Ralstonia solnacearum causes bacterial wilt in solanaceous crops. Due to this soil borne bacteria results enormous crop losses. The brinjal or eggplant or aubergine (Solanum melongenaL.) represents the non-tuberous group of Solanum species. Brinjal is the most common, popularand widely grown vegetable crop of both tropics and sub-tropics of the world. In this study, different antibiotics were screened through disk diffusion technique in laboratory, based on the assumption that it might decrease and diminish the severity of wilt disease at field level also. Brinjal isolates at various fields of Ranchi, Jharkhand have been isolated and their results were tested with different antibiotics by using disk diffusion technique. In vitro activities of antibiotics. (ceftriaxon, gentamycin and ambistryn) against five isolates of brinjal strains of R.solanacearum were tested and their effectiveness were analyzed by observing their diameter of zone of Inhibition (ZOI).The best result was observed with the ceftriaxone and ambistryn. with ZOI arround 37 mm at 40ppm in all brinjal isolates. However, gentamycin showed ZOI 27mm to 28 mm at 40ppm. It is expected that these antibiotics formulation and application in field against resistant microorganisms may be a step in the right direction for treating the wilt diseases in brinjal plants.
