An Interactive Effect Of Neem, Trichoderma Viride And Pseudomonas Fluorescens On Tobacco Damping Off Disease Incidence

The present study was conducted to find out the combinatory effect of neem, Trichoderma viride and Pseudomonas fluorescence by seed and soil application methods against tobacco damping off disease under field condition. In seed treatment method, treatment number T7 (Neem + T.viride + P.fluorescens) recorded 7.0 per cent of pre emergence and 12.0 per cent of post emergence damping off which accounting 75.00 and 66.66 per cent disease reduction over control. This was on par with copper oxy chloride treatment T8 recorded 64.28 and 58.83 per cent disease reduction over control respectively. Whereas, in soil application method T7 (Neem cake + T.viride + P.fluorescens) recorded 6.0 per cent of pre emergence and 10.0 per cent of post emergence damping off. The reduction of disease were 76.92 per cent and 70.58 per cent respectively. This treatment was on par with copper oxy chloride treatment T8. Here the damping off incidence was reduced by 69.23 per cent in pre emergence and 64.70 per cent in post emergence phases. The same trend was observed in biometric of tobacco revealed that compared to other treatment T7 recorded maximum shoot length, root length which was followed by T8 (copper oxy chloride 0.05 per cent) under both seed and soil application method.