Vol. 10, Special Issue 12 (2021)

Charcoal rot being a major concern on mungbean whose control largely depends on the application of chemical pesticides however it is not the long term solution due to environment concern and risk due to fungicide residues. Under these circumstances, Induced resistance is one of the most dominant mechanism in managing the disease by increasing the activity of various defense related enzymes and non-enzymatic antioxidants. Role of inducers viz. Salicyclic acid (SA), Jasmonic acid (JA) at three different concentrations viz. low, medium and high concentrations, viz. JA (1mM, 2.5 mM, 4 mM) & SA (0.5 mM, 1 mM, 2 mM) were evaluated on induction of resistance to manage Charcoal rot of mungbean in three different varieties viz. resistant, moderately susceptible and susceptible against the disease was studied in net house. Elicitor treatments exhibited maximum content of total phenols, Ascorbic acid content and Orthodihydroxy phenols (OD- Phenols) content as compared to water sprayed control on un- inoculated plants. Among all the treatments, SA@2 mM was most effective on increasing the observed parameters as total phenol content Ascorbic acid content and Orthodihydroxy phenols (OD- Phenols) content followed by JA on disease resistance. Lower amount of phenols and low accumulation of OD-phenols were recorded in healthy plants when compared with infected plants. These changes can be attributed to the role played by inducers and it is well known fact that used elicitors played an important role in enhancing the defense mechanism in plants.