Bioefficacy of new ready mixed insecticide (novaluron 5.25% + indoxacarb 4.5% SC) against pigeon pea pod borer (Helicoverpa armigera Hubner)

The effect of different treatment schedules of Novaluron 5.25% + Indoxacarb 4.5% SC against pod borer of pigeon pea gave superlative effect over the sole insecticide Novaluron & Indoxacarb & standard check Lamda-cyhalothrin; though, all the treated plots with chemicals were significantly superior in their performance over that of control plots. Among the three selected dose of Novaluron 5.25% + Indoxacarb 4.5% SC (750, 825, 875 ml ha⁻¹); the said chemical @ 875 ml ha⁻¹ was recorded as best in managing Helicoverpa armigera population up to harvesting period (mean 0.03% infested pod of both years), while, @ 825 ml ha⁻¹ also recorded remarkable effect on the target pest. The maximum yield (23.40 q ha⁻¹) was obtained from the plots treated with Novaluron 5.25% + Indoxacarb 4.5% SC @ 875 ml ha⁻¹ closely followed by @ 825 ml ha⁻¹ (22.98 q ha⁻¹). The yield increase was also of high order. Highest cost-benefit ratio (2.07) was recorded in Novaluron 5.25% + Indoxacarb 4.5% SC @ 825 ml ha⁻¹ closely followed by @ 875 ml ha⁻¹.