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Acta Solum
Published by Universitas Lambung Mangkurat
ISSN : -     EISSN : 29875145     DOI : https://doi.org/10.20527/actasolum.v1i2
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Acta Solum is a journal that publishes authoritative and original refereed articles on topics relevant to soil science. Acta Solum encourages the exchange of information between environmental managers, pure and applied scientists, and national and international authorities on soil science.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Tanah
Articles 143 Documents
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Assessment of Soil Degradation under Different Land Uses and Conservation-Based Management in Banjar Subdistrict, Buleleng Regency Made Sri Sumarniasih; Cindy Anita Sitanggang; I Wayan Narka
Acta Solum Vol. 4 No. 3 (2026): July 2026
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v4i3.3714

Abstract

Land-use change and agricultural intensification in Banjar Subdistrict have the potential to degrade soil quality and disrupt biomass production. This study aimed to assess the potential, spatial distribution, and status of soil degradation under different land uses and to formulate conservation-based management strategies. The methods included field surveys, laboratory analyses, and spatial analysis using Geographic Information Systems (GIS) through overlay techniques of land use, soil type, slope, and rainfall maps. Soil samples were collected from 13 Homogeneous Land Units (HLUs) representing different land-use types and biophysical conditions. The results showed that moderate soil degradation potential dominated an area of 9,801.46 ha (85.55%), followed by high potential on steep slopes covering 1,026.02 ha (8.95%) and low potential in lowland areas covering 629.96 ha (5.50%). The soil degradation status was classified as light and distributed into three spatial units (R.I-p; R.I-p,f,a; R.I-p,v,a), with permeability, soil fraction, porosity, and pH as the main limiting factors. Recommended management practices include terracing, runoff control, cover cropping, organic matter application, crop rotation, and balanced fertilization.
Chemical Characteristics of Water Hyacinth Pellet Fertilizer with Different Adhesive Materials Nukhak Nufita Sari; Ronny Mulyawan; Irvan Indra Resnawan
Acta Solum Vol. 4 No. 3 (2026): July 2026
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v4i3.3724

Abstract

High application of inorganic fertilizers can negatively affect soil fertility and environmental sustainability. Organic farming uses organic materials to improve soil quality and support sustainable crop production. Water hyacinth (Eichhornia crassipes), an invasive aquatic weed, has potential as a raw material for pellet organic fertilizer. This study aimed to evaluate the chemical characteristics of water hyacinth pellet fertilizer using different adhesive materials in accordance with SNI 7763:2024 and to determine the most suitable adhesive material. The research was conducted using a descriptive-experimental method with three adhesive treatments: ET1 = water hyacinth flour + tapioca flour; ET2 = water hyacinth flour + wheat flour; and ET3 = water hyacinth flour + rice bran flour. Each treatment was repeated three times. All treatments used a ratio of 1:2:4 (water: water hygienist: adhesive). Chemical analyses included pH, organic C, total N, total P, total K, total macronutrients, and the C/N ratio. The results showed that pellet fertilizers with tapioca and wheat flour adhesives met the SNI standards for pH and organic C but did not meet the standards for total macronutrients and the C/N ratio. Pellet fertilizer with rice bran flour adhesive met the SNI standards for pH, organic C, and total macronutrients, although its C/N ratio exceeded the maximum standard limit. Rice bran adhesive also produced the highest total N, P, K, and total macronutrient contents among the treatments. Overall, rice bran flour was identified as the most suitable adhesive for improving the chemical quality of water hyacinth pellet fertilizer, in accordance with SNI 7763:2024.
Combined Basal and Foliar NPK Fertilization Effects on Soil Properties and Rice Production Shiamita Kusuma Dewi; Winih Sekaringtyas Ramadhani; Naiya Aninda; Hery Novpriansyah; Afandi
Acta Solum Vol. 4 No. 3 (2026): July 2026
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v4i3.3741

Abstract

Rice (Oryza sativa L.) productivity in intensively cultivated paddy systems is limited by soil fertility loss and low nutrient use efficiency of conventional NPK fertilization, which is prone to ammonia volatilization, leaching, and phosphorus fixation in tropical soils. Foliar NPK application is proposed to bypass soil nutrient losses and improve fertilizer efficiency, but its combined effects with basal fertilizer on soil properties and rice production in tropical paddy conditions are poorly understood. This study aimed to evaluate the effects of combined basal and foliar NPK fertilization on selected soil properties and rice production under tropical paddy conditions in Central Lampung. A field experiment was conducted using a Randomized Complete Block Design with 8 treatments and 4 replications, comprising combinations of basal and foliar NPK. Soil properties, including pH, soil dispersion ratio, and soil texture, alongside agronomic parameters, were associated with rice production. The results showed that combined basal and foliar NPK application significantly affected soil pH, with treatment H having a higher soil pH than the control and the standardized fertilizer. Combined application also significantly improved rice agronomic performance, with treatment H recording the highest rice production of 4.23 kg plot⁻¹, representing a 50% increase over the control treatment. These findings show that combining basal and foliar NPK fertilization can potentially manage nutrients to sustain soil fertility and enhance rice production in tropical paddy systems.
Geomorphological Controls on Soil Fertility Across Potential Rice Expansion Areas in Tropical Lowlands Bagus Adi Nugroho; Adiprasetya Widyatama; Halim Ma'shum; Bardhian Cahyo Aji Gumilang
Acta Solum Vol. 4 No. 3 (2026): July 2026
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v4i3.3742

Abstract

Geomorphological variability strongly influences soil fertility conditions in tropical lowland environments and plays an important role in determining the potential for rice expansion. This study evaluated geomorphological controls on soil fertility across potential areas for rice expansion in Makroman, East Kalimantan, Indonesia, using a pedogeomorphic approach. Geomorphic units were delineated through visual interpretation of satellite imagery, field observations, and DEMNAS-derived elevation data. The study area was classified into four major geomorphic units: floodplains, undulating plains, rolling plains, and slopes. Soil fertility characteristics, including soil pH, soil organic carbon (SOC), and cation exchange capacity (CEC), were obtained from field-based soil observations and laboratory analyses across representative geomorphic units. The results revealed a clear fertility gradient across geomorphic units associated with dominant geomorphic processes. Floodplain environments exhibited the highest pH (5.8), SOC (1.7%), and CEC (32.4 cmol(+) kg⁻¹), whereas slopes showed lower pH (4.9), SOC (0.8%), and CEC (27.3 cmol(+) kg⁻¹). Intermediate conditions were observed in undulating and rolling plains, reflecting transitional redistribution and runoff-dominated processes. Depositional environments favored the accumulation of fine particles, organic matter, and exchangeable base cations, while erosional and leaching processes progressively reduced nutrient retention in elevated landscapes. These findings demonstrate that soil fertility variability in tropical lowlands is controlled not only by geomorphic position but also by the dominant geomorphic processes operating across the landscape. The study highlights the importance of geomorphology-based approaches for supporting sustainable rice expansion and land management in tropical agricultural environments.
Pengaruh Ukuran Butir Kapur Berbeda terhadap pH, Fe-larut dan Al-tukar Tanah pada Lahan Pasang Surut Akhmad Fauzi; Muhammad Mahbub; Syaifuddin Syaifuddin
Acta Solum Vol. 1 No. 2 (2023): Maret 2023
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v1i2.1810

Abstract

Swampland in Indonesia covers an area of ​​34.93 million ha spread over various islands such as Sumatra, Java, Kalimantan, Sulawesi, and Papua. One type of swamp land that is often used in agriculture is tidal lands. The problems faced in the development of tidal lands for agriculture include acidic soil pH, high levels of soluble Fe and Al. One of the efforts to overcome the problem of acidic soil pH, high levels of soluble Fe and Al-dd is liming. The finer grain level of lime may increase the effectiveness of liming. The purpose of this study was to quantify the effect of lime grain sizes on changes in pH, dissolved Fe, and exchangeable Al of tidal lands. This study employed a one-factor completely randomized design (CRD) consisting of 6 treatments (Control; CaCO3 more than 1.00 mm (> 18 mesh); CaCO3 lime, 0.5-100 mm (18 -35mesh); CaCO3 measuring 0.21-0.50 mm (35-70 mesh); CaCO3 measuring 0.21 mm (<70 mesh); CaCO3 lime measuring 0.15-1.00 mm (18 -100 mesh)). The results showed that the difference in the size of the CaCO3 lime granules had a significant effect on changes in pH, soluble Fe and exchangeable Al. The application of CaCO3 lime granules 0.21 mm (<70 mesh) result in increases in soil pH and suppress soluble Fe and exchangeable Al.
Pengaruh Pemberian Kotoran Walet terhadap pH, KTK, C-Organik, N-Mineral dan P-Tersedia pada Tanah Ultisol Maratun Sholikhah; Afiah Hayati; Akhmad Rizalli Saidy
Acta Solum Vol. 1 No. 2 (2023): Maret 2023
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v1i2.1811

Abstract

This study aims to determine the effect of swallow droppings and its best treatment on pH, CEC, organic-C, mineral-N, and available-P in Ultisols. The research method used was a one-factor Completely Randomized Design (CRD) with an incubation period of two weeks, with five treatments of 0, 2.5, 3.0, and 3.5 t ha-1 swallow droppings. Each treatment repeated four times to make 20 experimental units. Parameters observed were soil pH (H2O), CEC, organic-C, mineral-N, and available-P. The results showed that the application of swallow droppings affected pH, CEC, organic-C, mineral-N, and available-P in Ultisols. Swallow droppings of 3.5 t ha-1 significantly affected mineral-N (N-NH4+ and N-NO3-) and other parameters such as CEC, available-P, pH, and organic-C.
Jerapan Isotermal Fosfat Pada Tanah Ultisol Muhammad Asnandi; Fadly Hairannoor Yusran; Muhammad Syarbini
Acta Solum Vol. 1 No. 2 (2023): Maret 2023
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v1i2.1812

Abstract

The distribution area of mineral soil in Indonesia reaches 148 million ha. The acid mineral soil in South Kalimantan for Ultisol reaches 886.186 ha. Ultisols have low fertility and P availability. The low availability of P in the soil is caused by P being absorbed. Isothermal absorption is very useful for measuring P adsorption in the soil due to strong P fixation by Fe and Al in Ultisol soils. Many researchers have suggested determining the amount of P required to reach an optimum level for maximum crop yield to quantitatively describe isothermal adsorption, the most popular of which are Langmuir, Freundlich, and the Brunauer-Emmett-Teller (BET) equations. The purpose of this study was to determine the isothermal adsorption limit of P and describe quantitatively the isothermal adsorption in Ultisols in Banjarbaru City using the Langmuir, Freundlich, and BET equations. From the research results, it can be concluded that P adsorption on Ultisols in Gunung Kupang Village, Cempaka District, Banjarbaru City follows the BET Equation. The high and low P adsorption indicated the availability of P. In other words, the fixation activity of acid mineral soils could result in a smaller amount of available P for plants.
Emisi Dinitrogen Oksida (N2O) pada Beberapa Metode Pengelolaan Limbah Sawah di Kecamatan Anjir Sylvi Riska Amalia; Abdul Hadi; Meldia Septiana
Acta Solum Vol. 1 No. 2 (2023): Maret 2023
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v1i2.1815

Abstract

Wetlands have unique biodiversity and natural phenomena. The climate has recently changed rapidly due to greenhouse gas emissions, especially nitrous oxide from human activities such as paddy rice farming. The purpose of this study is to determine the effect of rice field waste management on the population of nitrogen-fixing bacteria and N2O emissions, and as to determine the shape and closeness of the relationship between the population of nitrogen-fixing bacteria and N2O emissions with different waste management methods. The research method used is a one-factor RGD. Close chamber technique is used for N2O emmisions analysis. The factor tested was the method of managing paddy waste before rice planting with five treatments, namely: A = Rice field waste was slashed and then lifted into the mound after a few days of being returned to the field; B = Rice field waste is carried out management slashed, rolled up, reversed and stretched; C = Rice field waste is slashed, planted with traces and then slashed again after the trace is transferred to land outside the research plot; D = Rice field waste sprayed with herbicide 2 times; E = Rice field waste sprayed with herbicide 1 time and then soil in the tractor. Each treatment was repeated four times so that 20 units of the experiment were obtained. The results showed that the method of rice field waste management carried out had no real effect on N2O emissions and nitrogen-fixing bacteria. N2O emissions not correlate with the activity of nitrogen-fixing bacteria from several methods of rice field waste management carried out
Pengaruh Kebasahan Tanah terhadap Perubahan Daya Serap Air Gambut Terbakar di Kecamatan Landasan Ulin Kalimantan Selatan Syahbian Syahbian; Syaifuddin Syaifuddin; Abdul Haris
Acta Solum Vol. 1 No. 2 (2023): Maret 2023
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v1i2.1837

Abstract

Peat swamp land in Indonesia is quite extensive, which is 10.8% of Indonesia's land area, the area of peatland in Indonesia is estimated at around 14.95 million hectares, the largest on the islands of Sumatra, Kalimantan and Papua and a small part in Sulawesi. The dry process is not good can be associated with bulk density. Irreversible dryness can occur in peat with low lindak density, while peat with high lindak density is relatively easy to reabsorb water. Peat soils store much higher carbon than mineral soils. Every gr of dry peat stores about 180-600 mg of carbon, while every gr of mineral soil contains only 5-80 mg of carbon. This research method uses a descriptive exploratory method whose variable approach is carried out through land surveys and is supported by the results of soil analysis in the laboratory. The results showed the value of water content and water absorption of peat soil in the protected forest of Banjarbaru peat soil based on different times and showed a decrease in the level and absorption of peat soil.
Perubahan pH, Fe-larut, dan P-tersedia di Tanah Sulfat Masam Aktual (Sulfaquept) yang Diberi Pupuk Kandang Sapi dan Genangan Air Noor Soleha; Bambang Joko Priatmadi; Zuraida Titin Mariana
Acta Solum Vol. 1 No. 2 (2023): Maret 2023
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v1i2.1838

Abstract

Organic matter application and water management were frequently applied to prevent the oxidation of pyrite in acid sulfate soils. The purpose of this study was to determine the effect of cow manure application with varying height of inundation on soil pH, soluble-Fe, and available P of acid sulfate soils. This study employed factorial treatments and in a completely randomized design. The first factor was the dosage of cow manure: 0, 10, and 20 t ha-1, while the second factor was various water depths: 5, 10, and 15 cm. Results of study showed that the interaction of cow manure and water depth did not affect soil pH, but single factor of the treatments (cow manure and water depth) significantly affected soil pH. The interaction of cow manure and water depths did not significantly decrease the solubel-Fe in the fourth week. The interaction of cow manure and water depths significantly increased P-availability in the fourth week. Results of this study demonstrated that cow manure application and water depth improved soil pH and P-availability of acid sulfate soils.

Page 14 of 15 | Total Record : 143

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