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    The effects of tillage systems on soil physical properties and water conservation in a sandy loam soil in Eastern Kenya

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    Date
    2013
    Author
    Miriti, J M
    Kironchi, G
    Esilaba, A O
    Gachene, C K K
    Heng, L K
    Mwangi, D M
    Type
    Other; en_US
    Language
    en
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    Abstract
    Soil water conservation through tillage is widely accepted as one of the appropriate ways of addressing soil moisture constraints in rainfed agriculture. A field experiment was conducted for 6 seasons (2007 to 2009) to evaluate the effects of 3 tillage practices namely ox-plough (OP), subsoiling-ripping (SR) and tied-ridge (TR) on soil physical and hydro-physical properties of a sandy loam soil. Soil surface roughness, bulk density (BD), total porosity, crust strength, saturated hydraulic conductivity, steady infiltration rates and soil water storage were evaluated. Results showed that, mean inter-row BD (1.51 Mg m-3) and crust strength (3.05 MPa) with SR tillage were 7 and 15% greater (P ≤ 0.05) than with OP, respectively. Inter-row infiltration rates for OP (7.9 cm h-1) were more than two fold greater than for SR (3.6 cm h-1) and TR (3.3 cm h-1). Soil surface roughness with TR was significantly greater than with OP and SR tillage systems. Soil water storage for TR (222 mm) exceeded (P ≤ 0.05) that for OP and SR by 30 mm (16%) and 32 mm (17%), respectively. This study concluded that, ripping soil along planting line that are prone to surface crusting without disturbing the soil between crop rows was not effective as a conservation tillage method.
    URI
    http://hdl.handle.net/11295/81854
    Citation
    Miriti, J. M., Kironchi, G., Esilaba, A. O., Gachene, C. K. K., Heng, L. K., & Mwangi, D. M. (2013). The effects of tillage systems on soil physical properties and water conservation in a sandy loam soil in Eastern Kenya. Journal of Soil Science and Environmental Management, 4(7), 146-154.
    Publisher
    University of Nairobi
    Collections
    • Faculty of Agriculture [226]

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