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    Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions

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    S19ArtKamaraYieldInthomDev.pdf (1.376Mb)
    Date
    2019-01-22
    Author
    Kamara, A.
    Ewansiha, S.U.
    Tofa, A.I.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/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.
    https://dx.doi.org/10.1080/00103624.2018.1563095
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5213
    Non-IITA Authors ORCID
    Alpha Kamarahttps://orcid.org/0000-0002-1844-2574
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1080/00103624.2018.1563095
    Research Themes
    PLANT PRODUCTION & HEALTH
    IITA Subjects
    Plant Health; Plant Production
    Agrovoc Terms
    Maize; Nitrogen; Utilization; Efficiency; Sudan; Savanna
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Communications in Soil Science and Plant Analysis
    Collections
    • Journal and Journal Articles4835
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