Physicochemical variability of agricultural soils in the bulb onion (Allium Cepa L.) crop of the irrigation and drainage district Usochicamocha in Boyacá, Colombia

The bulb onion crop, besides being one of the main vegetable crops worldwide for Boyacá, is considered one of the pillars of the regional agricultural economy. Despite being so important from the economic aspect, at the agricultural level this crop has several problems among which stand out the nutr...