Efficacy of Bio-Insecticides and Synthetic Insecticides on the Control of Helicoverpa armigera Insect on Tomato Crop: Helicoverpa armigera Insect on Tomato Crop. (2020). Biological Sciences - PJSIR, 63(1), 17-21. https://doi.org/10.52763/PJSIR.BIOL.SCI.63.1.2020.17.21