Book with abstracts from the COST Action 0905 meeting in ... - UMB

GRAMINACEOUS PLANTS DYNAMICS IN SOIL CONTAMINATED
WITH RUNWAY DEICER
Agne Kazlauskiene, Pranas Baltrenas
Department of Environmental Protection, Vilnius Gediminas Technical University,
Sauletekio al. 11, Lithuania.
agne.kazlauskiene@vgtu.lt, pbalt@vgtu.lt
Keywords: above-ground part, graminaceous plants, phytomass, runway deicer.
Technical granular sodium chloride (NaCl) treated with potassium hexacyanoferrate, a road
maintenance material most-widely applied in wintertime in Lithuania. As an alternative to it,
patented under the name of Clearway F1, was selected for the experiment. Clearway F1 is an
environmentally friendly runway deicer, based on a unique formulation of potassium formiate
and environmentally friendly inhibitors. Three species of graminaceous plants, most
frequently used for roadside planting in Lithuania when building new and reconstructing or
renovating the exiting motor roads, were analysed: perennial ryegrass (Lolium perenne L.),
fescue-grass (Festuca pratensis Huds.), meadow-grass (Poa pratensis L.). The paper presents
experimental findings about the effect the runway deicer materials have on the parameters of
graminaceous vegetation – the height of an above-ground part and a phytomass. The
experiment’s findings show that the perennial ryegrass had the biggest (15.98 mg) and the
meadow grass – the smallest (2.06 mg) phytomass of the analysed graminaceous plants in
contaminated soil. During the experiment it was again the perennial ryegrass that reached the
biggest (12.18 cm), while the meadow grass – the smallest (3.57 cm) height of the aboveground
part. The experimental findings also show that the perennial ryegrass has the highest
resistance to a toxic effect of potassium formiate Clearway F1.