Resumo

MADRID-AISPURO, Rosa Elvira et al. Growth of Quercus durifolia Seemen in substrates with peat, bark, sawdust and controlled-release fertilizer. Rev. mex. de cienc. forestales [online]. 2025, vol.16, n.88, pp.74-97.  Epub 16-Maio-2025. ISSN 2007-1132.  https://doi.org/10.29298/rmcf.v16i88.1526.

Fertilizer dosage in nursery plant production depends on the type of substrate used since during this growth stage, both factors interact positively or negatively on the plant’s morphological and physiological attributes. The objective of the present study was to determine the efficiency of three substrates and two doses of controlled-release fertilizer (CRF) on the nursery growth of Quercus durifolia. The substrate components (S) evaluated were peat moss, composted pine bark, and fresh pine sawdust, in the following proportions: S1 (60-20-20), S2 (50-25-25), and S3 (33-33-33), with two doses of fertilizer (7 and 10 g L-1 of Multicote 8TM 18-6-12 N, P and K). It was determined that the three assessed substrates showed statistically similar results; however, plants fertilized with 10 g L-1 had greater height, diameter, dry biomass, and more allocation of dry biomass in leaves and stem. Therefore, the inclusion of fresh pine sawdust combined with peat and composted pine bark in equal parts, with doses of 10 g L-1 allows the production of Q. durifolia plants with quality morphological characteristics; this also reduces the cost of production. This is crucial to obtain quality plants for reforestation and restoration projects.

Palavras-chave : Biomass allocation; plant quality; growth; oak; nutrition; alternative substrates.

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