Determination of biochemical baseline of resistance against bacterial leaf spot of chilli after application of plant defense activators

Present study was designed to determine the progressive alterations in the leaves of chilli after the application of plant activators to pave the way towards fruitful management of bacterial leaf spots of chilli. Different plant defense activators such as KH2PO4, K2HPO4 and salicylic acid were used and alterations in the biochemicals of chilli were quantified by following standard protocols. In the first experiment, KH2PO4, K2HPO4 and salicylic acid were evaluated at a different concentration under field conditions. Application of salicylic acid expressed less disease incidence (21.111), followed by K2HPO4 (25.167) and KH2PO4 (28.889) as compared to the control. Alterations in biomolecules (SOD, POD, CAT, H2O2, TSS and TSP) were quantified with the application of salicylic acid (0.9285, 0.9297, 0.9347, 1.2278, 0.6663, 0.6804 and 0.6723) followed by K2HPO4 (0.6502, 0.6605, 0.6544, 0.7689, 0.5122, 0.5322 and 0.5222) and KH2PO4 (0.4729, 0.4713, 0.4778, 0.4522, 0.3544, 0.3744 and 0.3644) µg/g. Randomized Complete Block Design (RCBD) was used for the field experiments.