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All Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) ULIN: Jurnal Hutan Tropis Jurnal Agriment Agrifarm ABDIKU : Jurnal Pengabdian Masyarakat Universitas Mulawarman

Wahjuni Hartati

Fakultas Kehutanan Universitas Mulawarman

Author-ID : 2624133

Agriculture, Biological Sciences & Forestry Humanities Earth & Planetary Sciences Education Environmental Science Other

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PERTUMBUHAN TANAMAN SENGON BUTO (Enterolobium cyclocrpum Griseb) FASE TINGKATAN SEMAI DENGAN MEDIA OVERBURDEN Sukariyan Sukariyan; Marjenah Marjenah; Wawan Kustaiwan; Wahjuni Hartati; Garini Widosari
JURNAL AGRIMENT Vol 6 No 1 (2021): Juni 2021
Publisher : Politeknik Pertanian Negeri Samarinda

Plant growth is known as increasing volume of the diameter and height of the plant stem. Overburdenmaterial after coal mining has conditions where the soil structure is damaged, rock fragmentation ismixed and there is no layer of organic matter. The research objective is to determine the suitability ofplant growth in several growing media. The research method is done by planting test in a nursery withplant growth media consisting of top soil material as a control, a mixing of overburden material withfoliar fertilizer from sengon buto plants, and overburden growing media, the three media werecompared. Results of significance were less than 0.05. The growth medium affects the growth ofsengon buto (Enterolobium cyclocarpum Griseb) seedlings.

Estimasi Cadangan Karbon Pada Tumbuhan Bawah dan Serasah Di Hutan Pendidikan dan Penelitian Fakultas Kehutanan Universitas Mulawarman Samarinda Wahjuni Hartati; Ali Suhardiman; Triyono Sudarmadji; Eko Adi Sulistiyo
ULIN: Jurnal Hutan Tropis Vol 5, No 2 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Three slopes of 100 m long are defined in young secondary forest with gentle and slightly steep slopes. In each part of the slope, we built 1 (one) PUP of 20m x 20m which is consisted of 3 (three) Sub PUPs of 10m x 10m to represent the density of sparse, medium, and dense understorey and 1m x 1m of sub-PUPs for litter harvesting. In 18 (eighteen) PUPs, each 54 (fifty-four) Sub PUPs and Sub sub PUPs, were made in this study. The HPFU area is dominated by young secondary forest coverage with gentle and slightly steep slopes. The C reserves of the herbaceous understorey are more significant than that of woody plants. C reserves of all components studied in the gently sloping area are larger than the steep ones. The largest C reserves are found in leaf litter for all slope positions except for a slightly steep lower slope. The largest C reserves is found in finer litter. The total C reserves of understorey and young secondary forest organic litter in HPFU 933.4 tons and 95.9 percent are stored in a litter.

BIOCHAR YANG DIPRODUKSI DENGAN TUNGKU DRUM TERTUTUP RETORT MEMBERIKAN PERTUMBUHAN TANAMAN YANG LEBIH TINGGI (BIOCHAR PRODUCED BY RETORT CLOSED DRUM KILN PROMOTES HIGHER PLANT GROWTH RATE) Syahrinudin Syahrinudin; Arya Wijaya; Tunggul Butarbutar; Wahjuni Hartati; Ibrahim Ibrahim; Maurit Sipayung
ULIN: Jurnal Hutan Tropis Vol 2, No 1 (2018)
Publisher : Fakultas Kehutanan Universitas Mulawarman

ABSTRACTInterests on biochar application for the improvement of soil properties and fertily are increasing worldwide nowadays and numerous of production techniques are now available. This research was aimed at the investigation (a) on the characteristics biochar produced by 3 (three) different techniques, i.e: (1) traditional soil pit, (2) retort closed drum and (3) open drum kilns, as well as (b) on growth (height, leaf number and survival) response of Shorea leprosula seedling to 20%v biochar application on bioassay trial in the nursery. Bioassay trial was carried out in nursery of Forestry Faculty of Mulawarman University, Samarinda, Indonesia and was in accordance with Completely Randomized Design (CRD) applying 4 treatments and 3 replications.Of those 3 production techniques, retort closed drum kiln production technique was the most promising for further development and adoption providing not only that the biochar produced gave better properties and soil improvement capacity but also higher production recovery and less time and labour involvement. Furthermore, eventhough it was not statistically significant, biochar produced by retort closed drum gave better growth (height and leaf number) rate to S. leprosula seedlings in bioassay trial compared to those given by biochar produced by other techniques and without biochar treatments.

Relationship between Age and Standing Diameter of Eucalyptus pellita F. Muell Clone A in Industrial Plantation Forest Sebulu Kutai Kartanegara District, East Kalimantan Province: Hubungan Umur dengan Diameter Tegakan Eucalyptus pellita F. Muell Klon A di Hutan Tanaman Industri Kecamatan Sebulu Kutai Kartanegara Provinsi Kalimantan Timur noor jannah; Marjenah; Wahjuni Hartati; Ria Rachel Paranoan
Agrifarm : Jurnal Ilmu Pertanian Vol 9 No 1 (2020): July
Publisher : Universitas Widya Gama Mahakam

Forestry development which is oriented towards meeting the raw materials of the forestry industry is one of them with industrial plantations. The types developed are adapted to the needs of the industry and which have high economic value. Eucalyptus pellita F. Muell is one of the fast growing species that is very important for the pulp and paper industry. The advantages of this Eucalyptus as a fast growing plant are short rotation, few disease attacks, many benefits, and high economic value. One of the parameters of vegetative growth is the diameter, which in this case is measured by different stand age classes. So the research aims to determine the effect of age on the distribution of diameters and suspect of relationship patterns. The plant material is derived from clones, namely Clone A which is the result of selection from progeny test which will produce selected clones based on specified criteria and one of them is Clone A which is now a commercial clone since 2012. Propagation through vegetative tissue culture (as mother plant) which is then made shoot cuttings in the stool plant. The study was conducted in HTI PT Surya Hutani Jaya (PT SRH) Sebulu District, Kutai Kartanegara Regency, East Kalimantan Province by determining the research plots by purposive sampling with RAK and 3 replications. Furthermore, doing a diameter census (DSD) and numbering of all tree compilers stands in a circular research plot with an area of 0.05 ha, circle radius 12.6 m on stands aged 6 months (0.5 years), 2, 4 and 5 years. The results obtained from this study which are based on the analysis of variance (ANOVA) shows that stand age has a very significant effect on the distribution of diameters, where the results of the BNT 5% test indicate that among the average diameters per age class (6 months, 2, 4 and 5 years) show significantly different from each other. The linear regression relationship between age and diameter distribution of the average stand formed with the equation formed was: Y = 3.96 + 2.2777X, with values R2 = 0.9730 and r = 0.9864.

Keterpulihan ekosistem lahan pasca tambang batubara tertinggal jauh di belakang keberhasilan rehabilitasi lahan Triyono Sudarmadji; Wahjuni Hartati
ULIN: Jurnal Hutan Tropis Vol 7, No 1 (2023)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v7i1.8377

Penambangan batubara di kawasan hutan menimbulkan kerusakan ekosistem yang sangat signifikan sehingga harus segera dilakukan tindakan rehabilitasi lahan pasca tambang. Upaya pemulihan ekosistem pasca tambang harus dievaluasi guna mengetahui tingkat dan status keberhasilan serta potensi keterpulihannya. Penilaian keberhasilan reklamasi hutan pada areal Izin Pinjam Pakai Kawasan Hutan - IPPKH (sekarang disebut Persetujuan Penggunaan Kawasan Hutan - PPKH) pada konsesi PT Santan Batubara di Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur dilaksanakan di 6 (enam) lokasi yaitu OPDM2 (4,2 Ha), IPDF1 (6,7 Ha), IPDC1 Komodo (0,9 Ha), IPDC2 Komodo (1,8 Ha), IPDB Komodo (3,3 Ha) dan IPDCM1 (6,2 Ha) dengan total luasan 23,10 Ha. Skor hasil penilaian keberhasilan rehabilitasi lahan adalah 87,0 yang meliputi penataan lahan (27,0), pengendalian erosi- sedimentasi (16,0), serta revegetasi hutan (44,0). Skor karakteristik ekosistem dengan penciri utama terbentuknya kembali matarantai ekosistem hutan berdasarkan keberadaan herbivora - predator - karnivora dan tanpa kehadiran karnivora puncak yang menunjukkan satus dan nilai ekosistemnya adalah 70. Nilai ini bermakna bahwa harkat pemulihan ekosistem dengan status prospektif, yang mengindikasikan bahwa proses-proses dan tahapan pemulihan ekosistem hutan telah mengarah pada keterpulihan yang diharapkan yaitu kondisi rona awal sebelum adanya kegiatan penambangan batubara.

Pemecahan dormansi benih kemenyan (Styrax sumatranus J.J. SM) dengan perlakuan perendaman dan pemeraman Marjenah, Marjenah; Kiswanto, Kiswanto; Simanjuntak, Janri; Hartati, Wahjuni; Syahrinudin, Syahrinudin
ULIN: Jurnal Hutan Tropis Vol 8, No 2 (2024)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v8i2.14860

Kemenyan (Styrax sumatranus J.J. Sm) termasuk salah satu jenis tumbuhan penghasil resin. Getah kemenyan merupakan komoditi khas Sumatra Utara yang bernilai ekonomi tinggi. Tujuan penelitian ini untuk mengetahui pengaruh variasi perendaman dan pemeraman perkecambahan benih terhadap persentase kecambah, daya kecambah, dan laju perkecambahan kemenyan (Styrax sumatranus J.J. Sm). Penelitian ini menggunakan pola Rancangan Acak Lengkap Faktorial dengan perlakuan perendaman (A) yang terdiri dari 4 level yaitu A0 (tidak direndam) A1 (direndam dalam air mengalir), A2 (direndam dalam air kelapa), A3 (direndam dalam air biasa) dan perlakuan pemeraman (B) yang terdiri dari 4 kategori yaitu B0 (tidak diperam), B1 (diperam 1 hari), B2 (diperam 2 hari), B3 (diperam 3 hari). Dua faktor tersebut dikombinasikan sehingga terdapat 16 kombinasi perlakuan dan 3 kali ulangan untuk setiap kombinasi perlakuan. Hasil penelitian menunjukkan bahwa ada pengaruh antara kombinasi pemeraman dan perendaman terhadap benih kemenyan (Styrax sumatranus J.J. Sm). Benih kemenyan yang direndam dengan air kelapa serta lamanya pemeraman, memberikan pengaruh terhadap beberapa parameter yaitu persentase hidup kecambah sebesar 67%, rataan daya kecambah sebesar 75%, rata-rata hari berkecambah yaitu 82 hari.

Biochar and liquid fertilizer differently affect bulk density of Spodosols and Ultisols Hartati, Wahjuni; Sherlyani, Stella; Syahrinudin, Syahrinudin; Sudarmadji, Triyono
ULIN: Jurnal Hutan Tropis Vol 9, No 1 (2025)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v9i1.16916

Ultisols and Spodosols are soils with contrasting properties - Ultisols are clay-rich while Spodosols are sand-dominated. Soil bulk density, which can limit fertility, is an important property needing improvement in these degraded soils. This study aimed to determine how applying biochar combined with liquid fertilizer affects the bulk density of these soils. The research design was a Randomized Complete Block Design (RCBD) with biochar application set as the research factor and length of biochar soaking in liquid organic fertilizer (LOF) set as the research block. Bulk density sampling occurred at three moisture levels - mornings, afternoons, and evenings after watering. Overall, the two soil types responded differently to biochar treatment. Immersion duration and moisture level at sampling did not significantly impact bulk density

The Urban Forests Affecting the Environmental Parameters in Makassar City, Indonesia Mukrimin; Hasanuddin, Hasanuddin; Sultan, Sultan; Pratiwi, Asti; Hartati, Wahjuni
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 15 No 2 (2025): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.15.2.335

The urban forests in every city are very important to creating comfortable urban conditions for the community. The existence of urban forests, such as city parks, urban forests, and fields, can provide a sense of comfort to the community both thermally and visually. In addition, urban forests also act as microclimate ameliorators and noise reducers. The importance of this research is that it is expected to provide additional information and reference materials to identify the factors that contribute to thermal comfort in green open spaces in Makassar City. This study aims to analyze the thermal comfort of some green open spaces in Makassar City. The methodology of this research involves a field survey that measures climate factors such as temperature, humidity, sunlight intensity, noise, and wind speed. Thus, it can be concluded that if increasing the urban forest area in urban areas will have a positive impact on comfort, improve air quality, water, soil, and biodiversity, as well as enhance public health and welfare. Enhancing urban forests requires an approach that involves good urban planning, supportive policies, community participation, and the adoption of green technologies across the board, particularly in Makassar City.

Aplikasi teknologi pembuatan pembenah tanah dari limbah penyulingan sereh (Cymbopogon citratus) Wahjuni Hartati; Triyono Sudarmadji; Syahrinudin; Muhammad Oky Pratama Septiaji Putra
ABDIKU: Jurnal Pengabdian Masyarakat Universitas Mulawarman Vol. 1 No. 1 (2022): ABDIKU : Jurnal Pengabdian Masyarakat Universitas Mulawarman
Publisher : Fakultas Kehutanan dan Lingkungan Tropis, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/abdiku.v1i1.14

The purpose of the activity is to motivate and equip the community to utilize the solid waste of Cymbopogon citratus distillation of lemongrass as raw material for making soil improvers. The benefit of the activity in general is that it provides information on alternative sources of raw materials for making soil improver in handling degraded land in East Kalimantan which is quite extensive and provides alternative business opportunities for developing the soil improver manufacturing industry. The benefits of this activity in particular are to prevent soil quality degradation by returning organic matter in situ to the original environment. Activities are carried out offline/face to face with strict health protocols. The method used is counseling/discussion lectures followed by the practice of making bokashi soil improvers and POCs made from solid waste from citronella leaf oil distillation using EM-4 activator and tape yeast. The participants of the activity were 30 people consisting of 14 participants who were residents of RT 19, Mugirejo Samarinda Village, the rest were UNMUL Fahutan students who were carrying out activities in the village. Bokashi and POC were successfully harvested after 5 (five) days.

RUMPOS: Pembenah Tanah Alternatif Produk Teknik Konversi Sampah Organik Untuk Meningkatkan Performa Tanaman Budidaya Wahjuni Hartati; Syahrinudin Syahrinudin; Triyono Sudarmadji; Rahmad Hidayat
ABDIKU: Jurnal Pengabdian Masyarakat Universitas Mulawarman Vol. 2 No. 1 (2023): ABDIKU : Jurnal Pengabdian Masyarakat Universitas Mulawarman
Publisher : Fakultas Kehutanan dan Lingkungan Tropis, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/abdiku.v2i1.441

Various organic wastes from the agricultural industry are abundantly available, easily and cheaply to process into soil conditioner that can be applied to improve SOM content. RUMPOS is an organic soil conditioner produced from organic wastes by conversion techniques to improve the performance of cultivated plants. The aim of the activity is to introduce RUMPOS as an alternative soil conditioner in crop cultivation. Application of RUMPOS soil conditioner in the right way and dosage may give benefits in plant cultivation. This activity is expected to inspire the community on the utilization of organic wastes. One of the options is the conversion into soil conditioner, leading to the establishment of ameliorant manufacturing industry to supply the need for soil quality management East Kalimantan. Organic-based ameliorant application is an effective way to prevent the deterioration of soil quality and excessive use of inorganic fertilizers. This activity was carried out in collaboration with the Kelompok Wanita Tani Mekarsari, Mugirejo Village, Sungai Pinang, Samarinda, East Kalimantan, Indonesia. The method used is counseling consisting of presentation of material followed by planting practices and discussions. The result of this activity is in the form of additional knowledge on RUMPOS soil conditioner and its use in the cultivation of vegetables and spice crops. Most of the participants also felt inspired to carry out organic waste treatment activities independently into soil improvement in crop cultivation on their farmland

Co-Authors Ali Suhardiman Ananta, Dita Amelia Arya Wijaya Eko Adi Sulistiyo Garini Widosari Hasanuddin Hasanuddin Ibrahim Ibrahim Indriyanti, Gusti Larissa, Astrid Attha Marjenah Marjenah Marjenah, Marjenah Maula, Athiyatul Maurit Sipayung Muhammad Oky Pratama Septiaji Putra Mukrimin Noor Jannah Piri, Wandri L Pratiwi, Asti Rahayu, Indah Rahmad Hidayat Ria Rachel Paranoan RR. Ella Evrita Hestiandari Sherlyani, Stella Simanjuntak, Janri Sudarmadji, Triyono Sukariyan Sultan Sultan Syahrinudin, Syahrinudin Triyono Sudarmadji Triyono Sudarmadji Triyono Sudarmadji Tunggul Butarbutar Utomo, Faisal Prasetya Wawan Kustaiwan

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