VEGETATIVE COVER STUDY FOR PROBLEM SOILS

AN EXTREMELY ACID SOIL MATERIAL HAS BEEN EXPOSED AT DEPTHS OF 6 TO 50 FEET BELOW THE NATURAL SURFACE IN ROAD CUTS ALONG INTERSTATE HIGHWAY 20 IN NORTH LOUISIANA. THE PH OF THIS MATERIAL IS 2.6. THE USUAL METHODS AND TREATMENTS USED TO ESTABLISH VEGETATION ON ROAD EMBANKMENTS FAILED ON THIS MATERIAL. VEGETATIVE GROUND COVER HAS BEEN ESTABLISHED ON THIS SOIL MATERIAL WITH FESCUEGRASS, BAHIAGRASS, DALLISGRASS, BERMUDAGRASS AND WEEPING LOVEGRASS BY THE APPLICATION OF LIME. IT IS CONCLUDED, THAT FOR BEST RESULTS, 20 TONS OF CALCITIC LIMESTONE PER ACRE SHOULD BE INCORPORATED IN THIS PROBLEM SOIL MATERIAL. RECOMMENDATIONS IN ADDITION TO TREATING THIS PROBLEM SOIL MATERIAL ARE: (1) APPLY 6 INCHES OF TOP SOIL AND INCORPORATE 2 TONS OF LIME PER ACRE, (2) SEED, FERTILIZE AND MULCH IN NORMAL MANNER, USING LOCALLY ADAPTED SPECIES, AND (3) ALLOW VEGETATION TO GROW WITHOUT MOWING DURING THE FIRST YEAR. FIRST YEAR MOWING SHOULD BE NO CLOSER THAN 6 INCHES OF HEIGHT. /BPR/

  • Supplemental Notes:
    • Hpr, 65-2m, 736-00-71
  • Corporate Authors:

    Louisiana Tech University, Ruston

    Ruston, LA  USA  71272

    Louisiana Department of Highways

    P.O. Box 44245, Capitol Station
    Baton Rouge, LA  USA  70804

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • Grafton, B F
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00204622
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Mar 19 1971 12:00AM