HERBICIDES FOR HIGHWAY USE. FINAL REPORT - PHASE III

Numerous single and combination chemical applications were evaluated in four major areas of emphasis in an effort to provide a year-round chemical spraying program. The major areas were control of winter annual weeds, smutgrass control, control of lovegrass and suppression of fescue seedheads. A determination of arsenic residues from MSMA sprayed roadsides was compared with unsprayed roadsides. Sulfometuron (Oust) or Atrazine (Aatrex, et al.) were determined the most effective treatments for control of winter annual broadleaf weeds. Hexazinone (Velpar) or dalapon (Dowpon M) were demonstrated as effective treatments for control of smutgrass. No satisfactory treatments were found for the selective control of lovegrass on roadside. Trials for suppression of fescue seedheads were conducted in three different years and on two dates of application in the first two years to determine and compare the efficacy of sethoxydim (Poast) and related compounds with sulfometuron (Oust) and glyphosate (Roundup). Analyses of soil samples collected from roadsides sprayed and not sprayed with MSMA indicated little or no evidence of arsenic accumulation after nine years of the roadside spraying program.

• Corporate Authors:

  Georgia Department of Transportation

  One Georgia Center
  600 West Peachtree Street, NW
  Atlanta, GA  United States  30308

  University of Georgia, Athens

  College of Business Administration
  Athens, GA  United States  30602

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Miller, J F
  • Middlebrooks, P B
• Publication Date: 1987-4

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 106 p.

Subject/Index Terms

• TRT Terms: Grasses; Herbicides; Measures of effectiveness; Roadside; Weed control
• Uncontrolled Terms: Effectiveness
• Old TRIS Terms: Arsenates
• Subject Areas: Design; Environment; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00475115
• Record Type: Publication
• Report/Paper Numbers: FHWA-GA-87-8303
• Contract Numbers: 8303
• Files: TRIS, USDOT, STATEDOT
• Created Date: Nov 30 1988 12:00AM