1Department of Plant Protection, Food Safety Risk Analysis and Assessment Research Center, 107/2 Masis Highway, Yerevan, Armenia
2Invertebrate Ecology Laboratory, Scientific Center of Zoology and Hydroecology of National Academy of Sciences of Republic of Armenia, Yerevan, Armenia
*Corresponding Author: Noushig Zarikian, Invertebrate Ecology Laboratory, Scientific Center of Zoology and Hydroecology of National Academy of Sciences of Republic of Armenia, Yerevan, Armenia, Email: nzarikian@gmail.com, Orcid: 0000-0003-0726-2639
Online published on 7 July, 2025.
The strains of Bacillus thuringiensis bacteria (Bt-type) are utilized for controlling the brown-tail moth pest, Euproctis chrysorrhoea (Linnaeus, 1758), in apple orchards in Armenia from 2020 to 2022.
The study focused on the brown-tail moth larvae in all developmental stages (I-VII) on the Renet Simirenko apple variety. Culture fluids, based on crystal-forming insecticidal strains BtEM-54 and BtEM-82 were employed.
Research has demonstrated that local BtEM-54 and BtEM-82 culture fluids exhibit significant biological efficiency against brown tail moth larvae across various stages (I-II, III-IV, and V-VII) in both laboratory settings and apple orchards. Furthermore, no statistical differences were observed when comparing the biological efficiency factors of these scientific experiments with the standard lepidocide.
Biological control, Biological efficiency, Brown-tail moth, Bt-type, Pest control
