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Journal of Plant Protection and Pathology
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Radwan, S. (2014). SEASONAL ABUNDANCE OF Hemiberlesia lataniae (SIGN.) (HEMIPTERA: DIASPIDIDAE) ON GRAPEVINE IN QALUBYIA GOVERNORATE, EGYPT. Journal of Plant Protection and Pathology, 5(1), 59-70. doi: 10.21608/jppp.2014.87861
Sawsan G. Radwan. "SEASONAL ABUNDANCE OF Hemiberlesia lataniae (SIGN.) (HEMIPTERA: DIASPIDIDAE) ON GRAPEVINE IN QALUBYIA GOVERNORATE, EGYPT". Journal of Plant Protection and Pathology, 5, 1, 2014, 59-70. doi: 10.21608/jppp.2014.87861
Radwan, S. (2014). 'SEASONAL ABUNDANCE OF Hemiberlesia lataniae (SIGN.) (HEMIPTERA: DIASPIDIDAE) ON GRAPEVINE IN QALUBYIA GOVERNORATE, EGYPT', Journal of Plant Protection and Pathology, 5(1), pp. 59-70. doi: 10.21608/jppp.2014.87861
Radwan, S. SEASONAL ABUNDANCE OF Hemiberlesia lataniae (SIGN.) (HEMIPTERA: DIASPIDIDAE) ON GRAPEVINE IN QALUBYIA GOVERNORATE, EGYPT. Journal of Plant Protection and Pathology, 2014; 5(1): 59-70. doi: 10.21608/jppp.2014.87861

SEASONAL ABUNDANCE OF Hemiberlesia lataniae (SIGN.) (HEMIPTERA: DIASPIDIDAE) ON GRAPEVINE IN QALUBYIA GOVERNORATE, EGYPT

Article 6, Volume 5, Issue 1, January 2014, Page 59-70  XML PDF (365.54 K)
Document Type: Original Article
DOI: 10.21608/jppp.2014.87861
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Author
Sawsan G. Radwan*
Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
Abstract
Seasonal abundance of Latania scale, Hemiberlesia lataniae (Sign.) (Hemiptera: Diaspididae) was conducted during two successive years (2010/2011 and 2011/2012) in vineyard orchard at El-Khanka district, Qalubyia Governorate. The obtained results revealed three overlapping generations a year on both grapevine leaves and branches, the shortest generation occurred on grapevine leaves and branches from early or mid-August to mid-October (2.5 - 3 months) whereas the longest one appeared from early or mid-October and continued until grapevine leaves fall down or extend on grapevine branches to early February (3 - 4 months). The intermediate generation started from mid-May or early June to August or early September (3 - 3.5 months). The distribution of H. lataniae population on the grapevine leaves are varied in the year seasons, the autumn season received the highest number of insect population (61.5-63.7%) followed by summer (28.6-29.0%) and winter seasons (5.9 - 8.3%) whereas spring season received the lesser number (1.4 - 1.6%). The same trend was found on the grapevine branches, the autumn season received the highest portion of insect population (33.6 - 47.2%) followed by summer (26.1%) and winter seasons (15.2 - 33.3%) whereas spring season received the lower portion (6.9-11.5%). The seasonal abundance of H. lataniae on grapevine affected greatly with the daily mean temperature and %R.H. the combined effect of both factors contributed with 60.4 and 57.4% of the total population changes in the first and second years.
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