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Properties of soil and hydroponicaly grown lettuce

Mirjam Mlakar (2014) Properties of soil and hydroponicaly grown lettuce. Diploma thesis.

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    Abstract

    The aim of the thesis was to examine the quality of the lettuce Lactuca sativa L., which was grown with two methods. Hydroponically grown lettuce was compared with lettuce grown in soil. The purpose of this research was to find out with which method the lettuce would look better and with which method the quality of the lettuce`s nutritiousness would be higher. We ascertained that plants grown with hydroponics did look better and were heavier. About quality results showed that the contents of nitrogenous substances was higher in plants grown with hydroponics, than in plants grown in soil. Results also showed that the contents of vitamin C was higher in plants grown in soil, than grown with hydroponics. With all other measured characteristics, which identify the quality of the produce, the deviations were generally negligible. From all the sorts, sort ‘Dalmatinska ledenka’ had the highest susceptibility for conditions, as it showed the highest variations while grown with different methods. From all the sorts it reached the lowest growth, but had the hardest head, and consequently had a high grade for mildew. It had the lightest rosette from all sorts, was most susceptible for nitrogenous substances in the hydroponics system. The sort ‘Ljubljana ledenka’ had the smallest variations between the different methods, was less susceptible for nitrogenous substances, and had the least vitamin C. Sort ‘Lydia’ was the biggest. It had the most vitamin C, the highest ratio of chlorophyll a and b for both methods of growing, the least amount of combined carotene α + β, the least amount of carotene β and the highest amount of carotene α from all the sorts. Sort ‘Vanity’ had the lowest mildew, the rosette was the heaviest, it had most acceptance for the nitrogenous substances in soil, it had the highest amount of chlorophyll b in plants grown in soil. Sort ‘Vanity’ had the highest amount of combined carotene α + β for both methods of growing.

    Item Type: Thesis (Diploma thesis)
    Keywords: hydroponic growth, lettuce, substrat, Ljubljanska ledenka, Dalmatinska ledenka, Lidija, Vanity, biology, primary school
    Number of Pages: 94
    Language of Content: Slovenian
    Mentor / Comentors:
    Mentor / ComentorsIDFunction
    doc. dr. Jasna Dolenc KoceMentor
    doc. dr. Dragan ŽnidarčičComentor
    Link to COBISS: http://www.cobiss.si/scripts/cobiss?command=search&base=50126&select=(ID=10056521)
    Institution: University of Ljubljana
    Department: Faculty of Education, Biotechnical Faculty
    Item ID: 2137
    Date Deposited: 26 May 2014 11:40
    Last Modified: 26 May 2014 11:40
    URI: http://pefprints.pef.uni-lj.si/id/eprint/2137

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