Effect of soil moisture regimes on growth of teak (Tectona grandis) seedlings
2000
Visetsak Thongpradit | Verapong Suangtho(Royal Forest Dept., Bangkok (Thailand). Forest Research Office. Silviculture Research Div.)
Study on the effect of soil moisture regimes on growth of teak seedlings was carried at the Northern Forest Seed Centre, Lampang Province during October 1998 and September 1999. A series of growth chamber beds were constructed in a plastic shed. Soil moisture was controlled at certain levels through the capillary force. Five levels of soil moisture were included and moisture content was calculated as 22.3, 19.7, 14.5, 12.5 and 9.0 percent based on dry weight and designated as treatments 1-5 respectively. The results showed there were significant differences in sprouting percentage of stumps and also the growth of seedlings from different treatments. The percentages of sprouting were 78, 49, 25, 9 and zero in treatments 1, 2, 3, 4 and 5 respectively. However, with regards to seedling growth, best growth was obtained at soil moisture content of 14.5 percent and was significantly better than any other treatment. Discussions were made in more detail and summarized recommendations were given.
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Эту запись предоставил Kasetsart University