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VOL. 10, ISSUE 1 (2025)
The efficacy of three plant leaves extract on Fall Army Worm, Cotton Mealy Bug and the Two Spotted Spider Mite
Authors
Heba M Nasr, Hala E Moafi, Noura F Abou-Elenien
Abstract
Fall army worm, Spodoptera
frugiperda (FAW), (Lepidoptera: Noctuidae), is one of the most
important invasive destructive pests in recent years which causes serious
damages and a greet lose in crops. The cotton mealy bug, Phenacoccus
Solenopsis Tinsley (Hemiptera: Pseudococcidae), and the two spotted spider
mite, Tetranychus urticae Koch, (Acar: Tetranychidae), were both very
important economic pest’s world- wide. The aim of the study was to looking for
environmentally friend, efficient and less cost plant leave extracts for
controlling the above-mentioned pests. The plant leaves extract used in this
study were, (Artichoke, Okra, Pepper) on the 2nd and 4th
instar larvae of Fall army worm, Spodoptera frugiperda and the newly
emerged adults of the cotton mealy bug, Phenacoccus Solenopsis Tinsley
and two spotted spider mite, Tetranychus urticae Koch which, treated by
four concentrations, (2000, 5000, 10000 & 20000 ppm) for each extract and
the mortality was calculated after (1, 3, 5 and 7 days). The results showed
that the higher concentration, (20000 ppm) of the Artichoke leaves extract
found to had the highest total mortality percentage after 7 days of treatment
for 2nd and 4th instar larvae of Fall army worm, Spodoptera
frugiperda, (86.99 % & 38.67%), respectively. It also had the same
effect on the two spotted spider mite, Tetranychus urticae, (98.00%),
while for the cotton mealy bug, Phenacoccus Solenopsis Tinsley, it had
the lowest effect, (55.33%). On the other hand, the highest total mortality
percentage after 7 days for the cotton mealy bug, were when treated with Pepper
leaves extract, (83.67%). In order to better understanding of the action of
these extracts through studying their effect on biochemical parameters by
estimating some enzymes activity.
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Pages:99-104
How to cite this article:
Heba M Nasr, Hala E Moafi, Noura F Abou-Elenien "The efficacy of three plant leaves extract on Fall Army Worm, Cotton Mealy Bug and the Two Spotted Spider Mite". International Journal of Entomology Research, Vol 10, Issue 1, 2025, Pages 99-104
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