STUDIES ON BACTERIAL WILT DISEASE CAUSED BY Ralstonia solanacearum

Among the bacterial diseases infecting tomato and potato crops, bacterial wilt caused by Ralstonia solanacearum (Smith) Yabuuchi, is one of the most destructive disease causing accountable qualitative and quantitative losses. Therefore, present investigations on R. solanacearum with the objectives viz., survey, symptomatology, pathogenicity, cultural, morphological, biochemical and molecular variability amongst R. solanacearum isolates, effect of the bio control agents, bacteriocin like substance, essential oils, chitosan and induce resistance compounds on the growth of R. solanacearum. Efficacy of afore mentioned treatments and some integrated disease .management strategies were undertaken during 2015-2016 to 2016-2017 at Egypt.