Evaluating Erosion Control Blankets Made With Waste Wool Along Southeastern Idaho Roads

Details

• Creators:
  Ament, Rob ; Bell, Matthew
• Corporate Creators:
  Montana State University. Western Transportation Institute
• Corporate Contributors:
  Idaho. Transportation Department. Research Program ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Erosion control
  • Evaluation and assessment
  • Prototypes
  • Revegetation
  • Roadside
  • Native plants Erosion control blanket
  • Cut slopes
  • Restoration
  • Wool
• Publication/ Report Number:
  FHWA-ID-21-277
• Resource Type:
  Tech Report
• Geographical Coverage:
  Idaho;United States
• Edition:
  Final Report 08/21/2018 – 12/31/2021
• Corporate Publisher:
  Idaho Transportation Department
• Description:
  This project sought to determine whether erosion control blankets (ECBs) using wool instead of coir (coconut fibers) on two different roadside cut slope restoration projects in southern Idaho increased seeded native species establishment in cheatgrass dominated sites. By the second growing season, results for some wool ECBs showed great promise in supporting native perennial grass establishment and growth. Unfortunately, after three growing seasons, the study results were inconclusive due, in large part, to a drought during the final growing season in 2021. An analysis of the wool in the ECBs describes their ability to provide significant amounts of nitrogen (N) for plant growth for three growing seasons as the wool decomposes. A cost benefit analysis demonstrates that, depending on the amount of wool used in the ECB, it may be less expensive to use wool ECBs than to fertilize and cover with traditional coir ECBs in non-weedy nitrogen poor cut slopes.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/63529/dot_63529_DS1.pdf
• File Type:
  [PDF - 3.39 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0d3c3f45e172ffd40395454d5cf8e845a4c22ade9d751b411b9d5bbee9e40f61240fd77656f54bebc11ae97fcf9686d5d41f5f9a53af9f969ee9130dd11f0a05