Seed Treatment With Chitosan and Ethanol-Extracted Propolis for Suppression Bean Root Rot Disease Under Greenhouse Conditions

Root rot disease caused by fusarium solani, sclerotium rolfsii and rhizoctonia solani is a serious and persistent disease problem of bean plants during growing season. the effects of ethanol-extracted propolis (eep) and chitosan as seed treatments on bean root rot disease under greenhouse conditions was evaluated. complete inhibition of linear growth was obtained with chitosan at 8.0 g / l concentration. the heights increase of inhibition zone area was obtained with eep at 15.0 %. greenhouse experiments revealed that all tested concentrations of chitosan and/or eep significantly reduced the bean root rot disease caused by r. solani and s. rolfsii. the highest reduction in root rot disease incidence was obtained with chitosan at 8.0 g /l and eep at 15 % which showed highly significantly reduction in both root rot disease incidence and disease severity. other treatments showed moderate effect.