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    Plant parasitic nematode populations on upland and hydromorphic rice in Cote d'Ivoire: relationship with moisture availability and crop development on a valley slope

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    Date
    2001-03
    Author
    Coyne, D.
    Smith, M.
    Plowright, R.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    The influence of underlying hydrology and overhead irrigation on plant parasitic nematode populations in upland and hydromorphic rice was examined during three successive seasons on a valley slope at the West Africa Rice Development Association station, Côte d’Ivoire. Nematode population densities and species composition were clearly affected by hydrology. Nematode populations in hydromorphic rice were characterised by Basiria spp., Coslenchus spp. and Filenchus spp. (combined) and Paratrichodorus minor. Upland rice was characterised by Scutellonema clathricaudatum, Pratylenchus zeae, and Mesocriconema tescorum. Rotylenchulus spp. and Heterodera sacchari being concentrated in the lower upland rice area whereas Helicotylenchus spp. and Meloidogyne incognita, were distributed over the hill slope. For many species peak population density shifted, relative to the slope, between sowing and harvest. Excepting the disappearance of rarer species, only H. sacchari population densities were correlated with time, increasing with duration of the experiment. There was little evidence that overhead irrigation had any influence on nematode species composition, but it influenced population densities of ectoparasitic nematodes and had a strong positive influence on yield. Yield was also positively correlated with proximity to the water table and declined as the experiment progressed. Because of the complexity of nematode communities it was difficult to determine the effects of individual species on plant growth characters or yield.
    https://doi.org/10.1016/S0167-8809(00)00193-6
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4353
    Non-IITA Authors ORCID
    Daniel Coynehttps://orcid.org/0000-0002-2030-6328
    Digital Object Identifier (DOI)
    https://doi.org/10.1016/S0167-8809(00)00193-6
    Research Themes
    NATURAL RESOURCE MANAGEMENT
    Agrovoc Terms
    Irrigation; Nematodes; Community Development; Oryza Sativa; Species; Composition; Rice; Ecosystems; Water Availability; West Africa
    Regions
    Africa; West Africa
    Countries
    Cote D'Ivoire
    Journals
    Agriculture, Ecosystems & Environment
    Collections
    • Journal and Journal Articles4835
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