Vol. 11, Issue 1 (2022)

Author(s):
Anita Jat, PS Shekhawat, KK Saini, Tara Yadav and Rajpal Yadav

Abstract:
Four bioagents, two antibiotics and two fungicides were evaluated against Xanthomonas axonopodis pv. cyamopsidis in vitro condition to develop effective management strategies for bacterial blight of clusterbean. During in vitro studies, bioagents, antibiotics and fungicides were able to inhibit growth of the bacteria at all the concentrations tried. The maximum inhibition zone (30.50 mm) was shown by streptocycline followed by neomycin (24.50 mm), copper oxychloride (23.25 mm) and copper hydroxide (19.58 mm) at their highest concentration. Streptocycline @ 300 ppm and copper oxychloride @ 2000 ppm were found superior, as compared to others. None of the bioagent was found effective against the bacterial blight pathogen X. axonopodis pv. cyamopsidis except P. fluorescens where 10.70 mm mean diameter of inhibition zone was recorded.