Susceptibility of Two Apple Cultivars to Infestation with European Red Mite Panonychus ulmi Koch (Acari: Tetranychidae)
Hassan, M., El-Sherif, A., El-Badawy, S., Draz, M. (2015). Susceptibility of Two Apple Cultivars to Infestation with European Red Mite Panonychus ulmi Koch (Acari: Tetranychidae). EKB Journal Management System, 9(1), 31-35. doi: 10.21608/ajesa.2015.163982
M. F. Hassan; A. A. El-Sherif; S. S. El-Badawy; M. G. Draz. "Susceptibility of Two Apple Cultivars to Infestation with European Red Mite Panonychus ulmi Koch (Acari: Tetranychidae)". EKB Journal Management System, 9, 1, 2015, 31-35. doi: 10.21608/ajesa.2015.163982
Hassan, M., El-Sherif, A., El-Badawy, S., Draz, M. (2015). 'Susceptibility of Two Apple Cultivars to Infestation with European Red Mite Panonychus ulmi Koch (Acari: Tetranychidae)', EKB Journal Management System, 9(1), pp. 31-35. doi: 10.21608/ajesa.2015.163982
Hassan, M., El-Sherif, A., El-Badawy, S., Draz, M. Susceptibility of Two Apple Cultivars to Infestation with European Red Mite Panonychus ulmi Koch (Acari: Tetranychidae). EKB Journal Management System, 2015; 9(1): 31-35. doi: 10.21608/ajesa.2015.163982

Susceptibility of Two Apple Cultivars to Infestation with European Red Mite Panonychus ulmi Koch (Acari: Tetranychidae)

Acarines: Journal of the Egyptian Society of Acarology
Article 5, Volume 9, Issue 1, 2015, Page 31-35  XML PDF (302.87 K)
Document Type: Original research articles
DOI: 10.21608/ajesa.2015.163982
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Authors
M. F. Hassan1; A. A. El-Sherif1; S. S. El-Badawy2; M. G. Draz2
1Dept. of Zoology and Agric. Nematology, Fac. of Agric., Cairo Univ., Giza, Egypt
2Pest Physiology Dept., Plant Protec. Res. Inst., Agric. Res. Cent., Giza, Egypt.
Abstract
Experiments were conducted to estimate the susceptibility of two apple cultivars (Anna and Golden dorset) to infestation with Panonychus ulmi Koch (Acari: Tetranychidae) and its population fluctuation during the two successive seasons, 2012 and 2013 at Menoufia governorate. The results showed that, Anna cultivar was the most highly susceptible recording average of 7.34 and 10.5 mite moving stages/leaf during the two successive seasons, respectively. The lower infestation was recorded with Golden dorset cultivar, being 1.6 & 7.49 mite moving stages/leaf during the two successive seasons, respectively. Susceptibility of apple cultivars to infestation with P. ulmi may be affected by plant leaf morphological structure and its chemical contents. The density of trichomes of Golden dorset cultivar was higher than that of Anna cultivar, the less density of trichomes the more mite infestation. Also, when the level of total phenolic compounds increased the infestation percentage decreased, while no effect of Tannins occurred. Mite populations reached its peak during May and April in the first and second seasons, respectively, and infestation was lower in the first season.
Keywords
Susceptibility; Host plant resistance; Apple cultivars; Population dynamics; Panonychus ulmi
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