PROCEDURES AND MATERIALS FOR ROADSIDE DEVELOPMENT IN MONTANA INTERIM REPORT: DRYLAND SODDING WITH NATIVE GRASSES FOR PERMANENT EROSION CONTROL

A NEW ADAPTATION OF GRASS SODDING WAS TESTED BY THE MONTANA AGRICULTURAL EXPERIMENT STATION DURING THE FALL OF 1971 AND THE 1972 GROWING SEASON. TERMED "DRY LAND SODDING", THE TECHNIQUE INVOLVES USE OF NATIVE RHIZOMATOUS GRASSES WHICH ARE SODDED WITHOUT THE ARTIFICIAL APPLICATION OF WATER DURING OR FOLLOWING THE SODDING PROCEDURE. KENTUCKY BLUEGRASS AND INLAND SALTGRASS WERE SODDED IN THE FALL OF 1971 AND THE SPRING OF 1972 IN TWO THICKNESSES, AND WESTERN WHEATGRASS WAS SODDED IN THE SPRING OF 1972 IN A 3 INCH THICKNESS. THE SODDING SITE WAS LOCATED ON INTERSTATE 94 AT THE COLSTRIP INTERCHANGE, WHICH HAS AN ANNUAL PRECIPITATION OF APPROXIMATELY 12 INCHES. DURING A YEAR OF BELOW NORMAL PRECIPITATION, ALL TREATMENTS PROVIDED EXCELLENT EROSION CONTROL DESPITE SEVERAL HEAVY THUNDERSHOWERS. OF THE THREE NATIVE GRASSES SODDED, INLAND SALTGRASS DID NOT PROVIDE ADEQUATE COVER. KENTUCKY BLUEGRASS WAS RATED AS THE BEST PERFORMER BASED ON ROOT PRODUCTION AND GROUND COVER. FALL DRYLAND SODDING RESULTED IN GREATER ROOT PRODUCTION AND GROUND COVER THAN SPRING SODDING BUT EROSION CONTROL EFFECTIVENESS APPEARED EQUAL IN BOTH TREATMENTS. RELATIVELY LOW INSTALLATION COSTS, LOW MAINTENANCE COSTS, EXPECTED PERMANENCE, AND GREATER AESTHETIC VALUES SUGGEST THAT DRYLAND SODDING HAS CONSIDERABLE POTENTIAL FOR PROVIDING NATURAL EROSION CONTROL ON SEVERE DRYLAND SITES. /FHWA/

  • Supplemental Notes:
    • Contract 7918
  • Corporate Authors:

    Montana State University, Bozeman

    Agricultural Experiment Station
    Bozeman, MT  USA  59717
  • Authors:
    • Sindelar, B W
  • Publication Date: 1972-10-20

Media Info

  • Pagination: 22 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00204658
  • Record Type: Publication
  • Source Agency: Montana Department of Transportation
  • Report/Paper Numbers: Interim
  • Files: TRIS, STATEDOT
  • Created Date: Jul 22 1974 12:00AM