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    An index for assessing the quality of plant residues and evaluating their effects on soil and crop in the (sub) humid tropics

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    Date
    1994
    Author
    Tian, G.
    Brussaard, Lijbert
    Kang, B.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    An equation was developed for calculating a plant residue quality index (PRQI) in the (sub-)humid tropics using the C/N ratio and lignin and polyphenol concentration of plant residues. Among 18 plant species tested, there was a large variation in PRQI. The PRQI was correlated with the decomposition rate of plant residues, soil microclimate, soil fauna density and maize crop performance in the field. Soil moisture and termite density increased with decreases in PRQI, whereas decomposition rate constants of plant residues, soil temperature and ant density increased with increase in PRQI. Improvement in crop performance, such as grain yield, by plant residue mulching was lowest in the case of intermediate PRQI. It is concluded that PRQI can be used for selecting plant residues and projecting their agronomic value in the tropics.
    https://doi.org/10.1016/0929-1393(94)00033-4
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4548
    Digital Object Identifier (DOI)
    https://doi.org/10.1016/0929-1393(94)00033-4
    IITA Subjects
    Plant Production; Integrated Soil Fertility Management; Soil Information; Soil Fertility
    Agrovoc Terms
    Crop Performance; Decomposition; Soil Fauna
    Regions
    Africa; Acp; West Africa; Europe
    Countries
    Nigeria; Netherlands
    Collections
    • Journal and Journal Articles4835
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