Vol. 12, Issue 11 (2023)

Author(s):
Raut Pooja and Ingle RW

Abstract:
Ralstonia solanacearum is a devastating pathogen that causes bacterial wilt in chilli plants, leading to significant crop losses. Effective management strategies are crucial to combat this disease. In this study, we conducted an in vitro evaluation of antibiotics against Ralstonia solanacearum using HiMedia Octa and Hexa Discs, with a focus on determining the most effective antibiotics and concentrations for inhibiting the pathogen's growth. The results revealed that Ofloxacin exhibited the highest inhibitory effect against Ralstonia solanacearum, forming a maximum inhibition zone of 3.7 mm at a concentration of 5 mcg. Co-Trimoxazole also demonstrated significant inhibition, with a maximum zone of 3.5 mm observed at a concentration of 25 mcg. These findings suggest that Ofloxacin and Co-Trimoxazole have strong potential for controlling Ralstonia solanacearum in chilli plants. Furthermore, the use of HiMedia Octa and Hexa Discs provides a reliable method for assessing the antibiotic susceptibility of this pathogen.