Bioefficacy Of phytoextract, antagonist and fungicides against Fusarium Udum incitant Of pigeonpea wilt

The bioefficacy of phytoextracts, antagonist and fungicides were tested in vitro against Fusarium udum Butler Causing wilt of PigeonPea. The garlic bulb extract was significantly superior to inhibit the growth of F. udum Butler which was followed by turmeric bulb and neem leaves extract tested by poisoned food technique. Among the antagonist, Trichoderma viride had significantly inhibited the growth, of F. udum tested by dual culture technique than the control. It was followed by Trichoderma harzianum and Aspergillus niger. The three concentration of each fungicides were tested by poisoned food technique in vitro indicated that all the three concentrations of carbendazim,benoomyl,hexaconazole and methyl mercury chloride had Inhibited cent per cent growth of f. udum upto 10 days in vitro. The propiconazole (1000 & 1500 ppm) and copper oxychloride (3000 ppm) had also inhibited cent per cent growth of pathogen only upto 7 days. The per cent inhibition was decrease significantly with increase in period of incubation from 7 to 10 days suggesting fast degradation of less effective fungicides,whereas effective fungicides inhibited cent % growth for more than 10 days.