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    Soybean phosphorus-use efficiency in the moist Savanna of West Africa

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    S06ArtOgokeSoybeanInthomDev.pdf (86.37Kb)
    Date
    2006
    Author
    Ogoke, I.
    Togun, A.
    Dashiell, Kenton E.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    With limited access to P fertilizers, soybean (Glycine max (L.) Merr.) varieties cultivated in the moist savanna zone of West Africa should use P as efficiently as possible. Field trials were conducted on the effect of P application on grain yield per unit P accumulated (physiological efficiency or PPE), amount of P accumulated in plant biomass per unit P applied in fertilizer (recovery efficiency or PRE), and the amount of grain produced per unit of applied P (yield efficiency or PYE) in soybean. There was greater proportional root proliferation at lower P rates, and at sites where soil test P was low. Physiological efficiency was higher under these conditions. Although a greater proportion of total dry weight was accumulated in the roots of the early and medium (27-28%) compared with the late varieties (22-23%), root dry weight and PPE in the latter were higher. At maturity, PPE was significantly reduced from 245 kg kg−1 with no P applied to an average of 173 kg kg−1 (or by about 29%) with P application. Phosphorus yield efficiency was higher at sites (Kasuwan Magani and Gidan Waya) and in the late varieties where response to P was highest. PYE with 60 kg ha−1 P applied rate was almost half the value observed with 30 kg P ha−1.
    http://dx.doi.org/10.1300/J064v28n01_03
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3255
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.1300/J064v28n01_03
    IITA Subjects
    Soybean; Grain Legumes; Nutrition
    Agrovoc Terms
    Soybeans; Phosphorus; Savanna; Recovery; Efficiency
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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