Document Details
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Document Type |
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Thesis |
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Document Title |
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The Impact of Lantana camara L. Aqueous Leaves Extract on The Main Insect Pests, Their Natural Enemies and Dry Yield Within Cowpea Vigna unguiculata L تأثير المستخلص المائي لأوراق نبات اللانتانا كمارا على الآفات الحشرِية الرئيسية وأعدائها الحيوية وكذلك إِنتاجية محصول اللوبيا |
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Subject |
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Faculty of Meteorology, Environment and Arid Land Agriculture |
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Document Language |
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Arabic |
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Abstract |
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This study was carried out to evaluate the bioactivity of Lantana camara aqueous leaves extract against the common insect pests in cowpea crop (Empoasca fabae, Thrips tabaci, Hypera postica, Graminella nigrifrons, Contarinia pisi, Pyrrhocoris sp, Bemisia sp, Nezara viridula and Ostrinia nubilalis) and the impacts of the extract on non-targeted species in an open field. Cowpea experimental plots were used for the investigation treated with different L. camara aqueous leaf extract in the Agriculture Research Station at Hada Al-Sham, King Abdulaziz University., Al-Jamoum Governorate, Kingdom of Saudi Arabia. Data were analyzed by applying the one-way ANOVA, and correlation analysis was carried out to assess the relationship between the insect pests and agronomic traits. Results showed that different concentrations from the aqueous leaf extract had various levels of effect on many insect species and non-targeted species. The abundance of major insect pests showed a significant reduction in response to the aqueous extract compared to the positive and negative controls. E. fabae Showed 92 insect mean number in the control treatment and 81 mean number in L. camara at 100% and T. tabaci 132 in control treatment with118 in L. camara at 100%. Data also indicated that the beneficial insects such as Episyrphus balteatus, Coccinella spp, Ammophila sp, and Calosoma chlorostictum were significantly impacted by the treatments, and the population dynamics of the parasitoid Trichogramma sp was significantly affected by the treatments. E. balteatus showed 11 mean number in control treatment and 2.75 in 100% L. camara, and 7.5 mean number of Coccinella sp in the control treatment and in 100% L camara. The results showed that all agronomic traits were affected with the applied treatments. The cowpea agronomic traits were negatively associated with a number of insect pests. In the contrary, Truxalis procera was positively correlated with all agronomic traits. The phytochemical groups screening of L. camara aqueous leaf extract demonstrated the presence of nine phytochemicals.
In conclusion, this study reveals that L. camara aqueous leaf extract could be a potential biopesticide for managing insect pests either directly or indirectly (via less harmful to natural enemies). In addition, robust bioactivity presented in this study could be useful for the development of novel biopesticides from L. camara for safe use and less effect on humans and the environment in arid regions and the worldwide. |
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Supervisor |
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Prof. Dr. Khalid Ali Asiry |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1444 AH
2023 AD |
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Co-Supervisor |
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Prof. Dr. Magdi Ali Ahmed Mousa |
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Added Date |
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Monday, May 1, 2023 |
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Researchers
| معيد علي سليمان | SULAIMAN, MUEED Ali | Researcher | Master | |
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