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Balance of energy, water and nutrients in the aquaponic cycle
Szotkowski, Matěj ; Procházková, Michaela (referee) ; Máša, Vítězslav (advisor)
Předložená diplomová práce byla zpracována s cílem vytvořit přehled poznatků v oblasti akvaponické potravinové produkce. Informace získané během tvorby tohoto přehledu pak měly vést, v kombinaci s daty získanými z funkčního provozu, k vytvoření matematického modelu akvaponického cyklu. Na akvaponické farmě provozované společností Flenexa plus s.r.o., která byla zdrojem potřebných procesních dat, měla být dále zpracována a vyhodnocena bilance energie a vody. Nakonec měla být v průběhu práce posouzena možnost implementace mikrořasového fotobioreaktoru do akvaponického cyklu. Úvod práce představuje motivaci vedoucí k potřebě inovovat dnešní potravinovou produkci. Kriticky jsou zhodnoceny predikce vývoje lidské populace, a to pak hlavně z pohledu dopadu, který by tento růst měl na zemědělskou produkci. Současná situace se na základě získaných poznatků ukazuje jako neudržitelná, primárně pak v oblastech vodohospodářství a energetické spotřeby. Následně je jako možné řešení vedoucí ke zlepšení udržitelnosti potravinové produkce zkoumána akvaponie. Akvaponie je definována a její jednotlivé komponenty jsou představeny z hlediska mechanismu jejich fungování a z pohledu jejich návrhu. Mezi popsané oblasti patří například principy tzv. coupled a decoupled akvaponie a popis možných typů hydroponického komponentu. V této části práce je pozornost věnována také představení cyklů jednotlivých živin v rámci akvaponie. Následující a poslední teoretická část práce je pak věnována mikrořasovému fotobioreaktoru. Jsou zde popsány mechanismy, jak motivující, tak odrazující od zakomponování bioreaktoru do akvaponie. V oblasti výhod se jedná hlavně o jeho roli ve stabilizaci pH a spotřebě toxikého amoniaku. Na druhou stranu jeho ekonomické dopady na profitabilitu akvaponie jsou velmi proměnlivé v závislosti na způsobu implementace. Samotný mikrořasový fotobioreaktor je pak v práci detailněji představen. Jednotlivé procesní ukazatele ovlivňující růst řas jsou rozebrány, a to společně s jednotlivými typy fotobioreaktoru, metodami sklizně a využitími pro vyprodukované mikrořasy. Na základě poznatků schromážděných v této práci pak lze jako nejvhodnější k implementaci do akvaponie doporučit hybridní fotobioreaktory, u kterých je většina osvětlení zajištěna v podobě slunečního svitu. Samotná experimentální část práce pak začíná popisem zkoumaného provozu společnosti Flenexa plus s.r.o. z pohledu aplikovaného akvaponického procesu. Jednotka podrobená měření byla provozně stabilní a využívala implementace hydroponického komponentu typu Deep Water Culture (DWC). Spolu s detailním popisem celého provozu jsou poskytnuty a vyhodnoceny vypracované bilance vody a energií. Pozornost je pak přesunuta k matematickým modelům vypracovaným a ověřeným na základě dat a poznatků shromážděných z provozu společnosti Felenexa plus s.r.o. Logika a algoritmy, na kterých jsou oba modely postaveny, jsou v této části vysvětleny a diskutovány společně s hlavními funkcemi a schopnostmi obou modelů. První, primárně statistický model je představen jako nástroj pro použití při uvádění akvaponie do provozu. Druhý, fyzikální model pak v uživatelsky přívětivém formátu představuje základ pro model řízení akvaponické farmy s mikrořasovým fotobioreaktorem. V neposlední řadě jsou nastíněny také cesty možného budoucího vývoje pro oba vytvořené modely. Práce je následně završena shrnutím a diskusí nad poznatky a výstupy získanými během celého tvůrčího procesu.
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Design of Hydroponic Flowerpot
Grygerek, Jan ; Buganská, Tamara (referee) ; Sládek, Josef (advisor)
The topic of this bachelor's thesis is the design of an interior hydroponic flowerpot, including its covering and lighting. The main problematic is light smog and finding the smallest possible optimal size of the entire device. Physical laws, passive principles and materials with specific properties are used to find the solution. Particularly, light smog is achived with a dichroic foil. The proposed design of the hydroponic planter is an ideal solution for people living in smaller apartments without the possibility of having their own garden.
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Účinek interakce deficitní výživy a výskytu bakterióz na růst a vývoj rostlin rajčete jedlého (Solanum lycopersicum L.)
Školníková, Marie
The aim of this diploma thesis is determination of the influence of deficient nutrition in combination of Pseudomonas syringae pv. tomato infection on tomato (Solanum lycopersicum L.) growth and development. In hydroponic cultivation experiment, tomato variety Darinka was cultivated in solutions without N, P, K, Ca, Mg and in variant with all nutrition (control variant). The dry matter of root and stem was weighed and root length, density and electrical capacitance were set. The content of nutrition in plants was also assessed. The level of infection was determined in 1st term, the highest level had plants with insufficient of Ca and P. High reduction of root and stem dry matter was found in Ca, N, P and Mg deficient plants. The low root electrical capacitance, length and density was determined in plants with Ca, N a P deficiency within infected group and in Ca and N deficient plants within noninfected group. Bacterial infection caused the reduction of all observing parameters in contrast to the plants from noninfected group. The antagonism and synergism between the elements were also showed.
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Sledování intenzity fotosyntézy u vybrané skleníkové kultury
Skaličková, Zuzana
The literary part of the thesis contains basic information on the tomato (Lycopersicon esculentum Mill.) hydroponic culture and the nutrient solution parameters for hydroponic culture of the tomato. A big part of the thesis is dedicated to the photosynthesis process, its phases and factors affecting the process. It also describes various methods of photosynthesis related parameters. The chapter titled methodics records the observed varieties and the conditions they were cultivated in. The devices used to measure as well as the experiment methodology are described in the thesis. The practical part of the thesis is dedicated to observing physiological characteristics of the tomato such as: the photosynthesis intensity, transpiration levels and the stomatal conductivity of gaps. All characteristics were measured at spot conditions of the plants.
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Hodnocení kvalitativních parametrů okurek v hydroponické produkci
Sekanina, Petr
The diploma thesis focuses on the hydroponic production of cucumbers. The first part of the thesis is theoretical and deals with the hydroponic growing with the focus on cucumbers. In the practical part, in accordance with the aim of the thesis, there can be found the evaluation of the yield and growth parameters of two greenhouse hydroponic cultures of cucumbers in Jižní Morava, Ltd., depending on the production period and repeated usage of the grow slabs. The results show that the production period and the repeatedly used grow slabs have a significant impact on the yield and growth of cucumbers.
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Control unit for aeroponic growing system
Vrabec, Miroslav ; Dulík, Tomáš (referee) ; Klozar, Lukáš (advisor)
This thesis deals with the history of a method of plants cultivation without original substrate. The method is hydroponics and its subsequent development is called aeroponics. This work outlines the design of the whole aeroponic system including a control unit. The control unit has been designed to control the injection of nutrient solution, which is essential to the life of plants.Further, the control unit performs the control of lighting period, temperature, air flow and also regulation of nutrient solution pH. The control unit also keeps records of all data necessary for the monitoring process and for the evaluation of time differencies in the system.
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Substráty pro pěstování interiérových rostlin
Zálešáková, Jana
This bachelor thesis deals with substrates of interior plants. First part is mention of the history, followed by division of natural substrates and substrates anthropic, therefore artificially manmade. Next section describes basic traditional substrates, additives and special substrates for plants with specific demands. Subsequently describes methods of growing interior plants, namely hydroponics and green walls. The bachelor thesis includes example and budget of selected vegetation modifications and evaluation of student knowledge in Faculty of Horticulture, Mendel University Brno, about interior plants. Last part deals with information board installed in the premises of Mendel University in Lednice, which provides useful information and demonstration of the substrates
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Community vermicomposting of biodegradable municipal waste
Klubalová, Kateřina ; Innemanová, Petra (advisor) ; Hnátková, Tereza (referee)
The method of vermicomposting experiences a big boom nowadays. The people living in flats can process bio-waste, which they produce on their own. Therefore, the amount of biodegradable municipal waste contained in the dumped mixed municipal waste slightly reduces. In addition, people can benefit from high-quality products called vermicompost and its leachate called worm tea. In this work I summarize acquired knowledge about the vermicomposting focusing on kitchen waste, about conditions, which this method demands, about composition and the possibility of using the end products. Also, it is discussed which bio-waste is suitable for vermicomposting and what earthworm species can be used. The theoretical side of using worm tea in the hydroponic cultivation of plants is discussed. The toxicity of different concentrations of worm tea on a seeds of Sinapis Alba was tested in the experimental part. The concentration row 2,5; 5,0; 7,5; and 10,0 vol. % of four different samples of worm tea from different bio- waste was used. Distilled water was used as a control solution. The values of inhibition for each concentration of worm tea were calculated. Available literature recommends to dilute worm tea in ratio of 1:9 with water. However, the results showed that this dilution is already inhibitory for some...
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Combined mocrobial treatmens in hydroponic cultivation of tomato and cucumber the effect on yield parameters and antioxidant contens in fruits
Pikorová, Markéta ; Albrechtová, Jana (advisor) ; Látr, Aleš (referee)
Some microorganisms are known to form mutualistic symbiosis with plant roots and by their impact they can improve some plant parameters. These symbiotic microorganisms, which are able to improve some plant parameters, include especially mycorrhizal fungi, plant growth promoting bacteria and some saprotrophic mycoparasitical fungi. Mechanisms of changes of these parameters, as influenced by symbiotic microorganisms, are known only in part and nowadays are being actively researched. Aims of this work were to find out if selected microbial treatments influence selected growth, physiological and yield parameters of plants and contents of selected substances in fruits. Within this work were made three pot greenhouse experiments (experiments 1, 2 and 3) and three pilot greenhouse experiments (experiments 4, 5 and 6), performed on tomato (Solanum lycopersicum) and cucumber (Cucumis sativus) plants. Plants were grown in hydroponics using a carrier of rockwool and they were watered by nutrient solution. As microbial treatments for plants in experiments have been used a mixture of arbuscular mycorrhizal fungi (AM), mixture of plant growth promoting bacteria (PGPB), saprotrophic mycoparasitical fungus Trichoderma harzianum (Th) and various mutual combinations of these treatments. There have been observed...
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Thorium accumulation and study of stress responces of plants on thorium presence
Kufner, Daniel ; Soudek, Petr (advisor) ; Petrová, Šárka (referee)
The ability of the accumulation of thorium and study of the stress responses on his presence was tested on a selected cultivar of tobacco, La Burley 21. Plants were cultivated in Hoagland's hydroponic medium under artificial light. Except to the ability of accumulation and distribution of thorium in the all parts of plant was investigated the effect of selected organic and inorganic additions on accumulation. Among organic substances included citric acid, tartaric and oxalic acid in their presence was observed the increase of thorium in all parts of the plant. Were also tested products from the diamine and polyamines (putrescine, cadaverine, spermine and spermidin). These substances, also known for their antioxidant activity in plants, had an impact on reducing the accumulation of thorium, especially in the root system of plants. The most important factor influencing the accumulation of thorium was the absence of phosphate ions in a hydroponic medium, which caused the rise of the concentration of thorium about several levels in all parts of the plants. The initial decrease of pH after additions of organic acids or addition of high concentrations of thorium and the gradual increase of pH during cultivation had proved significant. It was also compared the uptake of accumulation and distribution of...
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