SodininkyStĖ ir darŽininkyStĖ 28(2)

SODININKYSTĖ IR DARŽININKYSTĖ. SCIENTIFIC ARTICLES. 2009. 28(2).Growing of vegetable seedlings under high-pressure sodium lamps withadditional blue 447 nm light-emitting diodesA. Brazaitytė, P. Duchovskis, A. Urbonavičiūtė, G. Samuolienė,J. Jankauskienė, A. Kasiulevičiūtė-Bonakėrė, Z. Bliznikas,A. Novičkovas, K. Breivė, A. ŽukauskasSummaryThe objective of our studies was to investigate effect of solid-state short-wavelength sourcesof blue light in combination with high-pressure sodium lamps for growing of vegetable seedlings.Cucumber hybrid ‘Mandy’, tomato hybrid ‘Cunero’ and sweet pepper cultivar ‘Reda’ were usedfor investigation. There was compared growing of vegetable seedlings under high-pressure sodiumlamps „SON-T Agro“ (PHILIPS) and under these lamps supplemented by blue light solidstateilluminators with LHXL-LR3C (Lumileds Lighting, USA) light-emitting diodes (447 nm).It was established that vegetable (cucumber, tomato, sweet pepper) seedlings were lower.Supplemental blue light during growing of vegetable transplant accelerated formation of flowerbuds. Significant after-effect of supplemental blue light on vegetable yield was not established.Key words: blue light, cucumber, light-emitting diodes, supplemental lighting, sweetpepper, tomato.135