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Prof. Ali Munawar, Ph.D
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Soil Science Study Program, Faculty of Agriculture, Universitas Pembangunan Nasional Veteran Yogyakarta
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INDONESIA
Jurnal Tanah dan Air (Soil and Water Journal)
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 14115719     EISSN : 2655500X     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Physics
The scope of the journal includes soil physics and soil conservation, soil mineralogy, soil chemistry and soil fertility, soil biology, and soil biochemistry, soil genesis and classification, land survey and land evaluation, soil degradation, soil reclamation and remediation, organic and waste management, water management, water pollution, soil and water quality, agro-climatology, and related subjects in which using soil from tropical areas, forest soil, and Geographic Information System (GIS)
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Konservasi Alam dan Lahan
Articles 97 Documents
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PENGARUH PEMBERIAN CAMPURAN LIMBAH IKAN PADAT DAN PUPUK ORGANIK CAIR LIMBAH IKAN TERHADAP P LATOSOL DAN PERTUMBUHAN TANAMAN JAGUNG (Zea mays) Herasti, Widhi Sekar Ing Pramada; Julianto, Eko Amiadji
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13951

Abstract

Latosol is soil with low fertility and low available P content. Solid fish waste and liquid organic fertilizer based on fish waste have a relatively high content of P element and have the potential to increase the availability of  P in soil. The purpose of this study is to find out the effect of providing solid fish waste and liquid organic fertilizer of fish waste on Latosol’s Fosforus availability and corn plants growth. The experiments were conducted using a non-factorial Randomized Design (RAL) and consisted of 9 treatments: P0=Fish Waste 0 tons/ha + LOF 0 ml/l, P1= Fish Waste 0 tons/ha + LOF 6 ml/l, P2= Fish Waste) tons/ha + 10 ml/l P3= Fish Waste 5 tons/ha + LOF 0 ml/l, P4= Fish Waste 5 tons/ha + LOF 6 ml/l, P5= Fish Waste 5 tons/ha + LOF 11 ml/l, P6= Fish Waste 10 tons/ha + LOF  0 ml/l P7= Fish Waster 10 tons/ha + LOF 6 ml/l P8= Fish Waste 10 tons/ha + LOF 11 ml/l. The research parameters are pH, P-available, Al-dd, Retention P, Ca. Plant Height, Plant Wet Weight, and Plant Dry Weight. The results of the study showed the effect of administering compost fertilizer and liquid organic fish waste had a real effect in increasing pH of H2O, pH of KCl, available P, Ca availability, Plant Height, Wet Weight, Plant Dry Weight as well as lowering Al-dd and Ground Retention. The best dose of fertilizer is on P5. 
ALIH FUNGSI LAHAN SAWAH DI KECAMATAN PURWOREJO, KUTOARJO, DAN PURWODADI KABUPATEN PURWOREJO Hidayat, Nurul; Mulyanto, Djoko
Jurnal Ilmu Tanah dan Air Vol 21 No 1 (2024)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v21i1.13953

Abstract

Purworejo Regency is one of the districts in Central Java which has experienced conversion of rice fields. Purworejo Regency has an area of 1,034.82 km2. The study was conducted in 3 sub-districts, namely Purworejo District with an area of 52.72 km2, Kutoarjo with an area of 37.59 km2, and Purwodadi District with an area of 53.96 km2. The purpose of the study was to analyze the conversion of rice field land, the suitability of conversion to RTRW, and identify the impact of rice field conversion in Purworejo Regency. The study was conducted by survey method with purposive sampling points. Sample based on the suitability of conversion obtained from overlaying the rice field land conversion map with the RTRW map of Purworejo Regency 2011-2031. The suitability analysis of conversion is based on the land use balance with conformity classes appropriate and non-conforming. The results showed that the 3 sub-districts studied experienced conversion of paddy fields in 2013-2021. The conversion of paddy fields based on the RTRW of Purworejo Regency 2011-2031, Kutoarjo District covers an area of 4.31 ha with a suitability level of 10.07% and not according to 89.93%. In Purworejo sub-district covering an area of 25.38 ha with a suitability level of 26.04% and not according to 73.96%. Purwodadi sub-district covers an area of 12.68 ha with a suitability rate of 4.89% and not conformity of 95.11%. The conversion of paddy fields needs to be controlled so as not to disturb the stability of food security of an area.  
Assessment of Soil Chemical Fertility Status in Wukirsari Sub-District, Cangkringan, Sleman, Special Region of Yogyakarta : Kajian Status Kesuburan Kimia Tanah di Kalurahan Wukirsari, Kapanewon Cangkringan, Kabupaten Sleman, Daerah Istimewa Yogyakarta Fransisca, Ema; Amiadji Julianto, Eko
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15253

Abstract

Agricultural productivity is influenced by soil fertility, which depends on the nutrient content of the soil as well as the land use and management practices applied. The objective of this study is to identify the chemical properties of the soil, determine its chemical fertility status, and analyzed limiting factors. The research was conducted from December 2024 to February 2025 using survey methods and laboratory analysis according to the criteria of the Soil Research Center (1995). Representative sample points were determined by purposive method on the overlay results of thematic maps (Land Use Maps, Slope Maps, Elevation Maps) and resulted in 12 Land Units. The analysis results showed that the Cation Exchange Capacity (CEC) values range from 2,2 - 7,55 cmol (+)/kg classified as very low to low, Base Saturation (BS) ranges from 56,24 - 99,99% categorized as high to very high, P2O5 was 59,66 - 88,37 mg/100g classified as high to very high, K2O was 2,09 - 15,51 mg/100g categorized as very low to low, C-organic was 0,46 – 2,38% classified as low to moderate, and pH H2O was 4,83 – 7,7 indicating acidic to slightly alkaline conditions therefore the status of soil chemical fertility obtained 2 status, very low covering an area of 373,19 ha (39,42%) and low covering 600,09 ha (60,58%). The low fertility status is mainly influenced by the low Cation Exchange Capacity, content of K2O, and Organic Carbon.
Estimation of Potassium Content in Salak Plants Using Green Normalized Difference Vegetation Index Method in Wonokerto Village, Turi, Sleman, Yogyakarta: Estimasi Kandungan Kalium pada Tanaman Salak Menggunakan Metode Green Normalized Difference Vegetation Index di Kalurahan Wonokerto, Turi, Sleman, Yogyakarta Ramadhani Muhammad Yusuf Ardiansyah; Virgawati, Sari
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15258

Abstract

Salak (Salacca zalacca) is a major horticultural crop in Sleman Regency, Yogyakarta, yet recent years have seen a decline in its productivity, potentially due to potassium (K) deficiency. This study aims to estimate potassium content in Salak plant tissues using the Green Normalized Difference Vegetation Index (GNDVI) derived from Sentinel-2 satellite imagery and to evaluate the accuracy of this approach against laboratory-based measurements. The research was conducted in Wonokerto Village, Turi District, Sleman Regency, employing a quantitative descriptive method. A total of 30 sampling points were selected, comprising 20 prediction points and 10 reference points. GNDVI values were extracted through Sentinel-2 image processing using ArcGIS software, while potassium content in leaf tissue was determined via the wet digestion method using HNO₃ and HClO₄. Leaf samples were collected from the central part of the midrib, serving as a physiological indicator of plant nutrient status. Statistical analyses included Pearson’s correlation, linear regression, paired sample t-test, and Root Mean Square Error (RMSE) assessment. The findings revealed a correlation coefficient (r) of 0.604, indicating a strong positive relationship between GNDVI and potassium content. The regression analysis showed no significant difference between predicted and observed values, while the RMSE value of 0.19445 suggested a low prediction error. These results demonstrate that GNDVI has strong potential as a non-destructive, efficient, and cost-effective tool for estimating potassium levels in Salak plant tissues. The resulting prediction map can be applied to support more precise potassium fertilization strategies in Salak cultivation within the study area.
Characterization of Functional Groups in Sengon Biochar Under Various Pyrolysis Temperatures: Karakterisasi Gugus-Gugus Fungsional Biochar Sengon pada Perlakuan Berbagai Suhu Pirolisis NADA SALSABILA PRADHANI; DJOKO MULYANTO
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15260

Abstract

The decline in soil quality due to pollution and the depletion of nutrients can be addressed by using biochar as a soil conditioner. This study utilized sengon biochar pyrolyzed at temperatures of 300°C, 500°C, and 700°C to analyze differences in functional group characteristics and their ability to adsorb ions. The objective of this study was to identify the functional groups of biochar at various pyrolysis temperatures and to determine the optimal temperature for enhancing the soil's ion adsorption capacity. The methods employed included functional group characterization using FTIR and ion adsorption testing using gentian violet and eosin red dyes. The results showed that biochar at 300°C retained dominant hydroxyl (-OH) and carbonyl (C=O) functional groups. Biochar at 500°C exhibited increased aromatic structure with dominant aromatic C=C groups while still retaining hydroxyl groups. Biochar at a pyrolysis temperature of 700°C loses many functional groups and is dominated by aromatic carbon. The best ion adsorption capacity is found in biochar at 500°C, followed by biochar at 700°C, and finally biochar at 300°C. Keywords: Analysis, organic materials, adsorption, ion. Keywords: Analysis, Organic Matter, Adsorption, Ion
Ability of Sandy Soil to Retain Water in Various Coastal Sand Land Management Practices in Bugel Village, Kulon Progo Regency: Kemampuan Lahan Pasir Menahan Air pada Berbagai Praktik Pengelolaan Lahan di Desa Bugel Kabupaten Kulon Progo Tri Nursasomo, Muhammad; Nurcholis, Mohammad
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15262

Abstract

The reduction of agricultural land due to land conversion has compelled farmers to explore alternative cultivation areas such as coastal sandy soils, despite their limited water retention capacity. Agricultural land in Bugel Village, Kulon Progo Regency, is predominantly composed of sand and exhibits various land management practices. This study aims to analyze the influence of land management strategies on the water retention capacity of coastal sand soils and to identify related soil properties. Soil samples were collected through purposive sampling based on land use maps and direct observation, resulting in three sampling locations that represent different land management practices. Descriptive statistical methods were employed, and the data were analyzed using Analysis of Variance (ANOVA) followed by the Duncan Multiple Range Test (DMRT). The results showed a significant difference in permanent wilting point moisture content (P < 0.01), available moisture content (P < 0.05), and air-dried moisture content (P < 0.05). These findings underscore the importance of appropriate land management in enhancing the water-holding capacity of coastal sandy soils.
Soil Quality Along a Distances Gradient from Shorelines in Samas Coastal Sandy Land, Bantul, Yogyakarta: Kualitas Tanah pada Jarak Garis Pantai di Lahan Pertanian Pasir Pantai Samas, Bantul, Yogyakarta Sepia Intan Cahyani Putri, Theresia; Herlambang, Susila
Jurnal Ilmu Tanah dan Air Vol 22 No 1 (2025): June 2025
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v22i1.15272

Abstract

Samas coastal sandy land is characterized as a marginal agricultural area, approximately 4 km from the shoreline. This study was conducted with three primary objectives: to evaluate its soil characteristics, to calculate its soil quality index (SQI), and to examine the limiting factors for soil quality. This study used a purposive survey method, sampling points were selected at varying distances from the coastline. Soil quality parameters analyzed included root density, weight density, porosity, clay content, C-organic, total N, available N/P/K, pH, and microbial counts (CFU/g). Soil quality was evaluated based on the criteria by Mausbach & Seybold (1998) and scoring function from Karlen et al. (1996), both of which were adapted to local conditions. The results showed that the 1 km from the coastline had the highest sand content (62.041%) but the lowest microbial counts (670×10³ CFU/g), while soils 4 km inland showed the lowest sand content (19.819%) and highest C-organic (1.297%), total N (0.392%), C/N ratio (3.309), and microbial activity (1910×10³ CFU/g). Available N, P, and K were consistently high across all sites. The soil quality index (SQI) increased with distance from the coast, transitioning from "moderate" (SQI 0.472 at 1 km) to "good" (SQI 0.774 at 4 km). The limiting factors identified were porosity, non-capillary porosity (NPD), C-organic, and available N. These findings underscore the critical role of shoreline proximity in shaping soil quality gradients in Samas’ sandy coastal agroecosystems.

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