Kumar Lamban Shamarao Jahagirdar and
P. Jones Nirmalnath

Department of Plant Pathology, College of Agriculture, University of Agricultural Sciences, Dharwad – 580 005, India.

Abstract

Effect of different antibiotics, chemicals and bio-agents was assessed in vitro by  paper disc method and the antibiotics revealed that Streptocycline (750 ppm) with the inhibition of 2.69 cm was more effective and bactrinashak was least effective.  Among chemicals Bordeaux mixture at 1 per cent recorded maximum inhibitory zone. Among the combination COC (0.3%) + streptocycline (750 ppm) was found significantly very effective than rest of the treatments with maximum inhibition zone of 3.41 cm. Among the seven bio-agents evaluated, P. fluorescens recorded highest inhibitory zone (2.63 cm) against X.axonopodis pv. glycines which were followed by Bacillus amyloliquifaciens (0.93 cm). PPFM-20 (0.89 cm) and PPFM-71 (0.88 cm) which are on par with each other.

Keywords: In vitro, Bactrinashak,  Bordeaux mixture, P. fluorescens, X.axonopodis pv. glycines, PPFM strains.