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Distribution of Phosphorus Forms Depends on Compost Source Material

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dc.contributor.authorLanno, Marge
dc.contributor.authorKriipsalu, Mait
dc.contributor.authorShanskiy, Merrit
dc.contributor.authorSilm, Maidu
dc.contributor.authorKisand, Anu
dc.date.accessioned2023-03-31T12:05:35Z
dc.date.available2023-03-31T12:05:35Z
dc.date.issued2021
dc.description.abstractComposting is a sustainable method for recovering nutrients from various organic wastes, including food waste. Every input waste has different nutrient contents, in turn, suggesting that every compost has different fertilizer and/or soil improvement values. The phosphorus (P) concentration and relative distribution of P forms is related to the original organic material. The relative distribution of P forms determines how readily plants can absorb P from the compost-amended soil. The aim of this study was to investigate the content and relative share of P forms in composts made from fish waste, sewage sludge, green waste, and horse manure. Six forms of P (labile; bound to reducible metals; bound to non-reducible metals; bound to easily degradable organic material; and bound to calcium) were determined using sequential extraction method. The results indicated that fish waste compost had relatively high proportion of labile P, suggesting good biological availability. In comparison, sewage sludge compost contained the highest overall P concentration per dry weight unit, while labile P constituted only 6% of summary of P forms. The results indicate that the evaluation of composts as alternative P sources in agriculture should rely on the relative distribution of P forms in the compost in addition to the typically recognized value of the total P.eng
dc.identifier.issn2079-9276
dc.identifier.publicationResources, 2021, 10, 102eng
dc.identifier.urihttp://hdl.handle.net/10492/8024
dc.identifier.urihttps://dx.doi.org/10.3390/resources10100102
dc.publisherMDPI
dc.rightsCreative Commons Attribution 4.0 International (CC BY 4.0) ; openAccesseng
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectorganic fertilizereng
dc.subjectsequential fractionationeng
dc.subjectfish wasteeng
dc.subjectmanureeng
dc.subjectsewage sludgeeng
dc.subjectgreen wasteeng
dc.subjectcircular economyeng
dc.subjectarticleseng
dc.titleDistribution of Phosphorus Forms Depends on Compost Source Materialeng
dc.typeArticleeng

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