Seasonal incidence of Nomuraea rileyi (Farlow) Samson on Spodoptera litura (F.) in groundnut ecosystem

Studies on incidence of Nomuraea rileyi on Spodoptera litura (F.) in groundnut indicated that first appearance of N. rileyi was in the 30^th standard week which continued upto the 39^th standard week attaining peak between 33^rd to 37^th standard weeks. During this period the temperature ranged between 19.64 and 29.97°C and the RH ranged from 72.49 to 94.19 per cent with mean weekly rainfall fluctuated from 2.0 to 62.30 mm.