Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting
Soil moisture deficit frequently occurs at the onset of the growing season and may cause crop failure. Resowing with early maturing varieties has often been the only alternative, besides transplanting. To assess the relative efficiency of the two resuce methods two sorghum (Sorghum bicolor (L.) Moen...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
African Journals Online
1997
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/96037 |
| _version_ | 1855519949009715200 |
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| author | Tenkouano, A. Chantereau, J. Sereme, P. Touré, A. |
| author_browse | Chantereau, J. Sereme, P. Tenkouano, A. Touré, A. |
| author_facet | Tenkouano, A. Chantereau, J. Sereme, P. Touré, A. |
| author_sort | Tenkouano, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Soil moisture deficit frequently occurs at the onset of the growing season and may cause crop failure. Resowing with early maturing varieties has often been the only alternative, besides transplanting. To assess the relative efficiency of the two resuce methods two sorghum (Sorghum bicolor (L.) Moench) cultivars, ‘IRAT204' (day-neutral) and ‘Nazongala' (photoperiod-sensitive), were grown in seven drought-prone environments in Western Africa. Grain yield of both cultivars was reduced by delayed sowing for both cultivars. Yield reduction was lowest when transplanting or resowing was done not later than two weeks from normal sowing time. Compensation levels were higher with the cultivar ‘IRAT204' than with ‘Nazongala'. While transplanting could contribute to partial yield loss recovery under erratic rainfall environments, it should not be considered as an option beyond four weeks from the normal sowing dates with day-neutral cultivars, due to their lack of phonological plasticity. |
| format | Journal Article |
| id | CGSpace96037 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1997 |
| publishDateRange | 1997 |
| publishDateSort | 1997 |
| publisher | African Journals Online |
| publisherStr | African Journals Online |
| record_format | dspace |
| spelling | CGSpace960372024-05-15T05:11:26Z Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting Tenkouano, A. Chantereau, J. Sereme, P. Touré, A. erratic rainfall photoperiodism yield loss compensation sorghum bicolor transplanting pluviosite erratique repiquage Soil moisture deficit frequently occurs at the onset of the growing season and may cause crop failure. Resowing with early maturing varieties has often been the only alternative, besides transplanting. To assess the relative efficiency of the two resuce methods two sorghum (Sorghum bicolor (L.) Moench) cultivars, ‘IRAT204' (day-neutral) and ‘Nazongala' (photoperiod-sensitive), were grown in seven drought-prone environments in Western Africa. Grain yield of both cultivars was reduced by delayed sowing for both cultivars. Yield reduction was lowest when transplanting or resowing was done not later than two weeks from normal sowing time. Compensation levels were higher with the cultivar ‘IRAT204' than with ‘Nazongala'. While transplanting could contribute to partial yield loss recovery under erratic rainfall environments, it should not be considered as an option beyond four weeks from the normal sowing dates with day-neutral cultivars, due to their lack of phonological plasticity. Les déficits hydriques interviennent fréquemment en début d'hivernage et causent souvent des manques à la levée. En dehors du repiquage, le seul recours des paysans est de resemer avec des variétés plus précoces. En vue de comparer l'efficacité relative des deux méthodes de sauvegarde, deux variétés de sorghum (#Sorghum bicolor# (L.) Moench), 'IRAT 204' (non photosensible) et 'Nazongala' (photosensible) ont été évaluées dans sept sites en Afrique de l'Ouest. Les rendements obtenus avec le resemis ou le repiquage ont été certes moins élevés que ceux résultant du semis à la date optimale, mais le niveau de compensation a été plus important avec le repiquage, particulièrement lorsqu'il avait été fait au plus tard deux semaines après la date normale de semis. Les taux de compensation partielle de rendement ont été plus élevés chez 'IRAT 204' que chez 'Nazongala'. Bien que le repiquage puisse contribuer à une réduction des pertes en zones de pluviométrie erratique, il est déconseillé au-delà de quatre semaines après la date normale de semis, notamment pour les variétés non photosensibles, du fait de leur manque de plasticité phénologique. 1997 2018-07-05T06:30:30Z 2018-07-05T06:30:30Z Journal Article https://hdl.handle.net/10568/96037 en Limited Access African Journals Online Tenkouano, A., Chantereau, J., Sereme, P. & Touré, A. (1997). Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting. African Crop Science Journal, 5(3), 259-266. |
| spellingShingle | erratic rainfall photoperiodism yield loss compensation sorghum bicolor transplanting pluviosite erratique repiquage Tenkouano, A. Chantereau, J. Sereme, P. Touré, A. Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting |
| title | Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting |
| title_full | Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting |
| title_fullStr | Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting |
| title_full_unstemmed | Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting |
| title_short | Comparative response of a day-neutral and photoperiod-sensitive sorghum to delayed sowing or transplanting |
| title_sort | comparative response of a day neutral and photoperiod sensitive sorghum to delayed sowing or transplanting |
| topic | erratic rainfall photoperiodism yield loss compensation sorghum bicolor transplanting pluviosite erratique repiquage |
| url | https://hdl.handle.net/10568/96037 |
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