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dc.contributor.advisorVasilikiotis, Christos-
dc.contributor.authorBakouros, Stylianos-
dc.descriptionIncludes bibliographic references, illustrations, photographs, charts and appendicesen_US
dc.descriptionBSc (Hons) in Sustainable Agriculture and Managementen_US
dc.description.abstractOlive oil production is the main agro-industrial activity in the Mediterranean countries as well as in Greece. The operation of the olive oil mills generates significant quantities of liquid waste and solid residues with a high organic load, the nature of which depends on the applied extraction system. In recent years, vermicomposting has become a popular technique for organic waste management, fulfilling the principles of circular economy. An experiment was conducted in order to determine the effect of Two-Phase Olive Mill Waste (TPOMW) on the reproduction rate, mortality and growth of the earthworms Eisena fetida in a laboratory test. The treatments were TPOMW-0 (Manure 370gr & TPOMW 0gr), TPOMW-33 (Manure 246 gr & TPOMW 124gr), TPOMW- 50 (Manure 185gr & TPOMW 185gr) and TPOMW-75 (Manure 124gr & TPOMW 246gr). There were used 4 vessels per treatment. There were added 10 earthworms/vessels, approximately 4 months old. For the phytotoxicity test, it was tested the germination rate of 10 seeds of Lactuca sativa. Extract of each vessel (1:10 compost extract w/v) was mixed with distilled water to create 3 different solutions of different compost proportions (25%, 50%, 75%). With similar method the pH and Electrical Conductivity (EC) values were also measured, but the extract had 1:2 w/v rate. Approximately every 10 days, the vessels were weighed, so that the moisture lost during these days could be measured, and water equal to the weight lost by each vessel was added. The whole experiment lasted about 70 days, at which time the weight of the earthworms in each container was measured again to calculate the rate of weight increase, and also the cocoons in each vessel were counted. The results of the study were tested for their significance on the JMP statistical analysis program. It resulted, that the TPOMW-0 treatment, was the most effective at promoting earthworm reproduction and weight increase. However, the TPOMW-33 treatment stands out as the overall best treatment among the three TPOMW- containing treatments when considering the favorable results in terms of reproduction, growth, and reduced phytotoxicity. The high nutritional content of TPOMW, which explains the significant increase in earthworm biomass seen in the TPOMW-75 containers, is responsible for the rise in EC. A slight variation in electrical conductivity (EC) between the TPOMW-33 and TPOMW-75 treatments suggested a lesser effect on phytotoxicity. The 25% vermicompost extract solution demonstrated the best results in terms of seed germinationen_US
dc.format.extent40 pages-
dc.publisherPerrotis Collegeen_US
dc.publisherCardiff Metropolitan Universityen_US
dc.rightsAll rights reserveden_US
dc.rightsAttribution-NonCommercial 4.0 International*
dc.subjectOlive oil millsen_US
dc.subjectLactuca sativaen_US
dc.subjectCompost extracten_US
dc.subjectTwo-Phase Olive Mill Waste (TPOMW)en_US
dc.subjectpH valuesen_US
dc.subjectEarthworms (Eisenia fetida)en_US
dc.subjectElectrical conductivity (EC)en_US
dc.subjectReproduction rateen_US
dc.subjectNutritional contenten_US
dc.subjectEarthworms’ Biomassen_US
dc.subjectGermination rateen_US
dc.subjectSeed germinationen_US
dc.subject.lcshDissertations, Academicen_US
dc.subject.lcshOlive oil millsen_US
dc.subject.lcshLactuca sativaen_US
dc.subject.lcshOlive oilen_US
dc.subject.lcshOlive oil industryen_US
dc.subject.lcshEisenia foetidaen_US
dc.subject.lcshOrganic farmingen_US
dc.subject.otherPerrotis College - Dissertations - 2023en_US
dc.subject.otherPrecision agriculture. Perrotis Collegeen_US
dc.titleVermicomposting two-phase olive mill waste: effect on growth and reproduction of earthworm (Eisenia fetida)en_US
local.description.statusNot publisheden_US
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