Population Fluctuation of the Black Olive Scale, Saissetia oleae (Olivier) Infesting the Ornamental Plant, Nerium oleander under Assiut Governorate Conditions | ||||
| Assiut Journal of Agricultural Sciences | ||||
| Article 10, Volume 56, Issue 2, April 2025, Page 148-160 PDF (568.11 K) | ||||
| Document Type: Research papers | ||||
| DOI: 10.21608/ajas.2025.345914.1442 | ||||
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| Author | ||||
Nesreen M.F. Abou-Ghadir 
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| Department of Plant Protection, Faculty of Agriculture, Assiut University, Assiut, Egypt | ||||
| Abstract | ||||
| The ornamental plant, Nerium oleander was studied for its role as a host for the black olive scale, Saissetia oleae (Olivier). The present study was conducted at the Agriculture Experiment Station, Faculty of Agriculture, Assiut University during two consecutive seasons 2021/2022 and 2022/2023. The results of both seasons indicated that the highest weekly pest numbers were recorded during the first week of September. The highest percentages of total monthly average numbers (out of total annual numbers) were found during August (23.59%) and September (27.17%) of the first and second years. The pest has five field annual generations. The climatic conditions of April were ideal for insect reproduction and accumulation as the highest monthly variation rate (MVR) value was achieved during both seasons. No parasitic species were recorded during both seasons. The effect of weather conditions on pest populations was also investigated. | ||||
| Keywords | ||||
| Black olive scale; Nerium oleander; Population dynamic | ||||
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