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    Effects of tropical weeds on yield in white yam (Dioscorea rotundata Poir)

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    S89ArtUnammaEffectsInthomNodev.pdf (1.549Mb)
    Date
    1989
    Author
    Unamma, R.P.
    Akobundu, I.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    The effects of tropical weeds on the yield of while yam were studied outdoors in wooden boxes. When the foliage and roots of weeds were in physical contact with the crop until harvest (full interference), tuber yield of yam was reduced by 76–79% of that obtained under weed‐free conditions over 3 years of study. When there was no physical contact between roots of crop and weeds, the leachate from the weed zone caused tuber yield reductions of 42, 40 and 38% in 1978, 1979 and 1980, respectively, when it was applied to the yam zone. This leachate also reduced leaf area index (LAI) in the yam crop but the adverse effects on yam root and shoot biomass were less pronounced. This technique made it possible to separate competitive interference from allelopathic interference of tropical weeds with the yam crop.
    https://doi.org/10.1111/j.1365-3180.1989.tb00833.x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5000
    Digital Object Identifier (DOI)
    https://doi.org/10.1111/j.1365-3180.1989.tb00833.x
    IITA Subjects
    Weeds; Yam; Food Security; Crop Husbandry; Post-Harvesting Technology; Nutrition
    Agrovoc Terms
    Weeds; Yams; Harvesting; Soil; Nutrients
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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