| dc.contributor.author | Abe, A. |
| dc.contributor.author | Adetimirin, V. |
| dc.contributor.author | Menkir, A. |
| dc.contributor.author | Moose, S. |
| dc.contributor.author | Olaniyan, A. |
| dc.date.accessioned | 2019-12-04T11:03:45Z |
| dc.date.available | 2019-12-04T11:03:45Z |
| dc.date.issued | 2013 |
| dc.identifier.citation | Abe, A., Adetimirin, V., Menkir, A., Moose, S. & Olaniyan, A. (2013). Performance of tropical maize hybrids under conditions of low and optimum levels of nitrogen fertilizer application–grain yield, biomass production and nitrogen accumulation. Maydica 58(2):141-150. |
| dc.identifier.issn | 0025-6153 |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/1220 |
| dc.description.abstract | Nitrogen (N) is the most limiting mineral nutrient in the soils of the major maize producing areas of West and Central Africa. Low soil N and sub-optimal application of N fertilizers lead to N deficiency and poor grain yield (GY) in maize. Maize varieties with improved grain yield under low soil N and increased performance under optimal N availability could be beneficial to low input agriculture. This study evaluated the performance of a selection of experimental and commercial hybrids under suboptimal and optimal N fertilizer applications. Significant differences were observed among the hybrids, as well as significant interactions between hybrid and N level for GY and other measured attributes, with the severity of variation increasing as the level of N decreases. Mean GY reductions across the years was 76.5% at no-N and 35.4% at low-N. Depending on N treatment, GY varied from 0.48 to 4.42 Mg ha-1, grain N content from 0.17 to 1.26 g plant-1, total N content at harvest from 0.33 to 2.00 g plant-1, above ground biomass at silking from 30.6 to 91.2 g plant-1 and at maturity from 39.9 to 191.1 g plant-1. Number of kernels was the GY component most severely reduced by N stress and had significant (p = 0.001) positive correlation with GY at all N levels. Six hybrids (4001/4008, KU1409/4008, KU1409/9613, 4008/1808, 4058/Fun 47-4, and 1824/9432) which showed consistent above average grain yields under no-N, low-N, high-N and across N levels were found and their use could further be investigated. |
| dc.format.extent | 141-150 |
| dc.language.iso | en |
| dc.subject | Maize |
| dc.subject | Low Input Agriculture |
| dc.subject | Nitrogen Fertilizer |
| dc.subject | Hybrid |
| dc.title | Performance of tropical maize hybrids under conditions of low and optimum levels of nitrogen fertilizer application grain yield, biomass production and nitrogen accumulation |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.crp | Maize |
| cg.contributor.affiliation | University of Ibadan |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.contributor.affiliation | University of Illinois |
| cg.coverage.region | Africa |
| cg.coverage.region | West Africa |
| cg.coverage.region | Central Africa |
| cg.coverage.country | Nigeria |
| cg.isijournal | ISI Journal |
| cg.authorship.types | CGIAR and developing country institute |
| cg.iitasubject | Maize |
| cg.journal | Maydica |
| cg.howpublished | Formally Published |
| cg.accessibilitystatus | Open Access |
| local.dspaceid | 78468 |
| cg.targetaudience | Scientists |
