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Journal : Forest Science

PENGARUH WAKTU PENYIMPANAN TERHADAP PERTUMBUHAN CABUTAN ANAKAN ALAM MALAPOGA (Toona ciliata M. Roem) Di PERSEMAIAN Fauzia, Fauzia; Wardah, Wardah; Irmasari, Irmasari
ForestSains Vol 15, No 2 (2018): Juni
Publisher : Universitas Tadulako

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Abstract

Forest is the habitat of a wide range of plant species in which these species have different sizes and ages of seedling at transplanting. In order to increase the species richness through natural regeneration, it is important to carry out research related to this topic. In the present study, the seedlings of Malapoga (Toona ciliata M. Roem) from its natural population are investigated. It primarily aims to determine the effect of storage time of the seedlings of Malapoga (Toona ciliata M. Roem) to obtain optimal seedling growth. It was conducted in June – August 2016, at the nursery of BPDAS PALU-POSO, Universitas Tadulako, Palu, Central Sulawesi. The research uses a completely randomized design (CRD) in which there are four treatments, namely: M0 = Control, M1 = 1-day storage, M2 = 2-days storage, M3 = 3-days storage. Of the four treatments, five replications were conducted hence there were a total to 20 samples. The parameters were height, stem diameter and number of leaves. The honestly significant difference (HSD) test was carried out since the analysis of variance showed a significant difference among the treatments. The results indicate that the 3-days of storage (M3) has a significant positive effect on the seedling growth, with an average plant height of 6.94 cm, stem diameter of 0.3 mm, and eight leaves are visible. It contrasts to the control in which it experiences slow growth.
PENGARUH BERBAGAI INTENSITAS CAHAYA TERHADAP PERTUMBUHAN SEMAI CEMPAKA (Michelia champaca L.) DI PERSEMAIAN Susilawati Susilawati; Wardah Wardah; Irmasari Irmasari
ForestSains Vol 14, No 1 (2016): Desember
Publisher : Universitas Tadulako

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Abstract

Champak (Michelia champaca L.) is a flowering plant in the Magnoliaceae family that requires light as an energy source for photosynthesis. Low light intensity will adversely affected the plant growth. The objective of this study was to determine the effect of various light intensity levels on the growth of champak’s seedlings. It was carried out for three months, February to April 2016, at the Permanent Nursery of BPDAS Palu-Poso, Universitas Tadulako. Randomized Block Design was employed as the method, consisting of five treatments namely: I1 = Light intensity of 10%, I2 = Light intensity of 30%, I3 = Light intensity of 50%, I4 = Light intensity of 70 %, I5 = Light intensity of 90%. Each treatment consisted of two groups, namely Group 1 (seedling with 3-4 leaves) and Group 2 (seedling with 5-6 leaves), which were replicated six times, so there was a total of 60 seedlings as the samples. The parameters were the height, diameter, number of leaves, and leaf area. The results of this study indicated that before the seedlings reached 3-months after weaning, diverse light intensity levels insignificantly affected the observed parameters. Subsequently, it demonstrated the highest level of diameter (1.90 mm), leaf number (3.8 leaves), leaf area (291.01cm2), height (3.83 cm) were obtained by I1, I2, I4, and I5, respectively.