What is it about?
Under laboratory conditions of 25 ± 2°C and relative humidity of 65-70%, this study was conducted to ascertain the effects of crude terpenoid compound extracts of Melia azedarach L. leaves and fruits on some biological aspects of the whitefly Bemisia tabaci (Genn.).
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Why is it important?
Melia azedarach, commonly known as the chinaberry tree, belongs to the Meliaceae family. Many pieces of literature indicate that the M. azedarach tree contains various compounds of terpenoids in roots, bark, leaves, seeds, and fruits. Previous studies proved that M. azedarach extracts act as suitable insecticides against whitefly. Our results indicate that the crude terpenoid compounds found in M. azedarach leaves and fruits are effective as an insecticide against B. tabaci at all immature stages, even at low dosages in laboratory conditions (25 ± 2°C and 65–70% relative humidity).
Perspectives
Whiteflies are considered a significant economic pest in both fields. They protect crops and ornamental plants, including guava, cucumber, eggplant, tomato, sweet potato, soybean, watermelon, lettuce, cotton, cauliflower, Chinese cabbage, cassava, avocado, okra, hibiscus, verbena, poinsettia, garden mum, Gerber daisies, lantana, Mandevilla, and rose. When the adult and immature whiteflies feed, they excrete honeydew, a sticky excretory waste composed of plant sugars. Over two hundred plants, viruses are transmitted by whiteflies. B. Tabaci transmitted more than one hundred.
Dr Osama S. Majeed
Ministry of Education, Baghdad, Iraq
Read the Original
This page is a summary of: The Effect of the Crude Terpenoids Compounds of Melia Azedrach Leaves and Fruits on Some Biological Aspects of Whitefly Bemisia tabaci, Ibn AL- Haitham Journal For Pure and Applied Science, January 2023, College of Education for Pure Sciences Ibn Al-Haitham,
DOI: 10.30526/36.1.2951.
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