Jurnal Lahan Suboptimal : Journal of Suboptimal Lands
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Prediksi Potensi Air Tanah untuk Optimasi Sawah Tadah Hujan dalam Menunjang Ketahanan Pangan
No full textYasar et al, 2017. Prediction of Ground Water Potential for Optimization of Rainfed Rice Field in Supporting Food Security. JLSO 6(2):170-175.In Simeulue Island, that has the existed paddy field and generally of that is  rainfed. Recently, to irrigate the paddy field with that percentage is expected enough by natural meet of the necessity of paddy field by receiving the potential precipitation. However, rising of the climate change has caused paddy field activity is not fully runned by only utilizing the precipitation and utilizing the surface water, as irrigatiom water resource is not possible because of geological difficulty. This article aims to find a breakthrough related to the problem of irrigation water insufficiency through utilization of natural resource potency in Simeuleu Island. Presenting is descriptively done using primary data by way of field measurement and literature review to obtain a beneficiary of groundwater as irrigation water resource. Data acquiring in this research uses geoelectrical method by setting the Wanner-Schlumberger configuration of Resistiviti meter ARES. Data were obtained from one spread that was east-west oriented by having 460 m spread length and 20 m spacing interval. The coordinate of spread is at initial point N 02°25’14.2â€/E 96°18’12.2†and at final point N 02°25’43.9â€/E 96°18’27.1. Based on the 2D resistivity cross section shows that Situbok village (STB) is generally obtained a low resistivity value which is 2-100 Ωm in range and dominantly expected as alluvium. Low resistivity value can be estimated as a conductive layer (aquifer) which commonly consists of groundwater. On the cross section of resistivity value, the conductive layer is the layer which has the resistivity value less than 16 Ωm and laterally and vertically is existed at 240-360 m and 45-94 m, respectively
Pengaruh Orientasi Kewirausahaan Terhadap Kinerja Produk Pada Agroindustri Kopi di Kota Bukittinggi
No full textPutri et al, 2017. The Effect of Entrepreneurship Orientation on Product Performance of Coffee Agroindustry in Bukittinggi. JLSO 6(1):1-6.Succes of business development determined by the entrepreneur ability to develop ideas and search for business opportunities. Creativity in developing ideas is one of the most quality an entrepreneur should have in order to achieve business success. Entrepeneur can be achieve the quality if the have a clear orientation toward product and market. The purpose of this study is to detemermine the effect of entrepreneurship orientation on product performance of coffee agroindustry in Bukit tinggi. Sample for this study was token randomly as much as 30 coffee agroindustry in city of Bukit tinggi. The data were analized using regression analysis with independent variables of entrepreneurship orientation while the dependent variable was product performance. The result shows that variables include entrepreneurship orientation : goal, product creation, innovation and risk simultaneously affect the product performance. However, partially only innovation ability affect the product performance
Pemanfaatan Lahan Tadah Hujan untuk Budidaya Padi Unggul dalam Menghadapi Perubahan Iklim
No full textKartikawati et al, 2017. Utilization of Rainfed Rice Areas for High Yielding Rice Cultivation on Climate Change. JLSO 6(2):142-149.Many efforts have been conducted by Indonesian government for national food supply and food security through rice cultivation on sub optimal lands in accelerating food sustainability particularly rice, maize and soybean. The rainfed area is an important sub optimal land which should be developed due to 26,5% of Indonesia rice production produced from cultivation system in those area. However, the cultivation in rainfed areas have challenges such as changing of rainfall pattern due to climate change. Therefore, to obtain the information of productivity from high yield rice varieties and methane emission in rainfed area, a study has been conducted by applying innovation of environmental friendly technology such as fertilizer use based on integrated cropping calendar. The study was carried out at Research Station of Indonesian Agriculture Environment Research Institute in Jakenan, which is one of rainfed area in Pati District, Central Java Province. The study was conducted on first growing season (GS 1) or rainy season by applying direct seeded system using rice seeder. Four rice varieties were used for this study, namely Ciherang, Dendang, Inpari 31 and Inpari 24. The study showed that productivity of four rice varieties were 5.92; 7.10; 5.06 and 7.41 t/ha, respectively. Methane emission was significant different among the varieties as 232; 319; 300 and 405 kg/ha/season, respectively
Pemanfaatan Tumbuhan Liar Berbunga untuk Konservasi Musuh Alami Serangga di Ekosistem Kelapa Sawit di Lahan Sub-Optimal Sumatera Selatan
No full textPrabawati et al, 2017. The Role of Wild Flowering Plants in Conserving Insect Natural Enemies in Lowland Oil-Palm Ecosystem of South Sumatera. JLSO 6(1):78-86.Wild flowering plants can be used in increasing the potential of insect natural enemies on oil palm plantations. This paper inventoried the diversity of natural enemies that interacted with wild flowering plants in the oil palm ecosystem. Wild flowering plants are used as feed sources and living places  which provide alternate hosts for natural enemies, namely predators and parasitoids. Some families of flowering plants associated with parasitoids in oil palm ecosystem include Euphorbiaceae, Leguminosae, Fabaceae, Acanthaceae, Asteraceae, Polygonaceae, Rubiaceae, Capparidaceae, Lamiaceae, Turneraceae. Some plant species associated with predators in oil palm plantations include Antigonon leptosus, Elephantopus tomentosus, Nephrolepis biserata
Teknologi Mitigasi Gas Rumah Kaca Di Lahan Rawa Pasang Surut
No full textAnnisa, et al. Technologies for Mitigating Greenhouse Gas Emissions on Tidal Swamp Land. JLSO 5(2):178-188.Utilization of swamps for agricultural development is a strategic choice in an effort to offset the decrease in productive land in Java due to conversion of land functions from agriculture to non-agriculture. The properties of land in swamplands is a major limiting factor that causes low productivity of swamp land. The development of agriculture in swamplands often has a negative impact on land and environment, due to inappropriate landl management. One of the environmental impacts in swampland development is carbon emissions. Carbon emissions can be reduced through the use of appropriate soil ameliorant and water management within the swamp hydrological area. Both approaches are important not only to mitigate greenhouse gas emissions but also to increase swampland agriculture productivity
Potret Budidaya Padi Lebak oleh Petani Lokal di Kecamatan Pemulutan, Ogan Ilir, Sumatera Selatan
No full textLindiana, et al. Rice Cultivation Images by Local Farmers in Pemulutan District, Ogan Ilir, South Sumatra. JLSO 5(2):153-158. Plans and efforts in increasing rice productivity at riparian wetlands can be commenced by introducing relevant technologies; however, the selected technologies should be based on real needs or problems faced by local farmers. As a pre-requisite, if the needs and problems are not comprehensively understood, government intervention to introduce new technology may not be effective since the technology may not be relevant or affordable to local farmers. Objectives of this research are to analyze characteristics of the wetlands, farmer’s adoption capacity, and technological preferences. The research was conducted in five villages at Pemulutan District. Qualitative Grounded Theory and Quantitative Survey were employed through dialogues with 100 local farmers. Results of the research indicated that any effort to increase riparian wetland productivity should consider the unpredictability of flood occurrences and prolonged drought. These unfavorable conditions have limited local farmers to only grow rice once per year. Local farmers were almost solely depending on rice and cultivation of other crops were rarely observed, except limited vegetables grown on elevated border of paddy fields
Evaluasi Pertumbuhan dan Seleksi Tanaman Padi Aksesi BC2F2 Toleran Cekaman Terendam Serta Persilangan balik-nya dengan Tetua Lokal
No full textHasmeda et al, 2017. Growth Evaluation and Selection of Several BC2F2  Rice Accession Tolerant to Submergence Stress and Their Backcrossing to Local Parent. JLSO 6(1):7-20. This study was aimed to conduct selection process upon the four accessions of BC2F2 rice which were tolerant to submerging stress during vegetative stage. The selected plants were crossed with local parents. Local parents being used in this experiment consisted of Payak Silembuk, Siam, Pegagan, and Pelita Rampak.  There were several backcrossing being observed i.e. BC2F2 Accesion (BC2F2Py.Silembuk, BC2F2.Siam, BC2F2.Pegagan, and BC2F2P.Rampak) which were evaluated on the 20th day after being planted for 14 days. Parameters were observed before and after submerging process. The data obtained were analyzed with the Least Significant Difference (LSD) formula. As the result, BC2F2Pys accession had better tolerance compared with the rest of accessions and showed consistent resultsas the previous research. It is concluded that the accession of BC2F2Py.Silembuk showed the best performance among the other  of BC2F2
Keanekaragaman Vegetasi Hutan Mangrove di Pulau Payung Sungsang Banyuasin Sumatera Selatan
No full textAfriyani et al, 2017. Vegetation Diversity of Mangrove Forest in Payung island Sungsang Village Banyuasin District. JLSO 6(2):113-119.The mangrove forest is a natural biological resources with various diversity potential that provides benefits directly or indirectly for the life of living beings. Payung island, Sungsang Village, Banyuasin District is one of the areas in South Sumatra Province where the forest mangrove still well preserved. The research abaout mangrove diversity has been conducted in Payung Island in November 2017, The aim of this research was to know the composition and species diversity of mangrove in the island. The collection of primary data in this research was included measurements of the distribution of mangrove vegetation. Important Value index (IVI) is a diversity index and parameter analysis of mangrove vegetation. There are 4 species of mangrove was founded in 3 transect observations, namely Avicennia alba, Avicennia marina, Bruguera apicullata gymnorhiza and Rhizophora. Bruguera vegetation dominate gymnorhiza tree level, while at the level of the child dominated two types of mangrove vegetation i.e. vegetation Avicennia marina and Rhizophora apicullata vegetation. The condition of mangrove forest showed that community in Payung Island are stable that It contains mangrove forest condition criteria Broken-with the value of the density of Mangrove (ind/ha) < 1000
Populasi Bakteri Tanah pada Padi Pasang Surut dengan Aplikasi Pupuk Cair Neptunia Prostrata
No full textAksani, et al. Soil Bacteria Population in Paddy Tidal Land by Application of Liquid Fertilizer Neptunia prostrata. JLSO 5(2):170-177. High soil acidity in tidal lowland influences soil bacteria population. This research aimed to determine soil bacteria population with liquid fertilizer application made by Neptunia prostrata for paddy grown in tidal lowland. This research using factorial completely randomized design with two factors and three replications. The first factor was liquid fertilizer rate, consisting of three levels: 96 mL pot-1(P1), 120 mL pot-1(P2) and 144mL pot-1(P3). The second factor was application period consisting of three times: once time at the planting time (W1), two times at the planting time and harvesting time and three times at the planting time, primordial stage and harvesting time. The result showed that the highest soil bacteria population was 10,94 log spk g-1with the treatment of  144 mL pot-1 liquid fertilizer and given once time at the planting time (P1)
Daya Hasil Galur-Galur Elit Padi di Lahan Sawah Rawan Salin di Cilamaya Wetan Karawang
No full textNafisah et al, 2017. Grain Yield of Rice Elite Lines Under Saline Prone Condition in Cilamaya Wetan, Karawang Subdistrict West Java. JLSO 6(1):21-32.Utilization of high yielding rice varieties tolerant to salinity is one way to maintain yield sustainability in salt affected rice area. As many as 30 elit lines and 4 varieties checks were tested in saline prone area in Muara Baru, Cilamaya Wetan sub district, Karawang, West Java. The trial was arranged in Randomized Block Design with three replications. Twenty eight old seedlings were planted in 3x4 m2 plot size with 25 cm x 25 cm planting space. Analysis variance showed two elit lines (1131-Ski-4 dan IR86385-50-2-1-B-SKI-2) yielded 5.48 dan 5.64 t/ha, respectively. These yield were significant higher than those of two popular checks planted by local farmers, i.e. Mekongga and Sintanur which yielded about 4,44 t/ha. Beside 11 lines had yield 0,5 t/ha higher than that of popular check variety.  Correlation analysis showed grain yield highly positive correlated with productive tiller number and filled grain number, while thousand grain weight highly positive correlated with plant height. Screening for salinity tolerance in seedling stage done in screen house showed that both 1131-Ski-4 dan BP14082-2b-2-5-TRT-35-2-SKI-1 consistently tolerant under salinized Yoshida solution at 12 dSm-1. These two lines are very potential for further tested in saline prone area. Â