Department of Plant Pathology, CSK HPKV, Palampur-176062
National Symposium on Strategic Issues in Plant Pathological Research held at Department of Plant Pathology, CSK HP Krishi Vishvavidayalaya, Palampur on November 24–25, 2011
The plant world is comprised of rich source of secondary metabolites which not only have a significant role in the primary physiological processes in the plants but are endowed with potential bioactivity. In the present study fairly good inhibitory effects of different botanicals against C. truncatum were obtained. Eight locally available plants which grow in abundance viz., basuti (Adhatoda vasica), bhang (Cannabis sativa), kali basuti (Chromolaena odorata), barein (Acorus calamus), buttercup (Ranunculus bulbosus), safeda (Eucalyptus globulus), curry plant (Murraya koenigii) and pine needles (Pinus longifolia) were used and aqueous extracts of different concentrations (20, 40, 60, 80 and 100%) were tested for their efficacy against the pathogen. The best inhibition of mycelial growth was observed at 100 per cent concentration of all botanicals significantly. An increased inhibitory effect of mycelial growth was observed with an increase in concentration from 20 to 100 per cent.Cannabis sativa at 100 per cent was found best (81.23%) followed by Chromolaena odorata (80.46%) and Adhatoda vasica (67.96%). At 20 per cent Eucalyptus globulus was found to be most effective (35.14%) followed by Pinus longifolia (19.51%) and Acorus calamus (17.14%). At 40 (49.24%), 60 (60.13%) and 80 (70.28%) per cent concentration Chromolaena odorata was found to be effective. Minimum mycelial inhibition was observed in Murraya koenigii at all the concentrations.
