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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.
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Articles 12 Documents
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Search results for , issue "Vol. 13 No. 1 (2024): JLSO" : 12 Documents clear
The impact of government purchase price policy of rice for producers and consumers in Indonesia Saleh, Tri Wahyudi; Lakitan, Benyamin; Budianta, Dedik; Yamin, Muhammad; Cahya, Gemala; Huanza, Muhammad
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.654

Abstract

One of the rice policies was the government purchase price policy which was the price in grain or rice purchases by the Government at producer level to be stable become government rice reserves. The point of this research was to define the impact of the government purchase price policy of rice for producers and consumers. This research was conducted using qualitative analysis with descriptives based on tabulations of secondary data. Results of the research showed that government purchase price was part of the government's efforts to protect the basic price of grain and rice at the farm level thus creating affordable input prices and providing economic added value to farmers. The study found that an improvement in government purchase price  by 18-20% could increase the price of grain and rice from March to August 2023. The total percentage change in prices from March to August 2023 for dry harvested grain was 10.3%, dry milled grain was 10.8%, premium rice was 0.6%, medium rice was 3.2% respectively. Meanwhile, the impact on consumers of this policy was the occurrence of inflation of 0.41% which caused rice prices to increase. The government should evaluate the Government Purchasing Price (GPP) gradually every year.
Optimizing the growth of pangas catfish seeds through the addition of spirulina in feed Harmilia, Elva Dwi; Khotimah, Khusnul; Nofianti, Rini
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.655

Abstract

Pangasius catfish (Pangasius sp.) was an important commodity in Indonesia. High demand in the market requires production to be carried out actively. Adding spirulina as a supplement to feed was a way to increase the growth of pangasius catfish seeds for optimal production. The aimed of the research was to determine the effect of spirulina on the growth of pangasius catfish seeds which were added to pelleted feed. The research used a completely randomized design with four levels of treatment. Treatment 1 (100g commercial pellets + 3g spirulina), treatment 2 (100g commercial pellets + 5g spirulina), treatment 3 (100g commercial pellets + 7 g spirulina), treatment 4 (100g commercial pellets + 9g spirulina). The parameters observed were growth of length, weight, survival, and water quality (pH, temperature and dissolved oxygen). The study results showed that the addition of 7 g spirulina had the best effect on growth with a length of 5.25 cm and a weight of 6.74 g. Meanwhile, the lowest occurred when adding 9 g of spirulina with a length of 4.08 cm and a weight of 5.78 g. There was no mortality during maintenance so that the survival rate of pangasius catfish seeds was 100% in each treatment. So the addition of spirulina to feed has an effect on the growth of pangasius catfish. However, if ftoo much spirulina was added, the effect will not be optimal.
Application of ameliorant on the growth and product of pakchong (Pennisetum purpureum cv Thailand) in post-tin mining land Lestari, Tri; Syazili, Ahmad; Pratama, Deni
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.658

Abstract

Tin mining activities on Bangka Island cause the land to become nutrient-poor. Post-tin mining land use was done by adding ameliorant and cultivating pakchong grass. This research aimed to see the growth and yield of pakchong grass in post-tin mining land by applying mycorrhiza, biosaka and NPK fertilizer. This research was carried out on post-tin mining land in Dwi Makmur Village, Merawang District, Bangka Regency from March 2023 to July 2023. This research used a Randomized Group Factorial Design (RAKF) consisting of 2 treatment factors. The first factor was giving Mycorrhiza (B1) and Without Mycorrhiza (B2). The second factor was NPK 100% (P1), NPK 75% + Biosaka (P2) and NPK 50% + Biosaka (P3). The analysis of variance showed that mycorrhizal treatment had a significant effect on the number of leaves and tillers and had no significant effect on other treatments. Giving NPK + Biosaka treatment had a very significant effect on the number of leaves and had no significant effect on other treatments. The mycorrhiza  to pakchong plants grows better than without giving mycorrhiza. Giving a fertilizer to the 75% NPK + Biosaka (P2) treatment had no significant effect on the 100% NPK (P1) treatment. Giving mycorrhiza + NPK 75% (B1P2) results in higher plant height and leaf number compared to other treatments.
Optimizing rice farming business inputs in shallow freshwater swamp (case study of Sungai Dua Village, Rambutan District, Banyuasin Regency) Nearti, Yuwinti; Zuliansyah, Muhammad Andri; Jayanti, Nirmala
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.660

Abstract

One of the food crops that was widely cultivated by the community was lowland rice. Food security was a superior commodity where lowland rice was the icon. The objectives of this research was to determine the use of production factors in optimizing rice based on output effects through farming inputs and to determine production factors in the economic efficiency of rice farming. The research used production function analysis Cobb Douglas and Marginal Product Value. The production factor data analysis method used multiple regression analysis with software SPSS 25 while Marginal Product Value (NPM) used Stochastic Frontier Analysis (SFA). The results of the research showed that production factors that could influence the input of rice farming consist of fertilizer and seeds, where each time more input was used for the part needed, the farmer's income in planting period 1 was higher than planting period 2. Lowland rice farming in Sungai Dua Village, District Rambutan Banyuasin Regency in shallow swampy areas, after Marginal Product Value analysis was carried out, the planting season for both period 1 and period 2 was declared inefficient. Farming inputs that were not yet optimal in shallow swampy areas consist of fertilizer and seeds. The seeds used by Inpara 2 were suitable for swampy land but were still used excessively, while fertilizer was an increase in nutrients for the soil and plants but the use was still small due to farmers' limited capital. limited. F-hit >F- tab in each stratum with a confidence level of 95% in each stratum, it was stated that the independent variables together have a significant effect on the dependent variable. Intensification of plant maintenance was given more attention by increasing the use of labor to support increased output and maximum income.
Comparative effectiveness of packaging design pheromone product to sustainable pest management of rhinoceros beetle in oil palm plantation Hendarjanti, Henny
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.665

Abstract

The rhinoceros beetle (Oryctes rhinoceros L.) is the primary pest of oil palm plants. Rhinoceros beetle pest attacks cause severe damage to immature and mature plants. They produce an aggregation pheromone identified as ethyl-4-methyloctanoate (E4-MO). Rhinoceros beetles use this pheromone to find suitable habitats for foraging and breeding in the landscape of oil palm plantations. The mass use of pheromone traps has been used to monitor and capture imago stages of O. rhinoceros in the implementation of integrated pest management. Many commercial E4-MO pheromone products have been developed on the market with different packaging designs. The research aimed to determine packaging designs that increase attractiveness and effectiveness in catching rhinoceros beetles. The research was conducted at an oil palm plantation in Indragiri Hulu Regency, Riau. This research was an experimental method. The four design pheromone (permeable sachet, micropore sachet, tube dispenser and double dispenser) were installed in each oil palm planting block (planting area ± 30 ha/block). The number of installations for each design is three units/block with five replications. The assessment of rhinoceros beetle catches was carried out over four months. The results showed significant differences in the catch of rhinoceros beetles. The 4th month of observations showed that the double dispenser packaging design resulted in a higher total catch of rhinoceros beetles, with an average of 161.40. Meanwhile, permeable sachets, microporous sachets, and tube dispensers were 138.20, 139.80 and 91.00 beetles, respectively. Determining the pheromone packaging design is crucial to providing an effective and efficient pest management strategy. 
Potential of Moringa oleifera saponins as a preventive of water pollution from the linear compound alkylbenzene sulfonate (LAS) Sulfa, Devi Mariya; Yusti Amina, Ikramina; Susanto, Hendra
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.666

Abstract

Increasing detergent consumption in society has an impact on increasing the volume of waste, which has the potential to pollute water ecosystems. TOP Brand Data Search for 2021 states that people worldwide are more interested in using detergents to combat stubborn stains. Indonesian industrial companies are increasingly producing chemical-based detergents. The research aimed to describe the potential of Moringa oleifera saponin as an effort to prevent water pollution from the Linear Alkylbenzene Sulfonate (LAS) compound. The research method uses a rotary evaporator with organoleptic tests. The results found in M. oleifera saponin have a distinctive odour from isothiocyanate compounds, yellowish green colour, pH within 25○C (concentrate 6), the active ingredient of saponin (protease enzyme) of M. oleifera leaves was 8.5%, and specific gravity (2.5%) with a concentrate of 1.2. This research shows that the liquid Detergent produced meets Standar Nasional Indonesia (SNI), and the detergent quality was good. The saponin content of M. oleifera was an alternative for industrial companies and a preventive measure for better water ecosystem processing.    
DNA Barcoding of Brevibora cheeya from Bumang River, Bangka Island Lestari, Eva; Almagribi, Siti PNIK; Lindiatika, Lindiatika; Khanati, Olivia; Donalista, Donalista; Anjani, Tiara P; Kurniawan, Andri; Syarif, Ahmad F; Kurniawan, Ardiansyah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.671

Abstract

Brevibora cheeya is a cyprinid fish found in Bangka, Belitung, Sumatra, and Kalimantan. Bangka locals call this fish Seluang. This species is often considered Brevibora dorsiocellata due to its similar morphology. Molecular methods that have never been used for this species on Bangka Island can be used to confirm this species. This study uses COI genes (DNA barcoding) to molecularly identify Brevibora cheeya fish from Bangka Island and analyze their relationships. The sampling process was conducted in Bumang River, Bangka Island, in February 2023, and identification was conducted at the University of Bangka Belitung Biological Laboratory. NCBI BLAST and MEGA 11 were used for data analysis. The results showed that fish samples from Bangka Island have intraspecific genetic relatedness to B. cheeya from Belitung Island, Bangka Island, Central Kalimantan, and South Sumatra, with genetic distances ranging from 0% to 0.9%. The closest genetic relationship to Rasbora dorsiocellata is 3.2%. The phylogenetic tree showed a bootstrap value of 91 for relationships with the Bangka, Belitung, and Central Kalimantan databases and a bootstrap value of 95 for relationships with the Bangka and South Sumatra databases.
Level of efficiency in using rice production inputs in Rainfed Land, Ulak Jeremun Village, Ogan Komering Ilir Regency Yamin, Muhammad; Andelia, Siti Ramadani; Tafarini, Meitry Firdha
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.672

Abstract

High productivity was influenced by optimum production input. Efforts to optimize rice production results include examining the effectiveness of factors that influence rice productivity. This research was useful for providing levels of effective and efficient use of inputs to create efficient use of inputs in rice farming. The research aimed to analyze factors that influence rice productivity, analyze the efficiency of using production inputs in rice farming, and calculate rice farming income. This research was conducted in Ulak Jeremun Village, SP Padang District, Ogan Komering Ilir Regency. The location selection was carried out purposively or deliberately due to the reduction in planting area. Data collection was carried out from August to September 2023. The research method used in this research was the Survey Method. The sampling method used was a simple random sampling method with a total of 60 farmers as respondents. The data used in this research consists of primary data and secondary data. The results of the research show that (1) Factors that have a significant influence on rice productivity in Ulak Jeremun Village are land area, urea fertilizer, and TSP fertilizer. In contrast, those that do not have a significant influence are the dosage of phonska, pesticides, herbicides, fungicides, and the number of workers. (2) The efficiency of production inputs in terms of price for the dose used for seeds and the number of workers was efficient. In contrast, the dose used for fertilizers, insecticides, and pesticides could be more efficient. (3) Rice farming income in Ulak Jeremun Village was IDR 6,940,251 per hectare per year. Income was relatively small because farmers' land was flooded, so many weeds, which cause pests in the fields, were difficult for farmers to control.
Estimation of carbon sequestration of undergrowth and litter in post-burn and unburned peatland in agrosilvofishery demonstration plots, Sepucuk, Ogan Komering Ilir Prayitno, Muh Bambang; Saputra, Bony Dwi
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.673

Abstract

The research aimed to estimate biomass and carbon sequestration in unburned and post-burn peatlands. Data analysis was conducted from January 2023 to February 2023 in Sepucuk Agrosilvofishery Peatland Restoration demonstration plots, Ogan Komering Ilir, South Sumatra. The biomass and litter of understory vegetation were observed in good, medium, and poor vegetation conditions using the destructive method on 0.5 m x 0.5 m observation plots with 3 repetitions, and with 3 repetitions for each vegetation condition. The research depicts that post-burn peatland has a higher average carbon storage of understory vegetation and litter, 1.95 tons/ha for understory vegetation and 0.50 tons/ha for litter. However, unburned peatland has lower average carbon storage, 0.80 tons/ha for understory vegetation and 0.47 tons/ha for litter. The comparison depicts that Purun and Sembangun understory vegetation samples have significantly different results, while the vegetation litter samples have insignificantly different results.
Physical and chemical of soil properties area coffee in Several Banjar Villages, Bangka Regency Santi, Ratna; Khodijah, Nyayu Siti; Cahyani, Siti
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): 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.13.1.1024.674

Abstract

Coffee plants are one of the plantations commodities in Bangka district bisides from pepper and rubber. The area of coffee plantations in Bangka district was 302,879 Ha with total production from 39.05 Ha of 3 tons. The distribution of community coffee plantations was mainly in the villages Riding Panjang, Deniang, Petaling Banjar, Air with coffee production fluctuating every year. Community managed coffee plantations contain some mature plants and some immature plants. Plant growth and production are influenced by soil and climate conditions. The research aimed to determine the physical and chemical characteristics of coffee plants in four Villages of Bangka Regency. The research method uses survey observation measurements in the field and sample analysis in the laboratory. Soil samples were taken using the diagonal random method. Soil samples were taken at each of the 4 location reseach. Soil chemical properties resulting from analysis at the ICBB Bogor laboratory include pH and soil nutrient availability. Soil biophysical observations carried out include soil color, texture, bulk density, soil porosity, drainage,effective rooting depth. Based on the chemical and physical properties analyzed, the soil condition in the coffee planting area was classified as sour with nutriens availability, low cation exchange capacity and a sandy clay loam texture with low porosity.

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