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Jurnal Lahan Suboptimal

jlso
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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 323 Documents

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Analisis Neraca Air dalam Ketersediaan Air Terhadap Perubahan Iklim di Beberapa Sub DAS Musi Puspitahati Puspitahati; Edward Saleh
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 6 No. 2 (2017): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Puspitahati et al, 2017. Analysis of Water Balance in Water Supply Against Climate Change in some Sub-Watersheds Musi. JLSO 6(2):192-202.Â Rainfall and land cover in the Musi Sub-watershed affect water availability. Both of these components are inputs from the water balance which will affect fluctuations and water level so that it will affect evapotranspiration, run off, and flowrate. The purpose of the study was to determine how the effects of climate change on water availability in the Sub-watershed of Musi Watershed. This study was focus on four Sub-watersheds contained on the Musi river basin, namely Musi Sub-watershed, Komering Sub-watershed, Ogan Sub-watershed and Lematang Sub-watershed. This research was conducted at the Laboratory of Soil and Water Engineering, Department of Agriculture Technology, Faculty of Agriculture, Sriwijaya University from September 2013 to January 2014. Methods used in this research were descriptive method, the study of literature and secondary data taking, while the analysis was done with tabulation and graphs. The conclusion were 1) The availability of water was affected by changes in rainfall, population growth, and land cover types, 2) The highest rainfall was in Komering Sub-watershed equal to 105.23 mm/month, the highest run off was in Komering Sub-watershed equal to 33.67 mm/month, while the highest of evapotranspiration was inÂ Lematang Sub-watershed equal to 121.69 mm/month. Thus, we can find out how the effects of climate change on water availability in sub-watersheds in the Musi River Basin.

Pertumbuhan Bibit Karet Okulasi Berbagai Umur pada Media Tergenang Holidi Holidi; Etty Safriyani; Sutejo Sutejo
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 2 No. 2 (2013)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Luas areal lahan kering untuk budidaya perkebunan yang terbatas sehingga lahan rawa yang tergolong lebak dangkal menjadi alternatif untuk tempat budidaya perkebunan karet. Adaptasi tanaman karet terhadap genangan perlu diteliti. Penelitian ini bertujuan mengkaji respon pertumbuhan berbagai umur bibit karet dari stum mata tidur terhadap tinggi genangan air. Penelitian ini dilaksanakan di kebun percobaan Fakultas Pertanian Universitas Musi Rawas pada ketinggian 110 m dpl pada bulan Maret sampai Juni 2012. Penelitian ini menggunakan Rancangan Petak Berbagi (RPB) dengan tiga kali ulangan, tinggi genangan sebagai petak utama dan umur bibit sebagai anak petak. Perlakuan tinggi genangan (petak utama) terdiri dari tanpa genangan, genangan tinggi 5 cm, 15 cm dan 25 cm. Genangan diberikan selama 3 bulan. Perlakuan umur bibit terdiri dari 2 level, yaitu 3 bulan dan 5 bulan. Hasil penelitian menunjukkan bahwa bibit tanaman karet dapat bertahan hidup 3-12 minggu tergantung tinggi genangan

Penggunaan Melati Air (Echinodorus palaefolius) sebagai Filter Biologi pada Pemeliharaan Ikan Maanvis (Pterophyllum scalare) Kezia Agustine Riyadhi; Dade Jubaedah; Marini Wijayanti
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Riyadhi et al, 2019.Â The Using of Water Jasmine (Echinodorus palaefolius) as Biological Filter on Angelfish (Pterophyllum scalare)Â Rearing. JLSO 8(1):67-76.Â Water quality was one factors that become a contraint in ornamentalfish culture. This study aimed to compare the result ofÂ jasmine water as a biological filter in maintaining water quality and reducing organic matter in the rearing of angelfish with a recirculation system. This research was conducted for 28 days at the Basic Laboratory ofÂ Aquaculture, Departement of aquaculture, Universitas Sriwijaya. The research Used a completely randomized design with 5 treatments and 3 replications. The results showed that water qualityÂ ofÂ the temperature, pH, dissolved oxygen, ammonia, nitrat and Â phosphate values was (27.2-29.2ÂºC), (5.7-6.9), (4.68-5.74 mgL-1), (0.005-0.037 mgL-1), (0,06-0,12 mgL-1) and ( 0.013-0.107 mgL-1). In treatment P0 the lowest fish survival was 44.45%, absolute length growth was 1.56 Â± 0.26 cm, absolute weight growth was 1.47 Â± 0.34 g, feed efficiency was 40,54 Â± 2,54. While in treatment P4 the highest survival was 72.22%, absolute length growth was 1.24 Â± 0.17, absolute weight growth was 1.25 Â± 0.24 g feed efficiency 51.32 Â± 13. The survival rate of angelfish in the treatmentÂ without using water jasmine showed the lowest percentage of survival compared to other treatment.

Penurunan Kadar Besi dan Mangan Terlarut dalam Air Payau Melalui Proses Oksidasi Menggunakan Kalium Permanganat J.M. Amin; D.P. Sari
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 4 No. 1 (2015): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

The main objective of this research is to reduce the content of iron and manganese dissolved in brackish water as part of the treatment process into clean water. In the early stages, brackish water was coagulated and sediment using PAC 150 ppm. The water is then sent to the unit with KMnO4 oxidation accompanied by stirring. KMnO4 concentration varied three types namely 3.5 ppm, 4.5 ppm, 5.5 ppm. Water analysis is carried out on the raw water and any results of coagulation and sedimentation, until the result of oxidation. Based on the experiments, the best results obtained from using KMnO4 oxidation of 4.5 ppm to lower the Fe content of 1.43 ppm to 0.28 ppm and lower levels of Mn from 0.35 ppm to 0.15 ppm. Coagulation and sedimentation process was instrumental in improving the quality of brackish water, especially in color, taste, pH, and dissolved solids turbidity eligible clean water. Coagulation and sedimentation are also less able to reduce levels of dissolved Fe and Mn. Two stages of treatment (coagulation and sedimentation and oxidation) has been successfully boost water quality and filtration will ease the workload on subsequent processing stages

Pemanfaatan Sari Timun untuk Mengurangi Tingkat Stres dan Meningkatkan Kelangsungan Hidup Pascalarva Udang Vaname (Litopenaeus vannamei) selama Masa Penurunan Salinitas Ferdinand Hukama Taqwa; Marsi Marsi; S. Haris
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 5 No. 1 (2016): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Taqwa et al, 2016.Â The Using of Cucumbar Extract to Reduce the Stress Level and Increase the Survival Rate of White Shrimp Postlarvae (Litopenaeus vannamei) during Salinity Decreasing Time. JLSO 5(1):53-61.The purpose of this study was to evaluate the effect of adding cucumber extract on the level of stress and survival of white shrimp postlarvae during acclimatization. The method used was completely randomized design with five treatment and three replication of adding cucumber extract that equal 15 ppm (T1), 30 ppm (T2), 45 ppm (T3), 60 ppm (T4) and without adding cucumber extract (T0) as a control. The results showed that addition of cucumber extract equivalent to 15 ppm (T1) in diluents media during 96 hours of acclimatization produce survival 91.67%, body fluid glucose levels are lower at 161.67 mg dl-1 and consumption level of oxygen 4.39 mg O2 g-1 h-1. Physical chemistry value of media acclimatization still in tolerance except in ammonia

Karakteristik dan Kemelimpahan Nepenthes di Habitat Miskin Unsur Hara Mardhiana Mardhiana; Yakup Parto; Renih Hayati; Dwi Putro Priadi
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 1 (2012)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Mardhiana et al., 2012.Â The Characteristics and Abundance of Nepenthes of Nutrient-poor Habitats. JLSO 1(1):50-56.This research aimed at assesing the characteristics and abundanceof Nepenthespopulation in nutrient-poor habitats. This study was conducted at two locations, Talang Kelapa village, Banyuasin Km 10, and Pasir Putih village, Sukajadi, Banyuasin Km 18. Observations were made onÂ the soil chemical and physical properties, morphologyÂ and population abundanceÂ of Nepenthes. The result showed Â that N. mirabilis was the only species found in Â Talang Kelapa and Pasir Putih.Â Nepenthes upwere able to grow well in very poor soil nutrients. Natural habitat in Pasir Putih with sandy soilÂ and water log condition gave better effect on the morphology and abundance in than in Talang Kelapa withÂ clay soil and dry.Â The ratio of Â Nepenthes abundance in Pasir Putih to that in Talang Kelapa was 3:2.Â

Kelayakan Usahatani Padi Varietas Unggul Baru di Sawah Tadah Hujan Kabupaten Ogan Komering Ilir Provinsi Sumatera Selatan Maya Dhania Sari; Harnisah Harnisah; Suparwoto Suparwoto
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 6 No. 2 (2017): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Dhania Sari et al, 2017. Farm System Feasibility of New Prime Variaty in Rained Rice Field in Ogan Komering Ilir Regency South Sumatera Province. JLSO 6(2):120-125.Economic feasibility is farmersâ€™ main consideration in implementing technology innovation in their rice farming business. The increase of farmersâ€™ revenue can be obtained through the production improvement, and through the use of New Prime Variety which is one of the technology component that is able to increase rice production. Rainfed rice field in Ogan Komering Ilir (â€˜OKIâ€™) Regency which covers 9,397 hectares is potential for further production optimality. This study aims to understand the revenue of rice farming business through the use of New Prime Variety in Rainfed Rice Field, and also to understand financial feasibility of New Prime Variety rice farming business in OKI Regency. The study method was undertaken by Plot Demonstration in Cahya Maju Village, Lempuing Sub District, OKI Regency in April - June 2016 for 2 hectares area. The data consists of primary and secondary data. The technology was implemented with Inpari 15, Inpari 20, Inpari 22, Inpari 27, Inpari 29, Inpari 30 Variety, and with Ciherang Variety as a comparison and also with the integrated plant management. The data analysis method is using tabulation and financial analysis. The study result shows that Inpari Variety has the highest financial gain with IDR 31,254,000. Economic wise, all varieties are financially feasibile, which is shown by the R/C ratio > 1.

Aplikasi Cycocel dalam Pengendalian Getah Kuning Buah Manggis (Garcinia mangostana L.) pada Lahan Kering Irianto Irianto; Budiyati Ichwan; Mapegau Mapegau
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 2 No. 2 (2013)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

The aim of this experiment was to gain the accurate concentration of cycocel growth for controlling of yellow latex mangoesteen in different age level on field water stress.Â This experiment was conducted in Koto Patah village, Keliling Danau, Kerinci, Jambi and was done from June until November 2011 at the altitude of 800 - 900 meter above sea level. Factorial experiment was arranged in a randomized block design. The first factor was cycocel concentrations: 0; 1.500; 3.000; 4.500; dan 6.000 mg L-1.Â The second factor was levels of age plants: <30; 30-50; and >50 years.Â The data were analyzed by using analysis of variance and continued with BNT test at Î±=5%.Â The results of experiment showed that: (1) the impact of cycocel on number and weight of perfect fruits depended on the age of manggoesteen; (2) manggoesteens which were less than 30 years old and treated with 4.500 mgL-1 cycocel could increase number and weight of perfect fruits; (3) manggoesteens which were older, 30-50 years old and above 50 years old needed less cycocel namely 1.500 mgL-1 for increasing number and weight of perfect fruis.

Evaluasi Kualitas Fisik dan Uji Palatabilitas Ransum Berbasis Rumput Kumpai Tembaga (Hymenachne acutigluma) Melalui Kombinasi Lumpur Sawit dan Daun Ubi Kayu Riswandi Riswandi; Basuni Hamzah; Agus Wijaya; Arfan Abrar; M. Reski Valian Akbar
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Riswandi et al, 2018. Physical Quality Evaluation and Palatability of (Hymenachne acutigluma) through Combination of Palm Oil and Cassava Leaves. JLSO 7(2):204-212.Â The aim of this study to investigate the physical quality and palatability based feed Hymenachne acutigluma which is combine cassava leaves and palm oil as animal feed.Â This reseachÂ Â was done in 3 months in Cattle Nutrition and Feed Laboratory and Livestock Experiment Studies Program Faculty of Agriculture, University of Sriwijaya.Â This reseach used completely randomazed design method with 4 treatments and 4 replications.Â The treatment consisted of R0 (85% Hymenachne acutigluma + 15% concretate), R1 (55% Hymenachne acutigluma + 30% cassava leaves + 15% concrentate), R2 (55% Hymenachne acutigluma + 30% palm oil + 15% concentrate), R3 (55% Hymenachne acutigluma + 15% cassava leaves + 15% palm oil + 15% concentrate).Â The observed variabels are smell, water ration, density and palatability of feed consisted.Â The results showed thet the treatment had significant effect (P<0.05) on density of the ration and had no significant effect (P>0.05) on the smell and the water content of the feed.Â The result of the palatability rations show thet the treatment of R1 is the most favored by the livestock.Â The conclusion of this reseach is indicate that the combination 55% Hymenachne acutigluma + 30% cassava leaves + 15% concrentate can improve the physical quality and palatability.Â

Kajian Pola Tanam dan Pola Pemupukan Padi Rawa di Lampung Junita Barus; Bariot Hafif
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 3 No. 2 (2014)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Swamp land in Lampung area of 544,305 ha, which spread out in several districts, where a potential for planting rice paddy field area of 410,177 ha. The pattern cultivation especially fertilization also different from each other in each type of land swamp and a specific location, so have an effect on yield. This study had done by the method survey and interviews farmers by using a questioner. Location interview was in three districts that have land swamp area in Lampung, namely Tulang Bawang District (Sub District: Rawa Jitu Selatan, Rawa Pitu, and Penawar Aji); Mesuji District (Sub District: Mesuji Timur and Mesuji); and Lampung Selatan District (Sub District: Rawa Sragi). The number of respondents 15 farmers per sub-district, so the total respondents were 90 farmers. The data were obtained then tabulated and analyzed descriptively. Most of the farmers used these wetlands for rice farming, but only 50% can be used for double cropping of rice per year. The dose of fertilizer farmers applied both urea and NPK Ponska / SP-36 lower than recommended dosage according to Permentan Regulation No. 40 of 2007 (Urea 175 kg + 200 kg Ponska NPK + 25 kg SP-36 + 50 kg KCl). Average rice yield was obtained according to the results of interviews 4.34 t/ha in MT I and 2.5 t/ha in MT II.

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Sabri Sudirman

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