Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions
Performance under sub-optimal nitrogen (N) conditions, of early maturing maize cultivars bred for tolerance to drought and Striga parasitism in the Nigerian savanna is not known. This study evaluated the tolerance of selected early maturing drought and Striga-tolerant maize cultivars to low N condit...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Informa UK Limited
2019
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/99211 |
| _version_ | 1855542084903108608 |
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| author | Kamara, A. Ewansiha, S.U. Tofa, A.I. |
| author_browse | Ewansiha, S.U. Kamara, A. Tofa, A.I. |
| author_facet | Kamara, A. Ewansiha, S.U. Tofa, A.I. |
| author_sort | Kamara, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Performance under sub-optimal nitrogen (N) conditions, of early maturing maize cultivars bred for tolerance to drought and Striga parasitism in the Nigerian savanna is not known. This study evaluated the tolerance of selected early maturing drought and Striga-tolerant maize cultivars to low N conditions in Northern Nigeria. The cultivars were evaluated at 30 and 100 kg N ha−1. The varieties were compared with an improved maize cultivar that is not tolerant to drought and Striga. Maize grain yield was 26% higher at 100 kg N ha−1 than at 30 kg N ha−1 in 2010 and 161% higher100 kg Nha−1 than at 30 kg Nha−1 in 2011. The drought and Striga-tolerant varieties produced consistently higher yields than the non-drought-tolerant variety particularly at 30 kg Nha−1. These cultivars also accumulated higher amount of N, had higher N-uptake efficiency or N-utilization efficiency than the non-drought-tolerant variety ACR 95 TZE-COMP4 C3. Grains yield at low nitrogen rate was associated with high ears m−2, high dry matter accumulation, high grains m−2, suggesting that these traits are linked to low-N tolerance. The good performance of the drought-tolerant maize varieties under low N suggests that varieties developed for drought tolerance may be tolerant to low-N conditions. |
| format | Journal Article |
| id | CGSpace99211 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace992112024-05-01T08:19:57Z Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions Kamara, A. Ewansiha, S.U. Tofa, A.I. maize nitrogen utilization efficiency sudan savanna Performance under sub-optimal nitrogen (N) conditions, of early maturing maize cultivars bred for tolerance to drought and Striga parasitism in the Nigerian savanna is not known. This study evaluated the tolerance of selected early maturing drought and Striga-tolerant maize cultivars to low N conditions in Northern Nigeria. The cultivars were evaluated at 30 and 100 kg N ha−1. The varieties were compared with an improved maize cultivar that is not tolerant to drought and Striga. Maize grain yield was 26% higher at 100 kg N ha−1 than at 30 kg N ha−1 in 2010 and 161% higher100 kg Nha−1 than at 30 kg Nha−1 in 2011. The drought and Striga-tolerant varieties produced consistently higher yields than the non-drought-tolerant variety particularly at 30 kg Nha−1. These cultivars also accumulated higher amount of N, had higher N-uptake efficiency or N-utilization efficiency than the non-drought-tolerant variety ACR 95 TZE-COMP4 C3. Grains yield at low nitrogen rate was associated with high ears m−2, high dry matter accumulation, high grains m−2, suggesting that these traits are linked to low-N tolerance. The good performance of the drought-tolerant maize varieties under low N suggests that varieties developed for drought tolerance may be tolerant to low-N conditions. 2019-02-21 2019-01-29T15:28:07Z 2019-01-29T15:28:07Z Journal Article https://hdl.handle.net/10568/99211 en Limited Access Informa UK Limited Kamara, A., Ewansiha, S.U., & Tofa, A. (2019). Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions. Communications in Soil Science and Plant Analysis,1-15. |
| spellingShingle | maize nitrogen utilization efficiency sudan savanna Kamara, A. Ewansiha, S.U. Tofa, A.I. Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions |
| title | Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions |
| title_full | Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions |
| title_fullStr | Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions |
| title_full_unstemmed | Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions |
| title_short | Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions |
| title_sort | yield n uptake and n utilization of early maturing drought and striga tolerant maize varieties under low n conditions |
| topic | maize nitrogen utilization efficiency sudan savanna |
| url | https://hdl.handle.net/10568/99211 |
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