Production of planting stock from wildings of four Shorea species

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Seedling production from wildlings and early field performance of planted wildlings of four ecologically and commercially important Shorea species were studied in rainforest conditions of South Kalimantan (Indonesian Borneo). We report results from eight trials on Shorea johorensis, S. leprosula, S. faguetiana and S. parvifolia. Five trials were conducted in the nursery and three in the field. Growth medium, container type, wildling size or duration of shading period did not have significant effects on survival or growth of wildlings in the nursery. Keeping the potted wildlings in the greenhouse resulted in significantly higher survival than keeping them under shading net. Duration of greenhouse period had a significant effect on the survival of wildlings, with three weeks being the minimum period resulting in acceptable survival. Early field performance of hardened wildlings was better than that of seedlings raised from seed. Wildlings of 10–40 cm can be grown successfully in the nursery in several growth media and container types. A greenhouse period of 3–5 weeks is necessary for rooting and high survival. Use of wildlings is recommended as a supplementary method for producing dipterocarp planting stock. The techniques tested in the study are simple and appropriate for seedling production in conditions where skilled labor and advanced technology are not available.

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