Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

p-Index From 2021 - 2026

0.61

P-Index

This Author published in this journals

All Journal ULIN: Jurnal Hutan Tropis Jurnal Agriment Agrifarm

Wahjuni Hartati

Fakultas Kehutanan Universitas Mulawarman

Author-ID : 2624133

Agriculture, Biological Sciences & Forestry Environmental Science

Published : 5 Documents Claim Missing Document

Claim Missing Document

Articles

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.

Co-Authors Ali Suhardiman Arya Wijaya Eko Adi Sulistiyo Garini Widosari Ibrahim Ibrahim Marjenah Marjenah Maurit Sipayung Noor Jannah Ria Rachel Paranoan Sukariyan Syahrinudin Syahrinudin Triyono Sudarmadji Triyono Sudarmadji Tunggul Butarbutar Wawan Kustaiwan

Title

Found 5 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 5 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 5 Documents
Search