Abstract :
Eleven commonly available plant species Acalypha indica L., Achyranthes aspera L., Anisomeles indica L., Curcuma malabarica Velay., Dendrophthoe falcata L., Hedychium spicatum Buch., Lantana indica Roxb., Lantana camara L., Leucas aspera Willd., Oxalis corniculata L., Psidium guajava L. were tested for in vitro fungicidal activity on Rhizoctonia solani Kuhn., a causative agent of Black Scurf disease of potato. Out of eleven, the products of four plants showed significant fungicidal activity against the test pathogen by poisoned food technique. Curcuma malabarica Velay. and Hedychium spicatum Buch. showed 100 per cent inhibition of mycelial growth at 0.5 ml concentration. Results of the present investigation indicate that the selected plant species possess fungicidal activity and can be exploited as natural fungitoxicants to control the growth of Rhizoctonia solani Kuhn.
Keyword :
Fungicidal activity, Plant extract, Rhizoctonia solani, Black Scurf disease, Poisoned food technique