments of Boyaca, Narino and Cundinamarca. Its production is 320,000 t year-1, of which 185,000 t (58 %) are produced by the department of Boyaca, becoming the first producer at national level. The Irrigation District of the Alto Chicamocha (Drach) produces between 35,000 to 40,000 t, i.e. 12.5 % of the national volume and 21.62 % of the departmental one, this productive line is most relevant in the influence area of the district and it is the main source of income and employment both direct and indirect. It was used the methodology of group analysis to develop the general objective of this research to determine the profitability in the different units; information was collected on primary sources such as: social relations, cost structures, aspects of technical and administrative management, as well as the productivity gained. It was found three groups of profitability of the different units: head, medium and tail. It was concluded that the production costs of the onion bulb are classified in explicit (handwork,inputs, services, and others) and implicit (family work, lease, depreciation and capital income). It is proposed to the owners of the production units of the cola group, the optimization of irrigation, the appropriate use of agrochemicals and the implementation of appropriate cultural practices.

revista de investigacion agraria y ambiental

Análisis de grupo y evaluación financiera de unidades productivas de cebolla de bulbo (Allium cepa L.) en el Distrito de Riego del Alto Chicamocha (Boyacá-Colombia)