Vpliv temperature hranilne raztopine na pridelek siljenega radiča

Koželj, Jan (avtor), Slatnar, Ana (mentor)

V magistrskem delu smo proučevali vpliv temperature hranilne raztopine na pridelek in kakovost siljenega radiča (Cichorium intybus L.) v hidroponskem sistemu. V poskus smo vključili tri sorte radiča: 'Atlas F1', 'Crenoline F1' in 'Rossa di Treviso 2'. Korene smo pridelali na prostem, jih po spravilu razvrstili glede na velikost in obliko ter jih silili v ogrevani (21,5 °C) in neogrevani (10,6 °C) hranilni raztopini. Spremljali smo maso in premer glavic, število listov, dolžino najdaljšega lista, maso korena ter vsebnost suhe in topne suhe snovi. Rezultati so pokazali, da je bil vpliv temperature hranilne raztopine močno odvisen od sorte. Najizrazitejši odziv na ogrevanje je pokazala sorta 'Crenoline F1', pri kateri so bile v ogrevanem obravnavanju dosežene statistično značilno večje glavice z več listi in večjim premerom. Masa glavic je bila pri tej sorti kar 6,6-krat večja kot pri neogrevanem obravnavanju. Pri sortah 'Atlas F1' in 'Rossa di Treviso 2' vpliv temperature na maso glavic ni bil statistično značilen, čeprav je bil v ogrevani hranilni raztopini opažen večji pridelek. Pomemben dejavnik uspešnosti siljenja so bile tudi morfološke lastnosti korenov. Debeli in razrasli koreni so razvili statistično značilno večje in težje glavice kot drobni koreni, kar potrjuje pomen kakovostnega sadilnega materiala. Na vsebnost suhe snovi in topne suhe snovi je največ vplival genotip; najvišje vrednosti smo ugotovili pri sorti 'Atlas F1'. Rezultati potrjujejo, da sta pridelek in kakovost siljenega radiča posledica medsebojnega delovanja sorte, temperature hranilne raztopine in morfoloških lastnosti korena. Za doseganje največjega pridelka je zato treba tehnologijo siljenja prilagoditi posamezni sorti ter uporabiti kakovostne korene.

• Jezik: Slovenski jezik
• Ključne besede: radič, siljenje radiča, hidroponsko gojenje, temperatura hranilne raztopine, pridelek, količina pridelka
• Vrsta gradiva: Magistrsko delo/naloga
• Tipologija: 2.09 - Magistrsko delo
• Organizacija: BF - Biotehniška fakulteta
• Leto izida: 2026
• PID: 20.500.12556/RUL-186659
• COBISS.SI-ID: 290157571
• Datum objave v RUL: 04.09.2026

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: The effect of nutrient solution temperature on the yield of forced radish

Izvleček

This Master's thesis investigated the influence of nutrient solution temperature on the quantity and quality of forced chicory (Cichorium intybus L.) yield in a hydroponic system. The experiment was designed as a multifactor study involving three chicory cultivars: 'Atlas F1', 'Crenoline F1', and 'Rossa di Treviso 2'. The roots were grown under field conditions and, after harvest, were classified according to their size and shape. They were then forced in either a heated nutrient solution (21.5 °C) or a non-heated nutrient solution (10.6 °C). During the forcing period, the following parameters were measured: head weight, number of leaves, head diameter, length of the longest leaf, dry matter content, soluble dry matter content, and root weight. The collected data were analysed using multifactor analysis of variance. The results showed that the effect of nutrient solution temperature was highly dependent on the chicory cultivar. 'Crenoline F1' exhibited the strongest response to the higher nutrient solution temperature, producing significantly heavier heads with larger diameters, as well as a greater number of longer leaves. In this cultivar, head weight was approximately 6.6 times higher under heated conditions than under non-heated conditions. In contrast, nutrient solution temperature did not have a statistically significant effect on the yield of 'Atlas F1' or 'Rossa di Treviso 2', although towards higher yields in the heated treatment was observed. Root morphology also had a significant influence on crop performance, with larger, well-developed roots producing larger and heavier heads than smaller roots, underscoring the importance of high-quality planting material for successful forcing. Genotype had the greatest effect on dry matter and soluble dry matter content, with the highest values recorded in 'Atlas F1'. These results confirm that the quantity and quality of forced chicory yield are determined by the interaction between cultivar, nutrient solution temperature, and root morphology. To achieve optimal yields, forcing technology should be adapted to the specific cultivar, while ensuring the use of high-quality roots as planting material.

• Ključne besede: chicory, chicory forcing, hydroponic cultivation, nutrient solution temperature, yield, quantity