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    Sweet potato root and biomass production with and without nitrogen fertilization

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    U88BkNwekeProjectNothomNodev.pdf (9.097Mb)
    Date
    1990
    Author
    Hill, W.
    Dodo, H.
    Hahn, S.
    Mulongoy , K.
    Adeyeye, S.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Previous work suggests that some sweet potato (Ipomoea batatas, L.) cultivars can produce high storage root yields on soils without fertilizer N addition. This study was conducted to compare storage root yields, total biomass, N uptake and fibrous root weights of sweet potato cultivars grown on low N level soils with and without N addition. In 1987 and 1988, improved sweet potato cultivars developed at International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria were grown with and without 50 kg N ha−1 in Oxic Paleustalfs with low N and C concentrations. Yields of 21 to 38 Mg ha−1 were produced for four of the five improved cultivars grown in soil without N addition. Total biomass, foliage, fibrous root and storage root weights and N concentration in leaves were not influenced by fertilizer N addition. Up to 158 and 89 kg N ha−1 uptake in total biomass occurred with the +N and −N treatments, respectively. Indigenous soil N levels and fibrous root weights for − N vs. +N treatments could not account for the total N uptake and biomass produced on soils without N addition.
    https://doi.org/10.2134/agronj1990.00021962008200060019x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4971
    Digital Object Identifier (DOI)
    https://doi.org/10.2134/agronj1990.00021962008200060019x
    IITA Subjects
    Handling, Transport, Storage And Protection Of Agricultural Products; Food Security; Genetic Improvement; Plant Production
    Agrovoc Terms
    Storage; Yields; Genotypes
    Regions
    Acp; Africa; North America; West Africa
    Countries
    United States; Nigeria
    Collections
    • Journal and Journal Articles4835
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