Larval duration (A), larval survival (B), larval weight (C), pupal duration (D), pupation rate (E), pupal weight (F) and food consumption rate per day (G) of Cnaphalocrocis medinalis raised on silicon treated (Si1 = 1.25 g Sikg-1 soil, Si2 = 2.50 g Sikg-1 soil) and untreated rice plants (Co, Control).