EVALUATION OF SOIL STERILANT HERBICIDES FOR ROADSIDES

FORTY-FOUR HERBICIDES WERE USED ALONE AND IN VARIOUS COMBINATIONS AS SOIL STERILANT TREATMENTS ON ROADSIDES. USUALLY THREE RATES OF APPLICATIONS WERE EMPLOYED, THE HIGHEST RATE SURPASSING THE RECOMMENDED LABEL RATE. APPLICATIONS IN JUNE AND AUGUST WERE EQUALLY EFFECTIVE AND WERE SUPERIOR TO OCTOBER TREATMENTS. ALTHOUGH MANY OF THE TREATMENTS, ESPECIALLY MIXTURES OF HERBICIDES, WERE EFFECTIVE SOIL STERILANTS, THEY HAVE VERY LIMITED USE ON ROADSIDES. IN EVERY CASE TREATMENTS GIVING ACCEPTABLE SOIL STERILIZATION MOVED DOWNSLOPE FROM THE POINT OF APPLICATION, AND THE RESULTANT BARE SOIL WAS SUBJECTED TO EROSION. THIS ADVERSE EFFECT COULD NOT BE OVERCOME WITH SPRAY VOLUMES UP TO 400 GAL/A NOR WITH ASPHALT EMULSION AS A CARRIER OR CAP OVER THE TREATED AREA. GREATER MOVEMENT DOWNSLOPE WAS EXPERIENCED WITH GRANULAR FORMS THAN WITH THE SAME MATERIAL APPLIED AS SPRAYS. HIGHER RATES OF THE SAME HERBICIDE MOVED MORE THAN LOWER RATES. /FHWA/

  • Supplemental Notes:
    • Contract No RES ST 2-18-69-142
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  United States  76011

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  United States  78701

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • McCully, W G
    • Bowmer, W J
  • Publication Date: 1971-7

Media Info

  • Pagination: 33 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00204654
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Intrm Rept
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Aug 15 1973 12:00AM