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Jurnal Wana Tropika
Published by Institut Pertanian Stiper Yogyakarta
ISSN : 20887019     EISSN : 28290054     DOI : https://doi.org/10.55180
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Forest Planning Forest Policy Forest Ecology Forest Resources Utilization Forest Ergonomics Forest Inventory Forest Product Silviculture Management of Regional Ecosystems
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 118 Documents
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Study Produktivitas dan Efisiensi Penebangan Mekanis Tanaman Eucalyptus sp. Di Hutan Tanaman Industri Gaol, Santo Wibowo Lumban; Suwadji, Siman; Woesono, Hastanto Bowo
Jurnal Wana Tropika Vol 13 No 1 (2023): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i1.509

Abstract

The use of wood harvesting equipment greatly helps the company to achieve the goals, namely: (1) speed up the process of carrying out work; (2) carrying out the kind of work that cannot be done by human labor; and (3) it is done for reasons of efficiency, limited labor, security and economic factors. Therefore, in order for the goal to be achieved, it is necessary to choose tools that are appropriate, economical and in accordance with working conditions. The selection of inappropriate tools can result in not achieving the expected goals and can cause damage to the tool itself. In the process of logging carried out at PT. RAPP on fully mechanical and semi-mechanical systems uses different logging tools. Each tool in logging activities has its own disadvantages and advantages. So it is necessary to conduct research on comparing the productivity and efficiency of logging using chainsaws and excavator attachment tree shear on Eucalyptus sp plants. Based on the results of the test analysis conducted, the average chainsaw productivity of STIHL MS 382 was 11.32 m³ / hour smaller than the productivity of excavator KOBELCO SK-130 HD with attachman tree shear Dymax 14 In " of 27.34 m³ / hour.   As for the average operational cost of the STIHL MS 382 chainsaw of Rp.  7,043/m³ smaller than excavator KOBELCO SK-130 HD with attachman tree shear Dymax 14 In" of Rp.  11.541/ m³.
Uji Efektivitas Berbagai Surfaktan pada Insektisida Tenchu dalam Menanggulangi Hama Thrips sp. pada Tanaman Induk Acacia crassicarpa di Rumah Tanaman Induk Kerinci Central Nursery 1 East Gerry; Yuslinawari
Jurnal Wana Tropika Vol 13 No 1 (2023): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i1.518

Abstract

The Nursery Department is the department responsible for ensuring the success of Acacia crassicarpa plants at an early stage by caring for and maintaining the quality and quantity of the seeds before planting them in the planting area. One of the disturbances that threatens the quality and quantity of seed production is the presence of Thrips sp. pest attacks. One of the Thrips sp. pest control techniques. with the application of insecticides with appropriate surfactants. Therefore, it is necessary to test various surfactants on Tenchu ​​20 SG insecticides which are appropriate in tackling Thrips sp. pest attacks. This study aims to determine the most appropriate surfactant in the Tenchu ​​20 SG insecticide in tackling Thrips sp. which attacks the mother plant Acacia crassicarpa. This research was conducted using a completely randomized design (CRD) with Least Significant Difference (LSD) follow-up test. The number of treatments in this study consisted of 5 treatments where each complete treatment with 3 repetitions used 72 sample plants so that the total sample plants used were 360 ​​plants. The parameters observed were the incidence and severity of Thrips sp.. The results showed that there was a decrease in the incidence and severity of Thrips sp. the largest is the type of Ronstick surfactant. The incidence rate and severity of Thrips sp. before application, namely 100% while after application, the incidence rate of Thrips sp. that is equal to 66.67% and the severity of Thrips sp. that is equal to 38.43%.
Perbaikan Sifat Perekatan Kayu Sengon dengan Perlakuan Permukaan Sushardi; Hadi, Didik Surya
Jurnal Wana Tropika Vol 13 No 1 (2023): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i1.595

Abstract

The usage in the types of wood as the raw material of industry should be appropriate with the basic nature of wood in order to produce the forest’s product with good quality. This research was aimed to : 1) learn the relationship between the different parts of wood and the treatment of surface toward glue’s nature of sengon wood and find out the factors that were most influenced, 2) Handle the weak of glue’s strength because of the influence in a part of gubal and teras wood with the treatment of the surface. The design of this research used the factorial experiment arranged in the design of completely random, with the continuing Turkey test. The factor used in this research consisted of part of the wood (gubal and teras wood) and the treatment of the surface (without treatment, NaOH, ethanol, and alcohol bensen). The observed parameter included the density, the glue’s strength, and the damage to wood because of dry and wet air. The result of this research indicated glue’s nature was really most influenced by the part of the wood and the treatment of the surface. The average rate in the best nature of glue for sengon wood was produced in the part of teras wood, namely the glue’s strength in the dry air, the wood damage in dry air, the strength of wet glue, the damage of wet wood were 42,50 kg/cm2, 80,25 %, 23,61 kg/cm2, 44,92. The average rate in the best nature of glue for sengon wood was produced in the treatment of alcohol bensen, namely the glue’s strength in dry air, the wood damage on dry air, the strength of wet glue, and the damage of wet glue were 43,47 kg/cm2, 87,513 %, 24,375 kg/cm2, and  48,62 %.
Pemodelan Hubungan Tinggi dan Diameter Eucalyptus pellita Umur 30 Bulan Suhartati, Tatik; Wahyudiono, Sugeng; Purwadi; Michael
Jurnal Wana Tropika Vol 13 No 1 (2023): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i1.596

Abstract

Inventory on Plantation Monitoring Assessment (PMA) Eucalyptus pellita at the aged of 30 months, measuring total height (h) and diameter at breast height (dbh). Height measurements were done using the Vertex. Measuring the total height of a tree whose crown has started to close (overlap)  requires more time to find the highest point of the tree, it is necessary to overcome it with a tool that is a height estimator model through the relationship between height and diameter at breast height (h-dbh). The study was conducted using two compartments of Eucalyptus pellita stands at the aged of 30 months. Sampling conducted by Systematic Sampling with Random Start. The data measured were total height (h) and diameter at breast height (dbh). Simple linear regression modeling h-dbh compiled for each compartment then carried out a goodness of fit test and validation using the Bias, SA and SR values, after that the regression line similarity was tested. The results showed that the two compartments have regression equations with the same slope and intercept, so that the two compartments can be threated as one dataset and the total height in the two compartments studied can be estimated using the equation h = 6,968 + 0,844 dbh.
Analisis Vegetasi Penyusun Asmin Tropical Rain Forest Conservation 2, PT. Asmin Bara Bronang, Kapuas, Kalimantan Tengah Budi, Suwito Setyo; Prijono, Agus; Kusumaningsih, Karti Rahayu
Jurnal Wana Tropika Vol 13 No 1 (2023): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i1.600

Abstract

Asmin Tropical Rain Forest Conservation 2 is a tropical natural forest which is a conservation area of ​​PT Asmin Bronang Kapuas, Central Kalimantan. The designation of new areas was carried out in 2018 and there was no research in the area that required data collection on the types of constituents of the area. The purposes of this research were to determine species composition, species diversity index, species evenness index, species richness index, and species dominance index. The method used in this study was collecting data on plants in area of ​​54.6 hectares with a sampling intensity of 1% using the Uniform Systematic Distribution Sampling with Random Start pattern. There are   14 plots in the form of nested samples with designations for 4 levels of plants (seedlings, saplings, poles, and trees). Results of the research showed that vegetation species composition was dominated by Shorea smithiana (Mahambung) of the Dipterocarpaceae family. Shorea parvifolia (Red Meranti), Euzyderoxylon zwageri (Ulin), Shorea smithiana (Mahambung), Mezzetia parviflora (Pisang-pisang), Syzygium spp. (Jambu-jambu), and Memecylon sumatrense (Kamasulan) are the 6 species that have the best regeneration rate, which are found at all plant levels. The highest IVI was Shorea smithiana (Mahambung) at the seedling was 46.55, pole 55.68, and tree 32.02 levels. At the sapling level, the highest IVI was Baccaurea bracteata Muell (Rambai forest) was 28.76. The species diversity index from seedling to pole level was moderate. At the tree level, the species diversity index was high (3.23). Species evenness index from seedling to tree level including height (0.82-0.92). The species richness index from seedling to pole was moderate. At the tree level, the species diversity index was high (7.45). The species dominance index of all levels was included in the low category (0.05-0.15).
Pemantauan Jumlah Batang Eucalyptus pellita Umur 6 Bulan Berdasarkan Hasil Foto Drone Wahyudiono, Sugeng; Suhartati, Tatik; Yudi
Jurnal Wana Tropika Vol 13 No 2 (2023): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i2.966

Abstract

The use of unmanned aircraft (UAV) or drones, apart from being used for mapping, can be a solution for quickly obtaining information and carrying out forest inventories with very detailed resolution results. Plantation Monitoring Assessment (PMA) aged 6 months is an initial inventory activity, later the data from PMA 6 will be the basic data for subsequent PMA. So, with drones, it is hoped that satisfactory results will be obtained. Apart from that, drones can be used to count the number of live and dead trees as well as empty spots. This research aims to compare the results of tree calculations directly in the field with the results of drone photos. This research was carried out on 6 month old Eucalyptus pellita plants in compartment A034, Baserah Sector, PT. RAPP. Data collection was carried out using systematic random sampling with a sampling intensity of 1%. The data taken is in the form of data on the number of live and dead/empty plants in the field and photographed with a drone. The test was carried out to test the differences in the number of dead/empty plants directly in the field and calculations using drone photos, namely the t test. The results showed that there was no difference between the number of live and dead/empty plants in the field and from drone photos.
Budidaya Ulat Sutera Daun Singkong Hasil Agroforestry Sederhana di Widodomartani Ngemplak Sleman Yogyakarta Indonesia Prijono, Agus; Rawana; Nugroho, Yunianto Hargo
Jurnal Wana Tropika Vol 13 No 2 (2023): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i2.967

Abstract

Another Components simple agroforestry at Widodomartani ngemplak sleman yogyakarta indonesia is Cassava. Cassava for food can increase value economic with feed silkmoth samia ricini. The background that thus will sericulture  Samia ricini. The aims research were to determine time and product sericulture samia ricini. The method research  with sericulture samia ricini. The leaves cassava  for feed samia ricini. The  data collection on the time  for feed, percentage life larvae until coccon,  time results coccon, brieght coccon producted. The material researchers, larva Samia ricini 11 th day from 1 gr egg Samia ricini, the leaves cassava edibled and cassava karet non edible, with before feed leaves ricinus comunis. Samia ricini culture used silkmoth rearing rack. Results of the research showed that ecdysis procces 15 th day, after ecdysis increases actifity feeding very high until 21th day. Start coccon 22th day until 26th day the end larva last feeding leaves. The life percentage 95,87 %, feed cassava edible 94,89 %, an ond feed cassava non edible 96,53 %. The coccon producted start 22th day until 26th day , with weight rate coccon cassava edible 2.10264 gr, cassava non edible 2.109893 gr.
Pemanfaatan Limbah Kayu Ulin (Eusideroxylon zwageri) sebagai Bahan Pengawet untuk Mencegah Serangan Rayap Kayu Kering pada Kayu Jabon (Anthocephalus cadamba) Kusumaningsih, Karti Rahayu; Hadi, Didik Surya; Sebriliani, Agnestya Erica
Jurnal Wana Tropika Vol 13 No 2 (2023): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i2.968

Abstract

Eusideroxylon zwageri wood is a type of wood wich have high natural durability  that contains extractive compounds such as alkaloids, tannins, saponins, flavonoids, and phenolics that are toxic to wood-destroying organisms. The ironwood sawmill industry produces waste in the form of sawdust that has not been used but only disposed of into the environment. Therefore, that wood sawdust waste can be used as a natural wood preservative to preserve  wood whish have low natural durability such as   Anthocephalus cadamba.  In this study, A. cadamba wood preservation was carried out with irondust extract with various solution formulas, namely 5%, 10%. 15% and 20%. The purpose of this study was to know the effect of irondust extract solution formula as a preservative on the results of jabon wood preservation which includes absorption and retention of preservatives, mortality of dry wood termites, and the percentage of weight reduction of test samples after being fed to dry wood termites. The results of this research showed that the irondust extract solution formula had a significant effect on the absorption and retention of preservatives and the mortality of dry wood termites. The 20% irondust extract solution formula  resulted in a higher preservative retention and drywood termite mortality value than the 5%, 10% and 15% solution formula, which was 12.13 Kg/m3 for retention and 88% for drywood termite mortality.
Model Penduga Biomassa Hutan Mangrove Menggunakan Citra Satelit Sentinel -2A di Kabupaten Rembang Jawa Tengah Ramadhan, Ashari; Suwadji, Siman
Jurnal Wana Tropika Vol 13 No 2 (2023): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i2.1018

Abstract

Mangrove forest is one of the forests that has the highest carbon storage in the tropics and is very high compared to the average carbon storage in various other forest types in the world, which contains around 1.023 Mg of carbon per hectare. This study aims to obtain a model for estimating the biomass potential of mangrove forests in Rembang Regency by utilizing Sentinel-2A Satellite imagery and making a map of the distribution of mangrove forest biomass potential through the best equation model. Sampling was done by purposive systematic sampling method. The correlation test results obtained a value of 0.640 which states that there is a strong relationship between biomass and NDVI. Biomass estimation modeling uses equation models namely Linear, Quadratic, Power, and Exponential. Model selection is done by considering several parameters such as R², RMSE, Bias, χ²-hit, SA, and SR. The selected model for estimating mangrove forest biomass potential is the quadratic model ???? = 17.4 -110.2 ???????????????? + 220 ????????????????² with an R² value of 0.474, RMSE value of 51.55, Chi-square test result of 3.46 and has the highest score value. The potential biomass distribution map generated from the selected model consists of 3 classes, namely classes < 3.7 (tons/ha), 3.7-10.5 (tons/ha), 10.5-35.7 (tons/ha). Mangrove forests in Rembang Regency have dominant biomass potential in the 10.5-35.7 (tons/ha) class.
Valuasi Ekonomi Ekowisata Arboretum Aek Natonang Kecamatan Simanindo Kabupaten Samosir Provinsi Sumatera Utara dengan Pendekatan Travel Cost Method Saragih, Devi Fransiska; Bowo Woesono, Hastanto; Falah, M. Darul
Jurnal Wana Tropika Vol 13 No 2 (2023): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i2.1020

Abstract

Aek Natonang Arboretum Ecotourism in Samosir Regency, North Sumatra Province has natural beauty that can be used as a tourist attraction for every visitor. The natural beauty that is owned in reality is not calculated into economic value or market value, so it is important to do economic valuation. By doing this research, it can be known the characteristics of visitors, the amount of economic value of Aek Natonang Arboretum ecotourism based on the travel cost method and find out the factors that influence the intensity of visits. The economic valuation method used is the travel cost method. The travel cost method is applied to estimate the economic value of Aek Natonang Arboretum ecotourism by calculating the cost of travel expenses. Data on travel costs and the number of visits were collected through interviews using questionnaires to visitors within a certain period of time. Then proceed with multiple linear regression analysis to determine the factors that affect the intensity of ecotourism visits to Aek Natonang Arboretum. The results of economic valuation with the travel cost method obtained an average value of Rp238.170,00/visit and the economic value of Aek Natonang Arboretum ecotourism is Rp2.358.359.340,00/year. Factors that influence the intensity of visits are distance, length of travel and travel costs.

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