Variability in Winter Wheat (Triticum aestivum L.) Grain Yield Response to Nitrogen Fertilization in Long-Term Experiments

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dc.contributor.authorOmara, Peter
dc.contributor.authorAula, Lawrence
dc.contributor.authorDhillon, Jagmandeep S.
dc.contributor.authorOyebiyi, Fikayo
dc.contributor.authorEickhoff, Elizabeth M.
dc.contributor.authorNambi, Eva
dc.contributor.authorFornah, Alimamy
dc.contributor.authorCarpenter, Jonathan
dc.contributor.authorRaun, William
dc.date.accessioned2022-12-13T19:58:26Z
dc.date.available2022-12-13T19:58:26Z
dc.date.issued2020
dc.description.abstractCrop nitrogen (N) use is always affected by the variability in production environment. Dataset (2001 to 2014) from long-term winter wheat (Triticum aestivum L.) experiments at Lahoma and Stillwater, Oklahoma was used. Both experiments have a randomized complete block design with four replications, and fertilizer N was applied as urea pre-plant. Responsiveness of grain yield to maximum fertilizer N rate (112 kg ha−1 – Lahoma; 135 kg ha−1 – Stillwater) was compared with that from check plot (0 kg ha−1). The objective was to determine the relative influence of environment, management, and variety on winter wheat grain yield. The combined analysis of variance indicated that the main effect of year, treatment, location, and variety accounted for 29.3%, 21.2%, 3.1%, and 22.6%, respectively of the variance terms. Over the study period, the nonresponsiveness of winter wheat to fertilizer N accounted for 29% and 23% of grain yield at Lahoma and Stillwater, respectively where yield at maximum N rate did not significantly differ from check plot. This highlights the importance of random changes in a crop production environment and its influence in dictating the response to applied N fertilizer. Nitrogen fertilizer losses could be reduced by adopting in-season variable N application techniques.en_US
dc.identifier.citationPeter Omara, Lawrence Aula, Jagmandeep S. Dhillon, Fikayo Oyebiyi, Elizabeth M. Eickhoff, Eva Nambi, Alimamy Fornah, Jonathan Carpenter & William Raun (2020): Variability in Winter Wheat (Triticum￿aestivum L.) Grain Yield Response to Nitrogen Fertilization in Long-Term Experiments, Communications in Soil Science and Plant Analysis. https://doi.org/10.1080/00103624.2019.1709489en_US
dc.identifier.urihttps://doi.org/10.1080/00103624.2019.1709489
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/6272
dc.language.isoenen_US
dc.publisherCommunications in Soil Science and Plant Analysisen_US
dc.subjectWinter wheaten_US
dc.subjectVariabilityen_US
dc.subjectNitrogen fertilizationen_US
dc.subjectGrain yield responseen_US
dc.titleVariability in Winter Wheat (Triticum aestivum L.) Grain Yield Response to Nitrogen Fertilization in Long-Term Experimentsen_US
dc.typeArticleen_US
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