ABSTRACT

Field experiments were conducted to find out the effect of spacing and variety on the incidence of white leaf hopper and brown plant hopper during the aman season. Regarding plant spacing, increasing trend of white leaf hopper population was noticed with increasing plant age. The plant spacing had no influence on the incidence of white leaf hopper population. However, significantly lowest white leaf hopper was recorded in Binasail and highest number of insects was found in susceptible TNI followed by Binadhan-4 and BRRIdhan32. The plant spacing and variety had no significant influence on the incidence of brown plant hopper population in this study.

Key words: Plant spacing, rice varieties, white leafhopper and brown plant hopper