bluuebunny/crossref_metadata_2025 huggingface dataset:
The Analysis Study on The Self-Purification Capacity of Klampok River, Assessed from Organic Parameter of Dissolved Oxygen (DO) And Biochemical Oxygen Demand (BOD) (Case Study: Segment Sidomukti Village, Bandungan Sub District – Poncoruso Village, Bawen Sub District)
Authors: Nugraha W D , Sarminingsih A , Damatita A
Published: April 2020

Klampok River is a river that is geographically located in Semarang District. It flows from Sidomukti Village, Bandungan Sub-District to Pringsari Village, Pringapus Sub-District. The fact that population growth and a large number of human activities such as household chores, agricultural (husbandry) and industrial works have eminently impacted on the quality of Klampok River’s water, it has motivated this research to be conducted. Generally, river has its inherent capacity to purify itself on certain defilement condition. The main aim of this study is to determine (discern) the ability of Klampok River’s to self-purify based on DO and BOD parameter by using Streeter-Phelps method to obtain oxygen sag curve and Qual2KW program to simulate the water quality. In this study, the value of deoxygenation constant K= 0, 226 and the reaeration constant R= 0, 162 on segment 2 and K= 0, 226 and R=0, 217 on segment 3 would be gained. Based on that result, we found the purification constant fs= 0, 717 on segment 2 and fs= 0, 956 on segment 3, in which segment 2 functions as active decomposition zone and segment 3 as recovery zone.
Seashore Community Engagement Program for A Clean Seawater at Banyu Biru Village
Authors: Kurnianti L , Setiani H , Ramadianti S H , Sari R F
Published: April 2020

This paper present the community engagement program conducted at Banyu Biru Village in Banten, Indonesia related to seacoast waste and water quality. Banyu Biru Village has a potency to increase its economic gain from tourism. The aim of our community engagement program is to collect the water and seacoast waste database. These data can be used as a benchmark for evaluating the environment based on BlueMetric indicators created by Universitas Indonesia. The results of socialization and outreach activities revealed that majority of respondents aged 26-35 years old (30%), female (100%), having elementary education background (86.7%), and unemployed (70%). Other measurement results show that most respondents have fair of knowledge about seawater pollution (56.7%), fair attitude (56.7%), and implemented the organic waste management (53.3%). The types of waste that have been processed by some residents of Banyu Biru Village are organic waste by burning. To increasing the knowledge, attitudes, and behaviours are needed so the goal of protecting the environment from the danger of water pollution can be achieved. It is hoped that the BlueMetric program can be carried out sustainably and can also be applied in other regions in Indonesia.
Sustainable Community Empowerment Through the Program of Self-Sufficient Village of Non-Rice Food in Raanan Baru
Authors: Palapa T M , Yalindua A , Maramis A A
Published: April 2020

Raanan Baru Village has potential in the field of agricultural food crops such as lowland rice, field rice, corn, peanuts, cassava, sweet potatoes, and taro. This potential is less manageable to the maximum because of various problems, such as: cropping systems are still traditional and hereditary, food production is still low, farmers are lack in innovation and limited in creation of agricultural products, non-rice food plants grow wild and not cultivated commercially, farmers’ knowledge related to market access and opportunities is limited, and many other problems. To address these problems, a community service,Program Pemberdayaan Desa Mitra(PPDM) scheme has been carried out for three years (2017-2019) with a focus on developing Raanan Baru Village as a non-rice food independent village. Methods of implementation include: socialization, technical guidance, training, pilot projects, and workshops. The applications of science and technology includes: techniques for cultivating non-rice food crops, improving the quality and diversification of non-rice food crop products, and introducing the basics of entrepreneurship for farmer group partners. Implementation of the activity showed an increase in the competitiveness of non-rice farming products (cassava), an improvement in the existence of natural resources, and an increase in community welfare.
The Effects of Environmental Knowledge, Environmental Concern, and Green Brand Image on Green Purchase Intention with Perceived Product Price and Quality as the Moderating Variable
Authors: Qomariah A , Prabawani B
Published: April 2020

In recent years, public awareness and concern of green products have begun to increase. People are starting to pay attention to the ingredients in all the products they use. This condition triggers companies to create beauty products that are environmentally friendly and safe to use. This study aims to determine and explain the effects of environmental knowledge, environmental concern, the green brand image on green purchase intention with perceived product price & quality as a moderating variable. The type of this research is explanatory research with a quantitative approach. The sample used was 100 visitors of The Face Shop at Ciputra Mall Semarang. The sampling technique used was purposive sampling and accidental sampling. Data collection methods used were physical questionnaires and online questionnaires. Data processing using SmartPLS 3.2.8. The results of this study indicate that green brand image and the perceived product price & quality significantly influence the green purchase intention. While environmental knowledge and environmental concern do not significantly influence green purchase intention. The moderation type of perceived product price & quality of environmental knowledge is a quasi-moderator. Whereas the moderating type of variable perceived product price & quality towards environmental concern variables and green brand image is an antecedent.
Development Of Transit Oriented Development (TOD) in Semarang City
Authors: Kristianto A C , Ismiyati  , Setiadji B H
Published: April 2020

One strategy to support traffic congestion in the transit space utilization area is by applying the concept of transit-oriented (Transit Oriented Development). The purpose of this research is to identify the potential area of TOD in Semarang, to analyze the needs of developing the TOD area, and to formulate the direction of the development of the TOD area. The analytical method is a quantitative descriptive method, supported by map overlay. Data collection techniques were carried out by primary survey through questionnaires, interviews and field observations, while secondary surveys by collecting data from institutions and related literature. The analysis consists of TOD analysis, classifying regional potential, analysis of TOD development needs, and analysis of the embodiment of TOD area. Based on the results of location negotiations, the potential TOD area in Semarang City is in the Simpanglima Region. The implementation of TOD concept in the Simpanglima Region is expected can improve the accessibility and mobility, reduce the congestion, reduce the environmental pollution, as well as improve the efficient use of energy in the transportation sector.
The Impact of Living Wall on Building Passive Cooling: A Systematic Review and Initial Test
Authors: Nugroho A M
Published: April 2020

In an attempt to provide a passive cooling effect, living walls (LW) gain more attention from architects, engineers, building planners and researchers. Several types of research proved that living walls could contribute to enhance and restore the urban environment and improve thermal buildings performance.This paper aims to provide a literature review for all different LW systems in order to identify and systematize their primary application, method and performance. This review paper organizes and summarizes the literature on LW when it is used as air temperature reduction for passive cooling in buildings. Thermal performance remains the most prevalent theme compared to others, representing almost half of all publications (53 out of 123), with the top three most highly-cited articles all related to airt temperature, energy and pollutant reduction of LW. Continuing to evaluate the contribution of current LW systems to improve buildings temperature reduction and comparing the environmental impact of these systems with other passive cooling strategy. This paper reviews existing methodologies for evaluating thermal performance in a tropical climate and makes suggestions of potential LW for optimum temperature reduction. Corresponding to the initial test, it can be concluded that LW provides great potential in increasing building energy saving by passive cooling.
Biogas Generation during Anaerobic Composting of Organic Waste
Authors: Syafrudin S , Samadikun B P , Wardhana I W , Rizaldianto A R
Published: April 2020

The amount of solid waste in Indonesia is increasing gradually, with the final treatment facility in the Jatibarang Landfill. One of simple method to reduce the waste quantity is composting. This study used two types of waste, which are leaf waste and food waste, in the composting process. Anaerobic process was chosen to maximize the potential of biogas generation. The anaerobic composting was conducted in duplicate to lower the deviation standard of the study. All of the parameters experienced its peak in day 14, which was in thermophilic condition. The temperature was greater than 55°C, with leaf waste reached 56.22°C while food waste 58.78°C. The moisture content in day 14 was in the lowest condition, lower than 50% in both reactors but the composting process in leaf waste was generally happened in <50% moisture content. Meanwhile, the pH value of both reactors were still ranged the optimum content (6 – 8). The methane gas that has been obtained in this study was greater in food waste than leaf waste. Food waste generated 52.54 µg/m3 of methane gas while leaf waste produced 48.19 µg/m3. However, the impurities of methane gas can be investigated further to identify the best heat value of biogas.
Land suitability evaluation for cocoa (Theobroma cacao L.) in Gantarang sub district, Bulukumba, Sulawesi Selatan
Authors: Aini L N , Mappiasse M F , Mulyono
Published: April 2020

Gantarang Subdistrict is one of the largest cocoa land areas in Bulukumba Regency, South Sulawesi. However, the production of cocoa plants in Gantarang Subdistrict has not been optimal yet. Therefore, an effort is needed to evaluate cocoa land by establishing land characteristics as a basis for determining the suitability of cocoa plants in Gantarang Subdistrict. This research was conducted using a survey method with the purposive sampling technique through the collection of primary data and secondary data. Data obtained were analyzed using the matching method between land quality and land characteristics as parameters with the criteria of land suitability class. The results showed that the land characteristics in Gantarang Subdistrict varied greatly. The actual land suitability for cocoa plants in Gantarang Subdistrict at the sub-class level based on FAO criteria differs widely. Based on the sub-class level there are 5 actual land suitability classes, which are S3rc, S3nr, S3na, S3eh, and Nrc. Improvements that can be made include adding organic matter, fertilizing, making terracing and conservation. After the improvement, the potential land suitability classes that can be achieved are S2, S3, and N with the biggest limiting factor is by rooting media factor; the rest is by danger of erosion and land preparation factors.
Revealing the proteomic profiles of antianthracnose-related proteins in Serratia plymuthica UBCR_12
Authors: Aisyah S N , Harnas H , Jamsari J
Published: April 2020

Capacity of Serratia plymuthica UBCR_12 in suppressing Colletotrichum gloeosporioides is regulated molecularly through protein expression. Efficacy of this bacteria is greatly affected by various environmental factors. This study was aimed to investigate the expression profile of antianthracnose-related proteins in S. plymuthica UBCR_12 under different modified medium. Antagonistic activity against C. gloeosporioides was assessed using agar spot method in PDA medium supplemented with several concentrations of peptone or glucose. Co-culture was performed under the same condition as an antagonistic assay to induce the extracellular proteomes expression related to this antianthracnose trait. Proteome profiles were visualized using SDS-PAGE and 2-DE, then a highly differential protein spot was further analyzed using MALDI-TOF-MS. Prediction of protein classification and possible hypothetical pathway were performed in-silico. The highest suppression (42.3% at 9th-day post application) resulted in 2% glucose-supplemented medium, however 2% peptone-supplemented medium conferred a quicker suppression (at 5th-day post application) with quite lower inhibition efficacy (40%). Differential expression of 42 kDa protein band recorded during peptone addition was predicted to be flagellin protein, which might correlate with a rapid stimulus of suppression activity. This protein involved in the quorum-sensing mechanism by triggering the greater rate of cell division resulting in bacterial colonization and motility approaching the fungal pathogen.
Screening of environmental stress tolerant superior sugarcane (Saccharum officinarum L.)
Authors: Aristya G R , Kurniawan F Y , Prabowo H , Kasiamdari R S
Published: April 2020

Sugarcane (Saccharum officinarum L.) is among the important commodities of the commercial sector since it accounts for 65% of the world’s sugar production. Indonesia is the world’s eighth largest country in terms of productivity, planting area and yield of sugarcane. Environmental stresses due to climate change are among factors that may cause negative impacts on the production of sugarcane. The purpose of the present study was to determine sugarcane cultivars tolerant to environmental stress based on a multiplex analysis of SCDR 1 and P5CS, as well as sugarcane defense mechanisms against environmental stress conditions. The methods used in this study were quantitative test with spectrophotometry, qualitative test with electrophoresis, DNA amplification of the target SCDR 1 and P5CS by the PCR method. The presence of these two genes in the tested sugarcane cultivars indicates a tolerant trait of environmental stress. The study found that 24 tested sugarcane cultivars are potentially tolerant to environmental stress due to the presence of those two genes.
Seed priming alleviates crop growth inhibition by salinity
Authors: Budiastuti K , Chalida N , Mohamad N E A P , Tohari
Published: April 2020

Salinity has become one main obstacle in increasing marginal land crop productivity. Several attempts have been made to deal with salinity. This study aimed to alleviate rice and soybean growth inhibition as caused by salinity, using seed priming during pre-sowing. The factorial Randomized Completely Block Design was used in both experiments. First experiment examined the effects of seed priming using four levels of NaCl concentrations, i.e. 0.2, 150, 300 and 450 mM NaCl on the growth and yield of two rice varieties (Dendang and IR 64) in salinity. Whereas in the second experiment, the effects of seed priming using three levels NaCl concentrations, i.e. 0, 40 and 80 mM were tested on three soybean varieties (Anjasmoro, Dering and Grobogan) under salinity. The results of first experiment showed that the two rice varieties responded differently to seed priming treatments. Seed priming using 150 mM NaCl increased leaf and root surface area as well as yield in IR 64 variety. However, Dendang (the salt tolerant variety) was less responsive to seed priming compared to IR 64. Similar results were also found from the second experiment. Among three soybean cultivars, only Dering (the salt sensitive variety) which showed a positive responses to seed priming up to 80 mM NaCl.
Land suitability for soybean (Glycine max (L.) Merill) in sandy coastal land of Parangtritis, Bantul Regency
Authors: Budiyanto G , Aini L N , Sari S A
Published: April 2020

Outdoor research was conducted in the coastal region of Parangtritis from December 2015 up to April 2016, with the purpose is to determine the soil characteristic of coastal land of Parangtritis and its suitability for soybean cultivation. This research was conducted using the observation method by collecting primary and secondary data. Primary data were soil characteristics which determined using the laboratory analysis procedures, while secondary data were supporting information obtained from local government agencies. The results showed that the coastal land of Parangtritis had a sandy texture, very fast soil drainage, the effective depth of low to moderate soils, low salinity, low cation exchange capacity, percentage saturation of medium to high bases. Based on the results of the analysis of primary and secondary data, actually the sandy land of Parangtritis is categorized into land suitability class S3r-1; r-2 for soybean plants, with soil drainage and texture as a limiting factor. Potentially, to reduce the negative effects of existing limiting factors, the addition of large amounts of organic matter, in-organic amendments, and NPK fertilizer is highly recommended.
Performance of shallot (Allium cepa var. ascalonicum) derived from true seed under a dry condition area
Authors: Devy N F , Setiyani R , Hardiyanto  , Puspitasari
Published: April 2020

To reduce the dependence of bulbs as planting material, the innovation technology of shallot (Allium cepavar. ascalonicum) cultivation with using true shallot seed (TSS) as planting material was tried. Four cultivars namelyBima Brebes, Trisula, Tuk Tuk,andSanrenwere planted at Laleten Village, Malaka District, from April to December 2018. TSS seedlings were raised with a 10x15cm planting spacing or 2,000 plants/30m−2. The aim of this research was to evaluate the using TSS at the shallot cultivation in the areas where the farmers have never carried out such technology. The vegetative growth of all varieties is not significantly different. The productive plants are range from 70 to 75% of population, which the highest was Trisula. The bulbs number/plant highest inBima Brebes. The number and fresh bulbs weight/bed were 2,293 – 4,601 bulbs and 19.8 – 31.5kgs, respectively. Bulbs weight loss during storage was about 48-65%, which the driest bulbs was Tuk Tuk. The estimated of fresh production was only 5.28 to 8.41 tons/ha. It means that in dry conditions with farmers have not mastered yet on shallot cultivation by using TSS as planting material, the productivity only reaches 20-40% of the production capacity.
Detection of promoter designed for transgenic plant in local soybean
Authors: Genesiska  , Suratmi R C
Published: April 2020

Potential risk of allergenic, toxic, and dietary risks from Genetically Modified Organism (GMO) has become critical issues. The transgenic soybean of United States has commonly been exported to countries around the world, including Indonesia. Unfortunately, there has not yet been any label given to packaging product of Genetically Modified Organism (GMO) including soybean grain sold in Indonesia. The aim of the study was to detect promoter of Cauliflower Mozaic Virus 35 S which potentially indicate the transgenic plants. Samples used in this research were 12 different brands of soybean sold in the 4 local markets. Screening of CaMV 35 S genes was done by Polymerase Chain Reaction (PCR) methods using specific primers. The result indicated that positive signals detection refers to transgenic plants in the local soybean grains with the amplification area of 123 basepairs.
Morphological characters of kepel (Stelechocarpus burahol) from Kulon Progo, Yogyakarta, Indonesia
Authors: Handayani E , Nandariyah  , Cahyani V R , Parjanto
Published: April 2020

Kepel is a rare plant that becomes the identity plant of Special Region of Yogyakarta and often used as natural perfume and bio-pharmaceutical. This research was conducted to identify the vegetative characterization of kepel and to determine the variety of kepel in Kulon Progo Regency, Special Region of Yogyakarta, Indonesia. The study was conducted from December 2018 to March 2019. The research method used was survey method with sampling purpose in 12 sub-districts in Kulon Progo. Kepel plant that have produced fruits, healthy, and normal growth were used as samples. Each plant was observed and the vegetative parameters were measured including the trunk, the leaf, and the canopy. The observation variables according to the description for Annonaceae. The data were analyzed using cluster analysis. Morphological characters from 36 samples in Kulon Progo had a high diversity based on similarity analysis in 14 variables with coefficient of similarity 35-92%. There are four clusters with a similarity level of 49,5%. Cluster 1 has 10 samples (27.78%), Cluster 2 has 22 samples (61.11%), Cluster 3 has 2 samples (5.56%), and Cluster 4 has 2 samples (5.56%). Kepel Wates5 is expected to be a high-yielding variety based on the number of tubercles and tree age.
Influence of sucrose and Acetobacter aceti adition to acetic acid content on coconut water vinegar
Authors: Hernani  , Mangunwardoyo W , Hidayati M D , Miskiyah
Published: April 2020

Vinegar can be made from coconut water through a fermentation process in two stages, namely alcohol fermentation used yeast in an anaerobic state and acetic acid fermentation using Acetobacter aceti in aerobic. The present work was to investigate the influences of sucrose addition on alcohol fermentation and Acetobacter aceti on acetic acid fermentation to the acetic acid and phenol content of product vinegar. Method of the experiment was used in a completely randomized design by factorial with two replications. The first factor was sugar concentration (A) consisting of 2 levels i.e 15% and 20%, whereas the second factor was the concentration of inoculum of A.aceti consisting of 3 levels i.e 10%, 15% and 20%. Observations determined for ethanol content, pH, specific gravity, acetic acid andand phenol content. The results showed that ethanol and acetic acid contents tended to increase, and the pH value decreased, while the specific gravity almost constant. Then, for acetic acid fermentation was showed increasing the acetic acid content for all treatment in days 49, especially for the addition of 15% sucrose and 10% A.aceti.
Ability of Trichoderma harzianum in carbon fiber and silica nano particles formulation to control Fusarium oxysporum in vitro
Authors: Hersanti  , Djaya L , Ilahiyyat I , Ruhyaman R R
Published: April 2020

Basal rot disease caused by Fusarium oxysporum f. sp. cepae is one of the major diseases that cause yield loss on shallot. Utilization of biocontrol agents can be applied as an environmentally safe control method. The antagonistic microorganism that has the potency to control fusarial diseases is Trichoderma harzianum. A carrier is required in preparing a formulation of this antagonistic fungus as a biocontrol delivery system (BDS). Carbon fiber was proven suitable as a carrier of some antagonistic bacteria. A formulation can also be supplemented with plant micronutrient. Addition of silica nano particles (Si NPs.) in the formulation did not reduce the viability of the antagonistic bacteria. An experiment was carried out to determine the ability of T. harzianum in the formulation with carbon fiber and Si NPs. to suppress the in-vitro growth of F. oxysporum. The experiment was arranged in the completely randomized design with 5 treatments and 5 replications. The treatments were challenging F. oxysporum by T. harzianum in different composition of formulation on potato dextrose agar. The compositions consisted of T. harzianum + 0.5% Si NPs., T. harzianum + 1% Si NPs., T. harzianum + 0.5% Si NPs. + 5% carbon fiber, T. harzianum + 1% Si NPs. + 5% carbon fiber, and T. harzianum only (control). The results showed that each treatment with T. harzianum in the formulation of carbon fiber + various concentrations of Si NPs. was able to suppress the in vitro growth of F. oxysporum by 58.39-60.92%. The BDS with carbon fiber and Si Nps. did not significantly reduced the ability of T. harzianum to antagonize F. oxysporum. The control treatment of single T. harzianum caused the highest suppression on the growth of F. oxysporum, up to 60.93%..
Bacteria analysis as plastic biodegradation agent and biofertilizer
Authors: Ikhwan A , Nurcholis M
Published: April 2020

Several bacteria have been observed as tolerant to the plastic waste according to previous studies. However, its ability as in biodegradation of plastic and biological fertilizers has not been previously tested. Therefore this research is intended to test the potential ability of these bacteria as in biodegradation of plastic waste and biological fertilizer by using Gas Chromatography-Mass Spectrophotometry (GC-MS) technique. According to GC-MS analysis results on SP6 isolates as plastic-tolerant bacterial models, have obtained 5 specific secondary metabolites which act as biodegradation of plastic with the composition as follows: Malic acid (𝐶4𝐻6𝑂5) 1.85%, Xanthine (𝐶5𝐻4𝑁4𝑂2) 1.08%, Myo inositol (6𝐻12𝑂6) 1.32%, γ Glutamyl alanine (𝐶8𝐻14𝑁2𝑂5) 0.85% and Ribitol 5 phosphate (𝐶5𝐻13𝑂8𝑃) 1.30%. In addition, the isolate was also able to synthesize several phytohormonesan indicator for potential use as biofertilizer-with the composition as follows: α Aminobutyric acid3 (C4H9NO2) 1.20%, Indoleacetic acid (C10H9NO2) 1.85%, Kinetin (C10H9N5O) 1.19%, Kinetin glucoside (C16H19N5O7) 1,19 % and Benzyladenine 9 glucoside N6 (C18H21N5O5) 1.31%. It is therefore, the bacterium has a double potentiality not only to degrade plastics, but also to be used as a bio-fertilizer.
Innovation of fruit coating with antifungal yeast to maintain the quality of postharvest strawberries
Authors: Indratmi D , Octavia C T N
Published: April 2020

Postharvest strawberries have a relatively short shelf life and the quality of fruit is rapidly declining, especially with a history of high gray mold fungus attacks during cultivation in the garden. The attack rate of fruit rot is high in the garden, causing the surface of strawberries to be colonized by pathogenic spores which results in strawberries becoming susceptible to postharvest disease. One of the main diseases of postharvest strawberries is gray mold rot caused by Botrytis cinerea. Fruit coating is one of the innovations used to extend shelf life and maintain the quality of fruit stored at room temperature. Coating of fruit with natural ingredients is still little researched, especially made from yeast. The aim of the study was to determine the effectiveness of coating postharvest strawberries with antifungal yeast at various levels of maturity on the quality and shelf life of strawberries. The results showed coating strawberries with yeast Debaryomyces hansenii was able to maintain the quality of the fruit, increase the shelf life of the fruit, and protect the fruit from the attack of postharvest pathogens with parasitism mechanism, without reducing the quality of fruit, so that it can be applied after the harvest of strawberries.
Diversity and phytochemistry analysis in zodia plants organs (Evodia suaveolens)
Authors: Iriani F , Yanuastri P W
Published: April 2020

The Zodia is one of the Indonesian plants from Papua, designated as biophytopharmaca because of its efficacy in preventing mosquito bites in the human body. The variety of types and levels of these organic compounds found in each organ of the plant zodia is the purpose of this study. The results showed that zodia plants dominated by hexane compounds were found in root bark (40.9%), stem bark (81.1%), leaves (88.2%), and seeds (90.2%). Then followed by benzene compounds respectively in the root bark organ (58.1%), stem bark (3.5%), seeds (1.5%), and leaves (1.9%). The total types of phytochemical compounds contained in the root bark organ (43 types), leaves (23 types), stem bark (18 types), and seeds (13 types). The special phytochemical found in root bark is Aristolone, in stem bark is Longiverbanon or Vulgarone B, in leaves is Evodone, and in seeds is Decosane. All types of phytochemicals are detected through GCMS method using GC-2010 and QMS-2010 type GCMS are potential as phytopharmaca if managed appropriately. By knowing the types and levels of phytochemicals found in each organ of zodia, it is expected to continue on drug research opportunity to manage it to be clinically useful for humans.
Precipitation forecasting using neural network model approach
Authors: Iriany A , Rosyida D , Sulistyono A D , Ruchjana B N
Published: April 2020

Neural network constitutes a non-linear model requiring no statistical assumption. Along the development of which, neural network model has been frequently combined with time series and spatio temporal models. This current research combined neural network and spatio temporal models. One of spatio temporal models is GSTAR-SUR model. The weight projected in this current research is cross covariance normalized weight. This sort of weight is deemed suitable for data with high variability. The significant variable in GSTAR-SUR model containing cross covariance normalized weight was used as input layer of neural network model. The hidden layer made use of 10 neurons fulfilling the criteria of the lowest RMSE value and there was 1 neuron used as output. The data were in the form of 10-day precipitations in Junggo, Pujon, Tinjumoyo, and Ngujung, during the period of 2005 to 2014. This research has found out that NN-GSTAR-SUR model yielded better and more accurate forecasting, showing 𝑅2 value of 61.77%.
Growth and yield of various local rice varieties with system of rice intensification irrigation system
Authors: Isnawan B H , Samanhudi  , Supriyono  , Supriyadi
Published: April 2020

The aims of this research to determine the suitability of intermittent and continuous flooding irrigation techniques to reduce water requirements on local rice varieties and to study the response of various local rice varieties to the growth and yield of rice crop. The research has been conducted on the experimental field of the Faculty of Agriculture UMY. The method used the experimental method with 7 x 2 factorial design which arranged in a Completely Randomized Design with 3 replications. The first factor was rice varieties which consist of 7 varieties, i.e. Mentik wangi, Pandan wangi, Mentik susu, Rojolele gepyok, Rojolele genjah, Segoro anak, and Ciherang. The second factor was the method of irrigation consisting of 2 levels, i.e. intermittent irrigation SRI and continuous flooding. The results of the study illustrate that the treatment of varieties influences the growth and yield. Mentik susu variety have productive tiller number much than other varieties, while Mentik wangi variety have root length longer than other varieties. Tiller number, plant dry weight and grain weight shows significant interaction between varieties and irrigation. Conventional and SRI irrigation on Rojolele gepyok variety and Rojolele genjah with SRI irrigation produces grain weight more weight than other varieties.
Study of tricho-compost and rice husk biochar applications to development of Phytophthora late blight diseases and yields of potato plants
Authors: Meilin A , Rubiana R , Hendri J , Primilestari S , Handoko S , Rustam
Published: April 2020

Increasing crop productivity can do through improved cultivation technology by utilizing agricultural waste. This study aims to determine the development of Phytophthoralate blight deseases and yields of potato crops through the applications of tricho-compost and rice husk biochar. Trico-compost and biocharapplication on agriculture has benefits to improving soil quality, enhance crop yield, also reduce carbon and mitigate green house gas emission. Potato varieties used are Granola. Beds covered with plastic mulch, fertilizing using NPK according to recommendations, weeding weeds according to conditions, controlling pests and diseases based on Integrated Pest Control. The difference in technological treatment studied was 1) tricho-compost 10 tons/ha, 2) tricho-compost 10 tons/ha + rice husk biochar 1 ton/ha, 3) tricho-compost 10 tons/ha + rice husk biochar 2 tons/ha, and control(farmer technology without tricho-compost and without rice husk biochar). The environmental design used was a Randomized Block Design (RBD) with 7 replications. Data were analyzed by The F test and further tests used with Duncan. Results showed that the intensity of Phytophthoraleaf deseaseswas lower in potato fields with tricho-compost and rice husk biochar applications. Application of tricho-compost + rice husk biochar 2 tons/ha can increase potato productivity to 27 tons/ha (28.6% higher than farmer technology), and improve the quality of potato tubers, especially XL tubers.
Foliar application of micro cattle bone ash in increasing growth and yield of sweet corn (Zea mays saccharata Sturt.)
Authors: Mulyono  , Hidayat T
Published: April 2020

Cattle bone ash contains high calcium and phosphor that can be used as foliar fertilizer. The foliar application requires particles whose size must be smaller than the stomatal size. The study is expected to increase the growth and the production of sweet corn by applying cattle bone ash to sweet corn through foliar application. The experiment was conducted in a complete randomized design with five treatments; without cattle bone ash application, 0.1 %, 0.2 %, 0.3%, and 0.4% of cattle bone ash concentration. Cattle bone ash dominated with particles smaller than stomatal size and contained high calcium, oxygen and phosphor with little of sodium and magnesium. The result showed that 0.3% application of micro cattle bone ash could enhance leaves area, root dry weight, net assimilation rate, ear weight, and 100 kernels weight of sweet corn.
L-Arginine to inhibit browning on fresh-cut salacca (Salacca edulis Reinw)
Authors: Prabasari I , Utama N A , Wijayanti E P , Hasanah N A U , Riyadi S , Hariadi T K
Published: April 2020

The research aimed to study the effect of various concentration of L-arginine and time of immersion in inhibiting enzymatic browning on fresh-cut Salacca. The experiment was conducted in Single Factor Completely Randomized Design with treatments as follows: (P0) Control, (P1) L-arginine 50 mM and immersion time 5 min, (P2) L-arginine 50 mM and immersion time 10 min, (P3) L-arginine 50 mM and immersion time 15 min, (P4) L-arginine 100 mM and immersion time 5 min, (P5) L-arginine 100 mM and immersion time 10 min, (P6) L-arginine 100 mM and immersion time 15 min, (P7) L-arginine 150 mM and immersion time 5 min, (P8) L-arginine 150 mM and immersion time 10 min, (P9) L-arginine 150 mM and immersion time 15 min. The result showed that L-arginine prevented synthesis of phenolic compound that promotes browning development. However color measurement of fresh-cut Salacca indicated that L-Arginine was able to prevent browning only up to 9 days. Meanwhile various immersion times did not give significant difference in preventing browning. Based on weight loss and hardness analysis, L-Arginine was able to prolong the quality of fresh-cut Salacca. The result in this study will be elaborated and used as a reference to develop non-destructive method using SVM (Support Vector Machine) to analyze the degree of browning on fresh-cut Salacca.
Utilization of safira taro flour (Colocasia esculenta) as addition of natural stabilizers on yoghurt products
Authors: Purwaningsih H , Nuryanti S
Published: April 2020

Yogurt is a processed food biotechnology made from milk that has been fermented by Lactobacillus and Streptococcus lactic acid bacteria that have antioxidant activity. The manufacturing process has decreased water holding capacity (whey off), this is caused by a decrease in pH in the range of casein isoelectric points that affect the quality of the final product. The purpose of this study is to maintain the final quality of yogurt with the addition of natural taro flour stabilizers. The research method used is to compare the concentrations of natural stabilizers of 2.5%, 1.25%, 0.165%, 0.1% and incubation time of 9 hours, 18 hours, 24 hours, 34 hours. Parameters observed: analysis of the physico-chemical properties of yogurt. The results showed the best yogurt with fat content (0.51%), potassium (2354.64 mg / kg), nutrient content (energy 612.8 kcal; protein 12.7; carbohydrate 9.85 g; calcium 120.29 g; phosphorus 223, 5g; Iron 20.3g; Vitamin A 484mg; vitamin B 0.387mg; vitamin C 1.81 mg)), and organoleptics showed that panelists preferred the yogurt variant (sweet taste). The best yogurt is that there is no decrease in water binding capacity by adding natural stabilizers with an incubation period of 24 hours with a 0.1% stabilizer.
Redevelopment strategy of Sambas orange
Authors: Rizieq R , Dianto A , Ekawati  , Widarti S
Published: April 2020

This research aimed to investigate the best redevelopment strategy of Sambas Orange. The fruit was the icon of Sambas Regency. The damaged Sambas orange plants were caused by some factors such as its trade system. There are many farmers who are growing the orange. They are expecting that the fruit become the icon of the place so that it can increase their welfare. This research was conducted in 2018 in Tebas District, Sambas Regency, the center of Siam orange plantation. The sampling was through two stages. The first stage was determining the sample of village through purposive sampling; Segarau Parit was chosen for its large area and high production number. The second stage was determining the sample of farmers through random sampling. SWOT analysis was implemented. The result of research revealed that the required strategy was aggressive Growth-Oriented Strategy.
Decrease of agricultural land and industry growth in Special Region of Yogyakarta
Authors: Rozaki Z
Published: April 2020

Economic development can affect many factors, such as agriculture and industry. These two sectors can significantly affect the economic health. Population growth encourages the employment opportunities to be increased. Industry becomes an area that can provide many job vacancies, but extend the industry is not easy because the side effect often takes agricultural land for operation. Industry in Special Region of Yogyakarta (DIY) is also growing like in other places. The land is changing from agricultural land to other functions. This phenomenon is gradually increasing year by year. This study aims to analyze the correlation between the industry growth and the decrease of agricultural land. The data from 2001 to 2016 were analyzed to know the correlation. The results ilustrate that there are significant correlations between industry growth and the decrease of agricultural land in Kulonprogo District, Bantul District, Sleman District, and Gunung Kidul District which are known as food production centers in DIY. Yogyakarta City does not have many agricultural lands, therefore there is no correlation between the industry growth and the decrease of agricultural land area. Therefore, develope the industry must consider the land that is used for expansion.
Assessment of insect diversity and community structure in the sugarcane plantation in Jambi Province
Authors: Rubiana R , Meilin A
Published: April 2020

Sugarcane can be cultivated in diverse agroecosystems, so it has the potential attack of different pest. The study on the biodiversity of insects in sugarcane plantations at different altitudes has the objective to study the insect community structures that are useful in making decisions in integrated pest control. The study was conducted on sugarcane plantations in the highlands and lowlands areas, i.e Kerinci and Muaro Jambi Regency. The insect sample was identified to morphospecies level. The results showed that the altitude did not affect the diversity of insects in the sugarcane agrosystem, nevertheless the altitude affected the abundance of pests attacked. Interestingly, Sesamia was only found attack the sugarcane in the highlands area. Ants (Hymenoptera) causing hollow stems of plants. The intensity of attacks in the highlands ranges 36 - 76%, while in the lowlands 28 - 40% rate of cell division resulting in bacterial colonization and motility approaching the fungal pathogen.
Effects of exogenous auxin on stem cutting growth of tea (Camellia sinensis)
Authors: Sarjiyah S , Guretna T , Samidjo G S
Published: April 2020

Root growth rate of a stem cutting was affected by the auxin levels absorbed by the stem cutting. Level of endogenous auxin was insufficient to stimulate the root growth, so that exogenous auxin should be applied. As synthetic auxin was highly expensive, natural auxin sources gained more attention recently to be used. This study was aimed to determine the best source of exogenous auxin triggering the stem cutting growth of tea (Camellia sinensis). This research was conducted using a completely randomized design with four replicates of each treatment. Source of exogenous auxin used in this study consisted of both synthetic (IBA and Rootone-F™) and natural (goat urine and shallot tuber extract) types. These exogenous auxins were applied into the tea stem cutting before planting through dipping method. Growth parameters related to root, shoot and leaf development were observed. Data were evaluated statistically using one-way anova. Application of 6.000 ppm IBA enhanced the rooting percentage and leaf area. Increase of root length was found in the stem cutting treated with 10% goat urine. These results suggested that each type of exogenous auxin stimulated the root growth in a different way. Therefore, proportional combination of these auxin sources might provide a greater support on root growth of tea stem cutting.
Factors influencing in implementing rice farming conservation on slope land
Authors: Sholeh M S , Sukma K P W , Suprapti I
Published: April 2020

Farmers in Pamekasan Regency, especially in Pakong Subdistrict, use sloping land as agricultural land. The farmers generally have implemented conservation rules at different levels. This study aims to examine the factors that influence the application level of rice farming conservation on sloping land. The method used in this study is a questionnaire that concern with the level of conservation application and the factors that influence the adoption level of conservation farming. Meanwhile variables of Conservation farming include making terraces, making infiltration channels, planting terrace reinforcement plants, making water drainage channels and utilizing or using natural mulch. Furthermore the influencing Factors include land area (X1), farmer’s age (X2), formal education (X3), non-formal education (X4), land slope (X5), conservation farming knowledge (X6), knowledge of conservation methods (X7), and knowledge of the importance of conservation (X8). The result showed that 65.38% of the sampled farmers had applied conservation with a high level category. Multiple linear analysis of the factors showed that X4, X5, X7 and X8 had a significant effect on the level of conservation farming iplementation for rice plants on sloping land.
Physic-mechanical properties of edible film based on taro starch (Colocasia esculenta L. Schoott) with glycerol addition
Authors: Siskawardani D D , Warkoyo  , Hidayat R , Sukardi
Published: April 2020

Food packaging has substantial roles, such as product protection from microbial contamination, chemical pollution and physical harm. While environmental pollution caused by plastic packaging become concerning, hence there are innovation to produce films that are convenient to decompose. Edible film is a thin layer that serves as food protector, and barriers to the transfer of mass, such as water vapor, and oxygen. Taro tuber is one of the potential raw materials, which has high starch content. While the most edible films that made from starch have deficiencies alike high fragility, therefore plasticizers need to be added. Glycerol addition is more efficient in improving physical and mechanical properties such as tensile strength and elongation, because it improve flexibility, strength to against physical damage, and better transparency. This study aimed to determine the concentrations of taro starch and glycerol effect on edible film physics-mechanical properties. Randomized complete block design factorial (RCBD) with two factors and 3 replications were applied to analyze the data. The first factor was taro starch concentration (2, 2.5 and 3%) and the second factor was glycerol concentration (25, 30, and 35%). The results indicated that there were interaction between taro starch and glycerol concentration to the parameters of tensile strength, elasticity, solubility, WVTR and transparency. Moreover, the best combination treatment was 3% taro starch and 25% glycerol, with characteristics of thickness (0.15 mm), tensile strength (10.63 MPa), elasticity (60.21%), solubility (23.48%), WVTR (25.37 g/m2/24 hours) and transparency (2.23 mm−1).
Distribution of carbon and soil quality in drylands of Aceh Besar, Indonesia
Authors: Sufardi  , Arabia Teti , Khairullah  , Karnilawati  , Fuadi Zahrul
Published: April 2020

The organic matter is an important component of sustainable agricultural systems and as one of the indicators of soil quality. This research aims to estimate the content and distribution of soil organic carbon (SOC) and soil quality index in several soil orders of dryland areas in Aceh Besar Indonesia. SOC of soil was analyzed using the Walkley-Black method while the soil quality index (SQI) was evaluated by using the method of Mausbach and Seybold (1998). The results demonstrated that the contents of soil organic carbon in dryland areas of Aceh Besar District vary from low to very high (0.23-3.95%) depending on soil types. The organic C content on the soil surface, such as Entisols, Inceptisols, Mollisols, Oxisols, Ultisols were generally low (less than 2%), and only Andisols which have a high content of organic C (3.95%). The average organic C content of order of soil are: Oxisols (0,74 ± 0.12%), Ultisols (0.61 ± 0.14%), Mollisols (0.75 ± 0.23%), Inceptisols (0.78± 0.46 %), Entisols (1.76 ± 1.33%), and Andisols (1.82 ± 0.71%) respectively. Soil quality index (SQI) of dryland in Aceh Besar District vary from a low to high with SQI range of 0.45-0.79. To increase the organic matter content and quality of the soils, adding organic amendments and biofertilizers is necessary.
Rainfall forecasting in agricultural areas using GSTAR-SUR model
Authors: Sulistyono A D , Hartawati  , Iriany A , Suryawardhani N W , Iriany A
Published: April 2020

The use of location weights on the formation of the spatio-temporal model contributes to the accuracy of the model formed. The location weights that are often used include uniform location weight, inverse distance, and normalization of cross-correlation. The weight of the location considers the proximity between locations. For data that has a high level of variability, the use of the location weights mentioned above is less relevant. This research was conducted with the aim of obtaining a weighting method that is more suitable for data with high variability. This research was conducted using secondary data derived from 10 daily rainfall data obtained from BMKG Karangploso. The data period used was January 2005 to December 2015. The points of the rain posts studied included the rain post of the Blimbing, Karangploso, Singosari, Dau, and Wagir regions. Based on the results of the research forecasting model obtained is the GSTAR ((1), 1,2,3,12,36)-SUR model. The cross-covariance model produces a better level of accuracy in terms of lower RMSE values and higher R2 values, especially for Karangploso, Dau, and Wagir areas.