Efficacy of fourteen treatments viz. T1 (Bavistin 50 WP), T2 (Tilt 250 EC), T3
(Champion 77 WP), T4 (Cupravit 50 WP), T5 (Bleaching powder, BP), T6
(Bavistin 50 WP + BP), T7 (Tilt 250 EC + BP), T8 (Champion 77 WP + BP), T<,
(Cupravit 50 WP + BP), T10 (Ash), T11 (Sawdust), T12 (Khudepana), T13
(Poultry manure) and T14(Control) were assessed against Rhizoctonia solani
for the management of sheath blight of rice (BR 3) during March to August,
2007 at the farm of Sher-e-Bangla Agricultural University (SAU), Dhaka.
Effect of different treatments against sheath blight of rice differed significantly
in terms of % Relative Lesion Height (RLH), number of infected tiller per hill,
lesion size, length of panicle, number of filled and unfilled grain, grain yield
(ton/ha), straw yield (ton/ha) and weight of 1000 grains weight. Among the
treatments tested, T6 (Bavistin 50 WP + BP) showed the best performance in
reducing disease incidence and disease severity as well as increasing yield of
rice followed by T7 (Tilt 250 EC + BP) and T8 (Champion 77 WP + BP). The
treatment T6 (Bavistin 50 WP + BP) reduced upto 54.09% RLH and increased
grain yield by 37.34% over control which was followed by Tilt 250 EC + BP
(52.12%, 32.62%) and Champion 50 WP + BP (49.10%, 31.94%), respectively.
The fungicides alone also showed better performances but the soil amendment
alone had no remarkable effect in controlling sheath blight of rice.