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    Increasing cassava root yield on farmers’ fields in Nigeria through appropriate weed management

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    Journal Article (2.810Mb)
    Date
    2021
    Author
    Ekeleme, F.
    Dixon, A.
    Atser, G.
    Hauser, S.
    Chikoye, D.
    Korie, S.
    Olojede, A.O.
    Agada, M.
    Olorunmaiye, P.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Weed competition is the major biological stress affecting cassava production in smallholder farms in West and Central Africa, where yields are low compared with those in Asia and Latin America. Options for improved weed management are crucial in increasing productivity. Selected pre- and post-emergence herbicides, integrated with appropriate tillage and plant spacing, were tested in 96 sites in four locations in Nigeria, 24 in 2016 and 72 in 2017. Trials were split plots with six pre-emergence herbicides and no post-emergence treatment as main plots. Subplot treatments were four post-emergence herbicides, weeding with a motorized rotary weeder, short- and long-handled hoes, and no post-emergence weed control, i.e., regardless of pre-emergence treatments. Indaziflam-based treatments, irrespective of post-emergence treatment, and flumioxazin + pyroxasulfone applied pre-emergence followed by one weeding with a long-handled hoe provided >80% control of major broadleaf and grass weeds. Compared with herbicide use, farmer control practices (53%) were not efficient in controlling weeds. The highest root yield was produced where (1) s-metolachlor was combined with atrazine, and one weeding with a long-handled hoe or clethodim with lactofen, and (2) indaziflam + isoxaflutole was combined with glyphosate. An increase in root yield from 3.41 to 14.2 t ha-1 and from 3.0 to 11.99 t ha-1 was obtained where herbicides were used compared with farmers’ practice and manual hoe weeding. Our results showed that integrating good agronomic practices with safe and effective use of appropriate herbicides can result in root yield >20 t ha−1. i.e., twice the national average root yield of 8–12 t ha−1, with >50% net profit. The use of appropriate herbicides can reduce the amount of manual labor required and improve livelihoods, specifically for women and children. Smallholder cassava farmers would require continuous training on the safe use and handling of herbicides to improve efficiency and prevent adverse effects on humans and the environment.
    https://dx.doi.org/10.1016/j.cropro.2021.105810
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7256
    IITA Authors ORCID
    Friday Ekelemehttps://orcid.org/0000-0001-6178-2606
    Stefan Hauserhttps://orcid.org/0000-0002-6329-7783
    David Chikoyehttps://orcid.org/0000-0002-6047-9821
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.cropro.2021.105810
    Research Themes
    Natural Resource Management; Plant Production and Health
    IITA Subjects
    Agronomy; Cassava; Plant Breeding; Plant Production; Value Chains; Weeds
    Agrovoc Terms
    Cassava; On-Farm Research; Herbicides; Weeding; Yields; Profit; Nigeria
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Southern Africa Hub; Headquarters and Western Africa Hub
    Journals
    Crop Protection
    Collections
    • Journal and Journal Articles4835
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