STUDY ON SEED-BASED PROPAGATION TECHNIQUES OF Quercus platycalyx Hickel & A.Camus

Abstract

Quercus platycalyx Hickel & A.Camus is a large evergreen tree species with good wood quality, suitable for use as raw material in the production of furniture, veneer, plywood, and solid core laminated boards. This study evaluates the effects of seed treatment water temperature, container size, potting substrate composition, and supplementary fertilizer dosage on seed germination and seedling growth during the nursery stage, in order to determine appropriate propagation techniques for plantation development of this species. The results showed that soaking seeds in water at an initial temperature of 60 °C for 24 hours resulted in the highest germination rate. In the nursery stage, seedlings exhibited the best growth when using containers of 12 × 14 cm, a potting substrate consisting of 70% topsoil (A + B layers) mixed with 30% Song Gianh HC15 microbial organic fertilizer, and applying 0.3 kg of NPK (16:16:8) dissolved in 10 liters of water for irrigation over 10 m² of nursery beds. These findings provide an important scientific basis for improving propagation techniques and promoting the plantation development of Quercus platycalyx in practice.