Isla, R., Salmeron, M., Cavero, J., Yagüe, M.-R., & Quilez, D. (2015). Utility of the end-of-season nitrate test for nitrogen sufficiency of irrigated maize under Mediterranean semi-arid conditions. Spanish Journal of Agricultural Research, 13(1), e0902. https://doi.org/10.5424/sjar/2015131-6806