Synergistic effects of nano urea and PSB on oil quality, production and crop productivity of Monarda citriodora in Jammu region: Synergistic effects of nano urea and psb on Monarda citriodora. Indian Journal of Experimental Biology (IJEB), [S. l.], v. 64, n. 06, p. 572–578, 2026. DOI: 10.56042/ijeb.v64i06.27965. Disponível em: https://or.niscpr.res.in/index.php/IJEB/article/view/27965. Acesso em: 13 jun. 2026.