Integrating chlorantraniliprole seed treatment with flooding depth and varietal resistance for the management of rice water weevil (Lissorhoptrus oryzophilus) in rice

Although methods like host plant resistance and cultural practices such as flooding depth influence weevil larval densities, these methods by themselves are inadequate to contain pest population. Small plot field trials were conducted to demonstrate the utility of both the methods with chlorantraniliprole seed treatment. Split plot trials were conducted with flooding regime as a main plot imposed at two levels as "shallow" or "deep" in randomized complete block design. Subplots contained factorial treatment arrangement of three levels of seed treatment/cultivar combination. The efficacy of these treatments were evaluated based on Weevil larval densities and yields.