Escudero, Luis O.Delgado, Jorge A.Monar, CarlosValverde, F.Barrera, Victor H.Alwang, Jeffrey R.2016-04-192016-04-192014Soil Science 179 (3): 130-140http://hdl.handle.net/10919/70315Metadata only recordCorn (Zea mays L.) is important for food security in much of Ecuador. Small-scale farmers are using nitrogen (N) fertilizer without technical advice based on soil, crop, and climatologic data. The literature lacks studies where tools that can quickly assess management practices’ effectstext/plainen-USIn CopyrightSoil nutrientsSoil managementSoil fertilityManureSoilResource management toolsFertilizationConservation agricultureSANREMNitrogen indexAndesFarm/Enterprise ScaleAbstract