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Pidjath, Chartina
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Agriculture, Biological Sciences & Forestry

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KUALITAS PELET KAYU PADA BERBAGAI KOMPOSISI BAHAN DARI LIMBAH SERBUK KAYU BANGKIRAI DAN MERANTI MERAH Indrayanti, Lies; Afentina, Afentina; Yanarita, Yanarita; Pidjath, Chartina
Agrienvi: Jurnal Ilmu Pertanian Vol. 18 No. 1 (2024): Juni 2024: Journal Agrienvi
Publisher : Agrienvi: Jurnal Ilmu Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/aev.v18i1.15257

Abstract

Penelitian ini dilakukan untuk menguji kualitas pelet kayu dengan komposisi campuran limbah serbuk kayu Bangkirai berbanding Meranti Merah. Perbandingan komposisi berturut-turut yaitu 100:0, 75:25, 50:50, 25:75 dan 0:100, masing-masing tiga kali pengulangan. Hasil penelitian menunjukkan nilai kadar air, kadar abu, kadar zat mudah menguap, kadar karbon terikat dan nilai kalor masuk dalam standar SNI untuk semua perlakuan, kecuali nilai kerapatan. Nilai kadar abu dan nilai kalor masuk dalam standart Prancis (ITEBE), kecuali kadar air dan kerapatan. Pada standar Swedia nilai kerapatan, kadar abu dan nilai kalor memenuhi standar, kecuali nilai kadar air. Hasil analisis ragam perlakuan komposisi serbuk kayu menunjukkan perbedaan yang nyata hanya pada nilai kerapatan dan nilai kalor. Kerapatan dan nilai kalor terbaik pada komposisi Bangkirai dan Meranti Merah 100:0, diikuti dengan komposisi 75:25. Perbandingan komposisi bahan ternyata tidak mempengaruhi kualitas pelet, karena perlakuan terbaik pada komposisi 100% kayu Bangkirai. Pemanfaatan limbah Kayu Bangkirai prospektif untuk dijadikan pelet kayu dari segi kualitas, baik untuk konsumsi dalam negeri maupun ekspor, namun perlu perhatian dalam penanganan serbuk kayu untuk menurunkan kadar air, sehingga dapat meningkatkan nilai kerapatan.
Kualitas Papan Semen dari Partikel Bamban (Donax canniformis): Quality of Cement Board of Bamban (Donax canniformis) Particles Santoso, Mahdi; Luhan, Gimson; Putra, Apri Wijaya; Christy, Eva Oktoberyani; Silvianingsih, Yosefin Ari; Yanciluk, Yanciluk; Pidjath, Chartina
HUTAN TROPIKA Vol 19 No 1 (2024): Volume 19 Nomor 1 Tahun 2024
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v19i1.14252

Abstract

The aim of this research is to determine the influence of mixture rasio of cement/bamban particles on the quality of the cement boards. This research was conducted by four mixture rasio cement/bamban particles (w/w) that was 1.25/1, 1.5/1, 1.75/1 and 2/1. Bamban particles was immersion on hot water (boiling at 100°C) for 3 hours to remove the extractives compounds. The mixture ratio between cement and bamban particles was compressed for 1 hour at a pressure of 30 bar, followed by manual pressure (clamping) for 24 hours. The physical and mechanical properties of cement boards was conducted according to SNI 03-2104-1991 for wood-wool cement boards. The results of the study show that mixture rasio cement/bamban particles has a very significant effect on the quality of the resulting cement boards.
Kearifan Lokal Masyarakat Dayak Ngaju Dari Sistem Pertanian Tradisional Untuk Pendapatan Keluarga di Buntut Bali Kabupaten Katingan Kalimantan Tengah: Local Wisdom of the Dayak Ngaju Community from Traditional Agricultural Systems for Family Income in Buntut Bali, Katingan Regency, Central Kalimantan Yanarita, Yanarita; Tanduh, Yusintha; Silvianingsih, Yosefin Ari; Pidjath, Chartina; Madiyawati, Milad; Sudomo, Muhammad Fadhil Amiruddin; Afentina, Afentina
HUTAN TROPIKA Vol 19 No 2 (2024): Volume 19 Nomor 2 Tahun 2024
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v19i2.18627

Abstract

Local wisdom is knowledge and practices passed down by a group that serves as an identity and strategy carried out in meeting the needs of daily life. This research highlights the local wisdom of the Dayak Ngaju people of Buntut Bali village, Katingan, who use traditional farming systems for their livelihoods. This traditional farming system can not only be adapted to local conditions, but more importantly is able to contribute to food security and local ecological sustainability. The research methodology used was descriptive qualitative method with a field approach through observation and in-depth interviews with farmers who are members of the “Pamaran” farmer group. Data collected included crop types, cropping patterns and constraints faced by farmers. The results revealed that the Ngaju-Dayak community's cropping pattern is a polyculture farming system consisting of annual and seasonal crops. There are 15 types of annual plants dominated by durian and banana. While 14 types of annual crops are managed in rotation and intermittently, according to soil conditions and seasons. Simple economic formulas about the income obtained from the application of traditional agriculture show that crop yields cannot be guaranteed to be profitable, because the results are influenced by how many trees bear fruit that are seasonal, such as durian, langsat and rambutan. In traditional farming systems, there are also often wild plants that are used by the community that cannot be planted but are very popular as vegetables, such as: teken parei. Local wisdom in traditional farming systems needs to be maintained for the preservation of local species and increased innovation in the maintenance and improvement of crop products, especially fruits
Intensitas Serangan Hama pada Anakan Tanaman Hutan di Persemaian Permanen Tumbang Nusa Kalimantan Tengah: Intensity of Pest Attacks on Forest Seedlings in The Permanent Nursery of Tumbang Nusa Central Kalimantan Firdara, Eritha Kristiana; Pidjath, Chartina; Yosep, Yosep; Penyang, Penyang; Raskita, Raskita
HUTAN TROPIKA Vol 20 No 1 (2025): Volume 20 Nomor 1 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i1.20160

Abstract

This study aims to identify the types, frequency, and intensity of pest attacks on seedlings in the Permanent Nursery, Tumbang Nusa, Central Kalimantan. Nurseries play a vital role in supporting the rehabilitation and conservation of tropical rainforests. Pest attacks on seedlings can reduce plant productivity, cause seedling shortages, and hinder growth, ultimately affecting the success of forest rehabilitation efforts. The research was conducted through field surveys and direct observations to identify the types of pests attacking the seedlings.The results showed that six types of pests (grasshoppers, bagworms, crickets, nettle caterpillars, bush snails, and armyworms) attacked forest seedlings (Shorea balangeran, Alstonia spatulata, Tengkawang, and Shorea leprosula) in the Permanent Nursery managed by the Watershed and Protected Forest Management Center (Balai Pengelolaan Daerah Aliran Sungai dan Hutan Lindung) in Tumbang Nusa. The highest percentage of pest attacks on seedlings in the nursery was observed in Shorea balangeran (grasshoppers, 56%), Shorea leprosula (grasshoppers, 37%), Tengkawang (crickets, 51%), and Alstonia spatulata (grasshoppers, 34%).The intensity of pest attacks on the four seedling types in the nursery ranged from low to high damage categories (6% - 17%). The highest pest attack intensity occurred in Shorea balangeran at 17% (grasshoppers), Shorea leprosula at 11% (crickets), Tengkawang at 16% (crickets), and Alstonia spatulata at 10% (grasshoppers, bush snails, and armyworms). This study highlights the importance of nursery management, including seedling selection, routine fertilization, and weekly insecticide spraying, to minimize pest attacks and maintain seedling quality.
Rekayasa Kayu Eucalyptus pellita F. Muell Dengan Teknologi Oil Heat Treatment (OHT) : Wood Engineering Eucalyptus Pellita F. Muell With Oil Heat Treatment (Oht) Technology Siska, Grace; Christy, Eva Oktoberyani; Sihombing, Markus; Rizal, Moh; Pidjath, Chartina
HUTAN TROPIKA Vol 20 No 1 (2025): Volume 20 Nomor 1 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i1.20251

Abstract

Eucalyptus pellita F. Muell is a plant that is widely developed in Indonesia's Industrial Plantation Forest (HTI), because this plant is a fast growing wood. Eucalyptus pellita F. Muell wood has weaknesses in terms of durability quality and strength of its wood. Therefore, an environmentally friendly and effective application of technology is needed. Oil Heat Treatment (OHT) is one of the environmentally friendly and appropriate wood technologies because there are no chemicals during the treatment process. This study aims to determine the effect of the duration of OHT time of 1 hour, 2 hours and 3 hours with a temperature of 200 ± 2°C on changes in the physical properties of wood mechanics of Eucalyptus pellita F. Muell. The research results indicate that the heat treatment method known as Oil Heat Treatment (OHT) using used cooking oil can reduce the moisture content of wood over the duration of heating, as well as increase the density, Modulus of Elasticity (MoE), and Modulus of Rupture (MoR) of Eucalyptus pellita F. Muell wood, although the statistical analysis in the study showed that the treatment did not have a significant effect.
Heritabilitas Sifat Tinggi Pohon dan Diameter Batang Shorea balangeran (Korth.) Burck di Kebun Bibit Rakyat dan Shorea leprosula Miq di Kebun Benih Semai Universitas Palangka Raya: Heitability Of Tree Height and Stem Diameter of Shorea balangeran (Korth.) Burck In Community Nurseries And Shorea leprosula Miq in Sedling Seed Orchards and Community Nurseries of The University of Palangka Raya Sudomo, Muhammad Fadhil Amiruddin; Silvianingsih, Yosefin Ari; Pidjath, Chartina; Pindonta , Yopi Em
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.23913

Abstract

This study aims to estimate the heritability of tree height and stem diameter in two Dipterocarpaceae species, Shorea balangeran from the People’s Nursery and Shorea leprosula from the Seed Orchard of Universitas Palangka Raya. Both species play an important ecological and economic role as dominant components of peat swamp forests and lowland forests. Genetic parameters observed include genotypic variance, environmental variance, phenotypic variance, and heritability values calculated using analysis of variance (ANOVA) in a completely randomized design. The results indicate that variations in both traits are predominantly controlled by genetic rather than environmental factors. Shorea balangeran exhibited high heritability for tree height (86.18%) and stem diameter (84.25%). Likewise, Shorea leprosula showed similarly high heritability for height (85.72%) and diameter (88.53%). These high heritability values suggest that the traits are stable and heritable, making both species suitable as superior seed sources in tree improvement programs. The findings reinforce the importance of selecting plus trees to support conservation efforts and the production of high-quality seeds
Sifat Balok Glulam Kayu Terentang (Campnosperma auriculatum (Blume) Hook.F.) Berdasarkan Jumlah Lamina: Properties of Glue laminated Timber Beams from Terentang Wood (Campnosperma auriculatum (Blume) Hook.F.) Based on the Number of Laminae Sirait, Hizkia Ireni; oktoberyani christy, Eva; Indrayanti, Lies; Pidjath, Chartina; Penyang, Penyang; Koroh, Desy Natalia
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.23991

Abstract

The purpose of this study was to determine the effect of the number of laminae on the physical and mechanical properties of terentang wood glulam beams. Three types of glulam beams were manufactured with 3, 4, and 5 laminae, then glued using PVAc (polyvinyl acetate) adhesive with a glue spread of 200 g/m², vacuumed using the vacuum bagging method, and left in the vacuum bag for 24 hours. As a comparator, solid beams with the same cross-section (50 mm × 50 mm) were also prepared. The results indicated that the number of laminae had a very significant effect on water content and specific gravity, as well as a significant effect on the Modulus of Elasticity (MoE) and Modulus of Rupture (MoR). Tukey's test confirmed that the MoE and MoR of 3-layer glulam beams were not significantly different from those of the solid beam. This suggests that 3-layer glulam beams had mechanical performance equal to the solid beam and relatively better than 4- and 5-layer glulam beams. Increasing the number of laminae tended to decrease the MoE and MoR values of glulam beams. Based on the Indonesian wood strength classification, solid beams fall into strength class III, as do 3-layer and 5-layer glulam beams. The 4-layer glulam beam was classified as strength class IV. All glulam beams indicate no improvement in class compared to the solid beam.
Co-Authors Afentina, Afentina Christy, Eva Oktoberyani Gimson Luhan Grace Siska Indrayanti, Lies K. Firdara, Eritha Koroh, Desy Natalia Lies Indrayanti Madiyawati, Milad Mahdi Santoso Muhammad Fadhil Amiruddin Sudomo oktoberyani christy, Eva Penyang, Penyang Pindonta , Yopi Em Putra, Apri Wijaya Raskita, Raskita Rizal, Moh Sihombing, Markus Silvianingsih, Yosefin Ari Sirait, Hizkia Ireni Tanduh, Yusintha Yanarita, Yanarita Yanciluk, Yanciluk Yosep Yosep