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Jurnal Lahan Suboptimal
Published by Universitas Sriwijaya
ISSN : 22526188     EISSN : 23023015     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Lahan Suboptimal: Journal of Suboptimal Lands (JLSO) (p-ISSN 2252-6188; e-ISSN 2302-3015) publishes original research papers, literature reviews, and short communications that cover on topics relevant to suboptimal lands: freshwater swamps, tidal lowlands, peatlands, dry and dry acid lands, shaded ecosystem, ex-mined lands, saline and marine coastal wetland ecosystems. The Journal serves as a multi-disciplinary forum covering key issues in Suboptimal Lands science and technology, management, policy and ecological economics. The journal is published by Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO), Universitas Sriwijaya. The journal was first published on April of 2012 with twice per year in frequency on April and October.
Arjuna Subject : -
Articles 681 Documents
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Dynamics of land cover change on population growth based on Geographic Information System (GIS) 2020–2024 in Palembang city Afif Naufal Ricardi; Wijaya Mardiansyah; Gerry Utama
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.780

Abstract

This study aimed to analyzes population growth and land cover change in Palembang City from 2020 to 2024 using GIS, the overlay method, and correlation analysis between population data and time-series land cover maps. The results show that population growth significantly contributes to the expansion of open/built-up land, particularly in densely populated districts such as Sukarami, Ilir Barat Satu, and Alang-Alang Lebar. The correlation matrix indicates a strong association between population and open/built-up land (r=0.84), and a moderate association with vegetation (r=0.47). A strong negative interaction between open/built-up land and vegetation (r=0.77) suggests that the growth of built-up regions reduces green space. Population size is almost uncorrelated with water/clouds (r=0.01), indicating that natural factors have a greater influence on this category than human activity. Overall, the study concludes that population expansion in Palembang drives urbanization and vegetation decline, highlighting the need for sustainable spatial management to maintain a balance between development and environmental sustainability.
Effect of different growing media and PGPR concentrations on the growth performance of basil in substrate hydroponic system Luluk Sulistiyo Budi; Nurlaili Habibi Danata; Rafika Indah Fitriyanti; Rio Kusuma Adi Pratama
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.786

Abstract

Basil (Ocimum basilicum L.) was classified as a vegetable and aromatic plant used in health, culinary, and essential oil production. The main challenges in basil cultivation include limited land availability, soil degradation, water scarcity, and land conversion caused by urban development. A promising alternative to overcome these constraints was soilless culture, commonly known as hydroponics, which enables efficient plant production without soil. Various types of substrates can be applied in hydroponic systems, including organic media derived from agricultural residues. In addition, the use of PGPR plays an important role in enhancing plant growth through nutrient mobilization and phytohormone production. This study aimed to evaluate the optimal type of growing media and PGPR concentration to support basil growth in a substrate hydroponic system. The research was conducted using a factorial randomized block design (RBD), with two factors, the type of planting media (three levels) and the PGPR concentration (four levels). The results showed that cocopeat supported superior basil growth compared to rice husk and husk charcoal. Furthermore, the application of PGPR significantly enhanced plant growth relative to treatments without PGPR. Regression analysis indicated that each type of planting media required a different optimum PGPR concentration to achieve maximum biomass production. Specifically, cocopeat required 8.87 mL/L, husk charcoal required 9.3 mL/L, and fresh husk required 14.4 mL/L. Considering both yield performance and production cost efficiency, the use of cocopeat combined with PGPR at a concentration of 8–10 mL/L was recommended as the most effective treatment.
Application of mussel freshwater shells lime with different particle size percentages in media culture of pangasius catfish Mutiara Khairunnisa; Dade Jubaedah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.789

Abstract

Lime is composed of different particle sizes. This research aimed to determine the optimal particle-size distribution of mussel freshwater shell lime to increase the pH of swamp water and to assess its effect on the survival and growth of catfish. This research used a completely randomized design with six treatments and three replications. The treatment consist of calcite lime as a control with a percentage of retained lime at sieve 10 mesh 20.7%, 20 mesh 22.7%, 60 mesh 55.3%, and passed 60 mesh 1.3% (P0), mussel freshwater shells lime with retained on 10 mesh 40%, 20 mesh 20%, 60 mesh 20%, and passed 60 mesh 20% (P1), retained on 10 mesh 20%, 20 mesh 40%, 60 mesh 20%, and passed 60 mesh 20% (P2), retained on 10 mesh 20%, 20 mesh 20%, 60 mesh 40%, and passed 60 mesh 20% (P3), retained on 10 mesh 20%, 20 mesh 20%, 60 mesh 20%, and passed 60 mesh 40% (P4), retained on 10 mesh 20.7%, 20 mesh 22.7%, 60 mesh 55.3%, and passed 60 mesh 1.3% (P5). The results showed that the application of mussel freshwater shells lime with particle size percentages retained on 10 mesh 20%, retained on 20 mesh 20%, retained on 60 mesh 20%, passed 60 mesh 40% (P4) was the best treatment that can increase the swamp water pH from 5.11 to 7.60, absolute growth of weight and length of 7.86 g and 5.56 cm, respectively, and survival rate 96.33%.
Growth and adaptability of Pterocarpus indicus, Delonix regia, and Melaleuca cajuputi in post-coal mining Khairuddin Khairuddin; Restu Juniah; Ratih Wijayanti; Asia Afriyani
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.798

Abstract

Reclamation of post-mining coal land requires effective revegetation strategies to accelerate ecosystem recovery and establish sustainable vegetation. The purpose of this study was to evaluated the effects of fertiliser dose on the vegetative growth of Pterocarpus indicus, Delonix regia, and Melaleuca cajuputi grown in post-mining reclamation soil. The experiment was conducted using plants cultivated in polybags containing reclamation soil and subjected to different fertilizer doses. Growth was evaluated based on plant height, stem diameter, and number of leaves, while data were analysed using analysis of variance (ANOVA) at a 5% significance level. The results showed that increasing the fertiliser dose up to 5 kg produced the best overall growth, with mean plant height, stem diameter, and number of leaves reaching 82.80 cm, 3.76 cm, and 188.22, respectively. Fertiliser dose significantly affected the growth of P. indicus and M. cajuputi (P<0.05), whereas D. regia showed a relatively stable response to increasing fertilizer doses. Overall, a 5 kg fertilizer dose was the most effective treatment for promoting vegetative growth under the tested reclamation-soil conditions. These findings provide a basis for optimizing fertilizer application and selecting suitable plant species for revegetation of post-mining coal land.
Effectiveness of biochar size on physical properties of psamment soil Elsa Lolita Putri; Adrinal Adrinal; Gusmini Gusmini; Rosazlin Abdullah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.800

Abstract

The ability of biochar to improve the physical and hydrological properties of Psamment soil, which has a fine texture, depends heavily on its characteristics, including particle size. This study aimed to investigate the effect of biochar particle size on the physical properties of the soil and water movement in Psamment soil. The research method employed a completely randomized design with biochar treatments prepared at pyrolysis temperatures of 450–500°C, divided into four dry sieve sizes: 2–1, 1–0.5, 0.5–0.1, and <0.1 mm, and mixed into the growing medium with Psamment soil at a 5% application rate. The growing media were incubated at room temperature for 21 days. This study consisted of 1 control and four treatments with five replicates, resulting in 25 pot experiments. Water content was maintained at field capacity throughout the experiment. This experiment measured the physical properties of the soil. The results showed an improvement in soil physical properties, specifically an increase in clay content for biochar particles <0.5 mm; however, there was an increase in soil moisture and organic matter content with the application of biochar particles <2.00 mm. It could be concluded that soil physical properties could be influenced by the application of different biochar particle sizes, particularly regarding the soil’s ability to retain water in Psamment soil.
Effect of NPK fertilizer dose to improve brazilian spinach (Alternanthera sissoo) growth in the Jakabaring Kitchen Garden, South Sumatera Sukur Abdurahman; Benyamin Lakitan; Strayker Ali Muda
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.801

Abstract

NPK fertilization in Brazilian spinach cultivation in kitchen gardens is generally still carried out without clear Dose references, which has the potential to reduce plant growth efficiency. This study aimed to evaluate the growth response of Brazilian spinach to several doses of NPK fertilizer to determine the most suitable dose for the urban kitchen garden system. The research was conducted in Jakabaring District, South Sumatera, using a Randomized Block Design with four NPK fertilizer treatments (0, 3, 5, and 7 g per plant) and twenty replications. The data were analyzed using analysis of variance (ANOVA) at a 5% significance level. The results indicated that NPK fertilizer doses did not significantly affect (p>0.05) the number of leaves, canopy length, canopy width, and canopy area of Brazilian spinach. Descriptively, several growth parameters tended to show higher average values at the medium dose compared to the low or high doses. NPK fertilizer application showed no significant effect on plant fresh weight (p>0.05); however, the 3 g per plant treatment tended to produce higher average biomass compared to other treatments. This condition indicates that Brazilian spinach has good adaptability and was capable of growing optimally in relatively limited nutrient availability in kitchen gardens. It could be concluded that the use of low to moderate doses of NPK fertilizer was sufficient to support the growth of Brazilian spinach efficiently and sustainably in kitchen garden systems.
Population of Pentalonia negronervosa Coquerel (Hemiptera: Aphididae) in organs banana cultivars of the Genome AB Arsi Arsi; Titi Tricahayati; Suparman Suparman; Harman Hamidson; Aaliyah Keshya Azriella
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.810

Abstract

This study aimed to determine the population and morphology of Pentalonia nigronervosa maintained on various AB-genome banana cultivars. The research was conducted using a Factorial Complete Random Design (CRD) with 4 banana cultivars and 3 replications. Indonesia was rich in horticultural crops, including bananas, which were widely cultivated in tropical regions for their high economic value. However, banana cultivation was often constrained by pest infestations, particularly aphids such as P. nigronervosa Coquerel, which can reduce plant productivity and act as vectors of important viral diseases. Therefore, studies on the population dynamics of P. nigronervosa across different organs of banana cultivars in the AB genome group were important for understanding pest distribution and for supporting effective pest management strategies. P. nigronervosa act as pests and vectors that can transmit diseases and result in a decrease in the productivity of banana plants. The population results of P. nigronervosa on plant part factors on days 5, 10, 15, and 20 on the leaf, stalk, and stems. The average population of P. nigronervosa was highest on day 15 at 45.67 in the stem section. The lowest average population on banana plant leaves on days 15 and 20 was 0.00. Population results of P. nigronervosa in the 5th, 10th, 15th, and 20th banana cultivars in the barangan, lilin, susu, and raja bulu cultivars. The average population of P. nigronervosa was highest on the 15th day of the banana susu plant cultivar 36.33. The average population was lowest on 20-day cultivars of bananas barangan and lilin 0.00.
Soil morphological characteristics and profile variability across sugarcane landscapes M. Edi Armanto; Elisa Wildyana
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.816

Abstract

This research aimed to characterize soil morphological features and assess profile variability across sugarcane-dominated landscapes. This research will significantly advance our knowledge of the features and soil morphology of sugarcane in volcanic ash soils. The research was situated in Central Lampung, and topographic maps with a scale of 1:5,000 were used to describe the survey type. Approximately fifty-eight soil samples with twelve profile descriptions were collected from soil pits at three soil catenas (two under sugarcane and one under forest), and completely analyzed in the laboratory. The research resulted in the finding that the relationships between soil morphology and soil characters exist due to intensive leaching and erosion.  All profiles were increasingly leached from the hilltop to the lower slopes. The lowest boundaries of the leaching process are impermeable hard iron layers between the tertiary and quaternary sediments (krokos layers) found in the BC or B3 horizons (depths of 70–120 cm). This phenomenon tends to form the open system in the sugarcane landscape; however, the forest system was closed. All soil characters are presented in depth functions to ease their analyses. Fertilization and dolomite application on the sugarcane soils increased only pH, P content, base saturation, and exchanged bases, decreasing exchanged Al and Al saturation in topsoils; these characteristics are relatively constant for all subsoils. Other soil properties were relatively constant. Soil compaction due to mechanization was a serious problem of soil degradation and fertility reduction, and became more serious due to decreasing infiltration rates from hilltop to lower slopes.
Soil properties and climatic characteristics of lowland Tayu tea (Camellia sinensis L) in West Bangka, Indonesia Limartaida Siahaan; Yus Dwi Yanti; Bara Yudhistira; Badriyah Badriyah; Geby Geby
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.817

Abstract

Teh Tayu (Camellia sinensis var. sinensis) is a local tea plant variety cultivated in the lowland areas of Bangka Barat Regency, a region that is uncommon for tea-plantation. Tea plants generally preferred to grow optimally in highland areas. This study aimed to evaluate soil fertility status and land suitability for Tayu tea cultivation based on soil chemical properties and agroclimatic conditions. In this regard soil samples were taken from local Tayu tea plantations and several key parameters, including soil pH, organic carbon, total nitrogen, available phosphorus, and exchangeable potassium were analysed. Additionally, agroclimatic data such as temperature and rainfall over the past year were used to describe the growing environment. Soil analysis showed that pH, nitrogen, organic carbon, and potassium levels are within acceptable ranges, but phosphorus was elevated and cation exchange capacity was reduced. Climate factors like precipitation, soil temperature, and solar radiation may limit growth of tea plants. PCA indicates that soil chemistry specially phosphorus influencing flavonoid levels and potassium differentiating locations significantly affects bioactive compounds contents in Tea leaves. Organic carbon, nitrogen, and CEC impact phenolic compounds. These results suggest that Tayu tea can grow in lowland conditions, although environmental constraints may potentially affect its productivity. This research provides basic information for the development and management of tea cultivation in similar environmental conditions.
Open-data remote sensing framework for peat hydrological unit condition scoring in South Sumatra Peatlands (2018-2024) Muaffan Alfaiz Wisaksono; Abdhullah Syawalbhi Leo
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 2 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.2.2026.818

Abstract

Tropical peatland degradation remains a critical environmental challenge in Southeast Asia, yet operational monitoring frameworks that align with governance boundaries remain limited. This study aimed to develop an open-data remote sensing framework for assessing peatland condition at the Peat Hydrological Unit (Kesatuan Hidrologis Gambut, KHG) scale in South Sumatra, Indonesia. Using Google Earth Engine, four satellite-derived indicators were extracted annually for 12 KHGs over seven years from 2018 to 2024: Normalized Difference Water Index from MODIS MOD09A1, Enhanced Vegetation Index from MODIS MOD13Q1, fire frequency from NASA FIRMS, and surface water extent from the JRC Global Surface Water dataset. The indicators were normalized and integrated into a weighted composite score using weights of 30% for NDWI, 25% for EVI, 30% for inverse fire frequency, and 15% for surface water extent. In 2024, seven KHGs were classified as At Risk and five as Intact/Recovering, with scores ranging from 46.5 to 76.9. Six KHGs declined between 2018 and 2024, while five improved. El Nino years reduced health scores by an average of 11.3 points, and cropland conversion was the strongest land-cover predictor of lower scores (r=−0.52). Weight sensitivity analysis showed that seven of twelve KHG classifications remained stable across five weighting scenarios. The framework was reproducible, governance-aligned, and suitable as a screening tool for peatland restoration prioritization.

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