Antagonistic effect of liquid bio formulations against wilt of cotton caused by Fusarium oxysporum f.sp. vasinfectum

A pot trial study was conducted to determine the efficacy of combined application of both fungal and bacterial antagonistic organism against Fusarium wilt of cotton. Further, also to estimate the rhizosphere population of antagonistic organism. Among the treatment, combined application of T. viride + P. fluorescens @10ml kg-1 and SA @2.5lit ha-1 (T3) recorded minimum disease incidence (15.57 %) which was on par with the fungicide (14.20%) and also recorded maximum shoot length, root length and plant biomass over untreated control recorded maximum disease incidence (60.86%) and minimum growth parameters. With regard to estimation of rhizosphere population T3 recorded minimum population of Fusarium oxysporum f.sp. vasinfectum (10.30×10-6) and maximum rhizosphere population of 25.20×10-3 cfu g-1 soil of T.viride (Tv3) and 30.10×10-6 cfu g-1 soil of P. fluorescens (Pf7).