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Sushardi
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Peningkatan Kualitas Ketahanan Air Kayu Lapis dengan Perlakuan Pelapisan Permukaan Sushardi; Woesono, Hastanto Bowo; Hadi, Didik Surya; Suwadji, Siman; Damayanty, Dhewy; Wardana, Wisnu
Proceedings Series on Physical & Formal Sciences Vol. 8 (2025): Prosiding Seminar Nasional Fakultas Pertanian dan Perikanan
Publisher : UM Purwokerto Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/pspfs.v8i.1492

Abstract

Kayu lapis memiliki banyak keunggulan, seperti kekuatan struktural yang baik dan harga yang relatif terjangkau. Namun, salah satu kelemahan utamanya adalah kemampuan menyerap air yang dapat menyebabkan pengembangan ketebalan yang tinggi. Salah satu solusi untuk mengatasi permasalahan tersebut dengan perlakuan pelapisan permukaan. Penelitian bertujuan untuk mengetahui peningkatan kualitas kayu lapis dengan perlakuan pelapisan permukaan terhadap ketahanan air. Penelitian menggunakan rancangan acak lenkap dengan uji lanjut Tukey. Faktor yang digunakan terdiri kayu lapis 3, 5 dan 7 lapis dan perlakuan pelapisan permukaan dengan cat. Parameter yang diamati adalah kadar air, kerapatan, absorbsi dan pengembangan tebal. Hasil penelitian menunjukkan kayu lapis 3, 5 dan 7 lapis dengan perlakuan pelapisan permukaan berbeda nyata terhadap absorpsi air dan pengembangan tebal. Jenis produk dan perlakuan pelapisan permukaan pengembangan tebal yang optimal pada kayu lapis 3 lapis perlakuan pelapisan permukaan 1,45%, sedangkan absorbsi yang optimal 40,66% kayu lapis 5 lapis. Nilai rata-rata kadar air 11,24%-12,07%, kerapatan 0,35%-0,41%, absorbsi 52,14 - 84,93 % dan pengembangan tebal 2,18%-5,56%.
PENINGKATAN KUALITAS LIST PROFILE DENGAN PERLAKUAN KOMPOSISI BAHAN PEREKAT Sushardi; Yuniarto
Jurnal Wana Tropika Vol 1 No 2 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

List profile is a mineral board product that more and more interested people use it. One of its advantage is the cheap cost, quick availability and more resistant against damaging organism attacks. From economy’s point list profile with adhesive plaster and filler rofing more expensive, so it required another type of adhesive which is stronger but cheaper cost. This research has the objection to find out the filler type and content of gips with low cost. The design of this research is complete random design continued by Tukey test. The factors were the filler type using “mendong” and rofing, and adhesive contents of 720 grams, 780 grams, and 840 grams to observed the water content, density, modulus of elasticity, modulus of rapture and its adhesive strength. The result indicated an interaction between the filler type and its content both influenced the water content and density. The average of water content, density, modulus of elasticity, modulus of rapture and adhesive strength were 17,6787-20,0729 %, 0,9575 – 1,1489 g/cm3 , 3172,7619 – 4831,6183 kg/cm2 , 25,8452 – 30,8413 kg/cm2 , and 1,9006 – 3,4287 kg/cm2 respectively. Keywords: List profile, mendong, rofing, gips
Perbandingan Struktur Anatomi Jati Unggul Nusantara (JUN) dengan Jati Plus Perhutani (JPP) Sushardi; Gustomo K., L. Surya
Jurnal Wana Tropika Vol 3 No 1 (2013)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

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PENGARUH LAMA PEREBUSAN DAN POSISI RADIAL TERHADAP KUALITAS VENIR KAYU KELAPA Sushardi
Jurnal Wana Tropika Vol 4 No 1 (2014)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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DAMPAK INDUSTRI HASIL HUTAN TERHADAP KESEJAHTERAAN MASYARAKAT: Impact of Forest Product Industry to Public Welfare Sushardi
Jurnal Wana Tropika Vol 6 No 2 (2016)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Kawasan hutan yang mempunyai fungsi pokok memproduksi hasil hutan digolongkan dalam hutan produksi. Hutan tanaman industri merupakan hutan tanaman yang dibangun dalam rangka meningkatkan potensi dan kualitas hutan produksi dengan menerapkan silvikultur intensif untuk memenuhi kebutuhan bahan baku industri hasil hutan. Dengan adanya pembangunan HTI maka diharapkan dapat menyelamatkan hutan alam dari kerusakan karena HTI merupakan potensi kekayaan alam yang dapat diperbaharui, dimanfaatkan secara maksimal dan lestari bagi pembangunan nasional secara berkelanjutan untuk kesejahteraan penduduk. Pembangunan dan pengelolaan HTI termasuk di dalamnya industri hasil hutan dalam skala luas dan jangka panjang adalah salah satu mekanisme untuk meningkatkan kesejahteran masyarakat, salah satunya yaitu dengan menyediakan lapangan kerja. Pengelolaan masyarakat dipusatkan pada kemampuan badan usaha untuk menyediakan kesempatan kerja dan kesempatan usaha bagi masyarakat. Kata kunci : Hutan Tanaman Industri, Dampak Industri, Kesejahteraan Masyarakat
SIFAT ANATOMI KAYU BAKAU (Rhizophora mucronata LAMK) Sushardi; Kodi, Hala
Jurnal Wana Tropika Vol 8 No 1 (2018)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Mangrove is one type of mangrove forest plants that has enormous potential and benefits. Almost all parts of mangrove plants can be used; the leaves are for medicine, the skin is for producing tanners and wood for charcoal, building materials and so on. To make more optimal use of mangrove wood, a close study of the properties of the wood is needed. Therefore, knowing the dimensions and value of mangrove fiber derivatives is a very important thing to do. This study aims to determine the dimensions and values of mangrove wood derivatives and their possible uses.The study used a completely randomized factorial design with Tukey's further tests. The factors used are the location of the trunk axial direction (base, middle and tip) and radial direction (near the heart and near the skin). The parameters observed included fiber length, fiber wall thickness, lumen diameter, fiber diameter and fiber dimension derivative values.The results showed that the average value of fiber length was 0.67 mm, fiber wall thickness was 4.25 µ, lumen diameter was 6.71 µ, fiber diameter was 13.83 µ. The average value of fiber dimension derivatives is; runkel number 1.29, muhlsteph number 77.23%, weaving power 10.46, sensitivity coefficient 0.31, and flexibility value 0.48. Based on the value of fiber quality and its derivative value, in general mangrove wood includes the quality of pulp and paper class III, where wood fibers are short to medium size, cell walls and medium lumens. Keywords: Dimensions and values of fiber derivatives, mangrove wood
SIFAT WETABILITAS DAN WARNA KAYU SENGON DAN WARU GUNUNG SEBAGAI BAHAN MEBEL Sushardi
Jurnal Wana Tropika Vol 8 No 2 (2018)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Penggunaan jenis-jenis kayu sebagai bahan baku industri harus disesuaikan dengan sifat dasar kayu agar dapat menghasilkan produk hasil hutan dengan kualitas yang baik. Penelitian faktorfaktor tersebut perlu dilaksanakan dengan ketat untuk meningkatkan pengetahuan sifat-sifat bahan baku kayu agar sesuai dengan tujuan penggunaannya. Penelitian ini bertujuan mengetahui sifat wetabilitas dan warna kayu sengon dan waru gunung pada arah radial sebagai penciri khas jenis kayu, dan mengetahui kemungkinan penggunaannya.Penelitian ini menggunakan rancangan acak lengkap (Completely Randomized Design) dengan uji lanjut Tukey. Faktor yang digunakan adalah jenis kayu (kayu sengon dan waru gunung) dan bagian arah radial kayu (kayu dekat hati dan dekat kulit). Parameter yang diteliti adalah berat jenis, wetabilitas dan warna kayu. Hasil penelitian menunjukkan bahwa warna kayu sengon dekat kulit lebih terang yaitu sebesar 67,12, sedangkan waru gunung dekat hati lebih gelap sebesar 39,32. Kayu sengon mempunyai berat jenis, wetabilitas dan warna kayu rata-rata sebesar 0,24, 4277,32 mm dan 61,92, sedangkan waru gunung 0,49, 2524,01 mm dan 49,31. Kayu dengan berat jenis rendah (kayu sengon) mempunyai ciri khusus wetabilitas sedang (mudah dibasahi cairan) dengan warna kayu terang, sedangkan kayu berat jenis tinggi mempunyai ciri khusus wetabilitas rendah dengan warna kayu gelap. Bagian kayu dekat kulit mempunyai berat jenis, wetabilitas dan warna kayu rata-rata sebesar 0,35, 3690,68 mm, dan 63,21, sedangkan waru gunung 0,38, 3110,65 mm dan 48,02. Kayu sengon dan waru gunung dapat digunakan untuk produk mebel, karena termasuk kedalam berat jenis ringan sampai sedang, dengan wetabilitas dan warna kayu terang sampai sedang. Kata Kunci : Wetabilitas, warna kayu, sengon, waru gunung
PERANAN KOMPONEN EKSTRAKTIF KAYU DALAM MENGURANGI PEMANASAN GLOBAL Sushardi
Jurnal Wana Tropika Vol 9 No 2 (2019)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Global warming is happened cause by prolonged drought, forest fires, floods and landslides. High carbon emissions from industries, burning of forests and peatlands exacerbate these conditions. Excessive gas emission has the potential to be a barrier to the reflection of infrared rays from the earth into the atmosphere and it has a warming effect, which is then called the greenhouse effect. Wood is one of the plants that have extractive components that can absorb carbon emissions most effectively. The study aims to determine the extractive components of sengon and johar wood that can capture formaldehyde emissions. The research design used a one-factor Complete Randomized Design, namely the type of sengon wood and johar wood with analyzed using the SPSS program. The parameters observed were specific gravity, extractive content and formaldehyde emission. The results showed that sengon and johar wood types had different specific gravity, extractive content and formaldehyde emission. The average density of sengon wood is 0,236, extractive which is soluble in cold water 3,653%, in hot water 4,158%, soluble alcohol bensen 3,660%, and formaldehyde emission 0,927 ppm. The average density of johar wood is 0.650, extractive which is soluble in cold water 5.020%, in hot water 8.740%, soluble alcohol bensen 10.310% and formaldehyde emission 0.473 ppm. Extractive components that play an important role in absorbing carbon emissions are extractive components that dissolve in cold water and hot water, where the extractive component contains polar organic compounds, such as sugar, dyes, tannin, gum, protein and starch. Keywords: Extractive, global warming, formaldehyde emissions
KARAKTERISTIK MINYAK SEREH WANGI DARI DAERAH ISTIMEWA YOGYAKARTA Woesono, Hastanto Bowo; Sushardi; Purwanto, Muhammad Amir
Jurnal Wana Tropika Vol 11 No 2 (2021): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v11i2.182

Abstract

The market needs will be fragrant citronella oil increases, but it is not worth the production and quality of fragrant Lemongrass oil is produced. The purpose of this study, that is, to figure out the best combination of sources of raw materials and factors of the size of the craftmanship the leaves against the yield and quality of fragrant citronella oil. Research design used was Random Complete Factorial Design, using two combination treatment that is the source of the raw material and the size of the craftmanship leaves. The observed parameters include: color, yield, citronellal, citronellol and geraniol. The results of this study indicate that the color of the resulting eligible SNI 06-3953-1995 that is pale yellow to yellow-brown. Combination treatment of the source of the raw material and the size of the leaf is very different from real craftmanship against yield oil of citronella scented with the highest average on the source of raw material for the village of Wedomartani, craftmanship and size of 0.93% leaves 10 cm that is 0.94%. Chemical content of citronellal shows that the source of the raw material and the size of the different leaf craftmanship not real. Chemical content of citronellol and of the raw materials sources that geraniol very different real, whereas the size of different leaf craftmanship not real. The average content of chemical sitronellol and geraniol at the source of the raw materials of the highest village of Kebonharjo, the content of citronellol 13.11% and geraniol content 34.84%. Key words: raw material sources, treatment, quality of citronella oils
Pengaruh Kelas Umur dan Metode Sadapan Terhadap Produksi Sadapan Getah Pinus Bowo Woesono, Hastanto; Sushardi; Pamungkas, Muhammad Bagas
Jurnal Wana Tropika Vol 12 No 1 (2022): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v12i1.214

Abstract

Pine resin is a non-timber forest product, which has the potential to be developed in Indonesia. One of the pine resin products is gondorukem which has a very wide market. The purpose of this study was to determine the best tapping method, in order to obtain optimal production of pine resin tapping in three age classes of pine trees, namely age classes III, IV and V. The results showed that the average yield of pine resin tapping with the quare method was 18 ,88 gr and drill method 17,77 gr. Meanwhile, the highest average production of sap in age class III was 26.11 g and the lowest was in age class V of 10.21 g. The results also showed that along with the increase in the age class of the plant, the production of tapping sap also decreased significantly, both for tapping pine sap using the drill method, and tapping pine sap using the quare method. The results also showed that as the age class of the plant increased, the use of the quare method gave a higher average yield of 18.88 gr than the drill method of 17.77 gr. Keywords : Age class; tapping method; pine resin production
Co-Authors Bowo Woesono, Hastanto Damayanty, Dhewy Ganis Lukmandaru Gustomo K., L. Surya Hadi, Didik Surya Kodi, Hala Pamungkas, Muhammad Bagas Purwanto, Muhammad Amir Siman Suwadji, Hastanto BW dan Didik Surya Hadi Suwadji, Siman T.A. Prayitno Wisnu Wardana, Wisnu Woesono, Hastanto Bowo Y. Suranto Yuniarto