Influence of various fungicides on the management of rice blast disease

Evaluation of different fungicides against rice blast disease was carried out during kharif 2007, at Rice Research Institute, Kala Shah Kaku. A highly susceptible rice variety Basmati C-622 was planted in Randomized Complete Block Design and the application of various fungicides viz Rabicide 30WP, Nativo SC, Thiovit 80 WP, Cuproxit 345 SC, Score 250 EC, Filia 525 SC, Armure, Tilt 250 EC, and WSH004 were made with dose rates of 3 g/liter H2O, 0.8 gm/liter H2O, 10 gm/liter of H2O, 3 ml/liter of H2O, 1.25 ml/liter of H2O, 3 ml/liter H2O, 1.2 ml/liter H2O, 0.8 ml/liter of H2O and 10 ml/liter of H2O. All the fungicides proved to be affective in the management of rice blast disease but Rabicide, Nativo and Score proved effective in all the three weeks in reducing the disease percentage more in 3rd week with 11.46%, 12.15% and 12.85%.. The control of disease in case of neck blast was shown by Rabcide, Score and Nativo with 12.81%, 14.24% and 17.01% disease respectively. WHS004 was proved the least effective in controlling leaf and neck blast.