Pretreated <i>Eucalyptus globulu</i>s and <i>Pinus radiata</i> Barks: Potential Substrates to Improve Seed Germination for a Sustainable Horticulture

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dc.contributor.authorEscobar-Avello, Danilo
dc.contributor.authorFerrer, Victor
dc.contributor.authorBravo-Arrepol, Gaston
dc.contributor.authorReyes-Contreras, Pablo
dc.contributor.authorElissetche, Juan P.
dc.contributor.authorSantos, Jorge
dc.contributor.authorFuentealba, Cecilia
dc.contributor.authorCabrera-Barjas, Gustavo
dc.date.accessioned2025-01-20T20:11:29Z
dc.date.available2025-01-20T20:11:29Z
dc.date.issued2023
dc.description.abstractCommercial forest plantations in Chile are dominated by pine (Pinus radiata) and eucalyptus (Eucalyptus globulus). Tree bark is the main by-product of the forestry industry and has low value, but great potential for use as an agricultural substrate. However, the direct use of bark fibers may cause plant phytotoxicity due to the presence of polyphenolic and other compounds. This study aims to evaluate the physicochemical properties of E. globulus and P. radiata bark after water extraction treatments. The phytotoxicity of the resulting extracted bark alone and that mixed with commercial substrates (coconut fiber, moss, peat, and composted pine) at different ratios (25 to 75 wt%) were assessed using the Munoo-Liisa vitality index (MLVI) test. For all treatments, the seed germination and growth of radish (Raphanus sativus) and Chinese cabbage (Brassica rapa) species were evaluated and compared to a commercial growing medium (peat) as a control. The optimal mixture for seed growth was determined to be 75% extracted E. globulus bark fiber and 25% commercial substrates such as peat (P), coconut fiber (C), moss (M), and composted pine (CP), as indicated by the MLVI and germination results. Two phytostimulant products, chitosan and alginate-encapsulated fulvic acid, were added to the best substrate mixture, with the purpose of improving their performance. Encapsulated fulvic acid at 0.1% w/v was effective in promoting plant growth, while chitosan at all of the concentrations studied was effective only for mixture 75E-25CP. The mixture of E. globulus fiber and commercial substrates, containing a high proportion of water-extracted fiber (75%), shows the potential to be used in the growth of horticultural crops and in the plant nursery industry.
dc.fuente.origenWOS
dc.identifier.doi10.3390/f14050991
dc.identifier.eissn1999-4907
dc.identifier.urihttps://doi.org/10.3390/f14050991
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92149
dc.identifier.wosidWOS:000996939100001
dc.issue.numero5
dc.language.isoen
dc.revistaForests
dc.rightsacceso restringido
dc.subjectgrowing media
dc.subjectagroforestry
dc.subjectbiostimulants
dc.subjectsustainable agriculture
dc.subjectwaste management
dc.subjectfibers
dc.subjectcultivation
dc.subjectgermination
dc.subjectroot growth
dc.subject.ods02 Zero Hunger
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa02 Hambre cero
dc.subject.odspa12 Producción y consumo responsable
dc.titlePretreated <i>Eucalyptus globulu</i>s and <i>Pinus radiata</i> Barks: Potential Substrates to Improve Seed Germination for a Sustainable Horticulture
dc.typeartículo
dc.volumen14
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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