00218166

Component

http://onlinepubs.trb.org...s/hrr/1967/161/161-011.pdf

THE FACTORS WHICH HAVE A BEARING ON SALT INJURY TO PLANTS ARE CENTERED AROUND THE MAIN DELETERIOUS EFFECTS OF SODIUM CHLORIDE ON PLANTS' DIRECT TOXICITY TO THE PROTOPLASM, AND HIGHER WATER TENSION IN THE PLANT. THESE FACTORS ARE PLACED UNDER NINE HEADINGS AS FOLLOWS' /1/ AMOUNT OF ROCK SALT APPLIED, /2/ AMOUNT OF ROCK SALT REACHING THE VEGETATION, /3/ WATER AVAILABILITY, /4/ EXPECTED TEMPERATURES, /5/ EXPECTED WIND VELOCITY, /6/ SOIL FACTORS, /7/ PLANT DORMANCY , /8/ SALT TOLERANCE OF PLANTS, AND /9/ CUMULATIVE EFFECTS. THIS STUDY HAS SHOWN THAT SUFFICIENT ROCK SALT WAS APPLIED TO PARK ROADS TO CAUSE THE DEATH OF THE KENTUCKY BLUEGRASS TURF ALONG THE ROADSIDES. WITH INCREASING USE OF SODIUM CHLORIDE, THE DECLINE AND DEATH OF THE VEGETATION CAN BE EXPECTED TO CONTINUE. THE QUALITATIVE CHEMICAL METHOD FOR DETERMINING SODIUM CHLORIDE INJURY AS PROPOSED BY THOMAS APPEARS SATISFACTORY FOR DETERMINING ROCK SALT INJURY. MORE ACCURATE RESULTS ARE OBTAINED WHEN TESTS ARE MADE SOON AFTER INJURY OCCURS. REFERENCES' A QUALITATIVE MICROCHEMICAL METHOD FOR DETERMINING SODIUM CHLORIDE INJURY TO PLANTS, L. K. THOMAS JR., U. S. NATIONAL PARK SERVICE SCI. REPT., 4'23-32, 1965.

Paper sponsored by Committee on Roadside Development and presented at the 45th Annual Meeting. 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.

01410113

HS-000 708

pp 116-120

1967

Highway Research Record

Digital/other

Figures (1) ; References (5) ; Tables (3)

Chemical analysis; Grasses; Plants; Properties of materials; Roadside; Sodium chloride; Soils; Temperature; Toxicity; Vegetation; Velocity; Water; Wind

Soil properties

Design; Environment; Geotechnology; Highways; Maintenance and Preservation; Materials

TRIS, TRB

Apr 6 1994 12:00AM

• AESTHETICS OF HIGHWAY DRAINAGE DESIGN
• CALIFORNIAS SCENIC HIGHWAY PROGRAM
• COMPARATIVE ANALYSIS OF FORCE ACCOUNT AND CONTRACT MOWING COSTS
• ENVIRONMENTAL VALUES IN REGIONAL HIGHWAY DESIGN
• HIGHWAYS AND OUTDOOR RECREATION
• OPTIMUM UTILIZATION AND SELECTION OF MOWERS FOR HIGHWAY RIGHTS-OF-WAY
• REGENERATION OF WOODY VEGETATION ALONG ROADSIDES
• REST AREA SANITARY DISPOSAL SYSTEMS
• SCENIC ROADS AND PARKWAYS
• THE EFFECT OF ROCK SALT UPON ROADSIDE SUGAR MAPLES IN CONNECTICUT
• THE GREAT RIVER ROAD - A MODEL FOR AMERICA'S SCENIC ROUTES
• THE HIGHWAY-LANDSCAPE NEXUS
• TURF ESTABLISHMENT ON HIGHWAY RIGHT-OF-WAY SLOPES - A REVIEW