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[{"key": "dc.contributor.author", "value": "J\u00e4rvist\u00f6, Johanna", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2014-10-10T05:44:09Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2014-10-10T05:44:09Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2014", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1446910", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/44401", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Kompostia k\u00e4ytet\u00e4\u00e4n maaparannusaineena tai kasvualustan osana. Hajoava kompostiaines ja m\u00e4d\u00e4tysj\u00e4\u00e4nn\u00f6s sis\u00e4lt\u00e4v\u00e4t kuitenkin lyhytketjuisia karboksyylihappoja, jotka ovat kasveille haitallisia. Karboksyylihapot kuitenkin hajoavat kompostimassasta sen stabiloituessa, joten niiden pitoisuudet ovat kompostin kypsymisen indikaattoreita. \n\nTutkimuksen tarkoituksena oli tutkia muurahais-, etikka- ja propionihapon fytotoksisuutta yksist\u00e4\u00e4n ja kahden tai kolmen hapon seoksissa. Testilajit olivat krassi (Lepidium sativum) ja raihein\u00e4 (Lolium multiflorium) ja vasteena it\u00e4vyys, itujen pituus lyhytkestoisessa it\u00e4vyyskokeessa (krassi 48 h ja raihein\u00e4 72 h) sek\u00e4 kasvien it\u00e4vyys (7 vrk ja 21 vrk) ja painoon pitempiaikaisessa kasvatuskokeessa (21 vrk).\n\nAnnos-vaste suhteet ja EC50 arvot mallinnettiin kolmiparametrisen log-logistisen mallia kaytt\u00e4en. Happojen seosvaikutukset arvioitiin additive index-menetelm\u00e4n avulla.\n \nMuurahais-, etikka- ja propionihapolle m\u00e4\u00e4riteltiin EC50-, EC10- ja EC90-arvot krassille ja raihein\u00e4lle useille vasteille. Additive index arvojen perusteella voidaan p\u00e4\u00e4tell\u00e4, ett\u00e4 n\u00e4iden happojen kasvitoksisuus on summautuvaa tai antagonistista. Saatuja EC-arvoja voidaan soveltaa hy\u00f6tyk\u00e4ytett\u00e4vien massojen kasvitoksisuuden arviointiin.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Presence of low-weight carboxylic acids (LWCA) in immature composts and anaerobically digested wastewater sludges is well established. When concentrations are high, phytotoxicity of the materials is exhibited, which hinders application of composts in agriculture or horticulture. Although there have been research concerning toxicity of individual LWCA, the mixture aspect has been poorly studied.\n\nThe research was aimed to study the toxicity of three LWCA, formic, acetic and propionic acids, to garden cress (Lepidium sativum) and Italian ryegrass (Lolium multiflorium). Test procedure consisted of short-term germination assays (48 h for cress and 72 h for ryegrass) and subchronic growth assays (21 d). The responses recorded in the assays were germination and shoot length in short-term assay and germination (7d and 21d) and biomass of the plants. The acids were tested individually as well as binary and trinary mixtures.\n\nDose-response relationships and EC values were modeled using three-parametric log-logistic model. Toxicity of the mixtures was evaluated using additive index method utilizing test concentrations in toxic units. Index vales were used to judge whether the toxicity of studied LWCA is simply additive, less than additive or greater than additive.\n\nIn the study EC10, EC50, and EC90 values were generated for cress and ryegrass that can be used for assessing toxicity of composts or digestates. According to the additive index values the mixture toxicity of the LWCA was either additive or less than additive.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Johanna J\u00e4rvist\u00f6 (jokarist) on 2014-10-10 05:44:08.705507. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija@noreply.fi) on 2014-10-10T05:44:09Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201410102964.pdf: 2095702 bytes, checksum: 40d9e2cb376cdb7b8144db9ca3be86e3 (MD5)\nlicense.html: 4856 bytes, checksum: b0d93a861d76a3408409029886c7209e (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2014-10-10T05:44:09Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201410102964.pdf: 2095702 bytes, checksum: 40d9e2cb376cdb7b8144db9ca3be86e3 (MD5)\nlicense.html: 4856 bytes, checksum: b0d93a861d76a3408409029886c7209e (MD5)\n Previous issue date: 2014", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (52 sivua)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "lyhytketjuiset karboksyylihapot", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kasvitoksisuus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "seostoksisuus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "additive index", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "komposti", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "m\u00e4d\u00e4tysj\u00e4te", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Short-term and subchronic phytotoxicity of low-weight carboxylic acids and their mixtures", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201410102964", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ymp\u00e4rist\u00f6tiede ja -teknologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Environmental science and technology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2014-10-10T05:44:10Z", "language": null, "element": "date", "qualifier": "updated", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", 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