Integrated Disease Management of Rice Blast Caused by Pyricularia grisea (Sacc.)

A field experiment was laid out during Kharif and Rabi, 2011-12 in Randomized Block Design (RBD) with nine treatments and each treatment replicated thrice using susceptible rice variety BPT 5204 at Krishi Vigyan Kendra, Darsi, Prakasam District on integrated management of blast by using fungicides, plant extracts and bio control agents. The combination of seed treatment with carbendazim @ 2g/kg + twice spraying of tricyclazole @ 0.06% at 7 days interval showed significant decrease in the disease severity and grain yield. IDM schedule involving integration of fungicide (seed treatment and foliar spray), biocontrol agent (foliar spray) and plant extract (foliar spray) resulted in significant decrease in disease severity and increase in yield compared to untreated control. However, fungicide application alone resulted in significantly lower disease severity associated with superior yield.