Aref,, S., Azab, A. (2004). SEASONAL ABUNDANCE AND REDUCTION PERCENTAGES OF THE PINK BOLLWORM, Pectinophora gossypiell~ (SAUND.) IN Trichogramma RELEASING ZONES. Journal of Plant Protection and Pathology, 29(9), 5291-5298. doi: 10.21608/jppp.2004.240011
S. A. Aref,; A. M. A. Azab. "SEASONAL ABUNDANCE AND REDUCTION PERCENTAGES OF THE PINK BOLLWORM, Pectinophora gossypiell~ (SAUND.) IN Trichogramma RELEASING ZONES". Journal of Plant Protection and Pathology, 29, 9, 2004, 5291-5298. doi: 10.21608/jppp.2004.240011
Aref,, S., Azab, A. (2004). 'SEASONAL ABUNDANCE AND REDUCTION PERCENTAGES OF THE PINK BOLLWORM, Pectinophora gossypiell~ (SAUND.) IN Trichogramma RELEASING ZONES', Journal of Plant Protection and Pathology, 29(9), pp. 5291-5298. doi: 10.21608/jppp.2004.240011
Aref,, S., Azab, A. SEASONAL ABUNDANCE AND REDUCTION PERCENTAGES OF THE PINK BOLLWORM, Pectinophora gossypiell~ (SAUND.) IN Trichogramma RELEASING ZONES. Journal of Plant Protection and Pathology, 2004; 29(9): 5291-5298. doi: 10.21608/jppp.2004.240011
SEASONAL ABUNDANCE AND REDUCTION PERCENTAGES OF THE PINK BOLLWORM, Pectinophora gossypiell~ (SAUND.) IN Trichogramma RELEASING ZONES
Plant Pretectlon Research Institute, Agrlc. Res. Center, Dokkl-Giza, Egypt.
Abstract
The present investigation was directed to study the seasonal abundance and percent of reduction of the pink bollworm, Pectinophora gossypielfa in TrichogrammB releasing zones in cotton fields during 2003 cotton season. Flight activity studies using pheromone traps in the two locations (100 fed.Jlocation) far side 30 kilometers approximately at Katr EI-Sheikh district were evaluated. The release of the egg parasitoid started on June 21st till September 2nd at about 10 days intervals (eight waves of releases). The results revealed that the percent of reduction of pink bollworm male moths in treatment units ranged from 33.6 % to 29 0/0, while that of reduction in larval numbers in green bolls ranged from 38 % to 40 0/0.
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