Evaluation of Biorational Methods Against Spotted Pod Borer Maruca Vitrata (F.) in Lablab and Green Gram

Lablab (Lablabpurpureus L.) and green gram (Vigna radiata L.) are attacked by a wide range of insect pests among which legume pod borer Maruca vitrata (F.) does extensive damage during flowering and pod formation stages. Identification of promising biorational materials can lead to developing IPM. Field experiments were conducted on lablab var. Co Gb 14, and green gram, var. CO 8 to evalaute the efficacy of alternative control methods. Spinosad® 45%SC @ 75 ml ha^-1 was observed to be superior to all other treatments with cumulative mean population reduction of 72.58 and 50.29% followed by emamectin benzoate 5%SG @ 200 ml ha^-1 (65.16 and 47.96%), followed by the sequential application of emamectin benzoate (200 ml ha^-1) + B. brevicornis (2000 adults ha¹ released after 2 weeks) (63.70 and 46.51%), respectively, on lablab and green gram.