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This article in JEQ

  1. Vol. 36 No. 4, p. 1013-1020
     
    Received: June 30, 2006


    * Corresponding author(s): hansen.209@osu.edu
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doi:10.2134/jeq2006.0256

Runoff Water Quality from Turfgrass Established Using Volume-Based Composted Municipal Biosolids Applications

  1. N. E. Hansen *a,
  2. D. M. Vietorb,
  3. C. L. Munsterc,
  4. R. H. Whiteb and
  5. T. L. Provinb
  1. a The Ohio State Univ. Agricultural Technical Inst., 1328 Dover Rd., Wooster, OH 44691
    b Soil and Crop Sciences Dep., Texas A&M Univ., College Station, TX 77843
    c Biological and Agricultural Engineering Dep., Texas A&M Univ., College Station, TX 77843

Abstract

Municipal programs for turfgrass establishment recommend large volume-based application rates of composted municipal biosolids (CMB). This study compared runoff water quality among combinations of two common turfgrass establishment practices and two CMB sources. Bryan- or Austin-CMB were incorporated into 5 cm of soil at a rate of 12.5 or 25% by volume (v/v) on an 8.5% slope. Tifway bermudagrass [Cynodon dactylon (L.) Pers. × C. transvaalensis Burtt-Davy, var. Tifway] sprigs were planted and established; sod, produced at a separate site using either CMB amendment at the 25% v/v rate, was transplanted to the runoff plots on the same day. A mature stand of bermudagrass was used as a control. Runoff water was collected after each of eight natural rain events during the sampling period. Total runoff water loss (mm) was similar for the CMB-amended sprigged and transplanted sod stands. The concentration of total dissolved P (TDP) in runoff water was greatest from the transplanted sod in the first seven rain events (4.1 to 7.5 mg L−1). The concentration of TDP in runoff water was similar at both the 12.5 and 25% v/v incorporation rates. Regression analysis indicated Mehlich-3-extractable soil test P concentrations in soil amended with CMB were positively correlated to concentration and mass loss of dissolved P in runoff. At similar application rates, dissolved P loss in runoff water was reduced by incorporating CMB into the soil on site rather than transplanting sod produced with CMB.

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