Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal ULIN: Jurnal Hutan Tropis Jurnal Agriment
Sudarmadji, Triyono
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Environmental Science

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
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

Abstract

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
Evaluasi Tingkat Kekritisan Lahan di DAS Manggar Kota Balikpapan Rudiansyah, Muhammad; Sulistioadi, Yohanes Budi; Sudarmadji, Triyono
ULIN: Jurnal Hutan Tropis Vol 9, No 2 (2025)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v9i2.17260

Abstract

Tujuan dari penelitian ini adalah Menentukan tingkat kekritisan lahan DAS Manggar, Metode penelitian menggunakan Peta tutupan lahan dibuat dari hasil interpretasi citra satelit SPOT 6/7 dan citra Planet Sccope secara visual. Pengolahan data citra satelit SPOT-6/7 serta Planet Sccope Dari hasil evaluasi peta BPDASHL dapat dilihat bahwa pada DAS Manggar sebagian besar lahannya dalam kondisi agak kritis dengan luasan 5.704,58 ha atau 57,56%, diikuti oleh potensi kritis dengan luasan 2.140,87 ha atau 21,60%, tidak kritis seluas 1.900,49 ha atau 19,18% untuk lahan yang kondisinya kritis memiliki luasan 164,62 ha atau 1,66%. Sedangkan hasil dari penelitian yang di lakukan pada DAS Manggar sebagian besar lahannya dalam kondisi tidak kritis dengan luasan lahan sebesar 3.444,84 ha atau 34,76%, diikuti dengan kondisi lahan agak kritis dengan luasan 2.884,76 ha atau 29,11%, kemudian kondisi sangat kritis dengan luasan lahan 1.616,17 ha atau 16,31%, untuk kritis seluas 1.148,49 ha atau 11,59%, dan untuk lahan yang memiliki potensi kritis sebesar 816,30 ha atau 11,59%. Dari 9.910,56 hektar luasan total DAS Manggar, ada 3.164,32 hektar (31,93%) hasilnya sama dan ada 6.746,24 hektar (68,07%) hasilnya tidak sama.
Less Steep Slope Stored More Soil C than Those Steep Ones: A Case Study in HPFU Samarinda hartati, Wahjuni; Piri, Wandri L; Sudarmadji, Triyono; Syahrinudin, Syahrinudin
JURNAL AGRIMENT Vol. 9 No. 2 (2024): Desember 2024
Publisher : Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/jurnalagriment.v9i2.3193

Abstract

Global warming is a phenomenon of increasing global temperature of the earth from year to year due to the greenhouse effect that contains greenhouse gases (GHG) one of which is carbon dioxide (CO2), thereby increasing the absorption of heat released by the earth into the atmosphere, forests have a contribution as a provider of environmental services as an absorber of carbon dioxide (CO2). Hutan Pendidikan Fahutan Unmul (HPFU) is an area with forest status in Samarinda and is currently still dominated by land cover in the form of young secondary forest. this study was conducted to estimate the C reserves stored in the soil under the young secondary forest cover, determine its contribution to the total C reserves in the young secondary forest and estimate the potential of the total C reserves in the soil in HPFU. PUP is made measuring 20 m x 20 m on secondary forest cover with gentle slope (L2) to slightly steep (L3) at the top, middle, and bottom of the slope. In each slope do repetition as much as 3 times. In each PUP, a whole soil sample was taken using a sample ring and the soil was disturbed using a hoe at 3 depths,namely : 0-10 cm, 10-20 cm, and 20-30 cm. young secondary forest cover dominates the HPFU area on a gentle to rather steep slope. the C content of soil as deep as 30 cm in the sloping Slope area is 75.29 tons/ha with a total reserve of C is 5,499.80 tons and in a rather steep slope area is 54.69 tons/ha with a total reserve of C is 3,822. 83 tons
Co-Authors Muhammad Rudiansyah Piri, Wandri L Sherlyani, Stella Syahrinudin, Syahrinudin Wahjuni Hartati