Jurnal Lahan Suboptimal
Published by Universitas Sriwijaya
ISSN : 22526188     EISSN : 23023015
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.
Articles 12 Documents
Search results for , issue " Vol 3, No 1 (2014)" : 12 Documents clear
Tingkat Parasitisasi dan Deskripsi Parasitoid yang Memarasit Aphis gossypii (Glover) (Hemiptera: Aphididae) Asal Agroekosistem Dataran Rendah dan Dataran Tinggi Sumatera Selatan Riyanto, Riyanto; Herlinda, Siti; Umayah, Abu; Irsan, Chandra
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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Abstract

The parasitic level research and description of the parasitoid species which were parasitic towards Aphis gossypii (Glover) (Hemiptera : Aphididae ) origin the agroecosystem of the lowland and highland of South Sumatra has not been reported, although this information is needed as a foundation of biological control of A. gossypii in South Sumatra. The purpose of this study was to determine the parasitic level and provide information about the description of the parasitoid which were parasitic towards A. gossypii origin the agroecosystem of the lowland and highland of South Sumatra. Survey and exploration the parasitoid which were parasitic towards A. gossypii conducted at 11 sites in South Sumatra vegetable center.  The identification of parasitoid species was conducted in the laboratory of Entomology Department of the Faculty of Agriculture University of Sriwijaya. The results showed the parasitic level of Aphidius sp. and Diaeretiella rapae was higher during the dry season in both lowland and highland compared to the parasitic level of Aphelinus sp. However, Aphelinus sp. could only spread in the lowland. The main characteristics of Aphidius sp. (Aphidiidae) has shaped antennae filiform and segmented 13. The front wings have a triangular pterostigma. D. rapae, (Aphidiidae) has shaped antennae filiform and segmented 14. The front wings has a triangular pterostigma. The hind wing has a perfect basal cells. Aphelinus sp. (Aphelinidae) has an shaped goblets antennae and eight segmented and the last segments three of the antennae enlarged or club. Marginal venation long wings, while the venation postmarginal and stigma reduction. In addition there are two species of hyperparasitoid which were found to be parasitic towards parasitoid A. gossypii, were Ooencyrtus sp. and Aphiidencyrtus sp. (Encyrtidae) especially in the lowland.
Pengendalian Pecah Kulit Buah Duku (Lansium domesticum Corr.) dengan Kalsium Karbonat pada Lahan Suboptimal Ichwan, Budiyati; Mapegau, Mapegau; Irianto, Irianto
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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The broken skin on fruit was the main problem on quality of duku. The availability of calcium on soil presumable having an effect on broken skin on fruit of duku. A field experiment to evaluated the effect of calcium in controlling the broken skin on fruit of duku was carried out in Kumpeh Ulu, Muaro Jambi, Jambi from Januari 2009 through to Februari 2010. The experiment was conducted on suboptimal land with soil acidity is 4.97 (pH H2O). Randomized Completely Block Design was used with 3 replications. The treatments consisted of 4 calcium carbonat doses i.e. 0 ton/ha, 1.0 ton/ha, 1.5 ton/ha and 2.0 ton/ha. The result showed that calsium carbonat doses decresing percentage of broken skin on fruit of duku and increasing concentration of hemicelluloce on fruit skin and fresh weight of fruit, calcium carbonat dose 2 ton/ha gave the lowest percentage of broken skin and the highest hemicelluloce concentration on fruit of duku. The highest of fresh weight of fruit at calcium carbonat dose 1 ton/ha.
Analisis Konstribusi Pendapatan Usahatani Kelapa Dalam pada Perkebunan Rakyat di Tipologi Lahan Pasang Surut Provinsi Sumatera Selatan Purba, Yudhi Zuriah Wirya
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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This study aims to analyze the revenue comparison monoculture with polyculture farming patterns and the contribution of small holder coconut farming on the household income of families in tidal lowlands type A and B. The study was conducted in Banyuasin and Ogan Ilir Districts where tidal lowland is always inundated. Sample farmers were withdrawn usingproporsionate stratified random sampling. The number of sample were 120 farm house holds monoculture and polyculture farming patterns. The results showed that the income from monoculture and polyculture farming patterns was not significantly different. The coconut farm income in both monoculture and polyculture patterns made major contribution to the household income.
Aplikasi Bioinsektisida Berbasis Jamur Entomopatogen Terhadap Penggerek Batang Padi Daerah Pasang Surut Sumatera Selatan Khodijah, Khodijah
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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Population and the intensity of the rice stem borer attack can influence pesticide application. This study aimed to examine the effect of active ingredient formulation of solid and liquid Beauveria bassiana bioinsecticide to control rice stem borer (PBP). The research was conducted in tidal lowland rice cultivation in the Village Mulya Sari Banyuasin Regency, South Sumatra, from Maret 2012 to Juni 2012. Observations of population and intensity of attacks observed directly on the rice clump clump as many as 80 samples per ha. The results showed that the application of liquid and solid bio insecticide with active entomopathogenic fungi material effected on the population, the intensity of PBP larvae attack. The results showed that the application of liquid and solid bio insecticide with entomopathogenic fungi active material in the tidal land effect on the population, the attack intensity of PBP larvae. The results found that in tidal land application of liquid bio insecticide could suppress the population aged 10-40 dap of PBP approximately 75%, and solid and bio insecticide approximately 37.5%. Application of liquid bioinsecticide could suppress population aged 50-80 dap of PBP approximately about 55%, and solid bioinsecticide could suppress larval populations of PBP approximately 40%. Liquid bioinsecticide applications could reduce attack intensity PBP of rice plants aged at 10-40 dap approximately 81.75% and approximately 55.44% for solid bioinsecticide. At age 50-80 dap rice, liquid bio insecticide could reduce attack intensity of PBP about 70%, and applications of solid bioinsecticide approximately 60%.
Kecernaan Jerami Padi Yang Disuplementasi Zn Lysinate dengan Teknik In Vitro Muslim, Gatot; Fariani, Armina; Abrar, Arfan
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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This study was conducted to determine the digestibility of rice straw that supplemented with Zn Lysinate by  in vitro techniques. This research was held in laboratory of Animal Feed and Nutrition, Departement of Animal Science, Faculty of Agriculture,  Sriwijaya University. Completely Randomized Design (CRD) with four treatment and four replications, were used : P0 (rice straw control),  P1 (rice straw with Zn Lysinate 0,1%), P2 (rice straw with Zn Lysinate 0,2%),  P3 (rice straw with Zn Lysinate 0,3%). Observed parameters were dry matter digestibility (DMD), organic matter digestibity (OMD), and N-ammonia concentration.The result showed  that the highest dry matter digestibility, organic matter digestibility and N-amonia were on M0 treatment ; 33,86%, 44,94%, 1,50mM respectively. Supplementation of  Zn Lysinate for rice straw had  effect on Dry Matter Digestibility (DMD), but had no effect on Organic Matter Digestibity (OMD) and N-Amonia concentration.
Aplikasi Formulasi Pakan Seimbang untuk Mendukung Peternakan Itik Petelur Ramah Lingkungan Prabowo, Agung; Susanti, Aulia Evi
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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Feed is a major factor in the business of laying ducks. Approximately 70% of the production is to feed. Therefore, to get optimum benefit, feed must be efficiently formulated. To efficient, feed must be balance, the content of feed nutrients must be in accordance with the needs of livestock, so the remaining nutrients out of feed is a minimum. In addition to efficient, balanced feed can also reduce environmental pollution. Waste produced from farm can be a source of contamination of water or wells, if there is no further waste management. One of the consequences of water pollution by livestock waste nitrogen levels are rising. To simplify and accelerate the balanced feed formulations required a software application. This paper aims to introduce balanced feed formulation based software. Application software consists of three main parts, namely database, data processing and results. Simulations conducted on laying ducks feed on the production period. Two types of feed used in this simulation, namely: regular feed (PB) and balanced feed (PS). Each type of feed is repeated five times. Simulation results with the feed formulation software application show significant difference between PB and PS feed. PS is better than PB. Application of balanced feed formulation can be used to support environmentally friendly farming laying ducks.
Kelimpahan dan Pola Penyebaran Nematoda Entomopatogen sebagai Agensia Pengendali Serangga Hama pada Berbagai Lahan di Semarang Indriyanti, Dyah Rini; Pribasari, Arini Dwi Hutami; Puspitarini, Desi; Widiyaningrum, Priyantini
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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The soil was a place which plants and various organisms live. One of the soil organisms that plays an important role as agents of biological control of parasitic nematodes of insects, was known by entomopathogenic nematodes (ENP’s). The aims of this research was analyzing the population density and patterns spread of the entomopathogenic nematodes on overgrown annuals land, overgrown perennial land, non-vegetation land and ranch land. The experimental design used in this study was a randomized design group. The technique of determining location using purposive sampling. Soil samples were taken at four location with eight replicates. The research was held in August-October 2013. The ENP’s of land obtained by the technique of baiting using Tenebrio molitor. The result showed that ENP’s population density was found from ranch land was 67.411 tail/mL. It was higher than the ENP’s population density on non-vegetation land was 15.199 tail/mL. The statistics Mann Whitney showing absence of difference density of populations ENP’s. A pattern to scatter nematode entomopathogen on some land widely distributed in clumped.
Efisiensi Pemanfaatan Lahan pada Tumpangsari Jagung (Zea mays L.) dan Kedelai (Glycine Max L. Merrill) di Lahan Pasang Surut Aminah, Iin Siti; Rosmiah, Rosmiah; Yahya, M. Haris
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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Tidal swamp is suboptimal land with low fertility rates. This study aims to determine the cropping pattern through intercropping spacing arrangement with biological fertilizer application on corn and soybean. Field research was conducted in the village of tidal swamp Banyu Urip South Sumatra in June-November 2013 using the Split Plot design with the main plot composition Corn planting distance (J) - Soybean (K) i.e. JK 1:3, 1:2 and 1:1; subplot is the provision of biological fertilizer (0, BioP, Azospirillum and BioP + Azospirillum) with 3 replications. Data monoculture corn and soybean as control. Land use on maize soybean intercropping obtained shelled corn and soybean production highest in treatments JK 1:3 with inorganic fertilizer application, although not statistically significantly different (HSD = 0.05). The efficiency ratio is calculated through the land Land Equivalent Ratio (LER) in the treatment of JK 1:3 high of 1.56 whereas the biological fertilizer application LER was 1.69. Competition between plants with CR (competition ratio) of 7.25 occurred at the highest JK 1:1. This study showed a favorable outcome in the land use pattern of intercropping maize planting soybeans in tidal swamps.
Respirasi Tanah sebagai Indikator Kepulihan Lahan Pascatambang Batubara di Sumatera Selatan Setyawan, Dwi; Hanum, H.
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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Soil respiration has been widely studied in relation to soil health and carbon sequestration. Respiration measurements are better performed in the field, either with in-situ static or dynamic systems. This study evaluated the recovery of coal post-mining land in Tanjung Enim, South Sumatra, which is reflected from the ground surface indicators and soil respiration. Observations were carried out at PT Bukit Asam location represented by Muara Tiga Besar (MTB). Secondary forest was also used as a reference. The area had been revegetated generally with sengon, bamboo and acacia in 2000 (North MTB), while planting in 2005, 2006 and 2007 only with acacia interspersed with eucalyptus (South MTB). Soil samples were taken with a number of brass rings and then divided into 0-2, 2-5 and 5-10 cm depth. Respiration with inverted box technique used a solution of 0.5 M KOH. Revegetation increased significantly the organic carbon content from 0.96% to 1.96%, although still lower than organic carbon of the forest soil with the average of 2.81%. There was also a similar pattern found for total N and available P. It is evident that soil enrichment occurs in the 0-2 cm layer. In situ soil respiration showed no consistent increase with age of revegetation with values ranging from 670 to 767 mg CO2/m2 per hour, while the forest soil reaches 789 mg CO2/m2 per hour. Based on these facts we conclude that soil respiration can not be used as the sole indicator of recovery in coal post-mining land, thus needs to be combined with other variables.
Budidaya Pakchoy (Brassica rapa L.) di Lahan Tailing Pasir Bekas Penambangan Timah dengan Amelioran Pupuk Organik dan Pupuk NPK Inonu, I.; Khodijah, N. S.; Supriadi, A.
Jurnal Lahan Suboptimal Vol 3, No 1 (2014)
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The objectives of this research are to study of the feasibility of using the sandy tailings for pakchoy (Brassica rapa L.) cultivation, to study the effect of organic manure and NPK fertilizer ameliorants to growth and yield of pakchoy and to get the optimum dosage of the organic manure and NPK fertilizer for pakchoy cultivation in sandy tailings of tin post-mining. This research was conducted in sandy tailings site which has been 27th years old after mining in Pemali Village Bangka District on May 2013 to July 2013. This research used factorial randomized completely block design with two factors and three replications. The first factor is organic manure dosage (15; 30; 45 ton/ha) and the second one is NPK fertilizer dosage (200; 250; 300 kg/ha).The results that the sandy tailings of tin post-mining is feasible to pakchoy cultivation. Organic manure dosage affected the growth and production of pakchoy and dosage of 30 ton/ha of organic fertilizer give the best growth and yield responses. There was no significant effect of NPK dosage to growth and yield of pakchoy. There was no significantly interaction effect of organic manure and NPK factors to growth and yield of pakchoy.

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