Evaluation of Bioagents, Botanicals and Chemicals Against Bacterial Blight of Cotton

Bacterial blight of cotton caused by Xanthomonas axonopodis pv. malvacearum (Smith) Dye is a major disease in Vidarbha region. Among bioagents, botanicals and chemicals, copper hydroxide 46.1% @0.25% was found effective in inhibiting the Xanthomonas axonopodis pv. malvacearum with 19.67 mm zone of inhibition followed by copper oxychloride 0.3% + streptomycin sulphate 100 ppm (16.62 mm), streptomycin sulphate alone (15.83 mm). Bioagent Pseudomonas fluorescens Pf-1 @0.2% with 15.20 mm zone of inhibition and neem seed extract 5% was also found effective against Xanthomonas axonopodis pv. malvacearum Seed treatment of Pseudomonas fluorescens Pf-1 @10 g/kg followed by three sprays @0.2% could be efficient to increase yield by reducing the disease under biocontrol management strategies rather man using chemicals'