Romero, I., Benito, A., Dominguez, N., Garcia-Escudero, E., & Martin, I. (2014). Leaf blade and petiole nutritional diagnosis for Vitis vinifera L. cv. Tempranillo by deviation from optimum percentage method. Spanish Journal of Agricultural Research, 12(1), 206-214. https://doi.org/10.5424/sjar/2014121-4308