20.500.12556/RUL-183131 Vpliv dodajanja biostimulanta v hranilno raztopino na kakovost pridelka vrtne solate (Lactuca sativa) pri spomladanski pridelavi The effect of adding a biostimulant to the nutrient solution on the quality of lettuce (Lactuca sativa) in spring cultivation V magistrskem delu smo preučevali vpliv segrevanja hranilne raztopine in dodatka biostimulanta Amalgerol® Essence na morfološke in biokemijske lastnosti vrtne solate (Lactuca sativa) pri spomladanski hidroponski pridelavi v NFT (Nutrient Flow Technique) sistemu. Med seboj smo primerjali štiri načine pridelave pri dveh sortah: pridelavo brez segrevanja hranilne raztopine in z njo ter z dodanim biostimulantom in brez njega. V tehnološki zrelosti smo izmerili skupno in tržno maso rastlin, premer in višino rozete ter višino stebla. V laboratoriju smo analizirali delež suhe snovi v listih solate, vsebnost nitrata, fotosinteznih pigmentov, skupnih fenolnih snovi ter pri rdečelistni sorti tudi vsebnost antocianov. Največji pridelek pri zelenolistni sorti je bil dosežen v ogrevani hranilni raztopini brez dodatka biostimulanta (4,43 ± 0,09 kg/m2), pri rdečelistni pa je bil pridelek podoben pri ogrevani hranilni raztopini z dodatkom biostimulanta (3,29 ± 0,04 kg/m2) in brez dodatka (3,30 ± 0,06 kg/m2). V ogrevani raztopini so rastline razvile večje in višje rozete z daljšim steblom, medtem ko je biostimulant vplival na kompaktnejšo rast. Delež suhe snovi in vsebnost nitrata sta bila statistično značilno večja v neogrevani raztopini v primerjavi z ogrevano raztopino, medtem ko dodatek biostimulanta ni imel značilnega vpliva. Temperatura in biostimulant nista imela vpliva na vsebnost fotosinteznih pigmentov, skupnih fenolov in antocianov. Med sortama smo ugotovili statistično značilne razlike v vsebnosti skupnih fenolnih snovi in fotosinteznih pigmentov. In this master’s thesis, the effects of nutrient solution heating and biostimulant Amalgerol® Essence application on the morphological and biochemical characteristics of lettuce (Lactuca sativa) were examined during spring hydroponic production using an NFT (Nutrient Flow Technique) system. Four cultivation methods for two cultivars were compared: with and without heating of the nutrient solution, and with and without a biostimulant. At technological maturity, total and marketable plant weight, rosette diameter and height, and stem height were measured. Laboratory analyses included dry matter content in leaves, nitrate levels, total phenolic content, and photosynthetic pigment content; anthocyanin content was also determined in the red-leaf cultivar. The highest yield in the green-leaf cultivar was achieved with the heated nutrient solution without a biostimulant (4.43 ± 0.09 kg/m²). In the red-leaf cultivar, the yield was similar with the heated nutrient solution both with a biostimulant (3.29 ± 0.043 kg/m²) and without (3.30 ± 0.062 kg/m²). In the heated solution, plants developed larger and taller rosettes with longer stems, while the biostimulant resulted in more compact growth. Dry matter content and nitrate content were significantly higher in the unheated solution, although the addition of the biostimulant had no significant effect. Temperature and biostimulant application did not significantly influence total phenolics, anthocyanins, or photosynthetic pigments. However, there was a significant difference between the cultivars in total phenolics and photosynthetic pigments. solata biostimulant temperatura spomladanska pridelava hidroponska pridelava biokemične in morfološke lastnosti lettuce biostimulant temperature spring cultivation hydroponic cultivation biochemical and morphological characteristics true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-06-05 07:18:14 2026-06-05 07:18:17 2026-06-07 03:24:35 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 279982 280659203 57663.pdf 57663.pdf 1 4B366303F3BBFEC11924C196FBC5AC6A f2c5590aea2f3f3bf40cc1be2bd67febd7d16d4793386129ac6e1e09fd158104 96854ae5-609d-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=234986 Biotehniška fakulteta 0 0 0