Morfološka svojstva i mineralni sastav salate u plutajućem akvaponu i hidroponu

master's thesis

• Title (english): Morphological characteristics and mineral content of lettuce grown in aquaponic and hydroponic system
• Author: Valentina Deisinger
• Mentor: Sanja Fabek Uher (mentor)
• Committee member: Sanja Fabek Uher (predsjednik povjerenstva)
• Committee member: Nina Toth (član povjerenstva)
• Committee member: Daniel Matulić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Vegetable Crops); Zagreb
• Defense date and country: 2018-05-24, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Akvapon je suvremena tehnika uzgoja koja kombinira dva tipa proizvodnje - akvakulturu i hidroponski uzgoj te objedinjuje uzgoj biljaka i riba. U proljetnom roku 2016. godine provedeno je istraživanje uzgoja lisnate salate (Lactuca sativa L. var. crispa, kultivar 'Kireve') u plutajućem akvaponu u kojem je otopina cirkulirala između bazena s afričkim somom (Clarias gariepinus) i bazena s biljkama salate. Plutajući hidropon predstavljao je kontrolnu jedinicu u kojoj je korištena standardna hraniva otopina za uzgoj lisnatog povrća. Cilj istraživanja bio je usporediti morfološke karakteristike i mineralni sastav lisnate salate uzgajane u plutajućem akvaponu i plutajućem hidroponu. Tijekom uzgoja mjereni su abiotski pokazatelji zraka u zaštićenog prostora i hranjive otopine u bazenima. Prilikom berbe izmjerene su morfološke karakteristike rozeta iz oba sustava te je provedena analiza mineralnog sastava biljnog materijala. Salata uzgojena u plutajućem hidroponu ostvarila je veću masu, promjer i visinu rozete te broj listova i duljinu korijena. U plutajućem hidroponu ostvaren je značajno veći prinos (4,1 kg/m2) u odnosu na akvapon (1,7 kg/m2). Hidroponski uzgojena salata isticala se većom količinom dušika, fosfora, kalija, željeza i bakra, dok je salata iz akvapona sadržavala više kalcija, magnezija, mangana i cinka. Na temelju rezultata ovog istraživanja preporučuje se uzgoj salate u plutajućem hidroponu, ali i daljnje istraživanje potencijala uzgoja u akvaponu optimiziranjem uzgojnih uvjeta.

Abstract (english)

Aquaponics is an innovative growing method which combines two different types of growing techniques – aquaculture (farming of aquatic organisms) and hydroponics (cultivating plants). In the spring of 2016, lettuce (Lactuca sativa L. var. crispa, cultivar 'Kireve') was grown in the floating aquaponic system in which the aquaponic solution recirculated between aquaponic units containing African catfish (Clarias gariepinus) and hydroponic units with lettuce. Floating hydroponics was established as a control unit and was filled with standard hydroponic solution for the leafy vegetables production. The aim of this research was to compare morphological characteristics and mineral content of lettuce grown in both systems. Abiotic factors of the air in the greenhouse and of the nutrient solution in growing units were measured throughout the experiment. During the harvest, morphological characteristics of rosettes from both systems were measured and mineral analysis of the leaves was conducted. Lettuce grown in floating hydroponics had higher values of mass, diameter, height of rosettes, number of leaves and root length in comparison to lettuce from the aquaponics system. Also, the lettuce yield in the floating hydroponic (4.1 kg m-2) was significantly higher compared to floating aquaponics (1.7 kg m-2). Hydroponically grown lettuce had a higher content of nitrogen, phosphorus, potassium, iron and copper while lettuce from aquaponics contained more calcium, magnesium, manganese and zinc. Based on the results of this thesis, floating hydroponics is recommended for lettuce production but further research in terms of optimizing conditions of aquaponics production are needed for achieving better results.

• Keywords: Lactuca sativa L. var. crispa; afrički som; cink; prinos
• Keywords (english): Lactuca sativa L. var. crispa; African catfish; zinc; yield
• Language: croatian
• URN:NBN: urn:nbn:hr:204:831365
• Study programme: Title: Horticulture; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka hortikulture (magistar/ magistra inženjer/inženjerka hortikulture)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2018-06-06 07:36:33