Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa
Field experiments were conducted on hydromorphic soils at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria to determine the effects of crop-management practices on rice yield. The performances of three rice cultivars at different crop densities and weeding regimes were inv...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
1985
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/176288 |
| _version_ | 1855527107835199488 |
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| author | Akobundu, I. Ahissou, A. |
| author_browse | Ahissou, A. Akobundu, I. |
| author_facet | Akobundu, I. Ahissou, A. |
| author_sort | Akobundu, I. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Field experiments were conducted on hydromorphic soils at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria to determine the effects of crop-management practices on rice yield. The performances of three rice cultivars at different crop densities and weeding regimes were investigated. Weed weight decreased significantly as the interrow spacing was decreased from 45 cm to 15 cm. Tillering and the number of rice panicles also decreased with reduction in interrow spacing. When rice was kept weed free, there was no significant difference in yield between rice planted at 15, 30 and 45 cm interrow spacing. However, when the crop was weeded once only at 30 d.a.s., yield was significantly reduced at the widest spacing. Yield reduction caused by weed competition at the wide interrow spacing was more pronounced in the semi-dwarf cultivar than in the taller cultivars. All cultivars competed better with weeds when grown at 15 and 30 cm interrow spacing than at the wider spacing used by most peasant rice farmers in West Africa. |
| format | Journal Article |
| id | CGSpace176288 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1985 |
| publishDateRange | 1985 |
| publishDateSort | 1985 |
| record_format | dspace |
| spelling | CGSpace1762882025-11-11T10:29:40Z Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa Akobundu, I. Ahissou, A. rice weeding yields crops Field experiments were conducted on hydromorphic soils at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria to determine the effects of crop-management practices on rice yield. The performances of three rice cultivars at different crop densities and weeding regimes were investigated. Weed weight decreased significantly as the interrow spacing was decreased from 45 cm to 15 cm. Tillering and the number of rice panicles also decreased with reduction in interrow spacing. When rice was kept weed free, there was no significant difference in yield between rice planted at 15, 30 and 45 cm interrow spacing. However, when the crop was weeded once only at 30 d.a.s., yield was significantly reduced at the widest spacing. Yield reduction caused by weed competition at the wide interrow spacing was more pronounced in the semi-dwarf cultivar than in the taller cultivars. All cultivars competed better with weeds when grown at 15 and 30 cm interrow spacing than at the wider spacing used by most peasant rice farmers in West Africa. 1985-03 2025-09-01T11:38:46Z 2025-09-01T11:38:46Z Journal Article https://hdl.handle.net/10568/176288 en Limited Access application/pdf Akobundu, I.O. & Ahissou, A. (1985). Effect of interrow spacing and weeding frequency on the performance of selected rice cultivars on hydromorphic soils of West Africa. Crop protection, 4(1), 71-76. |
| spellingShingle | rice weeding yields crops Akobundu, I. Ahissou, A. Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa |
| title | Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa |
| title_full | Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa |
| title_fullStr | Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa |
| title_full_unstemmed | Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa |
| title_short | Effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of West Africa |
| title_sort | effect of interrow spacing and weeding frequency on the performance of selected rice cultivals on hydromorphic soils of west africa |
| topic | rice weeding yields crops |
| url | https://hdl.handle.net/10568/176288 |
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