Jurnal Lahan Suboptimal
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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<![CDATA[Characteristics and Management of Peatland for Agricultural Development ]]>
<![CDATA[N.P. Sri Ratmini]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.26
<![CDATA[Ratmini, 2012. Characteristics and Management of Peatland for Agricultural Development. JLSO 1(2):197-206 The potential of peatland as agricultural land has area of about 6 M ha. The utilization of peatland in agriculture need detail and thorough planning, adequate technology application, and proper land management because its marginal and fragile ecosystem. Peatland is vulnerable to land degradation, namely physical degradation (subsiden and irreversible drying) and chemical degradation (nutrients deficiency and nutrients toxicity). The peatland development has obstacles such as highly content of organic acids. The effect of organic acid toxicity can be reduced by water (irrigation technology) management and adding ameliorant which rich of polivalent cation such as Fe, Al, Cu, and Zn. Soil amendment and fertilization in peatland farming can be done to reduce nutrients deficiency.]]>
<![CDATA[Aplikasi Isolat Bakteri Hidrokarbonoklastik asal Rizosfer Mangrove pada Tanah Tercemar Minyak Bumi ]]>
<![CDATA[Nuni Gofar]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.17
<![CDATA[Gofar. 2012. Application of Hydrocarbonoclastic Bacteria Isolates from Mangrove Rhizosphere on Petroleum Polluted Soil. JLSO 1(2):123-129.This research was aimed at studying the ability of hydrocarbonoclastic bacteria to reduce total petroleum hydrocarbon of petroleum polluted soil. The hydrocarbonoclastic bacteria were isolated from rhizosphere of mangrove grown on petroleum contaminated soil in Sungsang, Sumatra Selatan. The samples were taken using a defined sampling method from the oil contaminated areas. Soil samples around the roots of mangrove plants were randomly taken in the contaminated    area.  Isolates obtained from the isolation and selection of bacteria from mangrove forests were overhauled at the laboratory-scale using oil-enriched medium following a completely randomized design. Nine isolates of hydrocarbonoclastic bacteria were found to be capable of growing on petroleum contained medium in vitro. Two best isolates in degrading petroleum hydrocarbon compound were Pseudomonas alcaligenes (I5) and Alcaligenes facealis (I8). P. alcaligenes and A. facealis were able to decrease TPH up to 63% and 70% respectively. The ability of these isolates in degrading hydrocarbon compound was 6.5-7.0 times higher than the control. ]]>
<![CDATA[Resistance of Several Varieties of Non-Tidal Lowland Paddy to Sheath Blight Disease Caused by Rhizoctonia solani ]]>
<![CDATA[A. Muslim]]>;
<![CDATA[Rinda Permatasari]]>;
<![CDATA[A. Mazid]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.22
<![CDATA[Muslim et al. 2012. Resistance of Several Varieties of Non-Tidal Lowland Paddy to Sheath Blight Disease Caused by Rhizoctonia solani. JLSO 1(2):163-169. The use of high yielding varieties has increased paddy yields in non-tidal lowlands. However, paddy productivity often decreases due sheath blight disease caused by Rhizoctonia solani. The objective of this study was to determine some non-tidal swamp rice varieties that are resistant to sheath blight. Response of paddy varieties to sheath blight  was evaluated in the screen house using micro-chamber screening method, with paddy variety as treatment. Each treatment consisted of five varieties of paddy: Inpari13, Indragiri, Mekongga, Inpara3 and Ciherang. The result showed that all of the varieties were infected by R. solani.The lowest level of severity occurred in Inpara 3 with the average score of 38.88% whereas the highest severity occurred in Indragiri varietiy with the average score of 59.34%. Based on resistancy, none of the varieties tested showed resistant response. Moderately resistant response to sheath blight was indicated by Inpara 3, Mekongga, Ciherang (disease index 3.5-4.0); whereas susceptible response was demonstrated by Inpari 13 and Indragiri (disease index 5.3-5.5). The average incubation period of the pathogen R. solani on Inpari 13, Indragiri and Mekongga was four days, Ciherang was five days and Inpara 3 was six days. Therefore, none of the five varieties of non-tidal lowland paddy tested in this reasearch was resistant to sheath blight disease caused by R. solani.]]>
<![CDATA[Produktivitas dan Ketahanan Galur Harapan Padi terhadap Penyakit Tungro di Sumatera Selatan ]]>
<![CDATA[Tumarlan Thamrin]]>;
<![CDATA[Imelda Suryani Marpaung]]>;
<![CDATA[Syahri Syahri]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.18
<![CDATA[Thamrin et al. 2012. Productivity and Resistancy of the Tungro-resistant Rice Variety in South Sumatra. JLSO 1(2):130-137. The establishment of new varieties is required to have the advantage of being more diverse and specific according to agroecosystem, problems in the field, the specific location and consumers’ preference. Prior to its establishment, a tungro-resistant rice variety needs to be tested locally. This research was carried out on the rain-fed rice field at the village of Lubuk Seberuk Sub-district Lempuing, Ogan Ilir Komering Regency (OKI)  in 2009. This research employed randomized block design (RGD) with 10 treatments consisted of eight strains and two improved varieties as a comparison. Each treatment was repeated 3 times. The results indicated that strain B-10018G-TB-42-1 has the least tungro attacks and the highest number of tillers and production compared to the other strains and varieties.]]>
<![CDATA[Study on the Biological Characteristics of Pegagan Duck ]]>
<![CDATA[Meisji L. Sari]]>;
<![CDATA[R.R. Noor]]>;
<![CDATA[Peni S. Hardjosworo]]>;
<![CDATA[Chairun Nisa]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.23
<![CDATA[Sari et al. 2012. Study on the Biological Characteristics of Pegagan Duck. JLSO 1(2):170-176. Pegagan duck is one of the local genetic and biodiversity resources in South Sumatera which needs to be conserved and developed. So far, scientific data of Pegagan duck as a biodiversity resource were relatively limited compared to other local ducks. The aim of this experiment was to investigate and identify egg variability of Pegagan duck. This experiment started by collecting 500 Pegagan’s egg from three districts, namely Tanjung Raja, Inderalaya and Pemulutan, Ogan Ilir Regency, Sumatera Selatan. Collected eggs were cleaned with lysol 2.5% prior to putting into the hatching machine. During hatching process, the eggs were rolled up and down from the 3th d until the 25th d. Egg candling was done three times: day 5, day 13 and day 25. The results showed that initial weight of parent (G0) male and female Pegagan duck was 36.87 g and 36.73 g, respectively. Meanwhile, F1 generation was 36.90 g for male and 37.09 g for female. The growth pattern between male and female duck was relatively the same. Growth curve which showed the relationship between body weight and age of duck formed a sigmoid curve. The growth differences between male and female duck occured at the 5th week. Body weight of male duck was higher than female duck. The highest body weight found at the inflexion point for both male and female duck for parent (G0) was at the 4th week and for F1 was at the 5th week. At the first laying, the body weight of Pegagan duck for parent (G0) reached 1541.17±132.19 g, whereas for F1 reached 1605.34±167.19 g. Parent (G0) and F1 of Pegagan duck layed at the average age of 153 and 154 d, wherein 30% layed at the age of < 151 d and 60% at the age of 151-170 d.These results were expectedly become database and guidance for the conservation and sustainable development of pegagan duck.]]>
<![CDATA[The Response of Rice (Oryza sativa L.) to Organic Fertilizer Plus and Organic Pesticides under the System of Rice Intensification (SRI) in Tidal Lowlands ]]>
<![CDATA[Neni Marlina]]>;
<![CDATA[Eko Adi Saputro]]>;
<![CDATA[Nurbaiti Amir]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.19
<![CDATA[Marlina et al. 2012. The Response of Rice (Oryza sativa L.) to Organic Fertilizer Plus and Organic Pesticides under the System of Rice Intensification (SRI) in Tidal Lowlands. JLSO 1(2):138-148. This study aims at evaluating the response of rice (Oryza sativa L.) to the dosage and type of organic fertilizer plus and organic pesticides under the System of Rice Intensification (SRI) in tidal lowlands. This research was implemented at the rice field Desa Tanjung Sari, Kecamatan Tanjung Lago, Kota Terpadu Mandiri  (KTM) Telang, Kabupaten Banyuasin. The research was conducted from December 2010 until March 2011. It employedFactorial Group Randomized Design (RAK) to allow each factor were repeated 3 times for 5 plant samples. Variability analysis indicates that the provision of the dosage of organic fertilizer plus provided significant  effect on plant height, the number of seedlings, the number of productive seedlings, grain per panicle, production, and the percentage of infestation. However, it did not show significant  effect on the percentage of empty grains. The provision of organic pesticides provided significant effect on grain per panicle, production, the percentage of pests, but gave no effect on plant height, the number of seedlings, the number of productive seedlings, and the percentage of empty grains. The combination of powdered organic fertilizer plus of  750 kg / ha and  organic pesticides (animal and vegetable pesticides) gave  the highest production of 2.23 kg/plot or 5.57 ton/ha.]]>
<![CDATA[Bamboo Floated-cultivation Model for Upland Kangkong (Ipomoea reptans Poir.) in Tidal Lowland Area ]]>
<![CDATA[Siti Masreah Bernas]]>;
<![CDATA[Alamsyah Pohan]]>;
<![CDATA[Siti Nurul Aidil Fitri]]>;
<![CDATA[Edi Kurniawan]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.24
<![CDATA[Bernas et al. 2012. Bamboo Floated-cultivation Model for Upland Kangkung (Ipomoea reptans Poir.) in Tidal Lowland Area. JLSO 1(2):177-185. South Sumatra Province has a high potential of swampland for expansion of floating agriculture system. Swampland in Palembang, for instance, can be adapted for floating vegetable cultivation. The experiments on floating agricultural system have been done by using wasted plastic glass, bamboo for rice and glutinous rice with the application of Hycinth and water Fern compost. The purpose of this research was to build bamboo rafts which were suitable for growing kangkong (Ipomoea reptans). Previous rafts which contained water saturated soil for rice growing needed to be adjusted for kankong cultivation which prefer unsaturated soil. Two bamboo rafts were built using four plastic containers in bottom corners.The first raft was filled with soil plus compost (ratio 1:1) and the other was filled only with swamp soil. Kankong seeds were planted with the distance of 25 cm by 25 cm. Data were collected weekly and analysed statistically using t-test. Results showed that when the rafts were supported by two bamboos, plants were died due to excessive water. Plants grew well after the rafts were supported by plastic containers.  Composting significantly increased plant height, number of leaves, plants fresh and dried weight. Plant height treated with compost was 38 cm compared to that without compost treatment which was 28 cm. Fresh plant weight was 149 g/bunch with compost treatment and 25 g/bunch without. Thus, low fertility of swamp soil only required compost to increase nutrients content for plant growth.This research concluded that plant can be cultivated cheaply and environmentally safe in swampland. Further experiments such as replacing plastic container in raft construction and growing other vegetables on the raft were proposed.]]>
<![CDATA[Aplikasi Ekstrak Kompos Meningkatkan Hasil dan Menekan Penyakit Padi Sistem Ratun di Sawah Pasang Surut Kabupaten Banyuasin ]]>
<![CDATA[Suwandi Suwandi]]>;
<![CDATA[Muhammad Ammar]]>;
<![CDATA[Chandra Irsan]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.15
<![CDATA[Suwandi et al. 2012. Application of Extract Compost Increased Yield and Suppressed the Diseases of Ratoon Rice Crop in Tidal Swamp of Banyuasin Regency. JLSO 1(2):116-122.A field study was conducted to test the effects of the biofertilizer preparations on yield and diseases of ratoon rice crop in the reclaimed tidal swamp of Telang II, Banyuasin Regency of South Sumatra. The biofertilizer were prepared either as dormant inoculant in liquid formulation or active inoculant in compost extract. Both preparations contain chitinolytic, cellulolytic and phosphate solubilizing bacterial community. The result showed that the yield of ratoon crops of Ciherang rice variety in the suboptimal land increased by 67% (923 kg/Ha) in response to single spraying of the compost extract. The ratoon sprayed with the compost extract had a lower incidence of neck blast and panicle blight and produced less empty grains compared to non-sprayed control. The application of extract compost appears to be a feasible method for increasing production of ratoon rice in tidal swamps.]]>
<![CDATA[Suitability of Tidal Swamp for Rubber Plantation in Three Villages of Ex Rice Mega Project, Pulang Pisau Regency, Central Kalimantan Province ]]>
<![CDATA[M. A. Firmansyah]]>;
<![CDATA[N. Yuliani]]>;
<![CDATA[W.A. Nugroho]]>;
<![CDATA[A. Bhermana]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.20
<![CDATA[Firmansyah et al. 2012. Suitability of Tidal Swamp for Rubber Plantation in Three Villages of Ex Rice Mega Project, Pulang Pisau Regency, Central Kalimantan Province. JLSO 1(2):149-157. Since 1920, tidal swamp has been widely developed for rubber plantation. Land rehabilitation of ex Mega Rice Project has attracted local community to cultivate the land for rubber plantation. The purpose of this research was to determine land suitability classification for rubber in tidal lowland areas located in three villages (Anjir Pulpis, Jabiren, and Sigi) in Pulang Pisau Regency wherein several types of soil were found, namely Sulfaquept, Endoaquepts, Dystrudept, and Haplohemist. The results indicated that there were several limiting factors to rubber plantation in tidal lowland, i.e. rooting condition, toxicity, nutrient retention, and peat land fire hazard. Actual land suitability classification felt into not suitable (N1) except Dystrudept of Jabiren which was classified as marginally suitable (S3). Improvements to overcome these limiting factors were required up to medium-high level. Low improvement level might not enhance land suitability class. Medium improvement level enhanced marginally suitable (S3) to moderately suitable (S2). Whilst, for high management level, it could enhance moderately suitable (S2) to highly suitable (S1). However, the development of tidal lowland for rubber plantation needed support from the government, especially the costly improvement of poor drainage system.]]>
<![CDATA[The Improvement of Rice Postharvest Technology in Sub-Optimal Land ]]>
<![CDATA[Hasbi Hasbi]]>
<![CDATA[ Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012) ]]>
Publisher : <![CDATA[Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya ]]>
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DOI: 10.33230/JLSO.1.2.2012.25
<![CDATA[Hasbi. 2012. The Improvement of Rice Postharvest Technology in Sub-Optimal Land. PLSO 1(2):186-196. Rice is the most exerted food crop commodity in Indonesia. Rice production has continuously been increased in order to support food security policy. Improvement of cultivation technology has been proved to increase rice production significantly. Increase in rice production should be followed by the improvement of rice quality based on the standard and consumer preference. The improvement in quality may also be enhanced by proper postharvest technology. Improvement of rice quality will result in more added value on rice. Therefore, proper technology which includes production, harvest, and post harvest should be done in an integrated manner in order to increase rice quality and at the same time decrease weight loss. Rice postharvest technology consists of harvesting, threshing, transportation, drying, cleaning and storage. These postharvest activities are often followed by rice milling. However, farmers awareness and knowledge regarding proper postharvest technology are lacking and its application is considered low. Improvement of postharvest handling technology should be prioritized to include three stages, which are harvesting, threshing and drying due to high loss occured in these stages. The improvement of harvest and postharvest technologies should incorporate human resource ability and information dissemination based on the principles of Good Handling Practices (GHP).]]>
