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This article in JEQ

  1. Vol. 38 No. 2, p. 772-781
     
    Received: Feb 22, 2008


    * Corresponding author(s): sebastien.schneider@sckcen.be
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doi:10.2134/jeq2008.0098

Effect of Urban Waste Compost Application on Soil Near-Saturated Hydraulic Conductivity

  1. S. Schneider *a,
  2. Y. Coqueta,
  3. P. Vachiera,
  4. C. Labata,
  5. J. Roger-Estradeb,
  6. P. Benoita,
  7. V. Pota and
  8. S. Houota
  1. a UMR INRA/AgroParisTech Environnement et Grandes Cultures, 78850 Thiverval-Grignon, France
    b UMR INRA/AgroParisTech Agronomie, 78850 Thiverval-Grignon, France

Abstract

Compost application tends to increase soil fertility and is likely to modify soil hydrodynamic properties by acting on soil structural porosity. Two composts, a municipal solid waste compost (MSW) and a co-compost of green wastes and sewage sludge (SGW), have been applied every other year for 6 yr to cultivated plots located on a silt loam soil in the Parisian Basin, France. Four soil zones were defined in the topsoil after plowing: the plowpan located at the base of the plowed layer, compacted (Δ) or noncompacted (Γ) zones located within the plowed layer, and interfurrows created by plowing and containing a large quantity of crop residues together with the recently-applied compost. To assess the effect of compost application on the near-saturated soil hydraulic conductivity, infiltration rates were measured using a tension disc infiltrometer at three water pressure potentials −0.6, −0.2, and −0.05 kPa in the various zones of the soil profile. Compost addition decreased K (sat) in the interfurrows after plowing by almost one order of magnitude with average values of 5.6 × 10−5 m.s−1 in the MSW plot and 4.1 × 10−5 m.s−1 in the SGW plot, against 2.2 × 10−4 m.s−1 in the control plot. This effect had disappeared 6 mo after plowing when the average K (sat) in the control plot had decreased to 1.9 × 10−5 m.s−1 while that in the compost-amended plots remained stable.

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Copyright © 2009. American Society of Agronomy, Crop Science Society of America, Soil Science SocietyAmerican Society of Agronomy, Crop Science Society of America, and Soil Science Society of America