Improving Vegetation and Mowing Management in Highway Corridors: Final Report

Report No: 79-R63

Published in 1979

About the report:

Ky-31 tall fescue was found to be the best adapted cool season perennial grass for use in Virginia. Persistence of fine-leaved, short grasses was poor. Late winter-early spring seeding of perennial legumes was found to be the best season for seeding for renovating cut slopes and medians with degenerating grass sods. Late winter seedings in medians were highly successful where seedbeds were prepared with a field cultivator. Crownvetch growing together with tall fescue was found to persist with different mowing regimes during two successive growing seasons. No enhancement of establishment of legumes was observed from micronutrients at several Coastal Plain sites nor by coating of bacterial inoculant onto legume seeds. Buckwheat was found to be an adequate substitute for millets as a summer annual companion species. German millet plus tall fescue were found to be the best associates for summer establishment of sericea lespedeza. Weeping lovegrass reduced sericea establishment by competing strongly in the summer, but was the best associate for establishment of crownvetch because lovegrass grows poorly when crownvetch grows vigorously. Lehmann lovegrass is not adapted to Virginia. Successful seedings of velvet bentgrass as a perennial companion species were confined to the early favorable seeding season. American beachgrass shows some promise for stabilizing coarse textured, sloughing slopes if soil acidity is not limiting. Limestone gravel filled trenches successfully moderated extreme acid conditions on a cut slope where sulfides had been exposed.

Disclaimer Statement:The contents of this report reflect the views of the author(s), who is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Virginia Department of Transportation, the Commonwealth Transportation Board, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. Any inclusion of manufacturer names, trade names, or trademarks is for identification purposes only and is not to be considered an endorsement.


Other Authors

P. P. Adams,  R. E. Blaser

Last updated: January 26, 2024

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