Pirmani, Afsaneh, Mir Mahmoodi, Touraj, Sharafi, Soran, Yazdan Seta, Saman. Effects of Nitrogen Fertilizer on Morphophysiological and Antioxidant Properties of Calendula officinalis L. under Irrigation Regimes. Journal of Crop Ecophysiology. 2020;14(54):217-236. doi:10.30495/jcep.2020.676139