Eco-friendly Management of Tomato Fruit Borer, Helicoverpa armigera (Hubner) using Microbials and Botanicals in Manipur

Field experiments were carried out at the Vegetable Research Farm, College of Agriculture, Central Agricultural University, Imphal, Manipur for two consecutive Rabi seasons, 2020-21 and 2021-22 to determine the efficacy of biorational insecticides and chlorantraniliprole against Helicoperva armigera on tomato under Manipur condition. Among the nine insecticides tested, chlorantraniliprole 18.5 SC @ 150 ml/ha was found most effective against H. armigera followed by green lipel (Bacillus thuringiensis var. kurstaki) @ 2500 ml/ha and green focus (botanical extract of Derris indica) @ 1000 ml/ha. Cow urine + Artimisia nilagirica proved to be the least effective followed by green pacer (Metarrhizium anisopliae). Among biorational insecticides tested, maximum fruit yield (19.12 t/ha) was harvested from the plots treated with green lipel which did not differ significantly from that of green focus (19.03 t/ha) treated plots.