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    Physico-chemical soil attributes under conservation agriculture and integrated soil fertility management

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    Journal Article (1.007Mb)
    Date
    2021
    Author
    Mutuku, E.A.
    Vanlauwe, B.
    Roobroeck, D.
    Boeckx, P.
    Cornelis, W.M.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Conservation Agriculture (CA) and Integrated Soil Fertility Management (ISFM) have been promoted in Sub Saharan Africa as a means to improve soil quality. A four season research (March, 2017 to March, 2019) was conducted to evaluate CA-based treatment, no tillage with residue retention (NTR), ISFM-based treatment, conventional tillage with use of manure (CTM), a combination of CA + ISFM, no tillage with residue retention and use of manure (NTRM) and a control, (C) on soil quality attributes. In the two locations (sub-humid and semi-arid) the effect of soil fertility gradients (high and low) were considered. Trials were set out using a one farm one replicate randomized design. In either high or low fertility fields, soil chemical and physical properties were significantly different between the control and NTR, CTM and NTRM with no significant differences between NTR, CTM and NTRM. SOC was higher under NTR and NTRM practices, which consequently had higher hydraulic conductivity, air permeability, mean weight diameter and available phosphorus. For all the treatments and in both locations, the low fertility fields had significantly lower agronomic use efficiency (AUE) compared to the high fertility fields. In both soil types, plant available water capacity and relative water capacity values were below the recommended thresholds indicating low soil water uptake, suboptimal microbial activity and consequently low nutrient uptake which explains the observed low AUE.
    Acknowledgements
    The authors acknowledge Ghent University special fund (BOF) and International Institute of Tropical agriculture (IITA), Nairobi, for providing financial support to conduct the trials. We are grateful to farmers from Kibugu and Machang’a for willingly providing the trial fields.
    http://dx.doi.org/10.1007/s10705-021-10132-x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7779
    IITA Authors ORCID
    bernard vanlauwehttps://orcid.org/0000-0001-6016-6027
    Dries Roobroeckhttps://orcid.org/0000-0003-3176-4444
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.1007/s10705-021-10132-x
    Research Themes
    Natural Resource Management
    IITA Subjects
    Agronomy; Plant Breeding; Plant Production; Soil Fertility; Soil Health
    Agrovoc Terms
    Soil Quality; Soil Fertility; Conservation Agriculture; Soil Chemicophysical Properties; Kenya
    Regions
    Africa; East Africa
    Countries
    Kenya
    Hubs
    Central Africa Hub
    Journals
    Nutrient Cycling in Agroecosystems
    Collections
    • Journal and Journal Articles4835
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