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    Yam tuber and maize grain yield response to cropping system intensification in south-west Nigeria

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    U18ArtEnesiYamInthomDev.pdf (1.558Mb)
    Date
    2018
    Author
    Enesi, R.O.
    Hauser, S.
    López Montez, A.
    Osonubi, O.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Four factorial trials were conducted with yam (Dioscorea rotundata Poir.) at Ibadan, Nigeria from 2013 to 2015, investigating effects of (1) tillage (2) fertilizer (3) intercropping (4) yam plant densities. Yam tuber yields varied between years (2013: 16.44 Mg ha−1; 2014: 10.08 Mg ha−1; 2015 26.61 Mg ha−1). In 2013 neither tillage nor fertilizer affected tuber yields. In 2014 tillage increased yields (+25.4%, P < 0.0001), fertilizer reduced yield (−10.5%; P = 0.0046). In 2015 tillage increased tuber yields by 8.1% (ns), fertilizer application increased yield (+17.5%, P = 0.0017). Across the years, tuber yields increased (P < 0.01) with increasing yam density with a constant increase in 2013 up to the highest density, yet yields leveled out above 14,815 plants ha−1 in 2014 and 2015. Intercropping with maize (66,667 plants ha−1) reduced tuber yield by 42.62% in 2013, 44.52% in 2014 and 30.68% in 2015 (P < 0.01 all years) across all yam densities. Maize grain yield was higher in sole crop in 2 years. Fertilizer increased yields in all years (P < 0.0001). Maize yield had no response to the yam densities. Ridging had a negative effect on grain yield in 2015 (−0.3 Mg ha−1, P = 0.0002). Increasing plant density appears a safe measure to increase yam yields.
    https://dx.doi.org/10.1080/03650340.2017.1404580
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5187
    Non-IITA Authors ORCID
    Stefan Hauserhttps://orcid.org/0000-0002-6329-7783
    Antonio Jose Lopez-Monteshttps://orcid.org/0000-0001-5801-2475
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1080/03650340.2017.1404580
    Research Themes
    NATURAL RESOURCE MANAGEMENT
    IITA Subjects
    Crop Systems; Farming Systems; Maize; Natural Resource Management; Yam
    Agrovoc Terms
    Plant Population; Intercropping; Fertilizers; Yams; Dioscorea Rotundata; Maize; Nigeria
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Archives of Agronomy and Soil Science
    Collections
    • Journal and Journal Articles4835
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