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dc.contributor.authorAvrella, Eduarda Demaript_BR
dc.contributor.authorPaim, Luciana Pintopt_BR
dc.contributor.authorEmer, Aquélis Armiliatopt_BR
dc.contributor.authorVence, Lilia Beatrizpt_BR
dc.contributor.authorFior, Claudimar Sidneipt_BR
dc.date.accessioned2023-03-29T03:25:00Zpt_BR
dc.date.issued2022pt_BR
dc.identifier.issn0103-9016pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/256399pt_BR
dc.description.abstractThe characterization of substrate properties supports the correct choice of components and directs management decisions in container cultivation. There are several systems of analysis, however, the routine procedures to determine the water retention curve (WRC) are time consuming and inaccurate. This study proposed a reproducible, less time- consuming, and easy to perform method for physical characterization of substrates. We used Sphagnum peat, coconut powder, carbonized rice husk, expanded vermiculite, and expanded clay in isolation. The WRC was obtained at tensions 0, 10, 50, and 100 hPa using the method of Büchner funnel, the European standard (CEN-EN13041), and by the centrifugation method of samples. In centrifugation, tensions were simulated by combining the angular velocity, sample height, and radius measured from the sample outermost point to the central point of the centrifuge. Three rotations were applied (230; 520 and 730 rpm), testing the centrifugation time for each tension and then the volumetric water content was compared between the methods. The results showed a positive correlation (p < 0.001) between the centrifugation and standard methods, considering that the centrifugation time required for moisture stabilization varied according to the material analyzed and the tension applied. However, the time required to obtain a report was reduced by half. Sample centrifugation is a promising method, ensuring that the tensile force actually acts on the entire sample to determine the water retention curve of the substrate also reducing the duration of the analyses.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofScientia Agricola. Piracicaba. Vol. 79, n. 5 (2022), e20210078, 10 p.pt_BR
dc.rightsOpen Accessen
dc.subjectSubstrato de culturapt_BR
dc.subjectSphagnum peaten
dc.subjectSubstrate analysisen
dc.subjectCentrifugaçãopt_BR
dc.subjectAnalysis methodsen
dc.subjectTurfapt_BR
dc.subjectExpanded clayen
dc.subjectWater retention curveen
dc.titleMethod for the physical characterization of substrates using centrifugationpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001164251pt_BR
dc.type.originNacionalpt_BR


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