STABILIZING DISTURBED AREAS DURING HIGHWAY CONSTRUCTION FOR POLLUTION CONTROL

EXPERIMENTS ALONG VIRGINIA HIGHWAYS ON VARIOUS SOIL MATERIALS IN ALL MAJOR GEOGRAPHIC REGIONS OF VIRGINIA WERE ESTABLISHED TO FIND: (A) THE BEST MULCHES AND CHEMICAL BINDING AGENTS FOR EROSION CONTROL AND (B) THE MOST SUITABLE SEEDING MIXTURES AND FERTILIZER COMBINATIONS FOR SEEDINGS IN ALL SEASONS OF THE YEAR. STAIR-STEP GRADING, SHALLOWER SLOPES, ROUGHENED SOIL SURFACES, AND INCORPORATING LIME AND FERTILIZER REDUCED EROSION PER SE OR GAVE EROSION CONTROL BY ESTABLISHING A VEGETATIVE COVER QUICKLY. GOOD GRADING PRACTICES WITH MULTI-STEP APPLICATIONS OF SEED AND FERTILIZER IF NEEDED MAKE TOPSOILING UNNECESSARY. ALTERING SEED MIXTURES WITH THE ADDITION OF CERTAIN ANNUAL AND PERENNIAL SPECIES HAS GIVEN MARKED IMPROVEMENTS FOR ESTABLISHING VEGETATIVE COVERS IN VARIOUS SEASONS OF THE YEAR. WEEPING LOVEGRASS AND GERMAN MILLET HAVE SIGNIFICANTLY IMPROVED THE ESTABLISHMENT OF VEGETATIVE COVER IN SUMMER SEEDINGS, AND CERAL RYE HAS EXTENDED THE SUCCESSFUL SEEDING DATES IN LATE FALL-EARLY WINTER. SUCH SUCCESS WITH "OFF-SEASON" SEEDINGS HAS MADE IT UNNECESSARY TO DISTURB SOILS A SECOND TIME, THUS AVOIDING ADDITIONAL POTENTIAL EROSION. PERENNIAL SPECIES CAN BE SEEDED WITH THE "TEMPORARY" SPECIES OR IN A SECOND-STEP APPLICATION DURING A FAVORABLE SEEDING SEASON. RESULTS WITH CROWNVETCH IN NEW SEEDINGS OR ON OLD SLOPES WITH SPARSE GRASS VEGETATION HAS BEEN VERY SUCCESSFUL, ESPECIALLY IN NORTHERN AND MOUNTAINOUS REGIONS. THE INTERRELATIONSHIPS OF TOPSOILING, FERTILIZER INCORPORATION, SEEDLING ESTABLISHMENT, AND EROSION CONTROL AS RELATED TO POLLUTION CONTROL ON CONSTRUCTION SITES WAS DISCUSSED. AN INTERPRETIVE SUMMARY OF FINDINGS WITH RECOMMENDATIONS FOR IMPLEMENTATION FOR ESTABLISHING VEGETATION OR CONTROLLING EROSION AT ANY SEASON OF THE YEAR FOR HIGHWAY CONSTRUCTION SITES IS GIVEN. /NTIS/

  • Corporate Authors:

    Virginia Polytechnic Institute and State University, Blacksburg

    Department of Agronomy
    Blacksburg, VA  United States  24061
  • Authors:
    • Green, J T
    • Woodruff, J M
    • Blazer, R E
  • Publication Date: 1973-12

Subject/Index Terms

Filing Info

  • Accession Number: 00214563
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Final Rept
  • Files: TRIS, USDOT
  • Created Date: Jun 19 1974 12:00AM