Mass propagation method from the cutting of three dipterocarp species |
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| Authors: | Chikaya Sakai Atok Subiakto Hani Sitti Nuroniah Naoto Kamata Koji Nakamura |
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| Institution: | (1) Research Division, Komatsu Ltd., 1200 Manda, 254-8567 Hiratsuka, Japan;(2) Forest and Nature Conservation Research and Development Center, Bogor, Indonesia;(3) Laboratory of Ecology, Faculty of Science, Kanazawa University, Nakuma, 920-1192 Kanazawa, Japan |
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| Abstract: | We developed a vegetative propagation system for mass-producing three dipterocarps species,Shorea selanica Bl.,Shorea leprosula Mig., andShorea platyclados Sloot. This system uses fog evaporative cooling inside a greenhouse to reduce the leaf-to-air vapor pressure deficit (leaf-to-air
VPD) inside the propagator, even under high irradiance conditions. This cooling method has no negative influence on medium
conditions such as overwetting. A plastic tent propagator combined with this cooling method was used for vegetative propagation
experiments. In mass-production experiments, the annual rooting percentages from the cuttings were low in the first 2 years
(1997–1998) due to operational problems of the tent propagator (S. selanica, 48–51%;S. leprosula, 56–59%;S. platyclados: 50–63%). A hard cover propagator improved the rooting percentages in the mass-production experiments in 1999 because it
made operations easier (S. selanica, 70%;S. leprosula, 77%;S. platyclados, 77%). This system, which uses a combination of fog evaporative cooling and a hard plastic propagator, should be useful for
the mass propagation of these dipterocarp planting stocks.
This study was carried out under a joint project of the Ministry of Forestry, Indonesia and Komatsu Ltd. The project was supported
by Research Association for Reforestation of Tropical Forest (RETROF) organized by Japanese Forestry Agency. |
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| Keywords: | cutting propagation Dipterocarpaceae fog evaporative cooling reforestation tropical forest |
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