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    Organic maize and bean farming enhances free-living nematode dynamics in sub-Saharan Africa

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    Journal Article (1.549Mb)
    Date
    2022-01-03
    Author
    Atandi, J.
    Adamtey, N.
    Kiriga, A.
    Karanja, E.
    Musyoka, M.W.
    Matheri, F.
    Tanga, C.M.
    Coyne, D.
    Fiaboe, K.
    Bautze, D.
    Haukeland, S.
    Type
    Journal Article
    Review Status
    Internal Review
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Despite their important ecological roles for soil health and soil fertility, free-living nematodes (FLN) have received relatively limited research attention. The present study evaluated the community structure and diversity of FLN in a field setting. The experiments were conducted in on-farm and on-station field plots sown to maize (Zea mays) and beans (Phaseolus vulgaris) under four cropping practices. These farming systems included organic (compost and biopesticide use), conventional (synthetic fertilizer and pesticide applications), farmer practice (organic and synthetic amendments) and a control (non-amended plots). Nineteen genera of free living nematodes, belonging to bacterivores, fungivores, omnivores and predators were recorded. Among these, bacterivores (Cephalobidae and Rhabditidae) were the most dominant group in the organic systems when compared to the conventional and control systems. Farming systems influenced the abundance and diversity of free living nematodes, with the organic farming system having higher values of maturity, enrichment and structural indices than other farming systems. This would indicate greater stability in soil health and improved soil fertility. This implies that the organic farming systems play a key role in improving the biodiversity and population buildup of FLN, compared with other systems. Our study helps to improve our understanding of how farming systems influence soil biodynamics, while studies on the longer-term effects of organic and conventional farming systems on the build-up or reduction of free living nematodes for improved ecosystem services are needed.
    https://dx.doi.org/10.1016/j.agee.2021.107846
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7358
    IITA Authors ORCID
    Daniel Coynehttps://orcid.org/0000-0002-2030-6328
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.agee.2021.107846
    Research Themes
    Natural Resource Management
    IITA Subjects
    Agronomy; Biodiversity; Disease Control; Farm Management; Farming Systems; Food Security; Livelihoods; Maize; Pests of Plants; Plant Breeding; Plant Diseases; Plant Health; Research Method; Smallholder Farmers; Soil Fertility; Soil Health
    Agrovoc Terms
    Nematodes; Soil Health; Soil Fertility; Research; Maize; Farming Systems; Fertilizers; Pesticides; Farmers; Biodiversity
    Regions
    Africa; East Africa
    Countries
    Kenya
    Hubs
    Eastern Africa Hub
    Journals
    Agriculture, Ecosystems and Environment
    Collections
    • Journal and Journal Articles4839
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