Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania
A novel butenolide insecticide—flupyradifurone (Sivanto SL 200)—was evaluated for efficacy against cassava-colonizing Bemisia tabaci whitefly under laboratory, screenhouse and field conditions. LC50 values from leaf disc spray assays were comparable for both flupyradifurone (12.7 g a.i/100 L) and im...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/126698 |
| _version_ | 1855539331450535936 |
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| author | Issa, K.A. Wosula, E.N. Stephano, F. Legg, James P. |
| author_browse | Issa, K.A. Legg, James P. Stephano, F. Wosula, E.N. |
| author_facet | Issa, K.A. Wosula, E.N. Stephano, F. Legg, James P. |
| author_sort | Issa, K.A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A novel butenolide insecticide—flupyradifurone (Sivanto SL 200)—was evaluated for efficacy against cassava-colonizing Bemisia tabaci whitefly under laboratory, screenhouse and field conditions. LC50 values from leaf disc spray assays were comparable for both flupyradifurone (12.7 g a.i/100 L) and imidacloprid (12.6 g a.i/100 L). Both insecticides caused high levels of adult whitefly mortality in leaf disc and leaf dip assays when compared to untreated controls. In screenhouse-based trials, longer soaking (60 min) with flupyradifurone or imidacloprid was more effective than shorter soaking durations (15 or 30 min). In field spraying experiments, flupyradifurone significantly reduced whiteflies, and both insecticides demonstrated powerful knockdown effects on whitefly adult abundances over a period up to 24 h. Single cutting dip application of flupyradifurone reduced whitefly adult abundance by 2 to 6 times, and nymphs by 2 to 13 times. Lower whitefly abundances resulting from insecticide application reduced the incidence of CMD or CBSD. In addition, in field experiments, whiteflies were fewer during the long rainy season (Masika) and on cassava variety Mkuranga1. The findings from this study demonstrate that cutting dips with flupyradifurone could be incorporated as a management tactic against cassava whiteflies. This would ideally be combined in an IPM strategy with other cassava virus and virus vector management tactics including host-plant resistance, phytosanitation and the use of clean seed. |
| format | Journal Article |
| id | CGSpace126698 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1266982025-12-08T10:29:22Z Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania Issa, K.A. Wosula, E.N. Stephano, F. Legg, James P. cassava bemisia tabaci food security climate change plant diseases tanzania A novel butenolide insecticide—flupyradifurone (Sivanto SL 200)—was evaluated for efficacy against cassava-colonizing Bemisia tabaci whitefly under laboratory, screenhouse and field conditions. LC50 values from leaf disc spray assays were comparable for both flupyradifurone (12.7 g a.i/100 L) and imidacloprid (12.6 g a.i/100 L). Both insecticides caused high levels of adult whitefly mortality in leaf disc and leaf dip assays when compared to untreated controls. In screenhouse-based trials, longer soaking (60 min) with flupyradifurone or imidacloprid was more effective than shorter soaking durations (15 or 30 min). In field spraying experiments, flupyradifurone significantly reduced whiteflies, and both insecticides demonstrated powerful knockdown effects on whitefly adult abundances over a period up to 24 h. Single cutting dip application of flupyradifurone reduced whitefly adult abundance by 2 to 6 times, and nymphs by 2 to 13 times. Lower whitefly abundances resulting from insecticide application reduced the incidence of CMD or CBSD. In addition, in field experiments, whiteflies were fewer during the long rainy season (Masika) and on cassava variety Mkuranga1. The findings from this study demonstrate that cutting dips with flupyradifurone could be incorporated as a management tactic against cassava whiteflies. This would ideally be combined in an IPM strategy with other cassava virus and virus vector management tactics including host-plant resistance, phytosanitation and the use of clean seed. 2022-10-12 2023-01-09T08:32:59Z 2023-01-09T08:32:59Z Journal Article https://hdl.handle.net/10568/126698 en Open Access application/pdf MDPI Issa, K.A., Wosula, E.N., Stephano, F. & Legg, J. (2022). Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania. Insects, 13(10): 920, 1-18. |
| spellingShingle | cassava bemisia tabaci food security climate change plant diseases tanzania Issa, K.A. Wosula, E.N. Stephano, F. Legg, James P. Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania |
| title | Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania |
| title_full | Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania |
| title_fullStr | Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania |
| title_full_unstemmed | Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania |
| title_short | Evaluation of the efficacy of Flupyradifurone against Bemisia tabaci on cassava in Tanzania |
| title_sort | evaluation of the efficacy of flupyradifurone against bemisia tabaci on cassava in tanzania |
| topic | cassava bemisia tabaci food security climate change plant diseases tanzania |
| url | https://hdl.handle.net/10568/126698 |
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