Potential Use of a Poultry Manure Digestate as a Biofertiliser:Evaluation of Soil Properties and Lactuca sativa Growth

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摘要 Anaerobicdigestionisaprocessthatiswidelyusedforthetreatmentoforganicwastes.Thedigestatecanbeusedasasoilamendmentorcropfertiliser.Theaimsofourworkweretoevaluate1)thephysicochemicalcompositionandpathogencontentinadigestatefrompoultrymanure,accordingtointernationalregulations,and2)theeffectofitssoilapplicationonthemajorchemicalandbiologicalsoilpropertiesandonthegrowthofLactucasativa.Theexperimentconsistedoftwogroupsofpots(withandwithoutcrop).Treatmentsappliedtoeachgroupwereasfollows:lowandhighdosesofdigestateandinorganicfertiliser,andnoapplication(control)(lowdose:70kgnitrogen(N)ha-1and21kgphosphorus(P)ha-1;highdose:210kgNha-1and63kgPha-1).Soilsamplesweretaken7and34d(harvest)aftertreatmentapplications.Heavymetalandpathogencontentsinthedigestatewerebelowtheupperlimitvalues.DespitethehighpHandelectricalconductivityvaluesofthedigestate,bothsoilparameterspresentedacceptablevaluesforcropgrowth.AlthoughtherewerenoinitialincreasesintotalinorganicNandavailablePinsoilwithdigestateapplication,anincreaseinthefreshweightofcropwasobservedwiththehighdoseapplication.Thisisprobablyassociatedwiththeslownutrientreleasefromthedigestateduringthedevelopmentofthecrop.Changesinthemicrobialcommunityweretemporaryandoccurredattheinitialsamplingstageoftheexperiment.
机构地区 不详
出处 《土壤圈:英文版》 2019年1期
出版日期 2019年01月11日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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