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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Indonesian Journal of Forestry Research Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) REINWARDTIA Jurnal Penelitian Sosial dan Ekonomi Kehutanan Journal of Science Innovare Indonesian Journal of Applied Environmental Studies Eduvest - Journal of Universal Studies IIJSE Reinwardtia Indonesian Journal of Forestry Research

Dolly Priatna

Universitas Pakuan

Author-ID : 3599571

Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology Neuroscience Social Sciences

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RECOVERY OF A LOWLAND DIPTEROCARP FOREST TWENTY TWO YEARS AFTER SELECTIVE LOGGING AT SEKUNDUR, GUNUNG LEUSER NATIONAL PARK, NORTH SUMATRA, INDONESIA Priatna, Dolly -; Kartawinata, Kuswata -; Abdulhadi, Rochadi -
REINWARDTIA Vol 12, No 3 (2006): Vol. 12, No. 3
Publisher : Research Center for Biology

PRIATNA, D.; KARTAWINATA, K.; ABDULHADI, R. 2004. Recovery of a lowland dipterocarp forest twenty two years after selective logging at Sekundur, Gunung Leuser National Park, North Sumatra, Indonesia. Reinwardtia 12 (3): 237â255. â A permanent 2-ha plot of lowland forest selectively logged in 1978 at Sekundur, Gunung Leuser National Park,which is also a Biosphere Reserve and a World Heritage Site, North Sumatra,was established and investigated in 1982. It was re-examined in 2000, where remeasurement and reidentification of all trees with DBH =10 cm were made.The areas of gap, building and mature phases of the canopy were also measured and mapped. Within this plot, 133 species, 87 genera and 39 families were recorded, with the total number of trees of 1145 or density of 572.5/ha. Euphorbiaceae was the richest family with 18 species (13.5 % of the total) and total number of trees of 248 (21.7 % of the total or density of 124 trees/ha.The most important families were Dipterocarpaceae with IV (Importance Value) = 52.0, followed by Euphorbiaceae with IV = 51.8. The most prevalent species was Shorea kunstleri (Dipterocarpaceae) with IV =24.4, followed by Macaranga diepenhorstii (Euphorbiaceae) with IV = 12.4. They were the species with highest density, 34 trees/ha and 23.5 trees/ha, respectively. During the period of 18 years there has been no shift in the richest families, most importantfamilies and most important species. Euphorbiaceae was the richest family and Dipterocarpaceae was the most important family, with Shorea kunstleri as the most important species with highest importance value throughout the period. The number of species increased from 127 to 133 with increase in density by 36.8% , from 418.5 trees/ha to 572.5 trees/ha. The mortality was 25.57 % or 1.4 % per year. The diameter class distribution indicated that the forest recovery has not been complete. Trees were small, comprising 67.6 % with diameters of 10-20 cm and only two trees had diameters of 100 cm, i.e.Melanochyla caesia and Lithocarpus urceolaris. Based on the basal area of all species, the logged-over forest at Sekundur is estimated to reach the situation similar to undisturbed primary forest in 56 years after logging, but on the basis of basal area of Dipterocarpaceae such condition could be achieved in 172 years.The canopy has not fully recovered and the complete closure of gaps is estimated to take 53 years since the logging started. The canopy consisted of gap phase (24.6 %), building phase (19.7 %) and mature phase (55.7 %). During the period of 18 years the tree mortality was 25.57 % or the rate of 1.4 %/year.Euphorbiaceae experienced the highest mortality, particularly among the trees with diameters of 10-20 cm.Mortality decreased with the increase of diameters.During the same period 520 new trees of 16 species were recruited.The densities of 53 % of the species experienced changes of only one tree or no changes at all.Drastic increase in tree population occurred in light demanding species,such as Baccaurea kunstleri, Endospermum diadenum,Mallotus penangensis,Sapium baccatum and Macaranga diepenhorstii .

Habitat Selection and Activity Pattern of GPS Collared Sumateran Tigers Dolly Priatna; Yanto Santosa; Lilik Budi Prasetyo; Agus Priyono Kartono
Jurnal Manajemen Hutan Tropika Vol. 18 No. 3 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (805.358 KB)

Although translocation has been used in mitigating human-carnivore conflict for decades, few studies have been conducted on the behavioral ecology of released animals. Such information is necessary in the context of sustainable forest management. In this study we determine the type of land cover used as main habitat and examine the activity pattern of translocated tigers. Between 2008 and 2010 we captured six conflict tigers and translocated them 74-1,350 km from their capture sites in Sumatera. All tigers were fitted with global positioning system (GPS) collars. The collars were set to fix 24-48 location coordinates per day. All translocated tigers showed a preference for a certain habitat type within their new home range, and tended to select the majority of natural land cover type within the landscape as their main habitat, but the availability of natural forest habitat within the landscape remains essensial for their survival. The activity of male translocated tigers differed significantly between the six time intervals of 24 hours, and their most active periods were in the afternoon (14:00-18:00 hours) and in the evening (18:00-22:00 hours). Despite being preliminary, the findings of this study-which was the first such study conducted in Sumatera-highlight the conservation value of tiger translocation and provide valuable information for improving future management of conflict tigers.

MANAGEMENT STRATEGY OF ELEPHANT RIDING AT THE ZOO Sata Yoshida Srie Rahayu; Dolly Priatna; Rosadi Rosadi; Suryanto Suryanto
Indonesian Journal of Forestry Research Vol 9, No 1 (2022): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2022.9.1.29-47

Elephant Riding (ER) in zoos has become a matter of public interest, raising debates among experts regarding animal ethics, elephants’ welfare, and human safety. Through the submission of the Middle Hypothesis that ER tends to enhance human knowledge about conservation, this study’s aim is to provide strategies to help zoo managements in their works based on the basic principles of wildlife conservation and protection, especially Sumatran elephants. The participants’ knowledge was measured using questionnaires distributed to two groups of respondents: people who have and people who have not utilized ER services. Meanwhile, the strategy was recommended through the Analytical Hierarchy Process of 17 expert respondents. According to the independent sample t-test performed with 95% confidence level, human knowledge of elephant conservation increased significantly through ER. Furthermore, experts with consistency ratios (CR) ≤ 0.1 selected a strategy where environmental quality was prioritized as a recommended strategy in ER management. This strategy is to put forward the principles guaranteeing the elephants’ welfare, which has a criterion weight of 0.40717. The other recommended strategies include conducting conservation education (0.23973), ensuring the safety of visitors (0.22972), and improving the welfare of the community around zoo (0.12338).

Sediaan Karbon pada Hutan Bekas Terbakar di PT Bumi Andalas Permai, Provinsi Sumatera Selatan Nur M HERIYANTO; Dolly Priatna; Ismayadi Samsoedin
Jurnal Penelitian Hutan dan Konservasi Alam Vol 18, No 2 (2021): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphka.2021.18.2.111-122

Kebakaran sering terjadi di hutan hujan tropis terutama di musim kemarau. Salah satu dampaknya yaitu berkurangnya biomassa dan menurunkan kandungan karbon. Tujuan penelitian adalah melakukan evaluasi sediaan karbon pada hutan bekas terbakar berulang. Penelitian dilakukan pada bulan Oktober 2019 di hutan sekunder terbakar pada tiga lokasi terpilih yaitu lokasi kebakaran tahun 2015, lokasi kebakaran tahun 2017, serta lokasi kebakaran berulang tahun 1997, 2015 dan 2017 yang berada di areal kerja PT Bumi Andalas Permai, Provinsi Sumatera Selatan. Pada masing-masing lokasi, plot penelitian dibuat seluas satu Ha (100 x 100 m). Penelitian menunjukkan bahwa komposisi tegakan tingkat pohon, tiang dan semai di hutan terbakar tahun 2015 didominasi jenis uba (Syzygium sp.), pada hutan terbakar tahun 2017 didominasi jenis Acacia crassicarpa dan Macaranga sp., sedangkan pada hutan yang terbakar berulang tahun 1997, 2015 dan 2017 didominasi oleh jenis gelam (Melaleuca cajuputi). Sediaan karbon pada tegakan berdiameter ≥10 cm secara umum sangat rendah, yaitu sebesar 20,06 ton C/Ha pada tegakan hutan terbakar tahun 2015, sebesar 0,42 ton C/Ha di hutan terbakar tahun 2017 dan sebesar 0,16 ton C/Ha pada hutan terbakar berulang tahun 1997, 2015 dan 2017. Kebakaran hutan berulang berdampak pada turunnya biomassa dan jumlah pohon per-ha, sehingga untuk memulihkannya diperlukan restorasi dan kerja yang ektra keras mencegah kebakaran.

KEANEKARAGAMAN HAYATI DAN ROSOT KARBON PADA RAWA-GAMBUT DI BUKIT BATU, KABUPATEN BENGKALIS, PROVINSI RIAU (Biodiversity and Carbon Sinks on Peat Swamps in Bukit Batu, Bengkalis Regency, Riau Province) N. M. Heriyanto; Dolly Priatna; Ismayadi Samsoedin
Jurnal Penelitian Hutan Tanaman Vol 17, No 1 (2020): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

ABSTRACTResearch on biodiversity and carbon sinks is still needed by the government to support policies in order to manage forests sustainably. The purpose of this study was to analyze the composition of species, stand structure, biomass and carbon sinks on peat-swamps in Bukit Batu, Bengkalis Regency, Riau Province. The research method was carried out with an inventory of vegetation to determine the potential of stands, rejuvenation, biomass and carbon sinks. Sample plots were taken randomly in the form of measuring plots of 100 m x 100 m in each condition of old secondary forest, young secondary forest and old scrub forest in the peat-swamp protection forest. The species commonly found and evenly spread in all conditions of the peat-swamp forest were Gymnacranthera paniculata, Shorea teysmanniana, and Shorea gibbosa. The structure of the third stand condition of the peatswamp forest was still like a peat-swamp natural forest with the structure of the curve was in the shape of an inverted letter “J.” The three conditions of the peat-swamp forests have high biomass and carbon deposits with the highest content of those that were found in the old secondary forests, and the lowest was in the old scrub forests. The condition of the old secondary forests has the highest potential to absorb carbon dioxide in the air. The tree species that are potentially used as seed sources were S. teysmanniana, S. gibbosa and Diospyros maingayi. ABSTRAK Penelitian keanekaragaman hayati dan rosot karbon masih diperlukan pemerintah untuk mendukung kebijakan dalam rangka mengelola hutan secara berkelanjutan. Tujuan penelitian ini adalah untuk menganalisis komposisi jenis, struktur tegakan, biomassa dan rosot karbonnya pada rawa-gambut di Bukit Batu, Kabupaten Bengkalis, Provinsi Riau. Metode penelitian dilakukan dengan cara inventarisasi vegetasi guna mengetahui potensi tegakan, permudaan, biomassa dan rosot karbon. Sampel plot diambil secara acak berupa plot berukuran 100 m x 100 m di setiap kondisi hutan sekunder tua, hutan sekunder muda dan hutan belukar tua pada hutan lindung rawa-gambut. Jenis Gymnacranthera paniculata, Shorea teysmanniana dan Shorea gibbosa ditemukan tersebar merata di setiap kondisi hutan rawa-gambut. Struktur tegakan ketiga kondisi hutan rawa-gambut masih seperti hutan alam rawa-gambut dengan kurva struktur tegakan berbentuk huruf “J” terbalik. Ketiga kondisi hutan rawa-gambut tersebut memiliki biomassa dan simpanan karbon yang tinggi dengan biomassa dan simpanan karbon tertinggi ada di hutan sekunder tua dan terendah di hutan belukar tua. Kondisi hutan sekunder tua berpotensi untuk menyerap karbon dioksida di udara yang tertinggi. Pohon yang potensial dijadikan sumber benih adalah pohon S. teysmanniana, S. gibbosa, dan Diospyros maingayi.

RECOVERY OF A LOWLAND DIPTEROCARP FOREST TWENTY TWO YEARS AFTER SELECTIVE LOGGING AT SEKUNDUR, GUNUNG LEUSER NATIONAL PARK, NORTH SUMATRA, INDONESIA Dolly - Priatna; Kuswata - Kartawinata; Rochadi - Abdulhadi
REINWARDTIA Vol 12, No 3 (2006): Vol. 12, No. 3
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v12i3.48

PRIATNA, D.; KARTAWINATA, K.; ABDULHADI, R. 2004. Recovery of a lowland dipterocarp forest twenty two years after selective logging at Sekundur, Gunung Leuser National Park, North Sumatra, Indonesia. Reinwardtia 12 (3): 237–255. — A permanent 2-ha plot of lowland forest selectively logged in 1978 at Sekundur, Gunung Leuser National Park,which is also a Biosphere Reserve and a World Heritage Site, North Sumatra,was established and investigated in 1982. It was re-examined in 2000, where remeasurement and reidentification of all trees with DBH =10 cm were made.The areas of gap, building and mature phases of the canopy were also measured and mapped. Within this plot, 133 species, 87 genera and 39 families were recorded, with the total number of trees of 1145 or density of 572.5/ha. Euphorbiaceae was the richest family with 18 species (13.5 % of the total) and total number of trees of 248 (21.7 % of the total or density of 124 trees/ha.The most important families were Dipterocarpaceae with IV (Importance Value) = 52.0, followed by Euphorbiaceae with IV = 51.8. The most prevalent species was Shorea kunstleri (Dipterocarpaceae) with IV =24.4, followed by Macaranga diepenhorstii (Euphorbiaceae) with IV = 12.4. They were the species with highest density, 34 trees/ha and 23.5 trees/ha, respectively. During the period of 18 years there has been no shift in the richest families, most importantfamilies and most important species. Euphorbiaceae was the richest family and Dipterocarpaceae was the most important family, with Shorea kunstleri as the most important species with highest importance value throughout the period. The number of species increased from 127 to 133 with increase in density by 36.8% , from 418.5 trees/ha to 572.5 trees/ha. The mortality was 25.57 % or 1.4 % per year. The diameter class distribution indicated that the forest recovery has not been complete. Trees were small, comprising 67.6 % with diameters of 10-20 cm and only two trees had diameters of 100 cm, i.e.Melanochyla caesia and Lithocarpus urceolaris. Based on the basal area of all species, the logged-over forest at Sekundur is estimated to reach the situation similar to undisturbed primary forest in 56 years after logging, but on the basis of basal area of Dipterocarpaceae such condition could be achieved in 172 years.The canopy has not fully recovered and the complete closure of gaps is estimated to take 53 years since the logging started. The canopy consisted of gap phase (24.6 %), building phase (19.7 %) and mature phase (55.7 %). During the period of 18 years the tree mortality was 25.57 % or the rate of 1.4 %/year.Euphorbiaceae experienced the highest mortality, particularly among the trees with diameters of 10-20 cm.Mortality decreased with the increase of diameters.During the same period 520 new trees of 16 species were recruited.The densities of 53 % of the species experienced changes of only one tree or no changes at all.Drastic increase in tree population occurred in light demanding species,such as Baccaurea kunstleri, Endospermum diadenum,Mallotus penangensis,Sapium baccatum and Macaranga diepenhorstii .

KEMITRAAN KONSERVASI PEMULIHAN EKOSISTEM SEBAGAI SOLUSI KONFLIK DI TAMAN NASIONAL GUNUNG HALIMUN SALAK Dadang Edi Rochaedi; Dolly Priatna; Sata Yoshida Srie Rahayu
Jurnal Penelitian Sosial dan Ekonomi Kehutanan Vol 18, No 3 (2021): Jurnal Penelitian Sosial dan Ekonomi Kehutanan
Publisher : Pusat Penelitian dan Pengembangan Sosial, Ekonomi, Kebijakan dan Perubahan Iklim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpsek.2021.18.3.171-184

The ecosystem restoration conservation partnership program is a new policy from the Ministry of Environment and Forestry which aims to reduce conflicts due to forest land use in conservation areas. Gunung Halimun Salak National Park (GHSNP) is one of the conservation areas facing tenure conflicts, particularly in the Gunung Botol Resort area, where there are people who have lived and cultivated the land for decades, long before the Decree of the Designation of the GHSNP was issued. In an effort to address tenurial conflicts in Malasari Village, which is one of the villages within the management area of Gunung Botol Resort, the community took the initiative to collaborate with the GHSNP manager through a scheme called ecosystem restoration conservation partnership. This study aims to formulate a strategy for developing an ecosystem restoration conservation partnership in GHSNP by using a qualitative approach which is presented in a descriptive form. Data were analyzed using SWOT (Strengths, Weaknesses, Opportunities, and Threats) technique. The results of the study indicate that the ecosystem restoration conservation partnership program is recommended to be implemented by utilizing existing strengths and opportunities, as well as developed through synergy and collaboration that involves multi-stakeholders.

An evaluation of a community-based forest restoration programme in Gunung Gede Pangrango National Park, West Java, Indonesia Tintin Retno Pramesti; Rita Retnowati; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 1, No 2 (2020): Volume 1 Number 2 October 2020
Publisher : Universitas Pakuan

Forest restoration is needed to improve the condition of degraded ecosystems and boost up the ecological services. The existence of forest areas, especially in Indonesia, cannot be separated from the livelihoods of the people living around them. The purpose of this study was to evaluate whether the feasabiluty of the community-based forest restoration programme, implemented by the Gunung Gede Pangrango National Park Agency (BBGGPNP) and its partners, is feasible and can support efforts to restore forest ecosystem functioning and build community independence in managing the forest ecosystem. This study used the Context, Input, Process and Product (CIPP) method. This is an evaluation model which provides an analytical and rational basis for programme decision-making, based on a cycle of planning, structuring, implementing and reviewing and revising decisions, examined through a different aspect of evaluation –context, input, process and product evaluation. Data were obtained from field observations, interviews and document analysis. Aspects of the programme ‘Context’ were found to be categorized as good and can become the basis for programme implementation, Programme ‘Inputs’ were also determined to be good, and fulfilled the criteria required to support the achievement of programme objectives. The ‘Process’ aspects were found to be sufficient, with key areas for improvement included the need for better coordination with partners and the need to respond to technical restoration requirements by adjusting the area of land to be restored, the number of trees to be planted, and by considering the technical rule of restoration. The ‘Product’ aspect of the programme were shown to be good, is shown by the achievement of the target amount and growth of trees and the increased capacity of human resources as well as the development of independent businesses in the ex-encroachers who were the programme participants. Based on these results, it can be concluded that the community-based forest restoration programme such as conducted by the GGPNP Agency is feasible and can be implemented in similar sites.Restorasi hutan diperlukan untuk memperbaiki fungsi ekosistem hutan yang terdegradasi. Keberadaan kawasan hutan, khususnya di Indonesia, tidak dapat dipisahkan dengan penghidupan masyarakat yang tinggal di sekitarnya. Tujuan dari penelitian ini adalah untuk mengevaluasi apakah program restorasi hutan berbasis pemberdayaan masyarakat yang dilaksanakan oleh Balai Besar Taman Nasional Gunung Gede Pangrango (BBTNGGP) bersama mitranya, layak serta dapat mendukung upaya pemulihan ekosistem dan membangun kemandirian masyarakat. Penelitian ini menggunakan metode CIPP, yaitu model evaluasi pada aspek Context, Input, Process dan Product. Data diperoleh dari hasil observasi lapangan, wawancara dan analisa dokumen. Berdasarkan analisis data, dapat disimpulkan bahwa program restorasi hutan berbasis pemberdayaan masyarakat layak untuk diterapkan sebagai upaya memulihkan ekosistem dan membangun kemandirian masyarakat di sekitar hutan. Aspek Konteks program berkategori baik dan dapat menjadi dasar utama pelaksanaan program, Aspek Input program baik, telah memenuhi kriteria yang mendukung tercapainya tujuan program, Aspek Proses berkategori cukup, perlu melakukan koordinasi yang lebih baik dengan pihak mitra untuk lebih berkomitmen dan perlu untuk melakukan penyesuaian antara target luasan lahan yang direstorasi dengan jumlah pohon yang ditanam dengan mempertimbangkan aturan teknis restorasi. Aspek Produk berkategori baik ditunjukkan dengan tercapainya target jumlah dan pertumbuhan pohon dan meningkatnya kapasitas SDM serta terbangunnya usaha mandiri pada masyarakat eks perambah yang menjadi peserta program.

Carrying capacity analysis of nature tourism at Selabintana, Gunung Gede Pangrango National Park, West Java Andriyatno Sofiyudin; Rosadi Rosadi; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 2, No 2 (2021): Volume 2 Number 2 October 2021
Publisher : Universitas Pakuan

Selabintana management area is one of the nature tourism areas in the Gunung Gede Pangrango National Park (GGPNP) which located in Sukabumi District, West Java. Within the management area which covers 2,547.93 ha, there is a camping ground and waterfall which both are the most attracted for visitors. Efforts are needed to harmonize nature tourism activities with conservation mission, so that visitors can enjoy but the natural environment is maintained. The objective of this research is to determine the carrying capacity for daily tourism and camping activities by considering the aspect of physical, environmental and management aspects. The survey conducted through interviews and questionnaires to 62 tourists, traders and managers of the national park area. The data were analyzed using the carrying capacity assessment method developed by Cifuentes, i.e. calculating the Physical Carrying Capacity (PCC), Real Carrying Capacity (RCC), and Effective Carrying Capacity (ECC). As a result, EEC for daily tourism is 84 visitors/day (PCC RCC ECC with a score of 3,269 98 84), while EEC for camping is 60 visitors/day (PCC RCC with a score of 2,155 69 60). Thus, carrying capacity of nature tourism activities in conservation areas can be calculated based on physical carrying capacity, real carrying capacity, and effective carrying capacity.Kawasan pengelolaan Selabintana merupakan salah satu areal wisata alam yang ada di Taman Nasional Gunung Gede Pangrango (TNGGP) yang terletak di Kabupaten Sukabumi, Jawa Barat. Di dalam areal pengelolaan yang luasnya 2.547,93 ha terdapat camping ground dan air terjun yang merupakan daya tarik utama yang bagi para pengunjung. Diperlukan adanya upaya untuk menyelarasakan kegiatan wisata alam dengan misi konservasi, agar pengunjung dapat menikmati namun lingkungan alam tetap terjaga. Tujuan dari penelitian ini adalah menentukan carrying capacity untuk kegiatan wisata harian dan berkemah dengan mempertimbangkan aspek fisik, lingkungan dan manajemen. Survey dilakukan melalui interview dan kuisioner terhadap 62 wisatawan, pedagang dan pengelola kawasan taman nasional. Data dianalisis dengan metode penilaian carrying capacity yang dikembangkan oleh Cifuentes, yaitu menghitung Daya Dukung Fisik (PCC), Daya Dukung Ril (RCC), serta Daya Dukung Efektif (ECC). Sebagai hasil, EEC untuk wisata harian adalah 84 pengunjung/hari (PCC RCC ECC dengan skor 3.269 98 84), sedangkan EEC untuk berkemah adalah 60 pengunjung/hari (PCC RCC dengan skor 2.155 69 60). Jadi, carrying capacity dalam kegiatan wisata alam di dalam kawasan konservasi dapat ditentukan berdasarkan daya dukung fisik, daya dukung riil, dan daya dukung efektif.

Seed briquette composition for the direct seeding of Gmelina Gmelina arborea Roxb. Andreas Therapy; Dolly Priatna; Dede Jajat Sudrajat
Indonesian Journal of Applied Environmental Studies Vol 1, No 1 (2020): Volume 1 Number 1 April 2020
Publisher : Universitas Pakuan

The study of the effect of briquette composition on the seedling survival and growth of Gmelina in the field with the Randomized Group Design (RGD) experimental method. The parameters observed in the seed briquette composition test in the field were seedling diameter, seedling height and life percentage. The data were analyzed by Analysis of Variance (ANOVA) and Duncan's Test using SAS and SPSS programmes to determine the success of the seed briquette composition test. The composition of seed briquette has a significant effect on the survival percentage and growth of direct seeding Gmelina in the field. The application of the composition of B-5 with land preparation in the form of cleaning gives the best percentage of life and growth of Gmelina seedlings. This composition also gave a high growth of 45.29 cm, a diameter of 5.16 cm and a percentage of life of 58.33%. The composition of the B-5 seed briquettes has a proportional composition of the main ingredients in the form of soil and compost which is 20% and 40% as a growing medium and a source of nutrition for Gmelina seedling growth.Penelitian tentang pengaruh komposisi briket terhadap persen hidup serta pertumbuhan Gmelina di lapangan dengan metode eksperimen Rancangan Acak Kelompok (RAK). Parameter yang diamati pada uji komposisi briket benih di lapangan adalah diameter semai, tinggi semai dan persentase hidup. Data dianalisis dengan Analisis Ragam dan Uji Duncan dengan menggunakan program SAS dan SPSS untuk mengetahui keberhasilan dari uji komposisi briket benih. Komposisi briket benih berpengaruh nyata terhadap persentase hidup dan pertumbuhan direct seeding Gmelina di lapangan. Penerapan komposisi B-5 dengan persiapan lahan berupa pembersihan memberikan persentase hidup dan pertumbuhan semai Gmelina terbaik. Komposisi ini juga memberikan pertumbuhan tinggi sebesar 45,29 cm, diameter sebesar 5,16 cm dan persen hidup sebesar 58,33%. Komposisi briket benih B-5 memiliki komposisi bahan utama berupa tanah dan kompos yang proporsional yaitu sebesar 20% dan 40% sebagai media tanam dan sumber nutrisi untuk pertumbuhan semai Gmelina.

Co-Authors Adi Susilo Adi Susilo Agus Priyono Kartono Ahmad Yanuar Ammy Nurwati Andreas Therapy Andriyatno Sofiyudin Annis Rachmawati Aris Hidayat Aris Munandar Asep Sadili Budi Saputro Christine A. Maggs Dadang Edi Rochaedi David Harries Dede Jajat Sudrajat Denny Endang Sukara Hartiningtias, Diny Hasan Maulana Herman Suparman Simanjuntak Ismayadi Samsoedin Ismayadi Samsoedin Ismayadi Samsoedin Kathryn A. Monk Kathryn A. Monk Kathryn Anne Monk Kuswata - Kartawinata Kuswata - Kartawinata, Kuswata - LILIK BUDIPRASETYO Monk, Kathryn A Muhamad Hasan N. M. Heriyanto Naori Miyazawa Nur M HERIYANTO Nur Muhammad Heriyanto Pahlevi, Farhan Reza Pitra Panderi Purity Sabila Ajiningrum Rita Retnowati Robithotul Huda Rochadi - Abdulhadi Rochadi - Abdulhadi, Rochadi - Rosadi Rosadi Rosadi Rosadi Sata Yoshida Srie Rahayu SATA YOSHIDA SRIE RAHAYU Shujaul Mulk Khan Sri Wahyuni Sri Wahyuni Suci Adinda Rahmadia Suryanto Suryanto Suryanto Suryanto Sutanto Sutanto Tintin Retno Pramesti Wahju Widodo Wardana, Deni Sri Y. Purwanto YANTO SANTOSA Yossa Istiadi Yossa Istiadi Yuswandi Yuswandi

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