Ecological studies on the red-scale insect, Aonidiella aurantii (Maskell) (Homoptera: Diaspididae) infesting Lemon trees at Aswan Governorate

Yousef, Shaimaa; Elzoghby, Islam; Othman, Doaa Elwy

doi:10.21608/aujes.2024.290993.1245

Ecological studies on the red-scale insect, Aonidiella aurantii (Maskell) (Homoptera: Diaspididae) infesting Lemon trees at Aswan Governorate

Document Type : Original Research

Authors

¹ 2Plant Protection Dept., Fac. of Agric. and Natural Resources, Aswan Univ., Egypt.

² Plant Protection Department, Faculty of Agriculture and Natural Resources,Aswan University.

³ College of Agriculture and Natural Resources,Aswan University, Plant protection

10.21608/aujes.2024.290993.1245

Abstract

The study was conducted on the special farm in Kom Ombo – Aswan Governorate, from the 1^st of March 2019 until the 15^th of February 2021, to study the population dynamic of red scale insect infesting the lemon trees. The study aimed to study the population density and infestation of the red scale on the Lemon’s trees Under the Aswan Governorate conditions. The results showed that the maximum population density was recorded in autumn (116.19 and 111.84) while the minimum numbers were recorded in winter (45.82 and 61. 58) in the first and second years, respectively. The highest Rate of Monthly variation population (R.M.V.P.) value was achieved during August of both seasons. Also, data shows there were 4 insect generations in the year; the maximum number of insects was recorded in the third generation in the two successive years. Data of the both seasons revealed that the most effective weather variables were maximum temperature and dew point.

Keywords