In vivo appraisal of Phytoextracts, essential oils and insecticides against Tomato fruit borer (Helicoverpa armigera Hubner)

Abstract

Tomato is one of the most popular solanaceous vegetable crops grown all over the world. Tomato fruit borer (Helicoverpa armigera) is one of the major key pests of tomato. The effectiveness of eleven treatments were determined based on the population of fruit borer recorded one day before spray as pre-treatment observation, while post treatment observations were taken at 1, 3 and 7 days after spray (DAS). In 1stspray the most effective treatment was with indoxacarb14.5 SC 1.37 larval population reductions while ginger rhizome extract@ 5% showed least effective with 3.61 larval population reductions. In 2nd spray again the most effective treatment was indoxacarb14.5 SC with 1.21 larval population reductions while ginger rhizome extract 5% showed least effective with 3.83 larval population reductions. After both the spray, the maximum per cent reduction of damage of tomato fruits was obtained by the application of indoxacarb14.5 SC with 12.92% and lowest per cent reduction in damage was recorded in ginger rhizome extract with 38.80%. All the treatments were found effective in increasing fruit yield of tomato with 0.51 Kg/plot to 0.70 Kg/plot tomato yield over control.