HIGHWAY USE OF HERBICIDES IN GEORGIA. FINAL REPORT

Several herbicide treatments were evaluated in six areas of emphasis to develop roadside management programs for improvement of the roadside environment and reduction of mechanical mowing. The program emphasis was in the suppression or control of weeping lovegrass, blackberry, Japanese honeysuckle, herbaceous summer weeds, smutgrass, and Florida paspalum. A determination of arsenic residues from MSMA (monosodium methanearsonate) sprayed roadsides was compared with unsprayed roadsides. Analyses of soil samples indicated little or no accumulation of arsenic after several years of the normal spray program. No acceptable treatment was found for control of weeping lovegrass. Results indicate Escort (metsulfuron) may be used for control of blackberry and Japanese honeysuckle. Sequential applications of MSMA were effective for the control of most summer herbaceous weeds. Results indicated Oust (sulfometuron) may be a candidate for control of summer herbaceous weeds, if used at low rates of application. Velpar (hexazinone) was demonstrated as effective for the control of smutgrass. No treatment evaluated was acceptable in the control of Florida paspalum. Studies also determined the effect of herbicide treatments on the roadside turf.

• Corporate Authors:

  University of Georgia, Athens

  College of Business Administration
  Athens, GA  United States  30602

  Georgia Department of Transportation

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

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • French, C M
  • Middlebrooks Jr, P B
• Publication Date: 1990-8

Media Info

• Features: Appendices; Tables;
• Pagination: 48 p.

Subject/Index Terms

• TRT Terms: Chemical inhibitors; Grasses; Herbicides; Plant growth; Roadside; Weed control
• Old TRIS Terms: Growth retardants
• Subject Areas: Design; Environment; Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00602703
• Record Type: Publication
• Report/Paper Numbers: FHWA-GA-90-8702, GDOT RP 8702
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 31 1990 12:00AM