Fizikalno kemijski čimbenici vode pri akvaponskom uzgoju salate (Lactuca sativa L.) i sjevernoafričkog soma (Clarias gariepinus)

master's thesis

• Title (english): Physico-chemical factors of water in aquaponic production of lettuce (Lactuca sativa L.) and North African catfish (Clarias gariepinus)
• Author: Marija Megla
• Mentor: Daniel Matulić (mentor)
• Committee member: Daniel Matulić (predsjednik povjerenstva)
• Committee member: Tea Tomljanović (član povjerenstva)
• Committee member: Sanja Fabek Uher (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Fisheries, Beekeeping, Game Management and Special Zoology); Zagreb
• Defense date and country: 2017-07-12, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy; Fishing

Abstract

Akvaponski sustavi su integrirani multitrofični sustavi koji inkorporiraju proizvodnju biljaka
bez uporabe tla. Primarni cilj akvaponskog sustava je iskoristiti nutrijente iz akvakulturnog
uzgoja u uzgoju biljaka. Cilj istraživanja je bio utvrditi fizikalno-kemijske čimbenike vode
akvaponskog sustava te usporediti s vrijednostima otopine u hidroponskom sustavu.
Akvaponski sustav je obuhvatio deset uzgojnih tankova s jedinkama sjevoernoafričkog soma
(Clarias gariepinus) povezanih s dva bazena u kojima se uzgajala salata (Lactuca sativa L.).
Kontrolnu varijantu u istraživanju predstavljao je plutajući hidropon u kojem se koristila
standardna hranjiva otopina za uzgoj lisnatog povrća. Rezultati istraživanja ukazuju na
nepovoljne i nestabilne koncentracije kisika, nitrita i pH vrijednosti u akvaponskom sustavu
što su ograničavajući faktori u uspješnom održavanju takve vrste sustava. Pojava patogena i
nakupljanje mulja u akvaponskim bazenima ukazali su na lošu sterilizaciju hranjive otopine.
Prema rezultatima istraživanja, hidroponski sustav pokazao se kao uspješniji u uzgoju salate.

Abstract (english)

Aquaponic systems are integrated multitrophic systems that incorporate plant production
without soil. The main goal of an aquaponic system is using the nutrients from the
aquaculture system for plant production. The goal of this research was to determine water
parameters in the aquaponic system and compare them to the values from the hydroponic
system. The aquaponic system was consisted of ten growing tanks with African catfish
(Clarias gariepinus) connected to two pools with lettuce (Lactuca sativa L.). For the control
variant in the experiment, a floating hydroponic system with a standard nutrient solution was
used. Results showed unfavorable and unstable levels of oxygen, nitrites, and pH values
which were the limiting factor in the successful maintenance of the aquaponic system. The
presence of pathogens and sludge accumulation in aquaponic systems were the indicator of
bad sterilization of the nutrient solution. According to the results of the research, the
hydroponic system proved to be a better option for growing lettuce.

• Keywords: Fizikalno-kemijski parametri; akvaponski sustav; sjevernoafrički som; salata; pH; kisik; nitriti
• Keywords (english): Physico-chemical water parameters; aquaponic system; African catfish; lettuce; pH; oxygen; nitrites
• Language: croatian
• URN:NBN: urn:nbn:hr:204:704039
• Study programme: Title: Fisheries and Game Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka ribarstva i lovstva (magistar/ magistra inženjer/inženjerka ribarstva i lovstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-07-25 12:52:43