Determination of the water footprint in the production of the bulb onion crop under two irrigation systems in Samaca (Colombia) द्वारा Cely-Reyes, Germán Eduardo, Camargo-Guerrero, Fabiola del Rosario, Fernández-Pérez, Carlos Julio, Walteros-Torres, Ingrid Yaneth, Serrano-Cely, Pablo Antonio