00641427

Component

http://onlinepubs.trb.org...trr/1993/1409/1409-012.pdf

https://scholar.google.co...kins&publication_year=1993

Selective control of Johnsongrass was evaluated in tall fescue roadsides. Initially, two application techniques were evaluated: spot handgun applications and broadcast boom application using 281 L/ha (30 gal/acre). The selective herbicides showing good promise were fenoxaprop, sethoxydim, and primisulfuron. The standard glyphosate gave 100% control of both Johnsongrass and tall fescue (nonselective). Fenoxaprop contains isomers, and a preparation for the more active isomer was evaluated during later experiments (HOE 46360 05H, Hoechst-Roussel Agri-Vet Co.). Fenoxaprop (active isomer), nicosulfuron, and fenoxaprop were effective for Johnsongrass control with acceptable tall fescue quality for roadside cover. Nicosulfuron caused more injury than the fenoxaprop formulations. During 1991, fluazifop was tank mixed with fenoxaprop for excellent Johnsongrass control and caused low tall fescue injury, which resulted in improved turfgrass quality on the roadside. Dallis grass and purpletop were effectively controlled out of tall fescue highway turf with fenoxaprop plus fluazifop and imazethapyr plus imazapyr. Fenoxaprop and imazethapyr alone provided less-than-desirable control of both species.

This paper appears in Transportation Research Record No. 1409, Maintenance Management, Traffic Safety, and Roadsides. 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

01403253

English

p. 92-94

1993

Transportation Research Record

0309055563

References (6) ; Tables (5)

Grasses; Herbicides; Measures of effectiveness; Roadside; Vegetation control; Weed control

Effectiveness

Highways; Maintenance and Preservation; I60: Maintenance

TRIS, TRB

Jan 24 1994 12:00AM

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• CORRECTION AND REPAIR OF ROAD EDGE SCOUR FOR GRASSED SHOULDERS ON PARKWAYS
• CORRELATION OF THE NIGHTTIME VISIBILITY OF PAVEMENT MARKING TAPES WITH PHOTOMETRIC MEASUREMENT
• DURABLE FLUORESCENT MATERIALS FOR THE WORK ZONE
• EFFECT OF NONPERMANENT PAVEMENT MARKINGS ON DRIVER PERFORMANCE
• EVALUATING THE POTENTIAL OF REMOTE SENSING RURAL ROAD AND TRAVEL CONDITIONS
• FRAMEWORK FOR SYSTEMATIC DECISION MAKING IN HIGHWAY MAINTENANCE MANAGEMENT
• OHIO NATIVE WILDFLOWER SEED NURSERY
• PHYSICAL TESTING OF TRAFFIC STRIPE PAINT DURABILITY
• PROJECT COST EVALUATION METHODOLOGY APPROACH TO PRIVATIZATION IN THE WASHINGTON STATE DEPARTMENT OF TRANSPORTATION
• SPEED CHANGE DISTRIBUTION OF VEHICLES IN A HIGHWAY WORK ZONE
• TEMPORAL SPEED REDUCTION EFFECTS OF DRONE RADAR IN WORK ZONES
• TRAFFIC CONTROL GUIDELINES FOR URBAN ARTERIAL WORK ZONES