Impact of laser beams treatment on the biomass yield and energy value of multiflora rose

Article history: Received: August 2014 Received in the revised form: September 2014 Accepted: September 2014 The object of the paper was to determine the impact of laser beams treatment of the cuttings of multiflora rose on the yield of fresh and dry mass and the energy value. A one-factor field experiment was carried out in 2009-2013 in Mydlniki near Cracow. The impact of two doses of radiation of cuttings with laser beams on the yield, chemical composition and energy value of multiflora rose was investigated. As a result it was found out that radiation with laser beams did not influence the size of fresh yield of multiflora rose. However, bigger dose of laser radiation caused higher increase of dry mass concentration in the above-ground parts and a higher yield of dry mass. No significant impact of bio-stimulation of laser radiation of cuttings on the combustion heat and calorific value of multiflora rose was reported. A considerable content of sulphur in the multiflora rose biomass was reported.