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    Evaluation of microbial inoculants as biofertilizers for the improvement of growth and yield of soybean and maize crops in savanna soils

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    Authors
    Laditi, M.A.
    Nwoke, C.
    Jemo, M.
    Abaidoo, R.
    Ogunjobi, A.
    Date
    2012-01
    Language
    en
    Type
    Journal Article
    Review status
    Peer Review
    Accessibility
    Open Access
    Metadata
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    Citation
    Laditi, M.A., Nwoke, C., Jemo, M., Abaidoo, R. & Ogunjobi, A., (2012). Evaluation of microbial inoculants as biofertilizers for the improvement of growth and yield of soybean and maize crops in savanna soils. African Journal of Agricultural Research, 7(3), 405-413.
    Permanent link to cite or share this item: http://hdl.handle.net/10568/79839
    DOI: https://dx.doi.org/10.5897/AJAR11.904
    Abstract/Description
    Certain rhizobacteria exert considerable influence on plant growth and development, particularly under limiting conditions. The effects of some indigenous soil microbial isolates and commercially produced microbial inoculants, referred to as bio-inoculants, on the growth and dry matter yield (DMY) of maize (Zea mays) and soybean (Glycine max) crops were assessed under greenhouse conditions. In two sets of experiments, one set comprised of free-living nitrogen-fixing microorganisms (Azospirillum spp.), three soils from Ibadan, Mokwa and Shanono located in different agro-ecological zones, and maize as the test crop. The other set consisted of microbial inoculants that can act as biocontrol agents applied to sterilized and non-sterilized soils; soybean was the test crop. The bio-inoculants were applied separately and also in combination. The treatments included a reference termed ‘mineral N’ where macro- and micro-nutrients were supplied at optimal rates, a control where bio-inoculants were not applied, and four replicates. All treatments, excluding the reference, received only macro-nutrients at suboptimal rates. The crops were grown for eight weeks and growth parameters were measured. The shoot DMY of maize was relatively large (42 to 63 g plant-1) and differed significantly among the soils but the bio-inoculants did not improve the shoot DMY significantly (P > 0.05) in any of the soils when compared with the control. However, sole inoculation of Mazospiriflo-2 enhanced nitrogen uptake significantly in maize grown in Shanono soil. For soybean, the shoot DMY was also not improved by the inoculation or the addition of the microbial products compared with the control.
    Notes
    Open Access Journal
    CGIAR Affiliations
    Grain Legumes; Maize
    AGROVOC Keywords
    BIOCONTROL; CEREALS; LEGUMES; PLANT GROWTH; RHIZOBACTERIA; SOIL; MICROORGANISMS
    Subjects
    GRAIN LEGUMES; MAIZE
    Countries
    NIGERIA
    Regions
    AFRICA; WEST AFRICA
    Investors/sponsors
    Bill & Melinda Gates Foundation
    Collections
    • IITA Journal Articles [1992]

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