Article Per Year (5 Year)
p-Index From 2021 - 2026
3.51
P-Index
This Author published in this journals
All Journal HAYATI Journal of Biosciences MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI FORESTA Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman JURNAL PEMULIAAN TANAMAN HUTAN AGRIVITA, Journal of Agricultural Science Journal of Tropical Biodiversity and Biotechnology Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Teknik Mesin Indonesia JESBIO : Jurnal Edukasi dan Sains Biologi ALMUJTAMAE: Jurnal Pengabdian Masyarakat Jurnal Sylva Lestari Repong Damar: Jurnal Pengabdian Kehutanan dan Lingkungan Jurnal Pengabdian Pada Masyarakat Policy Brief Pertanian, Kelautan, dan Biosains Tropika Journal of Fisheries & Marine Annales Bogorienses Biodiversitas Journal of Biological Diversity
Ulfah Juniarti Siregar
Departemen Silvikultur, Fakultas Kehutanan, Institut Pertanian Bogor, Jl. Raya Darmaga, Kampus IPB Darmaga Bogor 16680
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

Published : 50 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 50 Documents
Search

 1   2   3   4   5 
GROWTH OF FOUR TREE SPECIES ON MEDIA CONTAINING GOLD MINE TAILING OF PT ANTAM UBPE PONGKOR Ulfah Juniarti Siregar; Roisatuz Zakiyah
Jurnal Silvikultur Tropika Vol. 7 No. 3 (2016): Jurnal Silvikultur Tropika (Suplemen Desember)
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.7.3.S72-S76

Abstract

PT Antam UBPE Pongkor is a gold mining company that produces waste in the from of tailing mud which contains heavy metal with sufficiently high concentration. The aim of this research was to study the growth of four types of plant, i.e. Casuarina junghuniana, Pinus merkusii, Melia azedarach, and Gmelina arborea in a media containing tailing mud. This research used a completely randomized factorial design with two factors, i.e. types of plant and media. Two kinds of media was used i.e. 1200g tailing and a mixture of 900g tailing and 300g compost. Growth parameters observed were plant diameter, height, number of leaf, leaf lenght and widht, total wet and dry biomass, root-shoot-ratio and number of stomata. Soil and plant analysis was done after four months of experiment. The results showed that plant types have significant effects on all parameters except root-shoot-ratio and plant height. Media types significantly affect plant diameter, wet and dry biomass. Interaction between plant types and media gave sifnificant effect on diameter, wet and dry biomass. G. arborea had the best growth response on all parameters except root-shoot-ratio and plant heigh. Its average diameter was 4.56 mm, leaf lenght 3.67 cm, leaf widht 3.000 cm, total wet biomass 50.21 g, total dry biomass 32.19 g and number of stomata is 89.Key words: C. junghuniana, G. arborea, metal, M. azedarach, tailing, P. merkusii.
KARAKTERISASI MORFOLOGI SENGON (Paraserianthes falcataria L. Nielsen) HASIL MUTASI RADIASI SINAR GAMMA Morphological Characterization of Sengon (Paraserianthes falcataria L. Nielsen) Gamma Radiation Mutation Results Roisatuz Zakiyah; Ulfah Juniarti Siregar; N. Sri Hartati
Jurnal Silvikultur Tropika Vol. 8 No. 1 (2017): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.8.1.41-47

Abstract

Mutation is a process of change in genetic structure of particular organisme. Genetic changes due to mutation can produce new characteristic and increase genetic diversity, which will be utilized for improvement program. Several artificial mutation programs have proved to produce new superior individual. One common artificial mutation used is gamma radiation. This study aimed to characterize 9 years old gamma irradiated sengon trees, with doses 0, 5, 10, and 15 krad based on its morphological characters, wood density, resistant to diseases. The observed parameters were tree diameter, height, volume, clear bole height, stem straightness, permanent branch, number of branches, canopy length, wood density and resistance to gall rust disease. Average values of all parameters of mutant lines does not differ significantly from control trees, however some individuals have better morphological characters than others. Mutant lines with 5 krad dose have close association with permanent branch and stem straightness, 15 krad dose with volume, diameter, height and crown length, while 10 krad with number of branches. Average wood density of mutant lines did not differ significantly from control either, with highest value belonged to 10 krad dose. Selected superior tree candidates were individuals with number 5.07, K1, 15.27, and 15 NN.Key word: breeding, characterization, mutation, sengon.
Pengaruh Aktivitas Antropogenik terhadap Keragaman Genetik Rhizophora mucronata Lamk. di Hutan Mangrove Secanggang, Sumatera Utara (Effect of Anthropogenic Activities on Genetic Variation of Rhizophora mucronata Lamk. in Secanggang Mangrove Forest, North Mohammad Basyuni; Hamzah Hamzah; Suci Rahayu; Ulfah J. Siregar
FORESTA Vol 1, No 2 (2012): Indonesian Journal Of Forestry Volume 1 No. 2 (Juli 2012)
Publisher : FORESTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.07 KB)

Abstract

Deforestation and fragmentation of mangrove forests in Indonesia are widespread that resulted in losing biodiversity including genetic variation. Rhizophora mucronata Lamk. is a common mangrove species in Secanggang, Langkat, North Sumatra and have been degrading due to anthropogenic disturbance. The aim of this study is to determine the genetic variation in natural population of R. mucronata in Secanggang, North Sumatra using isozyme markers. From five enzymes systems used namely aspartate aminotransferase (AAT), alcohol dehydrogenase (ADH), esterase (EST), malate dehydrogenase (MDH), and peroksidase (PER); eleven loci was found and five polymorphic loci were detected.The estimate value of genetic variation parameters i.e. observed and expected heterozygosity, average alel per loci, and average polymorphic (95% criteria) were 0.1386, 0.1724, 1.5455, and 45.45 % respectively.The low genetic variation of R. mucronata found in this study suggested that genetic variation may be influenced by anthropogenic activities such as illegal logging, conversion into shrimp pond and agricultural farm.Keywords: Anthropogenic, genetic variation, isozyme, mangrove, Rhizophora mucronata
ADAPTABILITY OF WHITE JABON (Anthocephalus cadamba MIQ.) SEEDLING FROM 12 POPULATIONS TO DROUGHT AND WATERLOGGING Dede J. Sudrajat; Iskandar Z. Siregar; Nurul Khumaida; Ulfah J. Siregar; Irdika Mansur
AGRIVITA, Journal of Agricultural Science Vol 37, No 2 (2015): JUNE
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v37i2.455

Abstract

The study was carried out for investigation of the adaptability of white jabon seedlings from 12 populations to drought and water logging stresses in a controlled green house. The results showed that the adaptive responses of white jabon seedling to drought and waterlogging stresses were affected by genotype (population). The drought and waterlogging stresses significantly inhibited plant growth, biomass accumulation and allocation, leaf area, also decreased chlorophyll content, increased carotenoids contents, and accumulated free proline. Relative water content and specific leaf area tended to be higher in waterlogging and declined in drought stresses.  The result clearly indicated that white jabon seedlings were more adaptive to waterlogging than to drought stresses. Moreover, there were different responses to drought and waterlogging stresses between the twelve populations. Kampar, Gowa, Kuala Kencana and OKI populations exhibited higher growth performance and stress tolerance index to be adapted to waterlogging stress, while Gowa, Pomalaa and Kampar populations had relatively better growth performance in the drought stress.
SEBARAN MANGROVE SEBELUM TSUNAMI DAN SESUDAH TSUNAMI DI KECAMATAN KUTA RAJA KOTA BANDA ACEH Syifa Saputra; Sugianto Sugianto; Djufri Djufri
JESBIO : Jurnal Edukasi dan Sains Biologi Vol 5 No 1 (2016): Jurnal Edukasi dan Sains Biologi
Publisher : Program Studi Biologi Fakultas Keguruan dan Ilmu Pendidikan Universitas Almuslim

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.855 KB)

Abstract

Sebaran mangrove di Kecamatan Kuta Raja Kota Banda Aceh belum merata dikarenakan belum adanya perhatian khusus dari pemerintah dan stakeholder lainnya. Penelitian ini bertujuan untuk mengetahui sebaran mangrove di Kecamatan Kuta Raja Kota Banda Aceh. Metode dalam penelitian ini adalah deskriptif. Teknik pengolahan data dilakukan dengan survei dan observasi. Analisis data dijelaskan secara deskriptif. Hasil penelitian luas mangrove tahun 2004 sebelum tsunami 66,25 ha dan tahun 2015 setelah tsunami 47,9 Ha, mangrove yang ada di lokasi penelitian mengakibatkan penyusutan sebesar 18,6 Ha yang disebabkan oleh gelombang tsunami pada tahun 2004. Simpulan terdapat 18 jenis mangrove yang sudah dewasa dan tersebar di 3 titik lokasi penelitian yaitu Gampong Jawa, Gampong Pande dan Gampong Peulanggahan sedangkan mangrove yang paling dominan terdapat di Gampong Jawa. Kata kunci :  Manggrove, Tsunami, Banda Aceh
Aplikasi Isotop δ13C dan δ18O untuk Lacak Balak Kayu Jati (Tectona grandis Linn.f.) di Jawa Application of Isotopes δ13C and δ18O for Teak Wood (Tectona grandis Linn.f.) Timber Tracking in Java Agus Kholik; Djiono Djiono; Iskandar Z Siregar; Ulfah J Siregar; Lina Karlinasari; Tedi Yunanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 7, No 1 (2009): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (573.665 KB) | DOI: 10.51850/jitkt.v7i1.237

Abstract

Tracking the origin of Teak timber and its wood product is possible to be carried out using stable isotopes fingerprinting.  To enrich the available variation patterns, Teak woods samples were collected from nine Forest Management Units (FMUs) representing all provinces and Teak centres in Java.  Mills from all part of woods were mixed for analyses.  The mills were burned under vacuum in a reactor system at 1200oC for 2 h, the resulting clean CO2 was transferred to the mass spectrometer to determine its isotopic composition of δ13C and δ18O.  The generated data was then analysed using multivariate analysis.  The results showed that isotopes analysis grouped Teak populations in Java intoWest Java population and mixed Central-East Java population.  To consider wood as material for fingerprinting traded forest product, a refinement on method should be done.
The Effect of Liquid Organic Fertilizer “Bio Ferti” Application on the Growth Rate of Spirulina platensis by Using Haldane Model M Iqbal Maulana Ginting; Eko Agus Suyono; Mochammad Donny Koerniawan; Lucia Tri Suwanti; Ulfah Juniarti Siregar; Arief Budiman
Journal of Tropical Biodiversity and Biotechnology Vol 7, No 2 (2022): August
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtbb.68944

Abstract

This experimental research was performed to observe the influence of an agricultural liquid organic fertilizer called Bio Ferti on the growth and biomass of Spirulina platensis, aiming at replacing inorganic fertilizer with the liquid organic one. The cultivation of the microalgae was conducted over seven days at Nogotirto Algae Park. The liquid organic fertilizer, namely Bio Ferti, was obtained from the Faculty of Biology, Universitas Gadjah Mada, and prepared to have doses of 2, 4, 6, 8, and 10 mL. For comparison, an inorganic fertilizer with the same doses was also prepared. The variables to be observed were cell density, dry cell weight, and growth kinetics. The culture medium conditions observed were temperature, pH, and salinity (the optimum salinity was 20 ppt). The growth kinetic analysis was performed mathematically using numerical simulations using the Contois and the Haldane models. This research’s results showed that Bio Ferti affected the growth rate of Spirulina platensis. With a dose of 2 mL, it became the optimum medium which produced the highest density and dry weight of 1.78x106 cells/mL and 160 mg/mL, respectively. Meanwhile, the inorganic fertilizer with a dose of 10 mL produced the highest density and dry weight of 2,13x105 and 80 mg/mL, respectively. The temperature ranged from 28 to 31°C, while the pH ranged from 8.01 to 9.02 for each medium. The suitable model to describe the growth kinetics of Spirulina platensis was the Haldane model.
Effect of Endophytic Fungi on the Growth of Sengon (Falcataria moluccana) Yunik Istikorini; Ahmad Faqih; Noor Farikhah Haneda; Ulfah Juniarti Siregar; Dimas Andrianto
Jurnal Sylva Lestari Vol. 10 No. 3 (2022): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v10i3.550

Abstract

Endophytic fungi have been reported to promote plant growth and resistance to biotic and abiotic stresses. This study aimed to determine the effect of endophytic fungi application isolated from the sengon (Falcataria moluccana) seeds on the growth of sengon. The seed-borne endophytic fungi were applied when the session was three weeks old by sprinkling each suspension of endophytic fungi (103 to 106 spores/ml) on the soil around the plant roots. The experimental parameters evaluated were height, diameter, and total wet and dry weight. This study showed that endophytic fungi treatment has no significant effect on the stem diameter, total wet weight, and water content; but significantly affected the height and total dry weight. Cladophialophora sp. and Ascotricha sp. fungi increased the height growth of sengon, while Aspergillus sp. fungi increased the total dry weight against the control. Ochroconis sp. treatment was not significantly different from the control. The shoot-root ratio values range from 1.13-1.43, indicating that the seeds already have roots supporting plant growth. The Dickson quality index range from 0.65-1.03 suggested that the seedlings have good biomass distribution. Consequently, endophytic fungi have the potential to increase the growth of sengon seedlings. Keywords: endophytic fungi, Falcataria moluccana, seedling growth, sengon
Peningkatan Pengetahuan Masyarakat Desa Hutan Melalui Sosialisasi dan Pelatihan Hama Sengon di Desa Ngancar, Kabupaten Kediri Noor Farikhah Haneda; Bayu Winata; Esti Nurianti; Aditya Nugroho; Vilda Puji Dini Anita; Ulfah Juniarti Siregar
Repong Damar: Jurnal Pengabdian Kehutanan dan Lingkungan Vol 2, No 2 (2023): November
Publisher : Magister of Forestry,Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/rdj.v2i2.8112

Abstract

Penanaman sengon yang luas di Kediri, Jawa Timur menyebabkan meluasnya serangan hama, salah satunya adalah serangan hama penggerek batang boktor. Petani belum menemukan cara untuk mencegah dan menanggulangi serangan hama yang efektif. Hal tersebut dapat disebabkan karena kurangnya pengetahuan petani akan jenis-jenis hama dan cara pengendalian hama tanaman sengon. Tujuan dilakukannya sosialisasi yaitu untuk menambah wawasan masyarakat sehingga mereka dapat memilih teknik pengendalian hama sengon yang tepat. Kegiatan sosialisasi dilaksanakan pada tanggal 14-15 Juni 2022. Kegiatan dilaksanakan di Desa Ngancar, Kabupaten Kediri, Jawa Timur. Peserta sosialisasi dan pelatihan berjumlah 20 orang, yang terdiri atas perwakilan Perum Perhutani selaku mitra program pengabdian, anggota Lembaga Masyarakat Desa Hutan (LMDH) binaan Resort Pemangkuan Hutan (RPH) Pandantoyo, serta perangkat Desa Ngancar. Hasil yang diperoleh yaitu 50 % peserta sosialisasi belum pernah mendapatkan penyuluhan pengenai hama tanaman sengon. Terdapat kenaikan persentase nilai pre-test ke post-test sebesar 12 %. Kegiatan sosialisasi mengenai hama tanaman sengon dapat menambah pengetahuan masyarakat.
The Activity of Mixed Microalgae Polysaccharides from Indonesia as Anti-Malaria in Vitro Mahendra Pujiyanto; Zhaza Afililla; Lilik Maslachah; Thomas Valentinus Widiyatno; Mochamad Donny Koerniawan; Eko Agus Suyono; Arief Budiman; Ulfah Juniarti Siregar; Lucia Tri Suwanti
Jurnal Ilmiah Perikanan dan Kelautan Vol. 14 No. 2 (2022): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v14i2.34766

Abstract

Highlight Research One of the content of microalgae that is beneficial for health is polysaccharides Polysaccharides of Indonesian microalgae can be promoted as anti-malarial Polysaccharides from Glagah, Spirulina and East Java microalgae inhibited the growth of plasmodium in vitro and had IC50 values of 3.18 µg/mL, 5.43µg/mL and 9.87 µg/mL, respectively   Abstract Malaria is an infectious disease caused by protozoan parasites of the genus Plasmodium that categorized as deadliest diseases in the world. Artemisinin and its derivatives are still recommended drugs for malaria therapy, however, there have been indications that Plasmodium parasites are resistant to this drug. Therefore, a study on polysaccharides from microalgae may be a potential as bioactive compound for anti-malaria. The aim of this study was to determine the effectiveness of the mixed microalgae polysaccharides as anti-malarial in vitro. Polysaccharides were extracted from three microalgae Spirulina sp., mixed microalgae Glagah and mixed microalgae East Java using the alkaline extraction method. The anti-malarial activity test refers to the concentration of polysaccharides used in calculating the IC50 value by probit analysis.  The concentration of polysaccharides of the three microalgae used were 0; 0.01; 0.01, 1, 10 and 100 µg/mL. The results showed that the IC50 values of polysaccharides of Glagah, Spirulina sp. and East Java microalgae were 3.18 µg/mL, 5.43µg/mL, and 9.87 µg/mL, respectively. In Conclusion, polysaccharides of Indonesian mixed microalgae can be promoted as anti-malarial.
Co-Authors Adam, Satria Adi Jaya, Adi Adisti Permatasari Putri Hartoyo ADITYA NUGROHO Aditya Nugroho Aditya Nugroho Agus Kholik Agus Setiyono Ahmad Faqih Andi Sukendro Anita, Vilda Puji Dini APRILIYA DAMAYANTI ARIEF BUDIMAN ARIEF BUDIMAN Arief Budiman Arief Budiman Arif Kurnia Wijayanto Ario Damar Aris Tjahjoleksono Aris Tjahjoleksono Bayu Winata Cartealy, Imam Civi Cecep Kusmana Chairil Anwar Siregar Chairil Anwar Siregar Chairil Anwar Siregar Dede J Sudrajat Dede J. Sudrajat Dede J. Sudrajat Dede Jajat Sudrajat Dede Jajat Sudrajat, Dede Jajat DEDE SUDRAJAT Deden D. Matra Deden Derajat Matra DEWI RAHMAWATI Diah Ratnadewi DIMAS ANDRIANTO DINY DINARTI DINY DINARTI Djiono Djiono Djufri Djufri Dodi Nandika Dodik Ridho Nurrochmat EKO AGUS SUYONO EKO AGUS SUYONO Eko Agus Suyono Eko Agus Suyono Elis Nina Herliyana Esti Nurianti Evy Damayanthi Farosandi, Naufal Hilmi Fifi Gus Dwiyanti FITRI INDRIANI Fitta Setiajiati Hamzah, Hamzah Hartati Hartati Hartati, N Sri Hasim HASYYATI SHABRINA Hasyyati Shabrina HENI PNY KOERNIAWAN Henti Rosdayanti Herman Daryono Herman Daryono I Made Mayun Maha Diputra I Wayan Windra Nugraha Ida Theilade Idha Susanti Idha Susanti Idha Susanti Idqan Fahmi INDIRA RIASTIWI IPB, DGB Irdika Mansur Iskandar Z Siregar Iskandar Z. Siregar Iskandar Z. Siregar ISKANDAR ZULKARNAEN SIREGAR Istikorini, Yunik Iswanto Jumadin Sidabutar Lala M Kolopaking Laura Flowrensia Lilik Budi Prasetyo Lilik Maslachah Lina Karlinasari LUCIA TRI SUWANTI Lucia Tri Suwanti Suwanti Lucia Tri Suwanti, Lucia Tri LUKMAN LUKMAN LUKMAN LUKMAN M Agus Setiadi M Iqbal Maulana Ginting M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Ma'mun Sarma Madani, Hilmi Naufal Mahendra Pujiyanto MAMAN TURJAMAN MAMAN TURJAMAN Matra, Deden Derajat MOCHAMAD DONNY KOERNIAWAN Mochamad Donny Koerniawan Mochammad Donny Koerniawan Mohammad Basyuni MUFASIRIN MUFASIRIN MULYANTO N. Sri Hartati Nahrowi NOFITA NUR CAHYANI Noor Farikhah Haneda Nurianti, Esti Nurul Khumaida Oemijati Rachmatsyah Oktariza, Wawan PRADHIPTA OKTAVIANTO Pramisari, Yunita Pramisasi, Yunita Prijanto Pamoengkas PURNAMA HIDAYAT Purwiyatno Hariyadi Puti Awali Saimima Ramadhan, Rafli Ranny Dwita Olivia Rifana, Haikal Zaky Rita Rahmawati Ritonga, Faujiah Nurhasanah Roisatuz Zakiyah Satriawan, Handi Sona Suhartana Sona Suhartana Sri Purwaningsih, Sri Sri Wilarso Budi Suci Rahayu SUDARSONO SUDARSONO SUDARSONO SUDARSONO Sudradjat Sugianto Sugianto Suharsono Suharsono Suharsono Suharsono Suharsono Suharsono Sumiati Supatmi Supatmi Supriyanto . Suria Darma Tarigan Syamsidah Rahmawati, Syamsidah Tedi Yunanto Tedi Yunanto UMI ZAKIYAH Utut Widyastuti Utut Widyastuti UTUT WIDYASTUTI Vilda Puji Dini Anita Widiyatno, Thomas Valentinus Wirrahma . WITJAKSONO WITJAKSONO Yosie Syadza Kusuma Zhaza Afililla ZHAZA AFILILLA Zidan, Mochammad ZULFAHMI ZULFAHMI