Heydari, Saharnaz, Tadayon, Mohammad Saeed, Moafpourian, Golamreza (2018) ‘Effect of Azotobacter and Rhizobium as bio-fertilizers on morphological and physiological trait of African marigold (Tagetes erecta L. cv. Discovery)’, Journal of Plant Ecophysiology, 10(34), pp. 227-237. doi: