Archives

Wilt complex of pomegranate is a serious threating in Karnataka, it is caused by Ceratocystis fimbriata. So two fungal and two bacterial antagonists were screened against Ceratocystis fimbriataviz., Trichoderma harzianum, Trichoderma viride, Bacillus subtilis and Psuedomonas fluroscence. In fungal antagonists both are effective and inhibited pathogen completely. The T. harzianum showed the maximum inhibition against fungus (100%) but remains on par with T. viride (100%). In bacterial antagonists P. flourescence inhibited pathogen development but B.subtilis is not inhibited growth of fungus. The P. fluorescens (42.33%) showed lower inhibitory effect over pathogen, while the Bacillus subtilis was recorded zero inhibition on pathogen growth. On the whole, fungal bio agents were found better than bacterial bio agents. T. harzianum showed the maximum inhibition of the test fungus within four days and completely inhibited the perithecium production as well as grows over the pathogen. T. viride was taken six days. P. fluorescens also inhibited perithecium production in eight days. B. subtilis was completely ineffective in inhibition of pathogen growth as well as perithecium production.
Key words: Ceratocystis fimbriata, Trichoderma harzianum, Viride, Perithecium and Wilt