List of Articles Helicoverpa armigera Open Access Article Abstract Page Full-Text 1 - Study on demographic parameters of Trichogramma brassicae (Bezdenko) (Hym., Trichogrammatidae) on three host species in laboratory conditions A. A. Lashgari A. A. Talebi Y. Fathipour S. Farahani Open Access Article Abstract Page Full-Text 2 - Estimation of economic injury level (EIL) of cotton bollworm Helicoverpa armigera Hb. (Lep., Noctuidae) on cotton J. Alavi M. Gholizadeh Open Access Article Abstract Page Full-Text 3 - Isolation of local isolates of Bacillus thuringiensis from forest soils of Golestan province and evaluation of their toxicity on larva of Helicoverpa armigera (Lepidoptera: Noctouidae). Marzieh Shazdehahmadi Seyed Afshin Sajjadi Open Access Article Abstract Page Full-Text 4 - Study the interaction effects of combined application of some native strains of Bacillus thuringiensis and Nucleopolyhedrovirus on control of Helicoverpa armigera marzieh Shazdehahmadi sayedafshin sajadi zanalabedin Shahadati Moghadam