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All Journal Jurnal Sylva Lestari

Indriyanto Indriyanto

Department of Forestry, Faculty of Agriculture, University of Lampung

Author-ID : 5271938

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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Ukuran Benih Dan Skarifikasi Dengan Air Panas Terhadap Perkecambahan Benih Pohon Kuku (Pericopsis Mooniana) Anita Luksi Indria Sandi; Indriyanto Indriyanto; Duryat Duryat
Jurnal Sylva Lestari Vol. 2 No. 3 (2014): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Nedun tree (Pericopsis mooniana) is one of commercial trees. The propagation of nedun tree generatively has an obstacle due to it's dormant character and the variety of seeds weight and the both factors are suspected influence the germanitaion. This research aimed to determine effect of seed weight for nedun seed germination and the best of seeds weight for nedun seed germination; the effect of soaking in hot water at beginning temperature 80oC by different soaking period on germination, and the best effect of soaking in hot water at beginning temperature of 80oC by different soaking period on germination. This research was compiled in a randomized complete block design, with 5 treatments and 3 groups. Seeds were catagorized in to three group of weight which were heavy, medium, and light. The treatments consisted of without scarification (as a control), soaking in hot water at beginning temperature of 80ºC during 12 hours, 24 hours, 36 hours, and 48 hours. Every experiment unit consisted of 100 seed. The observed variables were consisted of germination percentage, mean daily germination, germination value, and the ability to germinate. Data analysis methods were used variance homogenity, variance analysis and least of difference test at 5% significant level. Based on the analysis of variance showed that seeds weight significantly affected the mean daily germination, but had no effect on germination percentage, germination value, and the ability to germinate. Seeds weight had a mean daily germination 15,088 days to germinate. The medium seeds were germinated faster than heavy seeds and light seeds. Seed scarification gave effect on germination percentage and germination value significantly, but not significant on mean daily germination and ability to germinate. Seeds scarification with hot water at beginning temperature 80°C for 48 hours had germination percentage 28,000%, germination percentage was better than the scarification for 36 hours, 24 hours, 12 hours, and control. Keywords: Pericopsis mooniana, scarification, seed size

Pengaruh Zat Alelopati Dari Pohon Akasia, Mangium, Dan Jati Terhadap Pertumbuhan Semai Akasia, Mangium, Dan Jati Novia Ekayanti; Indriyanto Indriyanto; Duryat Duryat
Jurnal Sylva Lestari Vol. 3 No. 1 (2015): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Allelopathy is the compound released by the plants to the environtment where actualy another plants is living in. The purpose of this research were to find out the effect of allelopathy which came from earpod wattle (Acacia auriculiformis), black wattle (Acacia mangium), and teak (Tectona grandis) to the seedlings plants of earpod wattle, black wattle, and teak, and also to find out the effect of allelopathy above mentioned that had the weakest effect. This research was designed based on factorial in a complete random design. Factor I was the seedlings which consist of earpod wattle, black wattle, and teak, while factor II was the allelopathy which consists of non allelopathy was used, the use of allelopathy from the extraction of earpod wattle leaves, the extraction of black wattle leaves, and the extraction of teak leaves. The variable that was observed were seedlings height increasing, seedlings stem diameter increasing, number of leaves increasing, and living percentage of the seedlings. This observation data was tested by Bartlett test to know the homogenity of variance. Then it was analyzed by analysis of variance, then it is continually tested by least significant difference test. All the counting were done at 5% significant level. The result of this research showed that allelopathy which one came from earpod wattle, black wattle, and teak were not different effect for seedlings from allelopathy source in the same species. The giving of black wattle allelopathy had significant different effect in height earpod wattle seedlings. That also the giving of teak allelopathy had significant different effect in height black wattle seedlings. The earpod wattle allelopathy had significant different effect in diameter of stem earpod wattle, black wattle, and teak seedlings. Keywords: allelopathy, extraction of earpod wattle, black wattle, and teak, seedlings growth

Densitas Pohon Dewasa Dan Permudaan Pulai (Alstonia Scholaris) Dan Suren (Toona Sureni) Dalam Blok Koleksi Tumbuhan Di Taman Hutan Raya Wan Abdul Rachman Andi A. J. Siahaan; Indriyanto Indriyanto; Agus Setiawan
Jurnal Sylva Lestari Vol. 3 No. 1 (2015): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

The plant collection block is a part of the Great Forest Park of Wan Abdul Rachman that contains varie of plant species, either pristine plant or not and rare or not rare which are needed to be protected and preserved. The plant collection block condition has been changed to be cultivation land. This condition is feared can interfere the existence of rare plants species such as devil tree (Alstonia scholaris) and cedar (Toona sureni). This research was done at the plant collection block in Great Forest Park of Wan Abdul Rachman on September - October 2013. This research is aimed to determine the density, distribution, condition, and coordinates position of devil tree and cedar. The data was taken by used checkered lines method with 0.1% sampling intensity. The sampling area was about 8,455.4 m2, then divided into 20 plots. The distance between lines was 200 m and plots was 100 m. The result showed that the devil tree density was higher amount of 15 stems/ha than cedar density of 7 stems/ha in a row. The frequency of devil tree was found in observation plots about 0.25 stems/ha that was higher than cedar frequency which only of 0.15 stems/ha. Cedar grown by 5 stems, that amount the criteria of main tree as many as 1 stem in the 20th plot. Devil tree grown by 4 stems, that amount the criteria of main tree as many as 1 stem in the 19th plot. Keywords: plant collection block, parent tree, rare tree

Identifikasi Jenis Liana Dan Tumbuhan Penopangnya Di Blok Perlindungan Taman Hutan Raya Wan Abdul Rachman Tiopan Tua Halomoan Simamora; Indriyanto Indriyanto; Afif Bintoro
Jurnal Sylva Lestari Vol. 3 No. 2 (2015): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Liana is one type of plant that becomes typical characteristic of a tropical rain forest ecosystem and its presence adds to the diversity of plant species in the forest ecosystem. The purposes of the study were to identify the species of liana, species of cantilever plant, and to know the number of liana species associated with the species of cantilever plant in the protection block of Wan Abdul Rachman Great Forest Park, especially in the area of Way Balau Sub watershed. The research was conducted on September to Oktober 2013. The sampling method was used line terraced layer. The size of each sample plot was 20 m x 20 m with sub plots 10 m x 10 m, 5 m x 5 m, 2 m x 2 m. Liana and cantilever plants species were inventoried by 0.2% sampling intensity from 796.50 ha. Observed variables were the species and the number of lianas, spesies of cantilever plant and its number. The result of research were identified 8 species of liana and 35 spesies of cantilever plants. Liana density was 1,599 individual/ha and cantilever plant density was 1,594 individual/ha, and it had a good enough distribution because there was no dominant species. The plant that most liked by liana is dadap (Erythrina lithosperma) and liana that mostly found is rayutan (Paederia tomentosa). Keywords: cantilever plant, liana, Protection Block of Wan Abdul Rachman GreatForest Park

Keragaman Jenis Tumbuhan Obat Di Hutan Pendidikan Universitas Sumatera Utara Kawasan Taman Hutan Raya Tongkoh Kabupaten Karo Sumatera Utara Eva Friska Br Sembiring; Indriyanto Indriyanto; Duryat Duryat
Jurnal Sylva Lestari Vol. 3 No. 2 (2015): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Tongkoh Great Forest Park has an excellent site factor for various types of medicine plants. The research about the medicine plants spesies diversity in Tongkoh Great Forest Park was needed because there was the lack of information about the types of medicine plants in the area. The purpose of the study was to determine the diversity of species and it's abundance, in the area of utilization block area Tongkoh Great Forest Park, Karo District, North Sumatra Province. This research was conducted on August 2014 in the utilization area of Tongkoh Great Forest Park, Karo District, North Sumatra Province by inventory method was employed using the terraced lines method that arranged systematically and started with purposive sampling, based on the presence of medicine plants that had known by local communities in around area. The distance between the pioneer lines were 200 m and the distance between the plots and the path lines were 100 m. The results of the research show that there are 25 species of medicine plants which are divided into 21 families. The most dominant species was pegagan (Centella asiatica) with density about 9,500 individu/hectare and frequency at 0.26 and tree species which have the highest relative density was pine (Pinus merkusii) with frequency was 0.2 and the density was 60 individu/hectare. Keywords: medicinal plants, diversity

Co-Authors Afif Bintoro Agus M. Hariri Agus Setiawan Agus Wahyudi Andi A. J. Siahaan Anita Luksi Indria Sandi Duryat Duryat Eva Friska Br Sembiring Ferdiansyah Putra Gesta Rama Noprian Nawawi Ikro Fajar Surachman Melya Riniarti Moses Hasibuan Novia Ekayanti Rekha Prananda Riyanto Riyanto Supriyanto Supriyanto Tiopan Tua Halomoan Simamora Wenty Irvantia Yosepin K. Simangunsong

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