bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enhanced seedling germination and growth of sorghum through pre-sowing seed magnetic field treatment
Authors: Nurbaity A , Nuraini A , Agustine E , Solihin M A , Setiawan A , Mbusango A 
Published: December 2019

Abstract
One of the emerging topics in agriculture is application of biophysical method such as the use of magnetic field (MF) to treat seeds for improved plants production. An experiment has been carried out to determine the effect of MF exposure on sorghum seeds and its subsequent growth in soil. The treatments were different strength of MF (control, 1 mT, 6 mT) and exposure duration (5, 10, 15 min). The magnetically treated seeds showed higher seed germination percentage, vigour index, seed germination index, seedling growth, plant growth and chlorophyll content compared to non-magnetically treated seeds. The best duration of MF exposure was 15 minutes, either at MF strength 1 mT or 6 mT. It is suggested that pre-sowing MF treatment has the potential to improve crop productivity through the enhancement of germination, seedling emergence, and growth of plants.
Application ALOS Palsar Mosaic 25 m and legacy data for determine tidal swampland and back swampland
Authors: Cahyana D , Khairullah I , Anwar K , Karolinoerita V , Mawardi  , Sulaeman Y , Tateishi R 
Published: December 2019

Abstract
An up to date swampland spatial data in tropic area such as Indonesia based on remote sensing data is important needed for estimating the recent change, especially for agriculture activities. The big problem to acquire remote sensing data in tropic area is cloud cover in almost entire areas. In this study, a base map of swampland map in South Kalimantan was developed using ALOS Palsar 25 m Mosaic data obtained in 2010 and legacy data. That remote sensing data are adequate to represent the area because was produced by active remote sensing that able to through cloud cover in tropic area. For this purpose, the datasets was segmented by region growing algorithm and then random forest classification method were developed using training data to determine swampland and no swampland area. Afterward the legacy data from prior research that is mathematic equation calculated and applied to determine tidal swampland and back swampland. The visual comparison result showed there are 3 types backscatter combination HH and HV, 30:70; 40:60; and 50:50 that the best combination is 50:50 with overall accuracy 85,25%. Using that combination the area of swampland that suitable for agriculture activities in South Kalimantan is 669,185.37 ha that tidal swampland around 45% and back swampland around 55%.
Growth Response and Yield of Saline Tolerant Rice Varieties to Bio-fertilizer Application at Central Java North Coastal Saline Paddy Field
Authors: Purwanto Suprayogi , Salsabila Jinan 
Published: December 2019

AbstractExtension of rice production to coastal area of some islands in Indonesia is subjectd to problems that include: high salinity, poor soil fertility and limited number of available saline tolerant varieties. A field experiment was carried out to study the growth response and yield of several saline tolerant rice varieties to bio-fertilizer application at northern coastal area paddy field of Pemalang, Central Java, Indonesia. Four rice varieties that consisted of saline tolerant varieties Inpari Unsoed 79 Agritan, Inpari 34 Salin, and Banyuasin, and one saline intolerant variety Ciherang, were grown and treated with foliar application of commercial bio-fertilizers Bio-P60, Herbafarm and Biofarm which are known to contain active microorganisms. These rice varieties and bio-fertilizers were arranged in Randomized Complete Blocked Design with three replicates. Rice crop management were carried out following recommendation of locale rice management practice. The results demonstrated that BioP60 and Biofarm have greater effect on leaf chlorophyll content as compared to Herbafarm. The lowest percentage of empty grains per panicle was found on Biofarm application (19.6%). No significant diference was observed on the effect of bio-fertilizers on other growth variables and yield. Growth performance and yield variation were observed among the four rice varieties when grown on saline paddy field (EC of 0.65 dS/m, 6.7 pH, 5.37 cmol/kg exchangeable-Na). Ciherang and Inpari Unsoed 79 Agritan demonstrated greater grain weight per effective plot and greater grain weight per hectare. No interaction effect between bio-fertilizer application and varieties was observed on all growth variables and yield of the rice.
Analysis of Stomata, Chloroplast, and Chromosome of Local Mandarin Citrus (Citrus reticulata) Plants Grown from Endosperm Culture
Authors: Kosmiatin Mia , Martasari Chaireni , Amelia Kurniawati Frizky , Gandhi Ningrum Prasetia Rinanda , Sari Dewi Prita 
Published: December 2019

Abstract
This research aimed to identify accessions of jeruk keprok Garut plants (Citrus reticulata) grown from endosperm culture with stomata analysis, chloroplasts analysis, and chromosome analysis. This research was conducted at the Plant Breeding Laboratory of Indonesian Citrus and Subtropical Fruits Research Institute (ICSFRI), Malang. This research used seven accessions of jeruk keprok Garut (local mandarin citrus) from endosperm culture and mother plant of Garut mandarin. Data analysis was carried out with the Statistical Package for the Social Sciences (SPSS) application Application 22.0. The alignment analysis showed that all one accession (GT 224) out of seven accessions of Garut mandarin grown from the endosperm cultures is consistent with the mother plant according to chromosome number observation, stomata number observation, and chloroplast number observation.
Nutrient Concentration and Population of Macrozoobenthos in Ciletuh Bay, Sukabumi District, West Java
Authors: Suhanda Delilla , Yuniarti MS , Nurul Ihsan Yudi , Harahap Syawaludin A. 
Published: December 2019

Abstract
Relationship between nutrient concentration and macrozoobenthos can indicate the level of fertility or pollution in the sea waters. The purpose of this research is to obtain nutrient concentrations in pore water, macrozoobenthos community structures, and the relationship between nutrient concentration and macrozoobenthos in pore water Ciletuh Bay. The research are using survey, purposive sampling and descriptive analysis method. The parameters observed in this research are nutrients including ammonia, phosphate, nitrate, nitrite, total N, and Total Organic Carbon (TOC). Analysis of population macrozoobenthos was determined by knowing abundance index and dominance index. From the results of the study, it has been found that two types of macrozoobenthos is Donax sp. and Nassarius sp which lived immersed, and its dominance influenced by sand sediment fraction. The higher concentration ammonia, nitrate, nitrite, phosphate, N-total, and TOC which is 0.028, 0.708, 1.663, 0.075, 3.066 and 1.4 mgL−1. The factor that most influences the presence of macrozoobenthos is the type of sediment and the closest concentration of nutrient is phosphate.
DNA Barcoding for mangrove identification
Authors: Taufan Harisam R. , Sahri Siregar Asrul , Arie Prayogo Norman , Sukardi Purnama , The Hung Nguyen 
Published: December 2019

Abstract
Mangroves are distributed in the transition zone between sea and land, mostly in tropical and subtropical areas. They provide important ecosystem services and are therefore economically valuable. Mangrove species identification using traditional taxonomical methods is often burdened with taxonomic controversies. DNA barcoding provides a useful tool for species identification and phylogenetic reconstruction. rbcL and matK are short and unique DNA sequences, and also provide good identification for magrove. This critical review highlights the development of the use of molecular applications that is DNA Barcoding. We focus on observing the development of the use of DNA barcoding in the world, especially on mangroves. Our observations are limited to the use of rbcl and matk markers in some mangrove species in the world. In conjugation with newer and faster techniques such as high-throughout sequencing, rbcL and matK marker can serve as an effective modern tool in mangrove identification.
Genetic Similarity of Local Mandarin Accessions (Citrus reticulata) Resulted from Endosperm Culture According to ISSR and Microsatelite Markers
Authors: Kosmiatin Mia , Martasari Chaireni , Gandhi Ningrum Prasetia Rinanda , Amelia Kurniawati Frizky , Sari Dewi Prita 
Published: December 2019

Abstract
Citrus is the third most important fruit commodity in Indonesia, especially seedless citrus. One technique to get seedless citrus is by endosperm culture possessing triploidy sets of the chromosome. Plants that have triploidy sets of the chromosome will usually become sterile or seedless plants. This research aimed to 1) compare ratio of the length and width of the leaves between three types of local mandarin (Citrus reticulata) as mother plants and mandarin accessions grown from endosperm cultures, 2) identify mother plant and mandarin accessions from endosperm cultures with Inter Simple Sequence Repeats (ISSR) markers and 3) identify mother plant and mandarin accessions from endosperm cultures with Simple Sequence Repeats (SSR) markers. The research was conducted at Indonesian Citrus and Subtropical Fruits Research Institute (ICSFRI) Batu started from October 2018 until January 2019. The plants used in the study were Garut mandarin and seven accessions grown from endosperm cultures. Identification of plants with morphological markers has several disadvantages due to environmental factors. Identification with molecular markers is needed to complete the morphological information obtained. SSR markers are more suitable to be used in this study compared to ISSR markers because the results are in accordance with the objectives of this study, which is not expected to have high genetic variation. Identification with SSR molecular markers is more suitable because it showed low genetic diversity or no genetic diversity between mother plants and plants endosperm cultures when compared to ISSR markers. The desired change in the plants produced by endosperm cultures is only in ploidy properties.
Identification of the El Niño Effect on Lake Toba’s Water Level Variation
Authors: Irwandi Hendri , Syamsu Rosid M. , Mart Terry 
Published: December 2019

Abstract
Lake Toba is located in the province of North Sumatra, Indonesia which is the largest lake in southeast Asia and is the largest volcanic-type lake in the world. The lake’s countenance level is decreased and this can have a negative impact on utilization of power plants and agricultural irrigation. This study will see whether the water level is decreased due to the influence of El Niño activity. The methods used are statistical and descriptive analysis. The data used is the water level of Lake Toba in period of 1957-2016, precipitation data uses NOAA Climate Prediction Center (CPC) data with a resolution of 0.50° × 0.50° from January 1957 to December 2013 (56 years) to analyze rainfall anomalies. El Niño’s activities have an effect on Lake Toba water level, where the moderate El Niño > 12 months duration resulted in a reduction of 1.5-2 m, while the strong El Niño with a duration of > 10 months resulted in a decline of 2-2.5 m.
PRODUCTION RISK OF PEANUT FARMING IN DRY LANDSECOND PATTERN AFTER CORN WITH BIOCHARON BLITAR DISTRICT, INDONESIA
Authors: Asnah  , Masyhuri  , Handoyo Mulyo Jangkung 
Published: December 2019

Abstract
The reduction in land due to the transfer of functions from agriculture to non-agriculture, requires stakeholders to intensify the management of dry land and infertile land which was not originally a priority. Therefore, every opportunity for adaptive technology development needs to be utilized as well as possible to encourage increased productivity. This study aims to determine the impact of the use of biochar used in the first cropping maize farming on production and risk of production of the second cropping peanut farming in dry land. The study uses a basic survey method, by determining the location by purposife. The number of samples was 150 people determined by the proportional random sampling method. The data analysis method uses the production function model and the production risk function using the Cobb-Douglass ordinary least square (OLS) method. The results found that the use of biochar in the first cropping maize farming had an impact on the production and risk of the second cropping pattern of peanut production. As a comparison, the factors of production in peanut farming which previously had the effect of reducing production; in the second cropping pattern after maize had an effect on increasing production and reducing production risks include seeds, phosphor fertilizer, potassium fertilizer, pesticide, and labor in the family. Only workers outside the family have the effect of reducing production and increasing risk.
Spatial distribution of soil water content in potato horizontal-ridge profile under various ridge dimensions
Authors: Wijaya Krissandi , Hari Kuncoro Purwoko , Ardiansyah  , Arsil Poppy , Ary ani Hilda 
Published: December 2019

Abstract
Vertical (slopping)-ridge is generally applied to cultivate potato crop in tropical highland area with intensive use of non-organic fertilizer, by which the soil erosion as well as environmental degradation might be significantly accelerated. On the other hand, horizontal (contour)-ridge has been very effective to reduce the soil erosion in potato cropping field, but yet slightly ineffective to support the optimal crop production, due to the waterlogging in the ridge profile. Dimension of the horizontal-ridge is expected to affect water distribution as well as the waterlogged condition, on which a specific study need to be focused, in order to develop an appropriate drainage system on the ridge. This study was aimed to characterize the spatial distribution of soil water in the horizontal-ridge profile under various ridge dimensions. Totally 9-potato-plots of 300 x 300 cm2 with 5% slope were prepared in Serang village, Purbalingga with various dimensions and replications of the horizontal ridges: 30 x 30 x 30 cm3 (G30), 30 x 40 x 30 cm3 (G40), and 30 x 50 x 30 cm3 (G50). Of each plot, the dielectrically (volumetric)-water content of the horizontal-ridge soil within the grid of 80 x 80 cm2 at the depth of 5, 10, and 20 cm were measured every months using EC5 moisture sensors and EM50 data logger, and then averaged. Based on the given grid, the data were plotted in contour pattern and were then analysed using semivariogram (Gstat and GNUplot) to characterize the spatial distribution and variability, respectively. The results showed that the spatial distribution of dielectrically (volumetric)-water contents tended to be inter-correlated within each ridge dimension, and the data were increased with soil depth and ridge dimension increment. Accordingly, the data were spatially-correlated with sill (C, semivariance) ranged from 0.00084-0.00429 cm3 cm−3 and range of influence (a) ranged from 0.624 - 2.809 m, in which the G50 had most representative and stable trend of the spatial variability (C and a values) among others.
THE EFFECT OF CHANGE IN WATER LEVEL ON THE ABUNDANCE OF LIPTINITE AND VITRINITE MACERALS IN UPPER KELESA FORMATION SHALE IN KUBURAN PANJANG, RIAU
Authors: Heri Hermiyanto Zajuli M. , Ramli Taufik 
Published: December 2019

Abstract
Research on changes in water levels to the abundance of liptnite and vitrinite maceral has focused on Kuburan Panjang area of the Sumai sub-Basin, Central Sumatra Basin. The subject of this research is shale rock from the Eocene-Oligocene Kelesa Formation. Series of rocks from bottom to top shows repetition between shale, sandstone and mudstone strata bounded by conglomerates at the top and bottom. The composition of organic material consists of vitrinite ranging from 0.20 - 5.0%, liptinite 0.60 - 4.70%, pyrite 0.20 - 16.00%, carbonate maceral 0.20 - 24.2%, and clay mineral which is the most dominant component, ranging from 71.60 - 98.00%. Based on the results of TOC analysis, the abundant organic material of the Kelesa Formation shale has a TOC value of 1.18% to 7.17% indicating the ability of shale as a source rock is very good. The presence of organic material in the study area shows that there is a cycle of enrichment of organic material from bottom to top. The smaller the ratio of pristane/phytane (anoxic condition, high water level), the smaller the content of liptinite and the higher the content of vitrinite. Otherwise, the greater the ratio (oxic condition, low water level), the higher the content of liptinite and the lower the content of vitrinite. Change in water level during sedimentation has effect on the quality of shale as a source of unconventional hydrocarbon energy in the Kuburan Panjang area.
Analysis of Port Fare Increases On Container Yard Services Using Logistic Regression Model
Authors: Zuhri S , Sentia P D , Lubis N A , Permai S D 
Published: December 2019

Abstract
The port company used in this research is the only port where container ship contained in Aceh and has been operating for more than 1 year. The problem with this was the large buildup of containers with long periods of time in the cultivation field that would cause losses. Losses due to the duration of the buildup are influenced by several factors, such as the yard of ratio and the length of time the container is reviewed based on the large number of containers in the container yard. For payment of the first five days of service, the container accumulation fare shall be borne by container owner company as stakeholder of port company. After more than five days, the customer will be charged the container accumulation rate calculated per box without any time consideration. This causes the customers don’t take the goods immediately, therefore it was necessary to do research on the analysis of port fare increase in port company in Aceh using logistic regression model as the basic of decision making. Based on the prediction of logistic regression model using software R3.4.3, there was a loss cost in the container yard, therefore it was necessary to take decision of the application of the port fare increase on container yard service. Based on the results of these predictions, the resulting model was a good model with an accuracy of 74.8%. The factor that affect of the loss cost was the length of time the container in the container yard period II and III.
The reduction of waste on pile production process using value stream analysis tool (VALSAT) method
Authors: Septiani M.F. , Qurtubi  , Helia V.N. 
Published: December 2019

Abstract
This paper discusses about the reduction of waste on the pile production process in PT. XYZ, a company that run its business in the field of engineering, production installation (EPI) of a concrete industry. The methods of data collection are observation and interview. The analysis that will be employed is Value Stream Analysis Tool (VALSAT). Based on the value stream mapping, it is identified that the cycle time data for product’s manufacturing is 5.847 seconds with lead time of 1.380 seconds. Based on the result of observation and interview, it is identified that the biggest waste is resulted from the waste of excessive transportation. The movement process is executed on the same workstation and among workstations. While, the result of process activity mapping indicates that 27,6% of all activities are included in transportation activities. By conducting the mapping using fishbone diagram, later could be identified the factors that influence waste, in which, from human resource perspectives, it is caused by the less-evenly workers distribution at line 2 on pile production, unbalance production process that causes idle time or idled operators, the lack of understanding and workers’ skill on machine utilization as well in handling the problems. In the perspective of method, the issue lies on layout factors and 5S system that runs inappropriately at line two. In terms of machine, it is stressed on the lack of numbers of tools or machines as well as the less upgraded machines. From the perspective of environment, rain definitely could affect the condensation maintaining process and evaporation.
Identify Key Success Factors Using Interpretive Structural Modeling (ISM) : A Case Study in Small and Medium Enterprise in Indonesia
Authors: Kusrini E , Safitri W , Helia V N 
Published: December 2019

Abstract
Small Medium Enterprises (SMEs) have a very significant role in the economy of the community. The large number of SMEs on the same field causes high competition to survive in market. A lot of literature empirically discuss the success factors of SMEs in Indonesia, but there are still few which carry out further research by structuring a model of interconnectedness between these elements to find out the key factors. This study aims to determine the key factors by classifying and structurally modelling the factors based on the level of the affecting elements of an SME’s success. Interpretive Structural Modeling (ISM), which is an interactive learning process where a set of elements are structured into a comprehensive system model, is used as the approach. ISM helps in determining the sequence and purpose of complex relationships between elements in the system. This research found 24 success factors that divided into 13 levels and categorized into 4 sectors including autonomous, dependent, linkage, and independent sector. The sub-elements or key factors that influence the success of SMEs include (1) motivation and experience, (2) entrepreneurial spirit and leadership, (3) formal education level, and (4) technical guidance.
Professional Skills Requirement of Mechanical Engineers
Authors: Ismail W Omar Ali Saifuddin Wan , Hamzah Noraini , Fatah Ireana Yusra Abdul , Zaharim Azami 
Published: December 2019

Abstract
Professional Skills is the basic requirement that all engineers need to master in the current job market. This study was conducted throughout peninsular Malaysia using the Soft Skills Model introduced by the Ministry of Education (MoE). Among the objectives of this study is the level of requirement of the Soft Skills (SS) element to produce a competitive Mechanical Engineer and identify the most dominant Soft Skills needed in the current job market against Mechanical Engineers. The questionnaire distributed to respondents and data was analysed using XL-STAT 2014 software to obtain Discriminant Analysis (DA) to achieve the objective of the study. The overall percentage for (SS) elements is 91% respectively. This study will be a complementary set for the students of Mechanical Engineering in Malaysia. Mastering the features required by the industry makes it easy for students to put themselves in the real job world.
Simulated annealing algorithm for solving pickup and delivery problem with LIFO, time duration and limited vehicle number
Authors: Andriansyah A , Prasanti N , Sastra H Y 
Published: December 2019

Abstract
Nowadays, the process of delivering goods or documents from one place to another can be done faster by utilizing a courier service. This courier must be able to create a travel route to pick goods and deliver them with a short time. Route creation will be more difficult if there is a time window for each customer and the goods being transported are heavy or dangerous items. In this case, the courier company must implement a last-in-first-out rules. In addition, with the limitation of vehicles number, companies have to minimize the number of underserved customers. This problem called pickup and delivery problem with last-in-first-out, time duration, and limited vehicle number. In this study, to solve the problem, simulated annealing algorithm was used for some dataset. To explore the solution space for the problem, this algorithm will use pair relocation operator. In several experiments, the results show a good solution and short computation time.