Management of false smut of rice with new fungicidal molecules

Field experiments were carried out during thaladi season of 2012 - 2013 and 2013 - 2014 at Tamil Nadu Rice Research Institute, Aduthurai, Thanjavur, to study the effect of new fungicidal molecules on the false smut disease (Ustilaginoidea virens), incidence of rice. Foliar spray of Trifloxystrobin 25% + Tebuconazole 50% (0.4 g L"¹) and Propiconazole 25 EC (1 mL L"¹) at 50% PE (panicle emergence) were found to be effective with 1.68% and 1.49% of infected panicles/sq.m., respectively, as compared to untreated control (3.94%). The infected spikelets/panicle recorded after treatment with both the fungicides were 2.82% and 2.63% as compared to the untreated control (6.86%). Similarly, the grain yield of 4866 kg ha"¹ and 4730 kg ha"¹, respectively was recorded in the treated plants as compared to 4495 kg ha"¹ in untreated control