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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Agro Bali: Agricultural Journal Jurnal Ilmiah Pertanian ( JIPERTA) Jurnal Ilmiah Biologi UMA (JIBIOMA)
Siregar, Rahma Sari
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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Analisis Pemasaran Buah Naga (Hylocereus Polirhizus) Studi Kasus: Desa Teratak Nagodang Kecamatan Ujung Padang Kabupaten Simalungun Fadila, Putri; Tantawi, Ahmad Rafiqi; Siregar, Rahma Sari
Jurnal Ilmiah Pertanian ( JIPERTA) Vol 6, No 1 (2024): Jurnal Ilmiah Pertanian (JIPERTA), Maret
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jiperta.v6i1.3158

Abstract

This article aims to determine the marketing channels for dragon fruit and the efficiency of dragon fruit marketing channels in Taratak NagodangVillage, Ujung Padang District, Simalungun Regency. The Problem focuses on marketing channels and the efficiency of dragon fruit marketing channels. The theoretical references used in reviewing this article are Kotler’s (2015) theory for marketing channels and Su’udi’s (2018) theory with marketing margins. This research is qualitative and quantitative descriptive research. The research sample for dragon fruit farmers used random sampling, while the sample for traders used the census method, and the consumer sample used the incidental sampling method. The results of the research show that there is one level of the channel formed in the marketing of dragon fruit in Taratak Nagodang Village, Ujung Padang District, Simalungun Regency, namely from farmers to collecting traders, then wholesalers, retailers, and finally external consumers. Taratak Nagodang Village is the closest city to Batu Bara and Meranti. The lowest marketing margin for dragon fruit is with a margin percentage of 28% for collecting institutions and for all efficient marketing institutions with a value of 48%. Wholesalers with an efficiency value of 7% are the most efficient institutions.
Isolasi Bakteri Pencemar pada Jajanan Tradisional di Kawasan Jalan Al-Falah Ardepy, Sri; Sartini, Sartini; Rahmiati, Rahmiati; Siregar, Rahma Sari
Jurnal Ilmiah Biologi UMA (JIBIOMA) Vol 6, No 2 (2024): November
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jibioma.v6i2.5176

Abstract

Traditional snack cakes can be contaminated with harmful microbes due to poor hygiene and sanitation practices. This study aims to identify the types of bacteria contaminating traditional snacks sold by street vendors on Jl. Al-Falah. The method used is the pour plate technique on Plate Count Agar for 24 hours at a temperature of 33-35 °C, along with selective media Salmonella Shigella Agar and Eosin Methylene Blue Agar. Observations include both fresh samples and those stored for 24 hours. Confirmation tests were conducted on SSA and EMBA media, followed by SCA (Simmon Citrate Agar). The results showed that six types of cakes exceeded the microbial contamination limits: P1S1 (6.2 × 10⁵ colonies/g), P2S1 (10 × 10⁴ colonies/g), P3S1 (4.8 × 10⁴ colonies/g), P1S5 (5.6 × 10⁴ colonies/g), P2S5 (5 × 10⁴ colonies/g), and P3S5 (8.6 × 10⁴ colonies/g). Out of 15 samples, two were detected to contain pathogenic bacteria: P1S1 was positive for Salmonella sp. and Escherichia coli, while P3S2 was positive for Escherichia coli. In conclusion, the contaminating bacteria Salmonella sp. and Escherichia coli were found in cake samples from different vendors.
Reevaluation of Land Suitability for Soybean Plants in North Sumatra, Indonesia Handayani, Leni; Mazlina, Mazlina; Riyanti, Riyanti; Ilvira, Rika Fitri; Siregar, Rahma Sari
Agro Bali : Agricultural Journal Vol 8, No 1 (2025)
Publisher : Universitas Panji Sakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37637/ab.v8i1.2057

Abstract

This study was designed to reevaluate the adjustment of land suitability classes. This study was conducted in North Sumatra Province, precisely in 4 regencies, namely Simalungun, Langkat, Deli Serdang, and Serdang Bedagai Regencies. The study used land suitability classes. Related to rooting media and nutrient retention parameters, the results of a semi-detailed land suitability study for soybean plants in Deli Serdang, Serdang Bedagai, and Langkat Regencies showed that the land was only marginally suitable (S3 rc, nr). In Simalungun Regency, efforts were made to increase the suitability of potential land to a marginally suitable class with the rooting media factor (S3 rc) and the water availability and nutrient retention factor (S3 wa, nr). This was done by attempting to increase the adaptability of potential land to a marginal suitability class with a water availability factor (S3 wa). The land suitability class in the research area for soybean plants includes the marginal suitability class (S3), so planting soybean commodities results in less than maximum production with limiting factors of rainfall and nutrition retention. To improve nutrient retention by adding organic materials, the limiting factor of rainfall is relatively high by creating drainage channels.
Factors Affecting the Income of Labor Fishermen (Case Study: Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency) Aziz, Rizal; Sihombing, Roni Paulus; Siregar, Rahma Sari; Sihotang, Saipul
Jurnal Penelitian Pendidikan IPA Vol 9 No 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.4530

Abstract

Indonesia is a country that has a very large water area which is a large potential resource to be utilized for national development. This condition affects the strong weak economic activities of the village. The purpose of the study is to find out how much the income of labor fishermen in Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency and to find out what factors affect the income of labor fishermen in Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency. This research was conducted in Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency, North Sumatra Province. This location was chosen intentionally (Purposive). The population in this study was 546 labor fishermen, the determination of the sample in this study used Arikunto's theory, namely if the total population was less than 100 people, then the number of samples was taken as a whole. But if the population is larger than 100 people then it can be taken 10-15% and 20-25% of the total population. The samples in this study were taken as much as 10% of the total population, so the number of samples in this study was 55 labor fishermen. Data collection techniques use primary data and secondary data, data analysis techniques in research use income analysis and multiple linear regression analysis. The results of the research on the working capital costs of labor fishermen amounted to Rp. 244,894/month, with an income of Rp. 4,128,386/month with an average of 12 trips a month of fishing. The results of multiple linear regressions that the working capital variable and the catch variable have a significant effect on the income of labor fishermen while the time variable at sea and experience variables do not have a significant effect on the income of labor fishermen in Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency.
Co-Authors AHMAD RAFIQI TANTAWI Ardepy, Sri Fadila, Putri Leni Handayani Mazlina, Mazlina Rahmiati Rahmiati Rika Fitri Ilvira, Rika Fitri Riyanti Riyanti Rizal Aziz, Rizal Saipul Sihotang Sartini Sartini Sihombing, Roni Paulus