author(s)
AS Jadhav, DS Mutkule, PK Waykule, AS Ingale and AP Dhormare

abstract
An inspection was undertaken to study the bio-efficacy of different insecticides against head borer (Helicoverpa armigera) on sunflower under field condition during Kharif, 2019 at research farm of Oilseed Research Station, Latur, Maharashtra, India. The observations on total number of head borers were recorded on five randomly selected plants from each treatment at one day before and 3, 7 and 14 days after first and second application of insecticides. The treatments of different insecticides viz., indoxacarb 0.019 percent, emamectin benzoate 0.006 percent, quinalphos 0.03 percent, chlorantraniliprole 0.024 percent, cypermethrin 0.03 percent and profenophos 0.06 percent were evaluated against head borer, Helicoverpa armigera revealed that emamectin benzoate 0.006 percent was found most effective treatment in reducing the population of head borer (0.00 and 0.07 larvae per five plants per plot at 3 days after first and second spray respectively), followed by chlorantraniliprole 0.024 percent. Significantly higher seed yield (2846 kg/ha) of sunflower was recorded in treatment emamectin benzoate 0.006 percent, it was followed by treatment chlorantraniliprole 18.5 percent (2656 kg/ha). The highest ICBR (1:15.31) was recorded with treatment emamectin benzoate 0.006 percent which was followed by cypermethrin 0.03 percent (1:11.55).