The effect of dehydrated organic fertilizers on the small radish macroelements content and morfologic traits

U današnjoj poljoprivrednoj proizvodnji učestala je upotreba mineralnih gnojiva kako bi se ostvario zadovoljavajući prinos i kvaliteta proizvoda. No zbog ekološkog aspekta i očuvanja kvalitete tla preporuča se korištenje stajskog gnoja ili drugog organskog gnojiva. Na tržištu je sve veća ponuda dehidriranih gnojiva na tržištu, a potrebno je istražiti njihov utjecaj na morfološka svojstva i nutritivnu vrijednost povrća u čijem se uzgoju primjenjuju. Cilj ovog diplomskog bio je utvrditi utjecaj kombinacija mineralnog (NPK, UREA), stajskog gnoja i dehidriranih organskih gnojiva (Italpollina, Siforga, Orgevit) na mineralni sastav i morfološka svojstva rotkvice. Istraživanje je provedeno u proljetnom roku uzgoja 2014. godine u zaštićenom prostoru. Nisu utvrđene statistički opravdane razlike između testiranih gnojidbenih tretmana na količinu svih makroelemenata (dušik, fosfor, kalij, kalcij i magnezij), biomasu te tržnu masu, visinu i promjer hipokotila rotkvice. Najveća biomasa, tržna masa i promjer hipokotila ostvareni su pri gnojidbi stajskim gnojem i mineralnim gnojivima. Najveća količina suhe tvari (5,35 % ST), kalija (4,21 % K/ST) i magnezija (0,26 % Mg/ST) ostvarena je pri gnojidbi dehidriranim organskim gnojivom Siforga u kombinaciji s mineralnim gnojivima.In today's agricultural production is frequent use of mineral fertilizers in order to achieve satisfactory yield and product quality. However, due to ecological aspects and to preserve the quality of the soil is recommended to use stable manure or other organic fertilizers. In recent years, there is an increasing supply of dehydrated organic fertilizers on the market. The offer of dehydrated fertilizers on the market is growing, so it is necessary to research their influence on the morphological traits and nutritional value of vegetables in which production are applied. The aim of this research was to determine the effect of the combination of the mineral fertilizers (NPK, UREA), stable manure and dehydrated organic fertilizers (Italpollina, Siforga, Orgevit) on the macroelements content and morphological traits of radish. The research was conducted in greenhouse during spring growing period in 2014. There were no statistically significant differences between the tested fertilization treatments on the amount of macroelements (nitrogen, phosphorus, potassium, calcium and magnesium), biomass and marketable mass, height and diameter of radish hypocotyl. The largest biomass, marketable mass and diameter of hypocotyl were determined at fertilization with manure and mineral fertilizers. The highest content of dry matter (5.35 % DM), potassium (4.21 % K/ST) and magnesium (0.26% Mg/ST) was achieved by fertilization with dehydrated organic fertilizer Siforga combined with mineral fertilizers