Fanar Hashum Al-Hashemi, Zohoor Fuaad Abdalijabar, Ahmed Ebtisam Esmaael, Sheren Ghazi Mahmood, Fatimah Ali Hasan. "Qualitative attributes, nutritional traits and yield components of Calendula officinalis L.: response to liquid NPK fertilizer, humic acid, and moringa leaf extract." Scientific Reports (2026). https://doi.org/10.1038/s41598-026-62830-7