Garuda - Garba Rujukan Digital

Biophysical Studies In Khilau Watershed Azhary Taufiq; Melya Riniarti; Duryat Duryat; Slamet Budi Yuwono
EnviroScienteae Vol 15, No 1 (2019): EnviroScienteae Volume 15 Nomor 1, April 2019
Publisher : Universitas Lambung Mangkurat

Khilau Watershed (DAS) is one of the sub-watersheds with the status of should be restored. The biophysical conditions of the watershed must be assessed, to determine the suitable actions for land rehabilitation. The purpose of this study was to provide a comparative analysis of baseline data on the biophysical conditions of the Khilau Sub-watershed area based on edaphic and climatic parameters. Data collection method was using cluster sampling in five types of land cover. The data analysis used spatial and laboratory analysis. The results showed that agroforests and annual crops mostly were on moderately steep to steep slopes (15-45%) and all primary forests were in steep slopes (>45%). All the land covers were ultisol. The primary forest has the highest CEC, N-total, P-availability, and C-organic among other land covers. The agroforest has the most acid pH soil among other land covers. The primary forest has the most rapid soil permeability compared to other land covers. The primary forest has the lowest temperature and the highest humidity compared to other land covers

Dynamic of Plantation of Oil Palm Smallholdings in Riau Province Sumatra Indonesia Duryat Duryat; Sylvain Raflegau; Marck Phillip Cannon
Jurnal Sylva Lestari Vol. 1 No. 1 (2013): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Smallholder's plantations represent 44% of oil palm in Indonesia, and they were known to have agronomic performance much lower than Estate ones. So there is large room for increasing the yield with sustainable cropping system. To better understand the heterogeneity of smallholder's plantations, an agricultural diagnosis has been implemented in a specific place, Riau Province of Sumatra. This study led to well characterize the dynamics of plantation in the region and the diversity of rationalities. Among eight existing types of smallholding plots, there were only three types with yield hardly lower than those of the estate plantations. This reinforced the interest to implement diagnosis through the nutritional status of palms using data from foliar diagnosis and soil analysis. Keywords: dynamic of plantation, palm oil, smallholders, Sumatra

Pemanfaatan Limbah Teh, Sekam Padi, Dan Arang Sekam Sebagai Media Tumbuh Bibit Trembesi (Samanea Saman) Sudarsono Efendi Sofyan; Melya Riniarti; Duryat Duryat
Jurnal Sylva Lestari Vol. 2 No. 2 (2014): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Rain Tree (Samanea saman) has ability to absorb the carbon dioxide from the air. Due to it's advantages, there was a need to know the propagation way. Using organic materials such as tea waste, rice husk and husk charcoal as a growing medium diggested could increase the seedling growth. This study aims to: (1) determined the effect of tea waste, rice husk and husk charcoal as a growth media for rain tree seedling (2) determined the best composition of the media among soil mixture with tea waste, soil with mixture rice husk and soil with mixture husk charcoal. The research was conducted from September 2012 to December 2012, in the greenhouse, Faculty ofÂ Agriculture, University of Lampung. The study was designed in completely randomized design (CRD) used 7 treatment with 5 replications, each consisted of 5 sample. Treatment consists of: 100% soil, soil + tea waste (75% + 25%), soil + tea waste (50% + 50%), soil + rice husk (75% + 25%), soil + rice husk (50% + 50%), soil + husk charcoal (75% + 25%), soil + husk charcoal (50% + 50%). Provision of tea waste, rice husk and husk charcoal was gave effect on canopy dry weight, stem dry weight, roor length, seed quality indexÂ and did not give affect on height and diameter of seedling, the appropriate composite media for each type of mixture was a composite soil + tea waste (75% + 25%), soil + rice husk (50% + 50%), of the soil + husk charcoal (75% + 25%). Keywords: organic material, rain tree , tea waste, waste, husk charcoal

Identifikasi Jenis Epifit Dan Tumbuhan Yang Menjadi Penopangnya Di Blok Perlindungan Dalam Kawasan Taman Hutan Raya Wan Abdul Rachman Gesta Rama Noprian Nawawi; Indriyanto Indriyanto; Duryat Duryat
Jurnal Sylva Lestari Vol. 2 No. 3 (2014): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Epiphytic is one among the plants that attaches and grows on other plants for sunlight, water, air, and minerals. The existence of epiphytes is very important for forest ecosystems due its ability to provide a place for the ants and the other organisme. The objective of this study were to identify the species of epiphytes, species of cantilever plant, and to know the number of cantilever plant species associated with the species of epiphytes in Wan Abdul Rahman Great Forest Park. This research was conducted at the protection block, Wan Abdul Rahman Great Forest Park, particularly in the area of Way Balau Sub-watershed. This research was conducted during September to October 2013. Epiphytes and cantilever plants species were inventoried in a sampling intensity of 0,2% taken from 796,50 ha of total area of protection blocks, therefore the large of sample plot is 1,593 ha. The size of each sample plot is 400 m2 or 20 m x 20 m, therefore the total number of sample plots are 40 plots. Observed variables were the species and the number of epiphytes , species of cantilever plant and its number, and the importance alue index for each species. The result of the study showed that plant are 7 species of epiphytes and 16 species of cantilever plant. The highest importance value index (IVI) of epiphytes is paku sepat (59,14%). Â The highest IVI of cantilever plant is pulai (30,91%). The most abundant cantilever plant growed by epiphytes is pulai (Alstonia scholaris), pinangsi (Villebrunea rubescens), enau (Arenga pinnata), and medang gabong (Litsea firma). Result of the study showed that epiphytic mostly found on the cantilever plant that has thicker bark, groove bark, stringy bark, and a tough bark. Keywords: block protection forest park wan abdul rahman, epiphytes , epiphytic plants crutch

Pemanfaatan Limbah Serbuk Gergaji Dan Arang Sekam Padi Sebagai Media Sapih Untuk Cempaka Kuning (Michelia Champaca) Anita Dewi Agustin; Melya Riniarti; Duryat Duryat
Jurnal Sylva Lestari Vol. 2 No. 3 (2014): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

To support the cultivation of yellow cempaka (Michelia champaca) intensively, high quality seedlings was needed. One of the factors that affect the growth and quality of seedling was growth media. The objectives of the research were to (1) determine the effect of saw dust and rice husk as growth media than the top soil for yellow cempaka seedlings; (2) obtained the best composite media between top soil with saw dust and rice husk as media for growth media for yellow cempaka seedlings. The research was conducted in greenhouse, started from January to April 2013. The experiment used Completely Randomized Design (CRD) with 6 treatments and 3 replicates, every experiment unit consisted of 6 yellow cempaka seedlings so the total number amounted to 108 seedlings. The treatment were number of medias (1) top soil; (2) saw dust; (3) rice husk; (4) top soil + saw dust 1:1; (5) top soil + rice husk 1:1; (6) top soil + saw dust + rice husk 1:1:1. Observed variables include high growth, diameter, number of leaves, root length, top root ratio, total dry weight and seedling quality index. The results showed that growth media of rice husk gave a good growth of yellow cempaka same as media top soil. Composite growth media that had a better growth of yellow cempaka seedling was composite growth media top soil + rice husk 1:1. Keywords: organic matter, rice husk, growth media, saw dust, yellow cempaka

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

Respon Perkecambahan Benih Asam Jawa (Tamarindus Indica) Terhadap Berbagai Konsentrasi Larutan Kalium Nitrat (Kno3) Elfri Mentari Situmorang; Melya Riniarti; Duryat Duryat
Jurnal Sylva Lestari Vol. 3 No. 1 (2015): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Tamarind (Tamarindus indica) is a multipurpose tree that can be developed either vegetative or generative propagation. Vegetative propagation of tamarind can produce abundant fruit if the plant organs derived from superior parent trees. However, due to the rare availability of natural tamarind stands now days, then the generative propagation by seed, can be the right choice for its cultivation. Generally, tamarind seeds are dormant, so it requires a pre-treatment to break its dormancy. One way to break it was using potassium nitrate (KNO3). This study aimed to determined the response of soaking treatment to the germination of tamarinds seeds with KNO3 solution at various concentrations and the most effective concentration of KNO3 solution to stimulate tamarind seeds germination. The experiment was conducted at the Greenhouse Seed Control and Certification Institute of Food Crops and Horticulture (BPSBTPH) Lampung Province, from July to August 2013. This research used Completely Randomized Design (CRD), with 5 treatment of KNO3 solution soaking (0.1%, 0.2%, 0.3%, 0.4% and without KNO3) and 3 replications. Every unit of experiments consisted of 100 seeds. Observed parameters included percentage of germination, mean of day germination and percentage of germination seeds per day. Bartlett test was employed to figure out the homogenity of datas. Then, analysis of variance was used to analyse datas. Honestly Significant Difference (HSD) was used to the advanced analysis. The entire data tested on 5% significant level. The result showed that soaking of tamarind seeds in water (without KNO3) during 24 hours gave the best response to break its dormancy, and the most effective concentration to break dormancy of tamarind seeds was 0.4%. Keywords: dormancy, germination, pottasium nitrate, tamarind

Identifikasi Dan Pemetaan Tanaman Aren (Arenga Pinnata) Plus Di Hutan Pendidikan Konservasi Terpadu Tahura Wan Abdul RachmanIdentifikasi Dan Pemetaan Tanaman Aren (Arenga Pinnata) Plus Di Hutan Pendidikan Konservasi Terpadu Tahura Wan Abdul Rachman Elya Artika; Duryat Duryat; Susni Herwanti
Jurnal Sylva Lestari Vol. 3 No. 1 (2015): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Great Forest Park of Wan Abdul Rachman has a suitable conditions for plus palm sugar (Arenga pinnata) plant, so that its plant has a great potential to be developed in the region. Related to its cultivation and development, the identification of plus palm sugar plant is needed in order to fulfill demand the planting material. The purpose of this research are to identify, to figure out the deployment location, and to create a spreading map of plus palm sugar plant. This research was conducted in the Integrated Conservation Education Forest At Great Forest Wan Abdul Rachman, collection of data was conducted by interview to all of the plus palm sugar plant tappers in the region, in order to collect the information about all the plus palm sugar plant that has productivity more than 15 liters/tree/day. The obtained result from the interview then it was verificated and categorized based on plus palm sugar plant criteria. Data of plus palm sugar plant, then recorded and overlayed in the map of base area At Great Forest Wan Abdul Rachman, to create a spreading map of plus palm sugar plant. This research showed that there were 16 plus palm sugar plant identified. Most of the plus palm sugar (93.75 %) growth on altitude of 400 - 525 upper sea level.Palm plus that have high productivity its those that growth with less of competition and managed in a good way. Keywords:Tahura Wan Abdul Rachman, distribution map, identification, plus palm sugar plant

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

Pengaruh Ukuran Berat Benih Terhadap Perkecambahan Benih Merbau Darat (Intsia Palembanica) Windi Wulandari; Afif Bintoro; Duryat Duryat
Jurnal Sylva Lestari Vol. 3 No. 2 (2015): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

The demand of mirabow wood is increasing nowdays, where as the existence species in the nature is getting reduced. Therefore, it's preservation efforts are urgent to be done. Seed size was correlated with it's vigor, where heavy seeds relatively have a better vigor, compare to the light one. The research was aimed to determine the effect of seed size to percentage of germination, average days to germinate, germination value and germination power of mirabow seeds. The research was conducted in greenhouse of Agriculture Faculty Lampung University on November 2013 to January 2014. The research was arranged in Complete Random Design (CRD), with 3 treatments and 4 replications. Seed are classified based on the weight of seed is heavy weight, medium weight, and light weight. Each unit of experiments was used 100 mirabow seeds. The observed variables were consisted of germination percentage, average day to germination, germination value, and germination power. Data analysis methods used were homogeneity of variance, variance analysis, and least significant of difference test at 5% significant level. The results showed that seed size of mirabow has a positive effect to the germination. The heavy weight of seed (> 3.49 grams) gave a better response for germination percentage 80.250% and germination value 1.595 %/day compared with the medium weight (2.36--43.49 grams) and light weight (< 2.36 grams). Keywords: germination, mirabow, seed size

Title

Found 12 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 12 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 12 Documents
Search