Original scientific paper

https://doi.org/10.33128/ag.79.5-6.3

EFFECTS OF FERTILIZATION ON THE GROWTH AND DEVELOPMENT OF IMMORTELLE SEEDLINGS (HELICHRYSUM ITALICUM (ROTH) G. DON)

Banka Maričić ; Sveučilište u Zadru, Odjel za ekologiju, agronomiju i akvakulturu, Zadar, Hrvatska
Mario Skelin ; Agro Mare d.o.o., Jelsa, Hvar, Hrvatska
Ivan Skelin ; Agro Mare d.o.o., Jelsa, Hvar, Hrvatska
Kristijan Franin ; Sveučilište u Zadru, Odjel za ekologiju, agronomiju i akvakulturu, Zadar, Hrvatska
Šime Marcelić ; Sveučilište u Zadru, Odjel za ekologiju, agronomiju i akvakulturu, Zadar, Hrvatska
Filip Samodol ; Sveučilište u Zadru, Odjel za ekologiju, agronomiju i akvakulturu, Zadar, Hrvatska
Tomislav Kos ; Sveučilište u Zadru, Odjel za ekologiju, agronomiju i akvakulturu, Zadar, Hrvatska

Abstract

Cultivation of (Helichrysum italicum (Roth) G. Don) in Croatia is on a rise and, consequently, there is a growing need for a faster and high-quality seedling production. The aim of this paper is to determine how nitrogen, phosphorus and potassium fertilizers affect the plant height, the number of secondary shoots and the dry matter mass, individually and in combination, in three separate concentrations of nutritive solution (electrical conductivity: 1.5 mS/cm, 2.2 mS/cm and 3.0 mS/cm). The experiment was performed with seedlings pricked out in the phase of 4 to 5 leaves. The obtained results show that all treatments positively affected the growth and development up to a certain concentration level as measured against the control batch. The only exception is potassium. Fertilization with nitrogen and phosphorus only in concentrations up to 2.2 mS/cm had a positive effect on the growth and development of immortelle seedlings, whereas concentrations of these fertilizers exceeding 2.2 mS/cm did not enhance the seedlings growth. Potassium fertilization in the controlled environment did not show positive results in comparison to other.

Keywords

electrical conductivity; immortelle; nitrogen; nutritive solution; phosphorus; potassium

Hrčak ID:

202834

URI

https://hrcak.srce.hr/202834

Publication date:

29.6.2018.

Article data in other languages: croatian

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