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Evaluation of Certain Synthetic and Natural Pesticides Against Whitefly Bemisia tabaci (Genn.) on Green Bean and Effect on Honeybee Apis mellifera L.
2023
Ahmad, Sharihan | Abdelghany, Walaa | Ahmed, Ahmed | Abdelmegeed, Sawsan
The green bean crop (Phaseolus vulgaris) is infested with many insects such as whiteflies (Bemisia tabaci). An investigation was carried out to study the insecticidal activity of whitefly (Bemisia tabaci), five pesticides were used, namely Thiamothoxam, Sulfoxaflor, Spirotetramat, Pymetrozine, and Flonicamid, and three commercial natural pesticides, namely Superrego, Topnine, and Bernastar. Pesticides and natural pesticides were sprayed during the two seasons of 2020 and 2021. The obtained results in terms of the reduction rate of the insects' number were as follows: The highest rate of reduction appeared in Thiamothoxam and Sulfoxaflor treatments, where it reached above 80%, while the other pesticides were in the range of 40% to 60%, and the lowest reduction rate was 34.33% and 36.00 % for Bernastar during season 2020 and 2021 respectively. When evaluating the toxicity of these pesticides and natural pesticides against honeybees (Apis mellifera), the pesticides did not reveal any toxicity to honeybees, except for Thiamothoxam, Sulfoxaflor, and Superrego The LC50 and LD50 values against honeybees were 0.2 ppm and 0.000005µg/one honeybee for Thiamothoxam, 4.5 ppm and 0.0001125 µg/one bee for Sulfoxaflor, and 0.95 ppm and 0.00002375 µg /one bee for Superego respectively.
Mostrar más [+] Menos [-]Evaluation of Brassica rapa, rape seed extracts for the control of cowpea beetle, Callosobruchus maculatus, F
2001
Ahmed, S.M.S. | Shemais, S.A. | Kassis, S.R. (Ministry of Agriculture, Cairo (Egypt). Plant Protection Research Inst.)
evelopment and improvement of some plant associations at the North Western cost of Egypt. 3.-effect of interaction between Acacia shrubs age and location
2000
NourEl-Din, N.A. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture)El-Hakeem, M.S. | Abd-Alla, S.O.M.
Studies on the combined effect of Sabadilla and Bacillus thuringiensis on the 1 st instar larvae of Pectinophora gossypiella and Earias insulana
1996
Wahba, M.E. | El-Gemeiy, H.M. | Naguib, S.M. | Rofail, M.F. | El-Gogary, O.A. (Ministry of Agriculture, Cairo (Egypt). Plant Protection Research Inst.)
[Bioresidual activity of certain plant extracts on some stored grain insects, in relation to seed viability]
1993
Zidan, Z.H. | Gomaa, A.A. | Afifi, F.A. (Ain-Shams Univ., Cairo (Egypt). Faculty of Agriculture) | Ahmed, S.M.S. | Fam, E.Z.
