Indonesian Journal of Agricultural Research
Indonesian Journal of Agricultural Research (InJAR) is a peer-reviewed quarterly journal published by TALENTA (Universitas Sumatera Utara's Journals Publisher) and managed by Faculty of Agriculture, Universitas Sumatera Utara. It is based on DIKTI accreditation standard and covers all aspects of agricultural researches including Animal Science and Fisheries, Agribusiness, Agrotechnology and Agricultural Technology. All manuscripts are double-blind refereed before acceptance.
InJAR is published in March, July, and November.
Articles
122 Documents
<![CDATA[Isolation and Identification of Osmophilic Yeast from unripe Jackfruit (Artocarpus heterophyllus Lamk.) ]]>
<![CDATA[Nanik Suhartatik]]>;
<![CDATA[Mimin Nurjanah]]>;
<![CDATA[Kapti Rahayu Kuswanto]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 1 No. 3 (2018): InJAR, Vol. 1, No. 3, November 2018 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v1i3.507
<![CDATA[Osmophilic yeast are microbes that are able to live on media with high sugar concentrations. Some types of osmophilic yeast can break down organic compounds, for example, starch. This research was aimed to isolate and identify existing osmophilic yeast in unripe jackfruits. In this research, the unripe jackfruit was left rotting and 2.5 g of the sample were taken to be solved in 25 ml 0.85% NaCl and diluted. The GYP (glucose-yeast-peptone) agar medium with the glucose concentration of 30–50% was suitable for osmophilic yeast growth. Isolate purification was performed using the streaking method from single colony. Isolates were identified based on physiological and morphological characteristics. The physiological characterization were carried out by running sugar assimilation test on the tool kit API 20C AUX, while the morphological characterization was carried out by performing macroscopic and microscopic observations. Four isolates were assumed to be Candida lambica, 3 isolates were assumed to be Candida rugosa and two isolates were assumed to be Geotrichum candidum. It was found out that 44.4% of yeast in the unripe jackfruit were Candida lambica, 33.3% was Candida rugosa and 22.2% was Geotrichum candidum. Candida lambica was the most common osmophilic yeast found in the jackfruit.]]>
<![CDATA[The Optimization of Pudding Formulation Using Noni (Morinda citrifolia L.) Seen from Antioxidant Content and Sensory Characteristics ]]>
<![CDATA[Kristiawan Prasetyo Agung Nugroho]]>;
<![CDATA[Monika Rahardjo]]>;
<![CDATA[Apfia Jovitatera]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 1 No. 3 (2018): InJAR, Vol. 1, No. 3, November 2018 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v1i3.568
<![CDATA[Noni (Morinda citrifolia L.) is a fruit that known to be effective against many diseases. Its phenol and flavonoid contentacted as antioxidant, anticancer, antiinflamation and to fluent the blood vessel. Because of its content that rich in antioxidant, this research aim to utilized it as a food product. Pudding is one of food product that categorized as a dessert, which in the production does not require heat treatment, so the antioxidant can be maintained. The purpose of this experiment is to find the optimum formulation of Noni pudding seen from antioxidant content and sensory characteristics. The method of this research is total phenolic assay, total flavonoid assay and sensory evaluation from 50 random panelis age between 18-25 years old. The result showed that Noni fruit has total phenolic 0,13423 mg GAE/ml and the total flavonoid 0,11819 mg GAE/mL. The best formulation of pudding resulted from sensory evaluation was found with the addition 10% concentration of Noni extract 10%.]]>
<![CDATA[Analyzing Factors Affecting Farmers' Decisions in Applying Organic Vegetable Farming ]]>
<![CDATA[Kris Indra Sanjaya]]>;
<![CDATA[Tinjung Mary Prihtanti]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 1 No. 3 (2018): InJAR, Vol. 1, No. 3, November 2018 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v1i3.607
<![CDATA[Farming with organic systems is one of the important efforts to support sustainable agriculture. The purpose of this study is to determine the factors that influence farmers to decide to implement organic vegetable farming. This research was conducted in June 2018 until September 2018 in Selongisor Hamlet, Batur Village, Getasan Subdistrict, Semarang Regency. Taking this research was conducted on a non-probability sampling with purposive sampling technique with the required criteria, namely respondents who cultivated in multicultural/intercropping. Samples taken were 60 samples consisting of 30 samples for each system both organic and inorganic. The research analysis used logistic regression, where the independent variables analyzed included age, education level, farm area, farm income, cosmopolitan farmers. The results showed the influence of land area, farmer's income and cosmopolitan farmer's decision making in cultivating organic vegetables.]]>
<![CDATA[Analysis of Smallholders’ Progress in Implementing Sustainable Management in North Sumatra, Indonesia ]]>
<![CDATA[Diana Chalil]]>;
<![CDATA[Riantri Barus]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 1 No. 3 (2018): InJAR, Vol. 1, No. 3, November 2018 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v1i3.677
<![CDATA[The significant increase in oil palm areas has resulted in more concerns to the environmental issues - as majority of farming activities were not conducted in sustainable ways. To address the environmental issues, the Roundtable Sustainable Palm Oil (RSPO) organization has formulated principles and criterias (PnC) for sustainable practices of the oil palm plantation as a guideline, whereby it has to be adhered by all parties involved, including the smallholders. The study is therefore conducted to analyze the sustainable management implementation among smallholders in North Sumatra. In total, 320 and 137 schemed and independent smallholders from four oil palm plantations centers in North Sumatra were interviewed in 2012 and 2018 to see their progress. The levels of implementation for each group were determined based on their scores for each of the criteria, and were compared with the independent sample t-test. The influencing factors for implementation levels were estimated by using multinomial logit model. The results showed that the level of implementation for both schemed and independent smallholders were still low in both 2012 and 2018. Education, experience and participation were identified as factors that significantly influenced their sustainable management implementation levels. Therefore, it is suggested that trainings should be emphasized to improve the sustainable management implemenatation among oil palm smallholders.]]>
<![CDATA[Partial Least Square (PLS) Analysis: The Relationship of Production Management and Business Analysis of Goat Farm in Deli Tua Village, Namorambe District, North Sumatera, Indonesia ]]>
<![CDATA[Mudhita Zikkrullah Ritonga]]>;
<![CDATA[Risdawati Br Ginting]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 2 No. 1 (2019): InJAR, Vol. 2, No. 1, March 2019 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v2i1.689
<![CDATA[Goat farm business provides income both for farmers and the community. Goat farming is very potential because the goats have adult sex and adult body and the length of goat breeding is very short compared to other ruminants. The existence of goat livestock business can create jobs and business that it can help the people’s economy. This study aims to identify the relationship between production management and business analysis of goat farm in Deli Tua Village, Namorambe District, North Sumatera, Indonesia. This study used data from nine respondents who own 25-50 goats that were determined by purposive sampling. The data were analyzed by using Partial Least Square (PLS) method shows a significant relationship between production management and business analysis. Keeping management is production management is a indicators of production management which gives a very influential effect on business analysis]]>
<![CDATA[Economic Analysis of Household Processing Sugar Nagari Bukik Batabuah Agam District ]]>
<![CDATA[Alvindo Dermawan]]>;
<![CDATA[Nofialdi Nofialdi]]>;
<![CDATA[Yusmarni Yusmarni]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 2 No. 1 (2019): InJAR, Vol. 2, No. 1, March 2019 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v2i1.707
<![CDATA[This study aims to describe household economic processing brown sugar and identify the factors that affect decision sugar confection red and household consumption processing brown sugar in nagari bukik batabuah kecamatan canduang kabupaten agam. Methods used are the method survey. Populations are all households processing brown sugar traditionally in nagari bukik batabuah kecamatan canduang kabupaten agam with 528 unit households. A method of the respondents is by means simple random sampling as many as 30 households respondents. Analysis the data used was deskripsitif qualitative. The result of this research is that torrent of working hours in in the processing brown sugar greater than activities outside processing brown sugar so income derived from the sale of red is also greater of income outside activities processing brown sugar of rp.2.581.667 or 82 % household income comes from income brown sugar, their household needs processing brown sugar could not be fulfilled some of their income spent for consumption needs food without capable of savings and invest. Factors that affects decision sugar confection red in nagari bukik batabuah is the number of raw materials, sugar price red and needs of the households, while that affects household consumption processing brown sugar namely household income, the number of family members, and the number of families to that are still at school. Advice provided researchers that is as well]]>
<![CDATA[Analysis of The Integrated Farming Income in The SMD (Sarjana Membangun Desa) Program In Padang City (Case Study: Tani Ternak Sepakat Group) ]]>
<![CDATA[Amelira Haris Nasution]]>;
<![CDATA[Nofialdi Nofialdi]]>;
<![CDATA[Ferdhinal Asful]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 2 No. 1 (2019): InJAR, Vol. 2, No. 1, March 2019 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v2i1.815
<![CDATA[The purpose of this research is to analyze the farming income of farmers who develop integrated farming system after and before getting the SMD Program in Padang City by involving Tani Ternak Sepakat Group as case study. This research was designed as a case study conducted from June 2012 to July 2012 in Kurao Pagang, Padang City, West Sumatera. In this research, the researcher used descriptive qualitative and descriptive quantitative design. The results of this study showed that the integrated farming system through the SMD Program in Tani Ternak Sepakat Groups has implemented the integration between paddy farming and breeding funded by SMD Program. For breeding activity, The Tani Ternak Sepakat group raises both goats and cows. At the same time, the farmer group also cultivates paddy only for integrating between paddy farming and cattle. The integration is done through the use of cattle’s compost as paddy farming fertilizer and the use of paddy’s farming residues for feeding the cattle. However, these practices reduce farmers’ income by 95.12% for the first years of the program. Based on the study, it is suggested that farmers implement waste treatment technology that utilize available resources and to increase their income. Key Word: SMD Program, Integrated Farming System, Farmers Income]]>
<![CDATA[A Sediment Rating-curve Method to Determine Sediment Discharge for Rainy Season in Micro-scale Watersheds ]]>
<![CDATA[Atikah Sitorus]]>;
<![CDATA[Edi Susanto]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 2 No. 1 (2019): InJAR, Vol. 2, No. 1, March 2019 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v2i1.857
<![CDATA[This research was carried out to overcome the problem of the lack of sediment data available in several watersheds in North Sumatra, the lack of available sediment data is caused by the requirement of a large amount of time, cost and risk to obtain such data. Purpose of this study was to obtain the equation of sediment rating curve. The sediment rating curve is an equation that connects the river discharge with sediment discharge, so that to obtain the sediment discharge, it is enough to use the river discharge data. This research used the descriptive method using the primary (sediment discharge and concentration data) and secondary data (climate data). Result of the study obtained the equation of the sediment rating curve of Qs = 14.115 Q2.2736 and the value of R2 of 0.711. The sediment discharge obtained has exceeded the limit set by the Ministry of Forestry regarding the criteria for determination of watersheds.]]>
<![CDATA[Forecasting Model Selection of Curly Red Chili Price at Retail Level ]]>
<![CDATA[Ketut Sukiyono]]>;
<![CDATA[Miftahul Janah]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 2 No. 1 (2019): InJAR, Vol. 2, No. 1, March 2019 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v2i1.859
<![CDATA[Chilli is one of strategic commodity in Indonesia due to its contribution to inflation level. For this reason, future price information is very importance for designing price policy. Future price merely can be provided by conducting a price forecasting. Various forecasting models can be applied for this purpose; the problem is which the best model for forecasting is. This study aims to select the most accurate forecasting model of curly red chili prices at the retail level. The data used are monthly data, from 2011 - 2017. Five forecasting models are applied and estimated including Moving Average, Single Exponential Smoothing, Double Exponential Smoothing, Decomposition, and ARIMA. The best model is selected based on the smallest MAPE, MSE and MAD values. The results show that the most accurate forecasting model is ARIMA (1,1,9).]]>
<![CDATA[Application of Color Sensor in the Determination of Tomato Fruit Ripeness (Solanum Lycopersicum, L) in Gravitation Type Fruit Sorting Tool (Gravitation Type) ]]>
<![CDATA[Fadliansyah Putra]]>;
<![CDATA[Taufik Rizaldi]]>
<![CDATA[ Indonesian Journal of Agricultural Research Vol. 2 No. 1 (2019): InJAR, Vol. 2, No. 1, March 2019 ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/injar.v2i1.862
<![CDATA[Sortation is an important step in handling post-harvest fruits to extend the shelf life and increase the selling value. A tool that is able to sort quickly is needed to speed up the sortation process. Therefore, design of fruit sortationtool using gravitation type and technology to determine fruit ripeness is needed. This study aimed to design and fabricate fruit sorting tool based on the fruit size that could help farmers in sorting fruit. The performance testing was conducted using tomatoes. The results of the design shows that this tool could accommodate 12 kg (equal to 60 tomatoes) of fruit. Tool performance testing shows that this tool could work effectively on a slope of 12˚ withan effective capacity of 133.1 kg/hour (80%). Damage analysis showed that the ripe fruit was more susceptible to damage than the half-ripe fruit due to the fact that half-ripe fruit was still hard, so that the percentage of the damage analysis in ripe fruit was 23.3% and half-ripewas 10%.]]>
