Jolita Bradulienë, Saulius Vasarevičius - The impact on grass vegetation of materials reducing gravel road dustiness (Vol VII, No 4)

Vilnius Gediminas Technical UniversityRiga Technical UniversityTallinn University of TechnologyBaltic Road Association

 

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2015 Impact Factor: 0.519 ©2015 Thomson Reuters, 2015 Journal Citation Report®

ISSN 1822-427X print
ISSN 1822-4288 online
 

 

 
 

"The Baltic Journal of Road and Bridge Engineering"
Vilnius: Technika, 2012, Vol VII, No 4, p. 288-296


Jolita Bradulienë, Saulius Vasarevičius

The impact on grass vegetation of materials reducing gravel road dustiness

DOI: 10.3846/bjrbe.2012.38
 
Materials used to reduce dustiness on gravel roads affect both the gravel road surfacing and the neighbouring vegetation. Materials used to reduce dustiness may access vegetation directly (when sprayed on gravel roads) and indirectly (when leached out by precipitation). The investigation examined a new substance, the aqueous solution Safecote (of different concentrations) and its mixtures with calcium chloride. 10%, 20% and 30% concentrations of Safecote and 36.5% of calcium chloride were used. The mixture ratio was 1:1 by volume. The investigation addressed the impact of the applied solutions on the length and viability of the above-ground part of plants. The timothy grass, white clover and crimson clover species of grass vegetation were selected for the investigation. The choice was determined by the fact that these species frequently grow in pastures by gravel roads. As it was determined during the investigation the viability of the selected plants in non-contaminated soil was 85–89%, in soil contaminated with dust reducing agent was 67–88% using solution Safecote, and 0–1% when applying mixtures of solutions. After 6 weeks of growth the length of aboveground part was 6.41–8.57 cm in uncontaminated soil, 4.22–8.18 cm in soil contaminated with Safecote solution and 0.00–2.07 cm in soil contaminated with the mixture.
 
Keywords: solution Safecote, calcium chloride, timothy-grass, while clover, crimson clover, viability.

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