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INDONESIA
Jurnal Tanah dan Air
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
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Articles 115 Documents
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Comparative Chemical Properties Analysis of Nanobubble-Treated Gold Mine Tailings from Amalgamation and Cyanidation: Analisis Komparatif Sifat Kimia Tailing Tambang Emas Hasil Perlakuan Nanobubble dari Proses Amalgamasi dan Sianidasi Nur Adibah, Nailah; Nurcholis, Mohammad; Rhazista Noviardi, Raden
Jurnal Ilmu Tanah dan Air Vol 22 No 2 (2025): December 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i2.15488

Abstract

Tailings, the waste residue from gold mining processes, typically contain hazardous heavy metals that have the potential to contaminate the environment, particularly soil. This study aims to evaluate the changes in the chemical properties of gold mine tailings following nanobubble flotation treatment as an initial step toward sustainable remediation. Tailings samples were collected in a composite from two mining sites using different processing methods: cyanidation (GMBU Antam Pongkor, Bogor) and amalgamation (ASGM Kertajaya, Sukabumi). Nanobubble flotation was applied using combinations of reagents consisting of collectors (EDTA or NaOH), a frother (MIBC), and depressants (Na₂SiO₃ or Na₂CO₃). Parameters analyzed included pH (H₂O, KCl, H₂O₂), Cation Exchange Capacity (CEC), and exchangeable base cations (Ca, Mg, K, Na), measured using standard soil chemical methods. Comparative analysis was performed to assess changes in tailings chemistry before and after treatment. Results showed that nanobubble flotation slightly increased the pH of both tailings, indicating the neutralization of residual acidity. Varied CEC values depending on reagent composition, reflecting differences in the interaction between reagents and clay mineral surfaces. Base saturation in both sites remained low, suggesting that additional amelioration, such as gypsum or organic matter, is still required to improve cation balance. Nanobubble technology affected the tolerated tailings’ chemical properties for soil and plants and demonstrated potential as a preliminary step toward the reclamation and reutilization of gold mine tailings for future land use.
Aggregate Stability under Different Land Uses in Muntuk Village, Dlingo Subdistrict, Bantul Regency: Stabilitas Agregat pada Berbagai Penggunaan Lahan di Desa Muntuk, Kecamatan Dlingo, Kabupaten Bantul Inayah, Heni; Arbiwati, Dyah
Jurnal Ilmu Tanah dan Air Vol 22 No 2 (2025): December 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i2.15560

Abstract

Stable soil aggregates improve soil structure and create a suitable medium for plant growth. Meanwhile. unstable aggregates break down easily under rainfall and accelerate erosion. This study aims to determine soil aggregate stability and the factors that control it under different land uses. The research used a survey approach. A land system map was produced by overlaying land use, slope, and soil type, resulting in 40 land system units. Sampling points were selected purposively based on land system units, accessibility, and land area. A total of 21 samples were collected. Aggregate stability was measured using wet and dry sieving. Observed parameters included field soil structure, texture, organic carbon, equivalent lime, specific gravity, bulk density, and clay content. Pearson correlation was used to identify the relationship between each parameter and aggregate stability. The results showed that aggregate stability ranged from 29.51-61.67 (unstable-slightly stable) in forest land, 52.02-84.90 (slightly stable-very stable) in mixed gardens, 34.22-64.25 (unstable-slightly stable) in rainfed rice fields, and 22.67-60.29 (unstable-slightly stable) in drylands. Soil organic matter and the dispersion ratio (DR) were the main factors influencing aggregate stability in Muntuk Village. Improving stability requires soil and water conservation practices that protect aggregates from breakdown by water or external disturbance. Agricultural land generally had lower stability, so proper management is needed. Recommended practices include returning crop residues, applying organic amendments, adopting minimum tillage, and implementing suitable cropping patterns.
Estimation of Nitrogen Content Using Green Normalized Difference Vegetation Index (GNDVI) in Sugarcane: Estimasi Kandungan Nitrogen Menggunakan Metode Green Normalized Difference Vegetation Indeks (GNDVI) di Tanaman Tebu Daffa Dhiya Ulhaq; Sari Virgawati
Jurnal Ilmu Tanah dan Air Vol 22 No 2 (2025): December 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i2.15581

Abstract

Sugarcane is one of the most widely cultivated plantation crops in Indonesia, but production has declined, particularly in Kapanewon Sedayu, Bantul, due to a suspected nitrogen deficiency. Nitrogen is required for the formation of buds, leaves, and stems. GNDVI is a vegetation index that is more sensitive to chlorophyll content. This study aims to determine the correlation between GNDVI and the nitrogen content of sugarcane tissue based on drone imagery, to develop an estimation model, and to produce an N-content map. The research was conducted at the Gunung Ombo Plantation, Argomulyo, Sedayu, Bantul, Yogyakarta, using a quantitative descriptive method. Forty-five sample points were established (30 for prediction and 15 for reference). Leaf samples were collected from the third leaf sheath of 5-month-old sugarcane and analyzed for nitrogen content using the Kjeldahl method. The relationship between GNDVI and tissue nitrogen was examined using Pearson’s correlation, linear regression, and paired t-tests. Results showed a strong correlation (r = 0.896) with a coefficient of determination (R² = 0.7891) and the regression equation y = 4.7507x + 0.6012. The paired t-test indicated no significant difference between predicted and reference nitrogen values. The resulting estimation map can support nitrogen fertilization management in sugarcane cultivation in the study area.
Alluvial Soil Physical Properties in A Post-Earthquake Liquefaction Zone in Yogyakarta: Sifat Fisik Tanah Aluvial Pada Zona Likuifaksi Pasca Gempa Bumi Yogyakarta Karim, Rauf; Nurcholis, Muhammad
Jurnal Ilmu Tanah dan Air Vol 22 No 2 (2025): December 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i2.15591

Abstract

Liquefaction is a secondary impact of earthquakes that can cause severe land degradation, including damage to agricultural areas. Bantul Regency experienced liquefaction during the 2006 earthquake, making it prone to further liquefaction, especially in the Jetis subdistrict. This study investigates the physical characteristics of soils prone to liquefaction and examines the correlation between the soil maturity index and liquefaction potential. Sampling points were determined using purposive sampling. The liquefaction potential index value was calculated using qualitative geological techniques at depths of 0–300 cm, yielding values of 28.40 and 18.01 for perennial tree and seasonal crop areas, respectively. Soil samples were collected, and laboratory analyses, including soil particle size, texture, organic matter, maximum moisture content, electrical conductivity (EC), permeability, redox potential (Eh), and plasticity index, were conducted. The results show key characteristics supporting liquefaction potential, including a dominant sand fraction (79.15%), maximum moisture content (88.94%), moderately fast permeability, high EC (0.416 mS/cm), and Eh values indicating aerobic tendency. All soil samples were categorized as physically immature based on the soil maturity index, reflecting weak interparticle bonding and high dispersion when saturated. Regression analysis between the soil maturity index and median grain size (D50) revealed insignificant correlations, with R = -0.56 (R2 = 0.3161) and 0.38 (R2 = 0.145) for perennial and seasonal crop areas, respectively. Visually, quadratic regression yielded R² values of 0.4109 and 0.4226, suggesting a potential nonlinear pattern. These findings indicate that soil maturity index influences liquefaction propensity. Further research is necessary to understand other controlling variables.
Landfill Leachate as A Soil Conditioner: Effects on Latosol Properties and Spinach (Amaranthus viridis) Growth: Lindi Tempat Pemrosesan Akhir Sebagai Bahan Pembenah Tanah: Dampak Terhadap Sifat Kimia Latosol Dan Pertumbuhan Bayam (Amaranthus viridis) Lutfia Nur Indriyani; Peniwiratri, Lelanti
Jurnal Ilmu Tanah dan Air Vol 22 No 2 (2025): December 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i2.15723

Abstract

Leachate from the Jetis landfill in Purworejo Regency poses a risk of environmental pollution, but it also contains plant nutrients such as nitrogen, potassium, and organic matter. The purpose of this study is to ascertain how different Jetis landfill leachate concentrations affect the chemical characteristics of Latosol and assess how leachate application affects the spinach growth. A non-factorial totally randomized design was employed in this investigation with 6 treatments and 3 replicates. The treatments consisted of applying leachate at several concentrations, specifically 0% (L0), 20% (L1), 40% (L2), 60% (L3), 80% (L4), and 100% (L5). The soil was incubated with leachate for 30 days and then planted with spinach until the maximum vegetative phase. Data analysis was performed using 5% ANOVA followed by 5% DMRT test. The findings demonstrated that the application of leachate significantly raised the pH, CEC, plant height, number of leaves, wet weight, and dry weight of spinach plants. However, it had no discernible on organic-C, total-N, available-P, and available-K. The application of 20% leachate (L1) produced the highest values for plant height, number of leaves, wet weight, and dry weight of plants, which were significantly different from the control (L0). This Jetis landfill leachate is not yet effective as a fertilizer substitute, but it has the potential to be used as a soil conditioner.

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