Mineral content and nutritive value of radichio (Cichorium intybus L. var. foliosum Hegi) between different fertilization treatments

Mineralni sastav povrća općenito predstavlja važan izvor minerala koji su uključeni u razne osnovne metaboličke procese u ljudskom tijelu. Ipak prilikom uzgoja povrća na alkalnim, karbonatnim tlima deficijencije P, Fe, Zn, Mn česta su pojava, zbog formiranja teško topivih spojeva i slabije dostupnosti navedenih minerala biljkama. S toga je cilj našeg istraživanja bio utvrditi utjecaj različitih gnojidbi na mineralni sastav i nutritivnu vrijednost radiča kao visoko vrijedne namirnice. Rezultati su pokazali da je primjena organskog gnojiva (s huminskom i fulvičnom kiselinom i dodatkom makro i mikoelementa) putem tla signifikantno povećala koncentraciju P, K i Mg u lišću radiča. Također, uočljiv je i relativni porast količine Fe pri primjeni navedenog organskog gnojiva putem tla u odnosu na ostale gnojidbene tretmane.Vegetable mineral content represents an important source of minerals that are involved in basic metabolic processes in human body. Nevertheless, growing vegetable on alkaline, calcareous soils may result with P, Zn, Mn and Fe plant deficiency since these elements are firmly bound in precipitates of low solubility and consequently their availability to plants is markedly decreased. Therefore, the aim of our experiment was to determine influence of different fertilization treatments on mineral and nutritional value of radicchio as valuable food. The results showed that soil application of organic fertilizer (with humic and fulvic acid + macro and microelements) significantly increased P, K and Mg radicchio leaf concentration. Furthermore, in comparison to the other treatments, relative increase of iron content within organic fertilizer soil application is noticeable