Dose transfer of an oilbased formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial
A cotton field was used to set up an arena trial for investigating the dose transfer of oil-based ultra-low-volume sprays of Metarhizium anisopliae (Metchnikoff) Sorokin to the cotton bollworm Helicoverpa armigera (Hübner). Two doses of conidia (75 and 50 g/ha, being 3.75 × 1012 and 2.5 × 1012 conid...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2011
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/88176 |
| _version_ | 1855518546685067264 |
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| author | Kpindou, O.D. Djegui, D.A. Glitho, I. A. Tamo, Manuele |
| author_browse | Djegui, D.A. Glitho, I. A. Kpindou, O.D. Tamo, Manuele |
| author_facet | Kpindou, O.D. Djegui, D.A. Glitho, I. A. Tamo, Manuele |
| author_sort | Kpindou, O.D. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A cotton field was used to set up an arena trial for investigating the dose transfer of oil-based ultra-low-volume sprays of Metarhizium anisopliae (Metchnikoff) Sorokin to the cotton bollworm Helicoverpa armigera (Hübner). Two doses of conidia (75 and 50 g/ha, being 3.75 × 1012 and 2.5 × 1012 conidia/ha, respectively) formulated in 2 litres (70:30, kerosene–peanut oil) were applied using a Berthoud ‘Micro Ulva’ to three groups of larvae of cotton bollworms positioned in three rows downwind of a single spray line. Both the distribution of the droplets and the effect of direct contact with spray droplets were quantified. The mean number of droplets decreased from 416 ( ± 60) droplets per cm2 (line 1; 0.4 m) to 45 ( ± 36) droplets per cm2 (line 3; 5 m). To achieve 50% mortality, >10 and >13 days were necessary for 75 and 50 g/ha, respectively. From day 15, the difference in mortality rates was significant between the two treatments. At line 3 (5 m), at 12 days after application, the mortality rate reached 52% for 75 g/ha and 47% for 50 g/ha. The results are discussed in view of optimizing the application of the biopesticides. |
| format | Journal Article |
| id | CGSpace88176 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| record_format | dspace |
| spelling | CGSpace881762023-02-15T06:46:30Z Dose transfer of an oilbased formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial Kpindou, O.D. Djegui, D.A. Glitho, I. A. Tamo, Manuele helicoverpa armigera metarhizium anisopliae biopesticides ultralow volume spraying A cotton field was used to set up an arena trial for investigating the dose transfer of oil-based ultra-low-volume sprays of Metarhizium anisopliae (Metchnikoff) Sorokin to the cotton bollworm Helicoverpa armigera (Hübner). Two doses of conidia (75 and 50 g/ha, being 3.75 × 1012 and 2.5 × 1012 conidia/ha, respectively) formulated in 2 litres (70:30, kerosene–peanut oil) were applied using a Berthoud ‘Micro Ulva’ to three groups of larvae of cotton bollworms positioned in three rows downwind of a single spray line. Both the distribution of the droplets and the effect of direct contact with spray droplets were quantified. The mean number of droplets decreased from 416 ( ± 60) droplets per cm2 (line 1; 0.4 m) to 45 ( ± 36) droplets per cm2 (line 3; 5 m). To achieve 50% mortality, >10 and >13 days were necessary for 75 and 50 g/ha, respectively. From day 15, the difference in mortality rates was significant between the two treatments. At line 3 (5 m), at 12 days after application, the mortality rate reached 52% for 75 g/ha and 47% for 50 g/ha. The results are discussed in view of optimizing the application of the biopesticides. 2011 2017-10-05T07:42:46Z 2017-10-05T07:42:46Z Journal Article https://hdl.handle.net/10568/88176 en Limited Access Kpindou, O. D., Djegui, D. A., Glitho, I. A. & Tamo, M. (2011). Dose transfer of an oil-based formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial. International Journal of Tropical Insect Science, 31(4), 262-268. |
| spellingShingle | helicoverpa armigera metarhizium anisopliae biopesticides ultralow volume spraying Kpindou, O.D. Djegui, D.A. Glitho, I. A. Tamo, Manuele Dose transfer of an oilbased formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial |
| title | Dose transfer of an oilbased formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial |
| title_full | Dose transfer of an oilbased formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial |
| title_fullStr | Dose transfer of an oilbased formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial |
| title_full_unstemmed | Dose transfer of an oilbased formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial |
| title_short | Dose transfer of an oilbased formulation of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) sprays to cotton bollworm in an arena trial |
| title_sort | dose transfer of an oilbased formulation of metarhizium anisopliae hypocreales clavicipitaceae sprays to cotton bollworm in an arena trial |
| topic | helicoverpa armigera metarhizium anisopliae biopesticides ultralow volume spraying |
| url | https://hdl.handle.net/10568/88176 |
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