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SERAG, A. (2017). EVALUATION OF ECONOMIC THRESHOLD LEVEL OF THE SEYCHELLES FLUTED SCALE, ICERYA SEYCHELLARUM (WESTWOOD) (HEMIPTERA: MONOPHLEBIDAE) ON MANGO TREES IN GIZA GOVERNORATE. Egyptian Journal of Agricultural Research, 95(2), 679-689. doi: 10.21608/ejar.2017.148734
ADL M. SERAG. "EVALUATION OF ECONOMIC THRESHOLD LEVEL OF THE SEYCHELLES FLUTED SCALE, ICERYA SEYCHELLARUM (WESTWOOD) (HEMIPTERA: MONOPHLEBIDAE) ON MANGO TREES IN GIZA GOVERNORATE". Egyptian Journal of Agricultural Research, 95, 2, 2017, 679-689. doi: 10.21608/ejar.2017.148734
SERAG, A. (2017). 'EVALUATION OF ECONOMIC THRESHOLD LEVEL OF THE SEYCHELLES FLUTED SCALE, ICERYA SEYCHELLARUM (WESTWOOD) (HEMIPTERA: MONOPHLEBIDAE) ON MANGO TREES IN GIZA GOVERNORATE', Egyptian Journal of Agricultural Research, 95(2), pp. 679-689. doi: 10.21608/ejar.2017.148734
SERAG, A. EVALUATION OF ECONOMIC THRESHOLD LEVEL OF THE SEYCHELLES FLUTED SCALE, ICERYA SEYCHELLARUM (WESTWOOD) (HEMIPTERA: MONOPHLEBIDAE) ON MANGO TREES IN GIZA GOVERNORATE. Egyptian Journal of Agricultural Research, 2017; 95(2): 679-689. doi: 10.21608/ejar.2017.148734

EVALUATION OF ECONOMIC THRESHOLD LEVEL OF THE SEYCHELLES FLUTED SCALE, ICERYA SEYCHELLARUM (WESTWOOD) (HEMIPTERA: MONOPHLEBIDAE) ON MANGO TREES IN GIZA GOVERNORATE

Article 12, Volume 95, Issue 2, July 2017, Page 679-689  XML PDF (765.99 K)
Document Type: Original Article
DOI: 10.21608/ejar.2017.148734
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Author
ADL M. SERAG
Plant Protection Research Institute, ARC, Dokki, Giza, Egypt.
Abstract
the seychelles fluted scale, Icerya seychellarum (Westwood) (Monophlebidae: Hemiptera) is a serious pest of mango in Egypt, while it causes yield loss in most of mango orchards all over the country. The economic threshold level is a key factor to start control program. Results of statistical analysis shown that, when population density of I. seychellarum were (27.24 & 27.22) pre-adult / leaf) in March and June infestation, respectively. These numbers could be regarded as economic threshold of infestation with I. seychellarum on mango trees, at this level sufficient time for initiation of control measures. Population of I. seychellarum showed four annual generations and four activity peaks; a small peak in mid-March, intermediate peak in June, the third peak in August and last peak in mid-September.
Keywords
Icerya seychellarum; Economic Level; Mangifera indica
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