Growth Performances of Container Seedlings of Deciduous Hardwood Plantation Species Grown at Different Container Types
2012
Cho, M.S., Forest Practice Research Center, Korea Forest Research Institute, Pocheon, Republic of Korea | Lee, S.W., Korea Forestry Promotion Institute, Seoul, Republic of Korea | Hwang, J.H., Forest Practice Research Center, Korea Forest Research Institute, Pocheon, Republic of Korea | Kim, S.K., Forest Practice Research Center, Korea Forest Research Institute, Pocheon, Republic of Korea
The purpose of this study was to evaluate the effects of container types on seedling growth of Betula costata, Liriodendron tulipifera, Fraxinus rhynchophylla, Fraxinus mandshurica, Zelkova serrata, and Ulmus parvifolia in the container nursery system. We used three container types [20 cavities (150 seedlings/㎡-400 mL), 24 cavities (200 seedlings/㎡-320 mL), and 35 cavities (260 seedlings/㎡-240 mL)] and measured root collar diameter (RCD), height, biomass, seedling quality index (SQI), and root density. The root collar diameter, height, biomass, SQI, and root density of seedlings were the highest at 20 cavities/tray in all six species because this container type has the largest volume and lowest seedling density. However, F. rhynchophylla growth at both 20 and 24 cavities/tray, Z. serrata growth at both 24 and 35 cavities/tray and B. costata growth at all sizes were not significantly different. As expected, container volume was positively correlated with RCD, height, and biomass of five species except for Z. serrata, but seedling density negatively did. Based on these results, 20 cavities/tray are optimal for L. tulipifera, F. mandshurica, and U. parvifolia, 20 or 24 cavities/tray for F. rhynchophylla, 24 or 35 cavities/tray for Z. serrata, and 35 cavities/tray for B. costata, respectively. Usage of optimal container will make us get good quality seedlings as well as reduction of production costs in the container nursery.
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