Influence of irrigation, fertirigation and various substrates on morphological and physiological characteristics of Primula acaulis L. (HILL)

U vrijeme klimatskih promjena i ekspanzivnog rasta ljudske populacije dostupnost vodnih resursa odgovarajuće kakvoće je jedan od ključnih okolišnih problema. Tehničko tehnološki zahvati mijenjaju se kako poljoprivreda napreduje, a time se povećavaju standardi proizvodnje koji imaju zadaću osigurati održivu proizvodnju te pozitivno utjecati na uređenje prostora i okoliša. Zahtjevi jaglaca prema uzgojnim uvjetima supstratu i vodi odražavaju se na vizualni izgled biljke i njenu tržišnu vrijednost, ali i na cijenu proizvodnje. Pokus je postavljen po split-plot dizajnu, u dvofaktorijelnom pokusu glavni faktor je bio supstrat, a podfaktor (tri razine) je bila količina vode dodane sustavom navodnjavanja. Prema dobivenim rezultatima može se zaključiti da je jaglac (Primula acaulis) kao biljka slabo tolerantan na sušu posebno u ranim fazama unatoč tome što ga se u prirodi može naći na različitim staništima od šumskih do planinskih. Od dva korištena supstrata rezultati su pokazali da je visina i promjer biljke bio veći kod biljaka koje su uzgajane u supstratu koji je mješavina bijelog i crnog treseta s vrijednošću pH od 5,5.In the period of climate change and the fact that human population is constantly growing, water accessibility of the right quality is one of the major environmental challenges. Technical demands are changing as agriculture is evolving, and production standards are becoming more complex. Standards must provide sustainable production and leave positive benefits on the environment and landscape. The requirements of primroses according to the growing conditions of the substrate and water are reflected in the visual appearance of the plant and its market value, but also in the production price. The experiment was set up according to the split-plot design, in the two-factorial experiment where the main factor was the substrate, and the subfactor (three levels) was the amount of water added by the irrigation system. According to obtained results, it can be concluded that primrose (Primula acaulis) as a plant is poorly tolerant of drought, especially in the early stages, despite the fact that it can be found in nature in various habitats from forest to mountain. Between the two used supstrates, the results showed that the height and diameter of the plant were higher in plants grown on a substrate, that is a mixture of white and black peat with a pH of 5.5