Question: query regarding management of bacterial wilt in tomatos. 
Answer: please uproot the affected plants from the field, after that drench the sol with streptomycin 2gram/liter of water or blitox-50 3gram/liter of water and keet the field open for 4-5 days.after that you can replant the seedling there. in the same field please apply above mention bactericide in the root portion of the unaffected plants also.