• Contact Us
    • Send Feedback
    • Login
    View Item 
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    Whole Repository
    CollectionsIssue DateRegionCountryHubAffiliationAuthorsTitlesSubject
    This Sub-collection
    Issue DateRegionCountryHubAffiliationAuthorsTitlesSubject

    My Account

    Login

    Welcome to the International Institute of Tropical Agriculture Research Repository

    What would you like to view today?

    Cassava root yield losses caused by root shape, rot and peeling and cut-off for processing of four cassava varieties on different soils in DR Congo

    Thumbnail
    View/Open
    Journal Article (710.5Kb)
    Date
    2020
    Author
    Hauser, S.
    Bakelana, T.Z.
    Bungu, D.
    Mwangu, M.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Cassava root yields are commonly reported as fresh or dry mass yet usually as raw roots, comprising the peel and root tips, which are not used in processing. No information could be found on the mass losses caused by unsuitable root sizes and shapes, cut-off and peeling. This study determined such losses and evaluated if they are related to the root shape, variety and soil texture. Trials where conducted in DR Congo on coarse textured sand (CTS) and on sandy clay loam (SCL), using 3 improved and 1 local variety. On CTS, root mass losses due to unsuitable root size were 6-8% (improved varieties) and 18% (local variety). Cut-off losses were 13% (improved varieties) and 14 % (local variety). Peeling losses were 21% for all varieties. On SCL, losses due to unsuitable root sizes were negligible. Cut-off losses were 5% (improved varieties) and 8% (local variety). Peeling losses were 18% (improved varieties) and 20% (local variety). Cassava roots were longer and had a lower diameter on CTS. Cut-off losses were higher on CTS due to larger portions of roots lignified between planting stake and storage root. Peeling losses decreased with increasing mean root diameter. The variation in mean root diameter explained up to 55% of the peeling losses. Secondary storage roots emerging from primary storage roots only occurred on CTS and increased peeling losses. Overall, cassava root yields, calculated from raw uncut and unpeeled roots, overestimate the fresh pulp mass, available for consumption or processing by 36% (improved varieties) and 44% (local variety) on CTS and by 23% (improved varieties) and 38% (local variety) on SCL.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7418
    IITA Authors ORCID
    Stefan Hauserhttps://orcid.org/0000-0002-6329-7783
    Research Themes
    Natural Resource Management
    IITA Subjects
    Agronomy; Cassava; Plant Breeding; Plant Production
    Agrovoc Terms
    Cassava; Yields; Peeling; Democratic Republic of the Congo; Peeling
    Regions
    Africa; Central Africa
    Countries
    Democratic Republic of the Congo
    Hubs
    Eastern Africa Hub
    Journals
    Advances in Nutrition and Food Science
    Collections
    • Journal and Journal Articles4835
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository