Efficacy of Some Insecticides Against Whitefly, Bimicia tabaci (Genn.), White Butterfly, Pieris rapae (Linn.) and Their Associated Natural Enemies on Brassica Fields

Faculty Agriculture Year: 2023
Type of Publication: ZU Hosted Pages:
Authors:
Mohammed Abdelaal Hendawi
Journal: Egyptian Academic Journal of Biological Sciences15(2): 99–106(2023). Egyptian Academic Journal of Biological Sciences15(2): 99–106(2023). Volume:
Keywords : Efficacy , Some Insecticides Against Whitefly, Bimicia    
Abstract:
The aim of this study was to investigate the efficiency of four pesticides thiamethoxam, emamectin benzoate, lambadacyalothrin and methomyl (Lannate) against brassica plant pests and their side effects on the associated natural enemies infesting brassica plants under field condition during the two growing seasons, 2021 and 2022 :in Sharkia governorate ,Egypt. The obtained results showed that the thiamethoxam compound recorded the highest reduction percentage against Bemicia tabaci after 1, 7 and 10 days of spray. Also, emamectin benzoate and lambadacyalothrin recorded the highest reduction percentage against Pieris rapae after 1, 7 and 10 days from treatment. The side effect was a significantly effectual reduction in population predators, where's methomyl gave efficacy against Chrysoper lacarnea, also emamectin benzoate gave efficacy on Cocconella septumpunctata, while other compounds showed a lower effect in population predators.
    
     
 
       

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