Population Fluctuation and Influence of Different Management Practices Against Bemisia tabaci (Genn.) on Cucumber Plant Under Greenhouse Condition.

Ismail, Fatma, S.; El Sharkawy, A. Z.; Farghaly, D. S.; Ammar, Mona, I.; El Kady, Enayat, M.

doi:10.21608/eajbsf.2020.119103

Population Fluctuation and Influence of Different Management Practices Against Bemisia tabaci (Genn.) on Cucumber Plant Under Greenhouse Condition.

Document Type : Original Article

Authors

¹ Zoology Department- Faculty of Science (Girls) - Al-Azhar University

² Plant Protection Research Institute, ARC. Dokki, Giza, Egypt

10.21608/eajbsf.2020.119103

Abstract

The population fluctuation of Bemisia tabaci (Genn.) studied on winter plantation of cucumber plant Cucumis sativus L. of 2018/2019& 2019/2020 seasons under greenhouse condition at Giza governorate, Egypt and, the insecticidal activities of two heavy nano metals (cu++ & mg++) and two commercial oils (camphor& Piper nigrum), its concentrations compared with recommended bio-insecticide (biofly) and recommended chemical insecticide (actara) were evaluated against B. tabaci (eggs & immature stages). The high infestation were in 2^nd week of November and 2^nd week of December with 428 eggs/10 leaves & 390 nymphs/10 leaves, respectively in season 2018 /2019, and recoded highly infestation in 2^nd and 4^th week of November with 390 eggs/10 leaves & 423 nymphs/10 leaves, respectively in the season 2019/2020. Camphor oil was the most effective with mortality percent 97.6% followed by Piper nigrum oil (93.6%) compared with chemical insecticide (actara).

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