Productivity of kayu putih (Melaleuca leucadendron LINN) tree plantation managed in non-timber forest production systems in Java,Indonesia |
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| Authors: | Email author" target="_blank">BudiadiEmail author Yoichi?Kanazawa Hiroaki?T?Ishii M?Sambas?Sabarnurdin Priyono?Suryanto |
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| Institution: | (1) Graduate School of Science and Technology, Kobe University, Kobe 657-8501, Japan;(2) Faculty of Forestry, Gadjah Mada University, Yogyakarta, 55281, INDONESIA |
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| Abstract: | Kayu putih oil, extracted from the kayu putih tree (Melaleuca leucadendron), is an important non-timber forest product (NTFP)
in Indonesia. We compared productivity of kayu putih tree plantations among three different sites in East, Central, and West
Java, Indonesia. Leaf-twig, and branch production per tree differed significantly among the three sites. Tree biomass production
was highest at the site in West Java practicing tumpangsari (a form of shifting cultivation) of kayu putih with rice (Oryza
sativa) on alluvial soils. Tree biomass production was lowest at the site in East Java, practicing tumpangsari of kayu putih
with maize (Zea mays) and cassava (Mani- hot esculenta). At this site, tree biomass production increased with increasing stand
age and low production was compensated by greater biomass yield of companion crops. Intermediate tree biomass production was
observed at the site in Central Java where intercropping is only practiced for the first two years after plantation establishment.
Production of tree biomass and kayu putih oil did not increase with increasing stand density, indicating that at a given site,
high tree stocking did not lead to high production. Stand-level productivity of the plantations increased with increasing
stand age and maximum productivity was attained at 15 to 35 years, after which productivity declined. This suggested unsustainable
stand productivity as plantations increase in age. |
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| Keywords: | Biomass production Kayu putih oil Non-timber forest products Sustainability Tumpangsari |
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