Annals of Plant Protection Sciences

A field trial was laid out to assess the efficacy of different treatments against 3^rd and 5^th instar larvae of Spodoptera litura, infesting cauliflower. On the basis of data of two season crops individually and their pooled analysis, all the treatments were found significantly superior over control. Among treatments, the highest larval reduction of 78.8 and 68.0% was recorded with the treatment comprising of Btk 1 (1.5 kg/ha) + Btk (1.5 kg/ha) + Btk SD 1 (1.5 kg/ha), whereas it was at par with the treatment malathion (0.8 l/ha) + Btk SD 1 (1.5 kg/ha) and Btk (1.5 kg/ha) (78.0 & 65.8%) in 3^rd and 5^th instar larvae, respectively. The minimum larval reduction (55.5 & 45.5%) was obtained with treatment comprising azadirachtin (1.0 l/ha) + SINPV (600 LE/ha) + SINPV (600 LE/ha) though it was at par with malathion + Btk + azadirachtin (56.9 & 46.6% reduction), respectively.