Development of Multiple and Cross-Resistance in Cotton Whitefly (Bemisia Tabaci Gennadius) Population in Gezira, Sudan
Journal Title: International Journal of Research in Agricultural Sciences - Year 2018, Vol 5, Issue 2
Abstract
The effects of endosulfan, deltamethrin and chlorpyrifos on the control of whitefly and development of cross and multiple resistances was investigated in laboratory bioassay with five sprays in the field with three insecticides, the laboratory bioassay test was done to the survival from field spray, each insecticides whitefly population exposed to other two insecticide, the results reveal that the endosulfan population developed high level of cross and multiple resistance after 3rdand 4thto deltamethrin and chlorpyrifos, respectively.The results reveal that when endosulfan used to control whitefly the chemical can be alternate with deltamethrin up to second spray, because after the 3rdspray the RR increase to 10 fold that means the deltamethrin cannot beuse after two sprays with endosulfan to control whitefly due the development of cross resistance. In case of chlorpyrifos same scenario will happen but after the 4thspray the RR increase to 10 fold means chlorpyrifos cannot be use after three sprays withendosulfan to control whitefly due to the development of multiple resistances.
Authors and Affiliations
Yousif Osman Hussein Assad, et al.
Keywords
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