Heat Requirements for the Development of the Black cutworm, Agrotis ipsilon (Hüfnagel) (Noctuidae: Lepidoptera)
Dahi, H., Ibrahem, W., Ali, M. (2009). Heat Requirements for the Development of the Black cutworm, Agrotis ipsilon (Hüfnagel) (Noctuidae: Lepidoptera). EKB Journal Management System, 2(1), 117-124. doi: 10.21608/eajbsa.2009.15502
Hassan F. Dahi; Walaa G. Ibrahem; Mohsen M. Ali. "Heat Requirements for the Development of the Black cutworm, Agrotis ipsilon (Hüfnagel) (Noctuidae: Lepidoptera)". EKB Journal Management System, 2, 1, 2009, 117-124. doi: 10.21608/eajbsa.2009.15502
Dahi, H., Ibrahem, W., Ali, M. (2009). 'Heat Requirements for the Development of the Black cutworm, Agrotis ipsilon (Hüfnagel) (Noctuidae: Lepidoptera)', EKB Journal Management System, 2(1), pp. 117-124. doi: 10.21608/eajbsa.2009.15502
Dahi, H., Ibrahem, W., Ali, M. Heat Requirements for the Development of the Black cutworm, Agrotis ipsilon (Hüfnagel) (Noctuidae: Lepidoptera). EKB Journal Management System, 2009; 2(1): 117-124. doi: 10.21608/eajbsa.2009.15502

Heat Requirements for the Development of the Black cutworm, Agrotis ipsilon (Hüfnagel) (Noctuidae: Lepidoptera)

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 13, Volume 2, Issue 1, June 2009, Page 117-124  XML PDF (399.93 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2009.15502
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Authors
Hassan F. Dahi1; Walaa G. Ibrahem2; Mohsen M. Ali2
1Plant Protection Research Institute, Agricult. Research Center, Dokki, Giza, Egypt
2Plant Protection Research Institute, Agricult. Research Center, Dokki, Giza, Egypt.
Abstract
The present investigation aimed to study the effect of three constant temperatures (20, 25, and 30°C) on the development of the black cutworm, Agrotis ipsilon (Hüfnagel). The incubation period, larval duration, pupal duration, pre-oviposition period and duration of generation were estimated. The time required for development was decreased as the temperature increased from 20 to30 °C. The lower threshold temperatures (t0) was 11.49°C for eggs, 10.63 °C for larvae, 9.83 °C for pupae, 11.06 °C for pre-oviposition period and 10.53 °C for generation. The average thermal requirements needed for completing the development were 51.3, 303.5, 183.5, 38.1 and 575.3 degree-days for eggs, larvae, pupae, pre-oviposition period and generation, respectively.
Keywords
Agrotis ipsilon – Heat Requirements – Degree Days; Lower threshold (t0); prediction
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