Evaluation of the Efficiency of Some Aqueous and Alcoholic Plant Extracts in Controlling the Southern Cowpea Beetle Callosobrachus Maculatus .f
Year: 2026
Type: article
Abstract: The results of the study showed that the alcoholic extract of Nerium oleander leaves was superior, recording the highest Mortality rate of 34.14%, which did not significantly differ from the average Mortality rate of Melia azedarach extract, which amounted to 33.05%. Meanwhile, the aqueous extract of Eucalyptus camaldulensis leaves achieved the lowest Mortality rate of 15.55%. The interaction effect between the extract and the concentration used also had a significant impact, as the alcoholic extract of Nerium oleander achieved the highest Mortality rate of 65.56% at a concentration of 3.5%. Also, regarding the interaction effect between the extracts studied and the treatment time, we found that the alcoholic extract of Nerium oleander leaves was more effective, achieving a Mortality rate of 43.33% after 72 hours of treatment. As for the interaction effect between the concentrations used and the time used on the Mortality rate, the concentration achieved 3.5% after 72 hours. The highest mortality rate was 66.66% for the treatment, while the lowest mortality rate was at a concentration of 1.5% after 24 hours of treatment. Therefore, the results confirmed that the alcoholic extract of Nerium oleander leaves is effective and has a significant impact on the mortality rate of the southern cowpea beetle, as it is considered an environmentally friendly natural pesticide.
Source: Mağallaẗ zirāʿaẗ al-rāfidayn
Institution: University of Mosul
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $100
Funder: University of Mosul
OpenAlex ID: W7147528114
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