AVOIDING DEGRADATION OF ROAD SHOULDER ASPHALT DUE TO TURFGRASS ENCROACHMENT. FINAL REPORT

Bermudagrass is widely used to stabilize road shoulders. However, the invasive rhizomes of bermudagrass often penetrate the asphalt causing severe deterioration. To avoid expensive and time-consuming repairs, herbicides are used to retard the growth of bermudagrass, but frequent applications are expensive and are subject to ever increasing regulations. To identify suitable alternatives to bermudagrass, we planted four turfgrasses adjacent to an asphalt road. We evaluated competitive ability, overall turf performance and changes in asphalt integrity. Both St. Augustinegrass and bermudagrass caused substantial deterioration of the asphalt. Buffalograss caused little or no asphalt deterioration, and was a very strong competitor in the roadside environment. Use of buffalograss instead of bermudagrass would not only save valuable time and resources, but would also avoid controversial input of chemicals into the environment.

  • Supplemental Notes:
    • Research study title: Avoiding Degradation of Road Shoulder Asphalt Due to Turfgrass Encroachment.
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  United States  76011

    Texas Department of Transportation

    Research and Technology Transfer Office, P.O. Box 5051
    Austin, TX  United States  78763-5051
  • Authors:
    • Engelke, M C
    • Riffell, S K
    • Marcum, K B
  • Publication Date: 1995-7

Language

  • English

Media Info

  • Features: References; Tables;
  • Pagination: 27 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00720282
  • Record Type: Publication
  • Report/Paper Numbers: TX-95/1903-2F, Res Rept 1903-2F, TTI: 7-1903
  • Contract Numbers: Study 7-1903
  • Files: TRIS, STATEDOT
  • Created Date: Apr 25 1996 12:00AM