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Jurnal Lahan Suboptimal

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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.

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Search results for , issue "Vol. 8 No. 1 (2019): JLSO" : 12 Documents clear

Analisis Kesesuaian Perairan untuk Keramba Jaring Apung di Kecamatan Sirah Pulau Padang Kabupaten Ogan Komering Ilir Provinsi Sumatera Selatan Rangga Bayu Kusuma Haris; Indah Anggraini Yusanti
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Haris et al, 2019. The Analysis of Water Suitability for Floating Net Sprouts in Sirah Pulau Padang, Ogan Komering Ilir District, South Sumatra Province. JLSO 8(1):20-30.The purpose of this study is to analyze the level of water suitability of the floating net sprouts in sirah pulau padang, ogan komering river, Serdang Menang Village, OKI South Sumatra Regency based on water physical and chemical parameters. This study was conducted on July - August 2018 at the Komering River, Ulak Jermun village, Terusan Menang Village, and Mangun Jaya Village, OKI District, South Sumatra. The data of sampling was divided into 3 stations, they were; station 1 was Ulak Jermun Village (3 Â° 18'45.48 "LS and 104 Â° 53'5.32" BT), station 2 was Terusan Menang Village (3 Â° 17'14.13 "LS and 104 Â° 52'46.78 "BT), and station 3 was Mangun Jaya village (3 Â° 18'14.92" LS and 104 Â° 52'59.48 "BT). The data of Samples were tested at the chemical laboratory in Palembang Public Water Fisheries and Extension Research Institute directly. The results of the study was for Station 1, Station 2, and Station 3 with a value was Â 48% with a good feasibility information. The results of measurements of water quality parameters, the pH was about 6.6 - 6.7, temperature was about from 24., 53 - 26.93oC, DO 3.93 - 4.36 mg / l, ammonia was about 0.78 - 0.16 mg / l, water brightness was about from 34.67 - 43.33 cm, CO2 4.53 - 5.03 mg / l, depth 2.36 - 2.47 m, current velocity was about 0.38 - 0.44 m / s, nitrate was about 0.37 - 0.439 mg / l, phosphate was about 0.009 - 0.225 mg / l and the bottom substrate of water was mud.

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.

Sifat Fisikokimia Zat Pewarna dari Bunga Eceng Gondok (Eichhornia crassipes) yang Diekstrak dengan Metode Microwave Asissted Extraction (MAE) Merynda Indriyani Syafutri; Filli Pratama; Gading Putra Yanda
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

SyafutriÂ et al, 2019. Physicochemical Properties of Colorant from Water Hyacinth Flower (Eichhornia crassipes) Extracted by Microwave Assisted Extraction (MAE) Method. JLSO 8(1):94-106.The objective of this research was to determine the effect of oven microwave power and extraction time on color intensity, anthocyanin stability, and antioxidant activity of colorant from water hyacinth flower (Eichhornia crassipes) extracted by microwave assisted extraction (MAE) method. The research was conducted at Agricultural Product Chemical Laboratory, Agricultural Technology Department, Faculty of Agriculture, Sriwijaya University. The experiment used a Factorial Completely Randomized Design with two factors and each treatment was repeated three times.Â The first factor was oven microwave power (100 watts and 300 watts) and the second factor was extraction time in oven microwave (1 minute, 2 minutes, and 3 minutes). The parameters were color intensity, anthocyanin stability, and antioxidant activity. The results showed that the oven microwave power and extraction time had significant effects on color intensity and antioxidant activity. The increasing of oven microwave power and extraction time increased a* value and antioxidant activity, and decreased b* value, significantly. The result also showed that the anthocyanin compounds was not stable with heating up to 105Â°C.

Populasi Serangga Hama dan Artropoda Predator pada Padi Rawa Lebak Sumatera Selatan yang Diaplikasikan Bioinsektisida dari Beauveria bassiana dan Insektisida Sintetik Khoirul Ikhsanudin Hanif; Siti Herlinda; Chandra Irsan; Tili Karenina; Erise Anggraini; Suwandi Suwandi; Susilawati Susilawati
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Hanif et al, 2019. Population of Pest Insects and Predatory Arthropods Inhabiting Freshwater Swamp Rice of South Sumatra Treated with Bioinsectide of Beauveria bassiana and a Synthetic Insecticide. JLSO (8)1:31-38.Entomopathogenic fungi, Beauveria bassiana, could Â kill various species of insect pests, but Â their impact on predatory arthropods needs to be studied. The aim of this study was to compare population of pest insects and predatory arthropods inhabiting rice sprayed with bioinsecticide of B. bassiana and conventional rice field using a synthetic insecticides. Bioinsecticide was made from conidia of B. bassiana and sprayed on rice canopy. The plot of conventional farmers was sprayed with synthetic insecticides made from Abamektrin. The results showed that the application of bioinsecticide of B. bassiana was not proven to reduce the pest insect population. The abundance of natural enemies of pest insects, such as Â spiders and predatory insects was also more abundant in plots sprayed with Â bioinsecticide than conventional plots that used synthetic insecticide. The synthetic insecticides have been shown to reduce the abundance of predatory insects and spiders. Bioinsecticides containing carrier of Â liquid compost were proven to increase the growth and development of rice, which was an increase in the number of rice tillers per clump in plots applied by bioinsecticide. Thus, B. bassiana of bioinsecticide with liquid compost carrier material was safer and could maintain the abundance of predatory arthropods and increased rice growth.

Pemetaan Status Unsur Hara Fosfor Perkebunan Kelapa Sawit Rakyat di Kelurahan Babat Sumatera Selatan Bagus Iswahyudi; Bakri Bakri
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Iswahyudi et al, 2019.Â Oil Palm Plantationâ€™s Phosporous Mineral Mapping on Babat District South Sumatera. JLSO 8(1):77-85.Â Soil nutrient status mapping was not initiated which lead to inefficiency in fertilization. Fertilizition without nutrient analysis could lead to nutrient deficiency or toxicity of nutrint. The Purpose of this research was to identify, map the nutrient status and fertilization recomendation of phosporous nutrient status in public oil palm plantation at Babat Village Babat Toman Districts Musi Banyuasin District South Sumatera Province. This research used a detailed survey methode with grid system for 16 sample which represent 16 ha and 60 cm depth of soil drilling. Phosporous nutrient status at research location ranged from 4,81 ppm to 21,86 ppm. 7 ha contained 8-20 ppm available phosphorous ot classified into medium, 6 ha contained < 8 ppm available phosphorous or classified into low and 3 h contained >20 ppm available phosporous or classified into high. Soil reaction (pH) of the research field was 5,0 and 5,5 which classify the soil into acid soil. Fertilization implemented to increase the nutrient status until medium (15 ppm) which resulted in SP-36 doses was 346,22 kg/ha for low nutrient status and 139,33 kg/ha for medium nutrient status.

Pertumbuhan dan Produksi Tiga Varietas Unggul di Lahan Rawa Lebak Desa Jambu Ilir Kabupaten Ogan Komering Ilir, Sumatera Selatan Suparwoto Suparwoto
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Suparwoto et al, 2019.Â The Growth and Production Three Rice Superior Varieties in Swampy LandsÂ at the Jambu Ilir Village, Ogan Komering Ilir District. JLSO 8(1):39-46.The assessment was carried out in Jambu Ilir Village, Tanjung Lubuk District, Ogan Komering Ilir Regency, South Sumatra, starting in the dry season of 2018. Varieties exhibited were 2 superior varieties Â and 1 comparative variety, Mekongga. The aim of the study was to obtain information on the growth and production of Inpari 30 and Inpara 8 varieties that were adaptive and had high production on lebak lands. The study was designed by observation method, spacing of legowo 2: 1 (50x25x12.5 cm), seedling age 35 days after seedling, 2-3 seeds / holes. The dosage of fertilizer used is 150 kg Urea, 100 kg SP-36 and 100 kg KCl / ha. The variables observed were: plant height, number of productive tillers, number of grain per panicle, number of filled grains per panicle, and grain yield per ha. The data obtained was arranged in tabulation and analyzed by statistical tests, namely the test of the mean value (test-t). The results showed that the plant height of the varieties exhibited was classified as low to moderate with the number of productive tillers classified as moderate. Inpari 30, and Inpara 8 can adapt well in lebak lands with a production of 5.1-5.3 tons GKP / ha higher than Mekongga as a comparison variety and are highly favored by farmers.

Solubilisasi Fosfat Anorganik oleh Burkholderia spp. pada Rizosfer Kelapa Sawit (Elaeis guineensis Jacq.) di Tanah Mineral Masam Gregorius Baskara Aji Nugraha; Ruli Wandri; Dwi Asmono
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Nugraha et al, 2019.Â Solubilization of Inorganic Phospate by Burkholderia spp. Associated with Oil Palm Rhizosphere in Mineral Acid Soil. JSLO 8(1):86-93.Phosphate Solubilizing Bacteria (PSB) play important role by enhancing phosphate availability bounded with Al3+ orÂ Fe3+ in acidic soils to oil palm plants through release the inorganic phosphate by enzyme or organic acids solubilization. The aims of this study were to isolate of PSB from oil palm rhizosphere and to conduct a comparative analysis of the solubility inorganic phosphates source by selected PSB. The ability of 15 selected PSB to grow and solubilize aluminum phosphate (AlPO4) and iron phosphate (FePO4) was examined and identified. The highest phospate solubilising efficiency showed K3.1 isolate with phosphate solubilization index 3.2 on NBRIP media. Quantitative analysis revealed that isolate K3.1 solubilized 53.52 mg/mL phosphate in 5 days after being inoculated in AlPO4 containing liquid medium, isolate A4 solubilized 63.45 mg/mL phosphate in 5 days after being inoculated in FePO4 containing liquid medium accompanied by a decrease in pH of the growth medium. Based on the 16s rRNA gene sequence analysis, isolate K3.1 and A.4 were closely related to Burkholderia arboris and Burkholderia gladioli. This potential isolates can be used in order to make oil palm crops more sustainable especially on marginal soil with low pH and less dependent on inorganic P fertilizers.Â

Pengaruh Teknologi Pemupukan terhadap Kualitas Tanah, Pertumbuhan dan Hasil Padi Varitas Ciherang yang Ditanam pada Sawah Bukaan Baru di Dusun Kleseleon, Kabupaten Malaka, Nusa Tenggara Timur Sukristiyonubowo Sukristiyonubowo; Damasus Riyanto; Sugeng Widodo
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Sukristiyonubowo et al, 2019. The Influence of Fertilizer Technologies on Soil Quality, Rice Growth and Biomass Production of Ciherang Vareity Cultivated in Newly Developed Lowland Rice Fields of Kleseleon, Malaka District. JLSO 8(1):1-10.Highly weathered and potential acid sulphate soils are granted for newly developed lowland rice. They have many short comings including low in major elements and Fe and Mn in toxic levels. Study on soil fertility, rice growth and biomass productions of Ciherang variety planted in newly developed lowland rice was conducted in Kleseleon Village, Malaka District in 2014. The aim of study was to know the effect of technologies on soil fertility properties, rice growth and biomass productions.The experiment was started in February 2014 and harvested in June 2014. Five promising treatments were studied including: Farmers Practices, Package A : NPK recommended rate + 3 tons compost, Package B : NPK recommended rate + 2 tons compost + Bio fertilizer, Package C: Â¾ recommended rate + 3 tons compost + Bio fertilizer and Package D: NPK recommended rate + 2 tons compost + Bio fertilizer, in which N, P and K were split two times: 50 % given at planting time and 50 % at 21 DAP. Two kilo gram composite soils from five points and ring samples of 0-20 cm in depth were taken in February 2014 for analyzing chemical, physical and biological parameters, before soil ploughing. The results indicated that the soil quality of newly developed low land rice fields in Kleseleon was low. These technologies increased the soil fertility including soil pH, soil organic C, available P and K extracted with HCl 25 %. In addition, the best technology was observed in package B (NPK Recommendation rate + 2 tons organic fertilizer + Bio fertilizer/SMART, in which N and K fertilizer were applied 3 times: 50 % at planting, 25 % at 21 HST and 25% before flowering) for tillers number and rice biomass productions. The yield reached 5.88 Â± 0.29 and 4.84 Â± 0.47 tons ha-1 season-1 for rice grains and rice straw, respectively.

Pemberian Biochar Jengkok Tembakau untuk Meningkatkan Hasil Ubijalar pada Lahan Kering Sub-Optimal Edyson Indawan; Sri Umi Lestari; Nurita Thiasari
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Indawan et al, 2019.Â Increasing Sweet Potato Yield on Biochar Amendment Application on Sub-Optimal Dry Land. JLSO 8(1):47-56.Â Biochar is a soil amendment that can improve soil fertility, increase crop yield and can reduce contamination. This study aim to evaluate the sweet potato response to biochar application from tobacco industry waste. The combination of cultivar and dose of biochar implemented using a Split Plot Experiment Design with three replications. The cultivars placed 0n main plots and biochar doses on sub-plots. The thirteen cultivars covering 7 varieties (Kuningan Putih, Beta 1, Beta 2, Kuningan Merah, Sari, Boko, and Jago) plus six accession from Unitri and Brawijaya University collections (BIS OP-61-OP-22 , 73-6 / 2, 73 OP-8, BIS OP-61, 73 OP-5, and BIS OP-61-â™€-29). The biochar dose used was B0 (0 t / ha) and B1 (5 t / ha). The experimental unit is measuring 5 m x 0.6 m, consisting of single row and planted with a spacing of 25 cm in row or 20 cuttings/row). The storage root numbers, storage root weight, % dry matter, Harvest Index (HI) and yields estimation are ditermined. The results showed that sweet potato cultivars gave a significant response to biochar application on fresh storage root weight, dry storage root weight, biomass dry weight, HI and storage root yields, but no interaction between cultivars and biochar doses. Storage root yield range of 8 - 21 t / ha without biochar and 10 - 23 t / ha with biochar 5 t / ha, except for Beta 1 and Boko. The use of biochar of 5 t / ha can increase storage root yields ranging from 8 - 45%.

Penggunaan Bungkil Inti Sawit dan Enzim Mannanase dalam Ransum terhadap Performa Produksi Telur Puyuh (Coturnix coturnix japonica) Noferdiman Noferdiman; Sestilawarti Sestilawarti; Zubaidah Zubaidah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 1 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Noferdiman et al, 2019. The use of palm kernel meal and mannanase enzyme in diets on the production performance of quails (Coturnix coturnix japonica) . JLSO 8(1):11-19.The objective of the study was to investigate the effect of the levels of palm kernel meal and mannanase enzyme in diets to get the best performance of quails. It was used the 180 female quails in treatment combination using the completely randomized design in factorial arrangement of 2 x 3 with 3 replications. Each unit study consisted ofÂ 10 quails. The treatment consisted of 2 levels of mannanase enzyme, i.e. 0.00, 0.10 % and 3 levels of palm kernel meal additions, i.e. 0, 10 and 20 %. The results of the study showed that the use of mannanase enzyme and palm kernel meal and their interaction were no significant (P>0.05) affected feed consumption, eggs production, feed conversion, egg weight, egg shell thickness, and haugh unit (HU). The use of mannanase enzyme highly significant (P<0.01) affected on eggs production and feed conversion however there were no interaction between the treatments. It was concluded that the addition of 0.10 % of mannanase enzyme in diets consisting 20% palm kernel meal can improve the performance egg production of quails.

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Sabri Sudirman

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sabrisudirman@unsri.ac.id

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Kab. ogan ilir,

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INDONESIA