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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 369 Documents
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Integration of geographical information systems in the land suitability assessment for rice crops in Sleman District, Indonesia Romadhona, Sukron; Puryono, Sri; Mussadun, Mussadun
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 14 No. 1 (2025): 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.14.1.2025.728

Abstract

Peatlands (according to the Governmental Regulation nr 71/2014) can be utilized for agriculture and plantation if the peat depths are less than 3 m or more than 3 m, peatlands have to be conserved or restored. Determining peat depths can be conducted in the fields by intensive surveys which were so expensive, inefficient, and ineffective, therefore it was essential to find our simple alternative methods how to measure peat depths easily. The research aimed to establish a spatially reliable interpolator for peat depth variability by utilizing the kriging method. The research was conducted in Seponjen Village, Kumpeh, Muaro Jambi, Jambi Indonesia. Primary data were processed by applying ArcGIS 10.3 software. The interpolated dataset of peat depths validated their actual dataset and performed an excellent relationship (indicated by a positive correlation coefficient, r = 0.920) and a coefficient of determination (R2 = 0.847). It indicated that the interpolated dataset could be utilized to make maps by kriging. The very deep peat (Site A) and the deep peat (Site B) showed a tendency for a strong autocorrelation of the data distribution of peat depths. Autocorrelation tended to be anisotropic towards the river on the shallow peat (Site C). A good interpolator of peat depth variability can be generated using the kriging method.
Conservation strategy based on soil erodibility with several land covers and slopes in the upstream of Air Bengkulu Watershed Lovita, Vinni; Sulistyo, Bambang
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 14 No. 1 (2025): 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.14.1.2025.731

Abstract

Global land cover changes driven by increasing demand for agricultural, residential, and industrial land have caused various environmental issues, including soil erosion. The study aimed to analyze soil erodibility values upstream of the Air Bengkulu watershed based on land cover and slope factors. The analysis was conducted using soil samples obtained through purposive sampling based on soil map units, topography, and land cover. Soil erodibility values were determined through laboratory analysis of organic matter, texture, structure, and soil permeability, followed by calculating erodibility. After obtaining the distribution of erodibility values, the next step involves identifying erodibility values based on slope and land cover to analyze the interaction between slope and land cover on erodibility values. Conservation recommendations are provided based on slope, land cover and consideration of community aspects to reduce erodibility values and minimize erosion risk. Results indicate that soil erodibility in the Air Bengkulu watershed ranges from very low to very high, with most areas classified as low. The findings suggest that soil erodibility values vary depending on land cover and slope. Higher erodibility values were observed in areas with minimal land cover, especially in mining and cultivated land with poor management practices. In contrast, dense vegetation such as forests and well-maintained plantations significantly reduced soil erodibility values. The interaction between slope and land cover plays a crucial role in determining soil susceptibility to erosion risk. Vegetative and mechanical conservation strategies are suggested to mitigate erosion risks, improve land productivity, and support ecosystem sustainability in the region.
Antibacterial activity of ginger essential oil derived nanobactericide against the growth of phytopathogenic bacteria - A Review Gunasena, Mahesh Tiran; Bin Ahmad, Khairulmazmi; B Hussein, Mohd Zobir; Ali, Asgar; Syazwan Afif, Mohd Zobir; bin Abdul Wahab, Mohd Aswad
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 14 No. 1 (2025): 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.14.1.2025.750

Abstract

Phytopathogenic bacteria infect various plants, causing economic losses, negative environmental consequences, and harming agricultural development. The most currently available antimicrobial agents for agriculture were potentially toxic, non-biodegradable, and cause significant harm to the ecosystem. As a result, novel, effective, safe, user-friendly, and alternative methods were urgently needed. Essential oils (EOs) have great potential in managing plant bacterial diseases because they successfully destroy various pathogenic bacteria. Ginger essential oil (GEO) is more widely used because it contains a diverse mixture of volatile substances, such as phenolic compounds, terpenes, polysaccharides, lipids, and organic acids. The antibacterial activity of the EO against phytopathogenic bacteria is significantly improved when it is converted into nanoparticles. Nanoparticles (NPs) that were derived from EOs have a considerable antibacterial action resulting from increased chemical solubility and consistency, minimal rapid evaporation, and slow depletion of the effective substances of EO. Ginger EOs were encapsulated in chitosan as a nanogel to improve the antibacterial effects and the consistency of the oils against pathogenic bacteria. Nanogel had been shown to amplify the antibacterial effect of EOs against pathogenic bacteria by enhancing their potential to disturb the integrity and permeability of the cell membranes. This paper focuses on three major parts of ginger essential oils: the antibacterial efficacy to control plant pathogenic bacteria, the possible mechanisms of action of essential oils as nanobactericides, and more importantly, the fabrication of bactericide nanoformulation.
Evaluation of the in vitro efficacy of selected plant extracts against strawberry anthracnose disease in highlands of Sri Lanka Pushpanjie, Kalupahana; Chandra Babu, Arulappu George; Harsha Chathuranga, Karuna Pedige; Muditha Indrajith Karunarathna, Herath Kumara Bandarage
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (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.15.1.2026.758

Abstract

  Anthracnose was one of the major diseases of strawberry cultivation in Sri Lanka, caused by a fungal pathogen Colletotrichum acutatum Simmonds, and the application of synthetic fungicides was the well-known method used in disease management. Since there was a requirement to find alternative methods to control the disease, six plant extracts were tested as an organic management approach. The study aimed to evaluate the in vitro efficacy of selected plant extracts against Colletotrichum acutatum isolated from strawberry and to identify promising botanical alternatives to synthetic fungicides for sustainable strawberry cultivation in the highlands of Sri Lanka. In well diffusion test, sterilized distilled water, garlic (0.25 g/mL), Mint (0.25 g/mL), rosemary (0.25 g/mL), turmeric (0.25 g/mL), ginger (0.25 g/mL), cinnamon oil (0.25 mL/mL), Fungicide (Chlorothalonil 500 g/L SC (0.003 mL/mL) were the tested treatments. Cinnamon oil suspension (0.25 g/mL) and garlic bulb extract (0.25 g/mL) were able to control C. acutatum under in vitro conditions. However, according to the sensory evaluation test of plant extracts treated fruits, the most preferable plant extract application was garlic bulb extract, which is having significantly similar “overall acceptance” with untreated fresh strawberry fruits. Based on the results, garlic bulb extract is suggested as an organic disease management method which can be used in an anthracnose management method in organic strawberry production.
Ethnobotanical study of medicinal flora in the Lembak Delapan Tribe Community of Jum'at Village, Talang Empat District, Central Bengkulu Regency Rahayu, Sri; Anwar, Guswarni; Wiryono, Wiryono
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (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.15.1.2026.762

Abstract

The potential for medicinal plants in Jum'at village is significant, despite the fact that many people today do not use traditional medicine due to the convenience of purchasing pharmaceuticals at stores, accessing remedies at home, or seeking treatment at health facilities or hospitals. The study aimed to identify and assess medical plant species and the socio-cultural conditions of the Lembak Delapan tribe's flora consumption in Jum'at village, Talang Empat District, Central Bengkulu Regency. This study used snowball sampling, interviews, and village tours to collect data and identify plants by comparing their characteristics to photos in plant identification literature. The findings revealed that 53 plant species used as traditional medicine were divided into 33 groups, with 10 species being the most commonly used by the community. These were the most often planted plants, others grew naturally near the hamlet. Plant medicinal components include the entire plant or specific portions (roots, stems, leaves, and fruit) and were viewed by the community as treatments for both internal and external ailments. They were processed by boiling, pounding, direct ingestion, brewing, squeezing, and incineration. We suggest that future studies collect the most recent data on the medicinal plant kinds found in Bengkulu Province and to carry out research on the chemical composition of the discovered medicinal plants.
Efficacy test of biological agent Trichoderma spp. against white root fungus disease (Rigidoporus microporus) in rubber tree (Hevea brasiliensis) Rapani Febbiyanti, Tri; Ardika, Risal; Anita Setyawati
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (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.15.1.2026.766

Abstract

White root rot disease caused by Rigidoporus microporus is one of the most destructive root diseases in rubber plantations, leading to significant yield losses each year. The study aimed to evaluate the efficacy of the biological control agent Trichoderma spp. in suppressing the development of white root fungus on rubber seedlings. Laboratory assays using the dual culture method and greenhouse trials with preventive and curative applications were conducted, involving treatments with Trichoderma-based biofungicide, chemical fungicide, and control. Laboratory results showed that Trichoderma spp. inhibited the growth of R. microporus by more than 44% on the fifth day after inoculation. In greenhouse experiments, preventive application of Trichoderma spp. was more effective than curative application, as indicated by improvements in stem diameter, plant height, and the number of leaves. Besides antagonistic activity, Trichoderma spp. contributed to improved soil fertility and plant growth. The lowest disease intensity (25.2%) was observed in the preventive treatment with Trichoderma, while in curative treatments, its effectiveness was comparable to that of chemical fungicides. The findings confirm that Trichoderma-based biofungicides are effective in controlling white root rot disease while simultaneously enhancing plant growth, making them a sustainable alternative to chemical fungicides.
River segmentation based on water quality index for management policy formulation: an analysis of the Enim River in South Sumatra Lisa, Mona; Said, Muhammad; Mohadi, Risfidian
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (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.15.1.2026.773

Abstract

This study aimed to delineate segments of the Enim River based on the Water Quality Index (WQI), using the Pollution Index (PI) as the primary method. Water quality data were collected from 14 monitoring stations between 2022 and 2024, covering several physicochemical and biological parameters. Hierarchical Cluster Analysis (HCA) was applied to classify stations based on similarities in pollution patterns. The results identified three main segments: stations with relatively good water quality, stations with fluctuating pollution levels, and stations with high pollution requiring priority attention. This approach provides a comprehensive spatial and temporal overview, supporting the development of more targeted and evidence-based river management policies. The study points to the WQI as an effective and accessible tool for assessing water quality, enhancing stakeholder understanding, and serving as a foundation for river conservation and restoration planning.
Knowledge and adaptation strategies of coffee smallholders toward climate change: evidence from Tanjung Agung, Semende Darat Ulu Afriyani, Asia; Agustina, Tuty Emilia; Putri Hsaa, Aura Khalisya; Wijayanti, Ratih; Martinus, Ali
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (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.15.1.2026.776

Abstract

Coffee farming was highly vulnerable to the impacts of climate change. Exploring the strategies used by small farmers in Tanjung Agung Village has had a big impact on climate change. This study aimed to identify the level of knowledge, adaptation practices, and polyculture practices and types of shade trees used by coffee smallholders in facing climate change in Tanjung Agung Village, Semende Darat Ulu Regency. These strategies have made a significant difference. This study used a qualitative, survey-based approach. It also conducted data collection and analysis. This process was both simultaneous and cyclical coffee smallholders have noticed the effects of climate change in the last 1-2 years. Also, 35% of smallholders have known about climate change for the last 3-5 years. Coffee smallholders use indicators to predict climate change. These indicators include increased temperatures and shifts in the rainy and dry seasons. Water availability was also an indicator. Up to 90% of small farmers take steps to reduce climate change. These steps include using better types of coffee, planting trees for shade, and controlling how far apart the coffee plants were. Farmers also make air holes and use coffee bean skins to improve the soil. Our findings show that coffee smallholders understand climate change impacts well. They also quickly use strategies to adapt their crops to the changing climate. Smallholders use 16 types of shade crops as a strategy. The most widely used shade crops were petai, mango, avocado and durian.
The potential of Pterocarpus indicus as a revegetation plant for coal mine Reclamation Land Wijayanti, Ratih; Aprianti, Nabila; Nutayla, Nazula; Aries Nugraha, Hardian; Afriyani, Asia
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (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.15.1.2026.777

Abstract

Coal mining exploitation generally uses open-pit mining techniques that have implications for environmental degradation, particularly changes in the physical, chemical, and biological properties of the soil. Revegetation of reclaimed land is a strategy for restoring ecosystem functions that have been disrupted by mining activities. This study aimed to evaluate the growth potential of Pterocarpus indicus through direct planting methods and to assess the effect of fertiliser type on plant growth acceleration on post-coal mining land. Field observations were used to measure plant growth parameters, including height, stem diameter, and number of leaves. The planting material used was stem cuttings, with variations in fertiliser treatment. Plant material type, fertiliser type, and application dose had a significant effect on plant growth variables (P<0.05). Duncan’s multiple range test indicated that the use of bokashi fertiliser at a dose of 3 kg per planting hole gave the best results, as evidenced by an average plant height of 104.38 cm, an average stem diameter of 37.692 cm, and a total of 21.99 leaves. Therefore, the direct planting method using stem cuttings as planting material with the application of bokashi fertiliser at a dose of 3 kg plays an important role in accelerating vegetation recovery in coal mine reclamation.
Farming patterns and factors affecting rice farming income on various types of lebak swamp land in Kalidoni Sub-District, Palembang City Yunita, Yunita; Silvian, Trissa; Maharani, Dwi Putri
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (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.15.1.2026.779

Abstract

Rice farming in Indonesia plays a strategic role in ensuring national food security and is a key sector for improving farmers’ welfare, especially in rural areas. The study aimed to analyze the factors influencing rice farmers’ income based on the typology of lebak swamp land, with a focus on Sungai Selincah Urban Village, Kalidoni Sub-District. The objectives were to describe rice farming patterns based on lebak swamp land typology, to analyze total farming income by land type, and to identify key determinants of income across different land typologies. The research location was selected purposively, and data were collected through a survey of 60 respondents. Data were analyzed using descriptive statistics and multiple linear regression. The results show that rice farming practices vary according to land typology, significantly affecting income levels. Among the three land types, farmers on middle lebak swamp land earned the highest income at 45,627,037 IDR/year (3,802,253 IDR/month), categorized as 'very high'. Farmers on shallow lebak swamp land earned 33,306,153 IDR/year (2,775,512 IDR/month), categorized as 'high'. Meanwhile, those on deep lebak swamp land earned 20,651,753 IDR/year (1,720,979 IDR/month), categorized as 'moderate'. The regression results indicate that land area, production volume, and farming experience positively and significantly affect income (p<0.05). Furthermore, compared to deep lebak swamp land (as the reference category), farmers cultivating shallow lebak swamp land and middle lebak swamp land types earned significantly higher income, indicating a substantial income differential across land typologies.

Page 33 of 37 | Total Record : 369

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