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    Optimum stand density of tropical maize varieties: an on-farm evaluation of grain yield responses in the Nigerian Savanna

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    Journal Article (1.598Mb)
    Date
    2022
    Author
    Adnan, A.A.
    Diels, J.
    Jibrin, J.M.
    Kamara, A.
    Craufurd, P.
    Shaibu, A.S.
    Garba, I.I.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Selection of appropriate sowing density is an important yield enhancing management decision in maize (Zea mays L.) production particularly in rainfed conditions. This study aimed at evaluating the optimum stand densities (OSDs) of 10 recently released maize varieties under different crop management decisions and environments. Ten maize varieties of varying characteristics were planted in the Northern Guinea Savanna of Nigeria across 30 farmer’s fields in the rainy seasons of 2016 and 2017 under three stand densities: 2.6, 5.3, and 6.6 plants m−2. Grain yield and yield components were greatest under the high density in both years across all locations. The intermediate maturing varieties produced higher grain yields compared to the early and late maturing varieties in both years and locations. The environmental indices from the Factor Analytic Model showed 20% of the fields were optimal, 28.3% moderate, 31.7% poor, and 20% were very poor environments. Increasing planting density did not significantly affect the grain yield of the varieties in very poor environments. A linear increase in grain yield was observed in moderate and optimum environments with every increase in stand density for all varieties except Sammaz 32, however, optimum planting densities could not be reached for all the varieties. Therefore, tropical maize varieties should be planted under specific densities that account for environmental and management conditions to maximize yield.
    https://dx.doi.org/10.3389/fagro.2022.773012
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7409
    IITA Authors ORCID
    Alpha Kamarahttps://orcid.org/0000-0002-1844-2574
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.3389/fagro.2022.773012
    Research Themes
    Plant Production and Health
    IITA Subjects
    Agronomy; Food Security; Maize; Plant Breeding; Plant Production
    Agrovoc Terms
    Sowing; Density; Maize; Varieties; Tolerance; Spacing; Nigeria
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Frontiers in Agronomy
    Collections
    • Journal and Journal Articles4835
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