ORIGINAL ARTICLE
Biocontrol potential of selected botanicals and Beauveria bassiana (Bals.) spore suspension against Bemisia tabaci (Genn.)
1
Agriculture College, Al-Qasim Green University, Iraq – Babel, 51006, Babel, Iraq
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Submission date: 2025-04-25
Acceptance date: 2025-06-17
Online publication date: 2026-02-05
Corresponding author
Ammar Kareem Jasman
Agriculture College, Al-Qasim Green University, Iraq – Babel, 51006, Babel, Iraq
Agriculture College, Al-Qasim Green University, Iraq – Babel, 51006, Babel, Iraq
HIGHLIGHTS
- Synergistic biopesticides control Bemisia tabaci across all life stages
- Plant extracts and fungus combine to combat Bemisia tabaci effectively
- Biopesticide synergy controls Bemisia tabaci in all growth stages
KEYWORDS
TOPICS
ABSTRACT
This study aimed to evaluate the effects of plant extracts of Capsicum annuum, Datura stramonium
and Allium sativum and the fungus Beauveria bassiana on different developmental
stages of Bemisia tabaci. The D. stramonium extract achieved the highest adult mortality
rate of 92.4% at 4% w/v concentration after 96 hours of exposure, which was higher than
A. sativum (85.7%) and C. annuum (76.3%). The isolated D. stramonium extracts demonstrated
maximum lethal activity against the early developmental stages of B. tabaci,
with second instar showing the highest vulnerability and mortality rate of up to 97.8%. B. bassiana
exhibited maximum pathogenicity against B. tabaci life stages, specifically with
the second instar nymphs showing the highest susceptibility at 93.6% mortality when treated
with 1×108 conidia/mL. The combination of plant extracts with B. bassiana resulted in
elevated mortality rates with all combinations demonstrating synergistic effects with cotoxicity
factor (CTF) values > 20. Lethal potency emerged from the combination treatment
of D. stramonium (1% w/v) and B. bassiana (1 × 106 conidia · ml–1), which reached
a maximum adult mortality of 98.0% ± 2.1. Greenhouse trials showed that this combined
treatment generated population reductions exceeding 90% across all life stages, including
adult insects, nymphs, and eggs within 14 days. These findings confirm that both botanical
extracts and B. bassiana are suitable components for developing sustainable Integrated Pest
Management (IPM) programs due to their efficient and environmentally friendly insect
pest control properties.
RESPONSIBLE EDITOR
Danuta Sosnowska
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
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| eISSN: | 1899-007X |
| ISSN: | 1427-4345 |
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