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Razvoj prototipov organskih gnojil iz živinskih gnojil z dodatkom biooglja ali vermikulita
Tomažin, Lara (Author), Zupan, Marko (Mentor) More about this mentor... This link opens in a new window, Mihelič, Rok (Co-mentor)

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Abstract
Iz gnojevke in kurjega gnoja ter z dodatkom biooglja in vermikulita je mogoče narediti tržno zanimiva gnojila, ki se jih proizvaja s postopkom separacije gnojevke, s čimer se zmanjša prostornina ter poveča koncentracija hranil. S proizvodnjo takšnih gnojil bi lahko zagotovili bolj uravnoteženo bilanco hranil med živinorejskimi farmami, kjer je pogost presežek hranil, kot posledica velike količine pridelane gnojevke, ter kmetijami, kjer hranil primankuje. S postopkom testiranja gnojil v lončnem poskusu je bilo ugotovljeno, da se iz kurjekov in prašičje gnojevke (KP) lahko izdela organsko gnojilo, ki deluje podobno učinkovito kot mineralno NPK gnojilo. Ugotovljeno je bilo, da sta rast in razvoj zelja (Brassica oleracea var. Capitata L.) in jarega ječmena (Hordeum vulgare L.), kot tudi njuni pridelki pri gnojenju s prototipnim gnojilom (KP) skoraj enakovredna kot pri gnojenju z NPK. Ostala prototipna gnojila z dodatkom vermikulita (KPV) in biooglja (KPO) niso bila tako učinkovita, vendar so bili pridelki vseeno večji kot pri negnojeni kontroli ali pri gnojenju s kompostom. Vsebnost elementov (N, P, K, Zn, Ni, Mg) v rastlinskih in talnih vzorcih se med posameznimi obravnavanji ni bistveno razlikovala. Dodatek biooglja v gnojilo iz mešanice kurjekov in čvrstega separata prašičje gnojenke (KPO) je zmanjšalo vsebnost nitratnega dušika v tleh za 15 – 16 % v primerjavi s KP in NPK. Nasprotno je dodatek vermikulita (KPV) celo rahlo povečal vsebnost dostopnega, potencialno izperljivega nitratnega dušika v tleh v primerjavi KP in NPK.

Language:Slovenian
Keywords:organska gnojila, gnojevka, bilanca hranil, izpiranje hranil
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2020
Publisher:[L. Tomažin]
UDC:631.8(043.2)
COBISS.SI-ID:29867267 This link opens in a new window
Views:215
Downloads:45
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Secondary language

Language:English
Title:Development of prototypes of organic fertilisers from manures with addition of biochar or vermiculite
Abstract:
Marketable fertilizers may be formulated from chicken manure and pig slurry with the addition of biochar and vermiculite and be produced by the process of slurry seperation, therby reducing the volume and increasing the concentration of nutrients. The production of such fertilizers could ensure a better nutrient balance on lifestock farms where nutrient surpluses are frequent as a result of large amounts of slurry produced, with farms where nutrients are deficient. By testing fertilizers in a pot experiment, it was found that an organic fertilizer made from chicken manure and solid part of separated pig slurry (KP), works as effectively as a mineral NPK fertilizer. Growth and development of white cabbage (Brassica oleracea var. Capitata L.) and barley ječmena (Hordeum vulgare L.), as well as their yields in fertilization with NPK were equivalent to that in fertilization with prototype fertilizers made of chicken manure and pig slurry (KP). Other prototype fertilizers with the addition of vermiculite (KPV) and biochar (KPO) were not as effective, but the yields were stil higher than in unfertilized or in compost fertilized observations. The content of elements (N, P, K, Zn, Ni, Mg) in plants and soil samples did not differ significantly among individual treatments. The addition of biochar to the mixture of chicken manure and separated solid pig slurry (KPO) reduced the nitrate nitrogen content in the soil by 15 – 16 % compared to KP and NPK. In contrast, the addition of vermiculite (KPV) even slightly increased the content of available, potentially leachable nitrate-N in the soil compared to KP and NPK.

Keywords:organic fertilizers, slurry, nutrient balance, nutrient leaching

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