The impact on grass vegetation of materials reducing gravel road dustiness

Abstract

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.

The Influence of Road Maintenance Substances on the Growth of Graminaceous Plants

“…The impact of Safecote on herbaceous vegetation has been episodically studied in Lithuania and foreign countries (Bradulienė, Vasarevičius 2012).…”

Ekologijos aspekto vertinimas miestų bendruosiuose planuose

“…Pasiūlytas ekologijos terminų skirstymas įsitvirtino (Niemelä et al 2009;Pickett et al 2009;Hochuli et al 2009), tačiau didžioji dabartinio ekologijos sampratos suvokimo, sietino su miestų aplinka, dalis priklauso "ekologija miestuose" krypčiai, be to, miesto ekologijos tyrimų vis dar vykdoma sąlyginai nedaug (Hahs et al 2009;McDonnell et al 2009). Analogiška ekologinių tyrimų situacija susiformavusi ir su Lietuvoje: dažniausiai tyrimuose analizuojamas (klasikinis) žmogaus poveikis aplinkai (Laurinavičius et al 2010;Bradulienė and Vasarevičius 2012;Vaiškūnaitė et al 2012;Baziene et al 2013).…”

Research Into the Impact of Bishofit Used for Melting Snow and Ice on Plant Germination and Ground Component / Bišofito, Naudojamo Sniegui Ir Ledui Tirpinti, Poveikio Augalų Daigumui Ir Antžeminės Dalies Augimui Tyrimas

“…Tyrinéta keliii prieziurai naudojamii dmskii toksinis poveikis daugiametéms svidréms, tikriesiems eraicinams, pievinéms migléms (Baltrénas et ai 2006), pasariniams motiejukams, baltiesiems ir purpuriniams dobilams (Braduliené, Vasarevicius 2012).…”