Four plant extracts (Calotropis procera R.Br., Allium sativum C., Piper betle L., Vitex negundo L.) and one phytochemical (Geraniol) were tested against Rhizoctonia solani Kuhn causing sheath blight disease of rice exhibited fungi-toxic properties under glass house conditions. Among these, Calotropis procera emerged as the most effective, showing highest disease reduction closely followed by Piper betle at 1500 ppm. However at 1000 ppm Piper betle ranked first. Maximum reduction in infected tillers was also observed in Calotropis procera followed by Piper betle at 1500 ppm.