Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1144709
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dc.contributor.authorNOVOTNY, E. H.
dc.contributor.authorBALIEIRO, F. de C.
dc.contributor.authorAUCCAISE, R.
dc.contributor.authorBENITES, V. de M.
dc.contributor.authorCOUTINHO, H. L. da C.
dc.date.accessioned2022-07-14T11:19:22Z-
dc.date.available2022-07-14T11:19:22Z-
dc.date.created2022-07-14
dc.date.issued2022
dc.identifier.citationAgriculture, v. 12, n. 7, 1011, 2022.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1144709-
dc.descriptionSeeking to evaluate the hypothesis that biochar optimises the composting and vermicomposting processes as well as their product quality, we carried out field and greenhouse experiments. Four grass clipping composting treatments (only grass, grass + single superphosphate (SSP), grass + biochar and grass + SSP + biochar) were evaluated. At the end of the maturation period (150 days), the composts were submitted to vermicomposting (Eisenia fetida earthworm) for an additional 90 days. Ordinary fine charcoal was selected due to its low cost (a by-product of charcoal production) and great availability; this is important since the obtained product presents low commercial value. A greater maturity of the organic matter (humification) was observed in the vermicompost treatments compared with the compost-only treatments. The addition of phosphate significantly reduced the pH (from 6.7 to 4.8), doubled the electrical conductivity and inhibited biological activity, resulting in less than 2% of the number of earthworms found in the treatment without phosphate. The addition of soluble phosphate inhibited the humification process, resulting in a less-stable compound with the preservation of labile structures, primarily cellulose. The P species found corroborate these findings because the pyrophosphate conversion from SSP in the absence of biochar may explain the strong acidification and increased electric conductivity. Biochar appears to prevent this conversion, thus mitigating the deleterious effects of SSP and favouring the formation of organic P species from SSP (78.5% of P in organic form with biochar compared to only 12.8% in the treatments without biochar). In short, biochar decreases pyrophosphate formation from SSP, avoiding acidification and salinity; therefore, biochar improves the whole composting and vermicomposting process and product quality. Vermicompost with SSP and biochar should be tested as a soil conditioner on account of its greater proportion of stabilized C and organic P.
dc.language.isoeng
dc.rightsopenAccess
dc.subject13C nuclear magnetic resonance
dc.subject31P nuclear magnetic resonance
dc.subjectPyrogenic carbon
dc.subjectVermicompostagem
dc.titleSpectroscopic investigation on the effects of biochar and soluble phosphorus on grass clipping vermicomposting.
dc.typeArtigo de periódico
dc.subject.thesagroCompostagem
dc.subject.nalthesaurusCharcoal
dc.subject.nalthesaurusEisenia fetida
dc.subject.nalthesaurusBiochar
riaa.ainfo.id1144709
riaa.ainfo.lastupdate2022-07-14
dc.identifier.doihttps://doi.org/10.3390/agriculture12071011
dc.contributor.institutionETELVINO HENRIQUE NOVOTNY, CNPS
dc.contributor.institutionFABIANO DE CARVALHO BALIEIRO, CNPSeng
dc.contributor.institutionRUBEN AUCCAISE, UEPGeng
dc.contributor.institutionVINICIUS DE MELO BENITES, CNPSeng
dc.contributor.institutionHEITOR LUIZ DA COSTA COUTINHO, CNPS.eng
Appears in Collections:Artigo em periódico indexado (CNPS)

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