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.
- Research study title: Avoiding Degradation of Road Shoulder Asphalt Due to Turfgrass Encroachment.
Arlington, TX United States 76011
Austin, TX United States 78763-5051
- Engelke, M C
- Riffell, S K
- Marcum, K B
- Publication Date: 1995-7
- Features: References; Tables;
- Pagination: 27 p.
- TRT Terms: Alternatives analysis; Asphalt pavements; Deterioration; Field tests; Grasses; Performance evaluations; Road shoulders; Roadside; Turf
- Subject Areas: Design; Environment; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;
- 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