EVALUATIONS OF IMAZETHAPYR AND IMAZAPYR FOR EFFECTIVE SUPPRESSION OF ROADSIDE VEGETATION

The objective of these studies was to evaluate rates and mixtures of imazethapyr and imazapyr with isopropylamine (1:1) plus imazethapyr combinations for growth suppression, seedhead control, and turf discoloration of tall fescue (Festuca arundinacea Schreb.) intended for highway roadside turf. Imazethapyr applied alone at rates of 25 to 123 g/ha provided effective suppression of height for 4 to 9 weeks, controlled seedheads, and generally failed to discolor turf to unacceptable levels. More discoloration was evident in turf treated with imazethapyr plus imazapyr combinations in comparison with turf treated with imazethapyr alone. Rates of 94 + 5.0 to 123 +4.4 g/ha imazethapyr plus imazapyr, respectively, provided good growth and seedhead suppression, and although discoloration occurred, turf generally recovered following termination of suppression.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1988/1189/1189-006.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=EVALUATIONS+OF+IMAZETHAPYR+AND+IMAZAPYR+FOR+EFFECTIVE+SUPPRESSION+OF+ROADSIDE+VEGETATION&author=M.+Welterlen&author=R.+Sowers&publication_year=1988
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1189, Maintenance Planning and Managing Roadside Vegetation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Welterlen, Mark S
  • Sowers, Robert S
• Publication Date: 1988

Media Info

• Features: References; Tables;
• Pagination: p. 62-66
• Monograph Title: Maintenance planning and managing roadside vegetation
• Serial:
  • Transportation Research Record
  • Issue Number: 1189
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Color; Control; Grasses; Herbicides; Roadside; Vegetation
• Uncontrolled Terms: Discoloration
• Old TRIS Terms: Growth regulators
• Subject Areas: Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00489658
• Record Type: Publication
• ISBN: 309048036
• Files: TRIS, TRB, ATRI
• Created Date: Nov 30 1989 12:00AM