Jurnal Online Pertanian Tropik https://talenta.usu.ac.id/jpt <p style="text-align: justify;"><strong>Jurnal Online Pertanian Tropik (JOPT)</strong> is a peer-reviewed journal of the Agriculture Postgraduate Study Program, Universitas Sumatera Utara. Published in Indonesian and English three times a year (April, August, December) with 20 articles per issue, it covers tropical agricultural studies. Hosted by TALENTA Publisher since 2019, JOPT is accredited by the Ministry of Technology Research and Higher Education (No. 21/E/KPT/2018).</p> <p style="text-align: justify;"><strong>ISSN (Print/Online): 2356-4725 / 2655-7576</strong></p> en-US bendayat@gmail.com (Benny Hidayat) nur.saadah@usu.ac.id (Nursa'adah) Tue, 10 Dec 2024 00:00:00 +0700 OJS 3.2.1.5 http://blogs.law.harvard.edu/tech/rss 60 Utilization of temperature control technology to improve the quality of Assyifa Black Garlic at the Utsman bin Affan Islamic boarding school https://talenta.usu.ac.id/jpt/article/view/18183 <p>One alternative way to eliminate the distinctive properties of garlic is through processing, namely heat treatment which can improve the taste and create new qualities of garlic without removing the nutritional components of raw garlic, known as black garlic. However, several times there are often obstacles in fulfilling black garlic which can be produced on a large scale, does not require a long time, and is of high quality. Based on the considerations above, research was conducted on using temperature control technology to improve the quality of Asssyifa black garlic at the Utsman bin Affan Islamic boarding school. The equipment used is a thermolysis device with a capacity of 15 kg to 30 kg. This tool has a design similar to a cake-making oven but has a special rack and pan for garlic production. This research uses a survey method by looking directly at the physical characteristics of garlic processed into black garlic. Apart from that, this research also uses organoleptic tests to measure the quality of black garlic in terms of taste on the tongue. The research results, Black garlic Assyifa which is produced using a thermolysis device using the best temperature control is 70<sup>o</sup>C for 9 days, which has a predominantly sweet taste and a blackish color.</p> Nur Ulina Warnisyah Sebayang, Benny Hidayat, Raju Copyright (c) 2024 Jurnal Online Pertanian Tropik https://creativecommons.org/licenses/by-sa/4.0 https://talenta.usu.ac.id/jpt/article/view/18183 Tue, 10 Dec 2024 00:00:00 +0700 Insect Attraction Associated with Oryza sativa L. on Trap Color Variation in Tountimomor Village, West Kakas District, Minahasa Regency https://talenta.usu.ac.id/jpt/article/view/19496 <p>Rice is an important food crop as the main source of carbohydrates. In Tountimomor Village, West Kakas Subdistrict, Menado, Northern Sulawesi which detection of rice production is disrupted by pest attacks. This study aims to evaluate the effectiveness of color traps in attracting insects on rice plants as an alternative environmentally friendly control. Using a Randomized Group Design (RAK) with 4 treatments (yellow, blue, red, and transparent/control traps), each trap was set on 5 plots. Trapped insects were identified in the laboratory. Results showed yellow traps were most effective with an average of 59 insects, followed by blue (42.4) and red (28.6). Color traps can be an effective and safe insect control solution in paddy plantations in Menado.</p> Susanti Mangansige, Elisabet R.M. Meray, Wilson Moniaga, Ameilia Zuliyanti Siregar Copyright (c) 2024 Jurnal Online Pertanian Tropik https://creativecommons.org/licenses/by-sa/4.0 https://talenta.usu.ac.id/jpt/article/view/19496 Tue, 24 Dec 2024 00:00:00 +0700 An Overview of the Results and Widespread Effects of the Hazelnut Gardens Rehabilitation Project in Ordu Province and Region https://talenta.usu.ac.id/jpt/article/view/19508 <table width="100%"> <tbody> <tr> <td width="71%"> <p>This paper provides a comprehensive overview of the results and widespread effects of the Hazelnut Gardens Rehabilitation Project in Ordu Province and the surrounding region of northeastern Türkiye. The project launched some years ago, aimed to revitalize the region's vital hazelnut industry by addressing challenges such as aging hazelnut orchards, poor agricultural practices, and environmental degradation. The paper examines the multifaceted impacts of the rehabilitation efforts through quantitative data analysis and qualitative interviews with stakeholders. Key outcomes include significant hazelnut yields and quality increases, improved soil health and water conservation, and enhanced economic opportunities for local farmers and businesses. Additionally, the study explores the ripple effects on the region's environmental sustainability, food security, and social fabric. By empowering smallholder farmers, promoting organic cultivation, and fostering community engagement, the project has catalyzed a broader transformation in the way the hazelnut industry operates in Ordu. The findings offer valuable insights for policymakers, agricultural development practitioners, and other stakeholders seeking to replicate or scale up similar initiatives to revitalize traditional crop systems and enhance rural livelihoods. The paper concludes with recommendations for sustaining the project's momentum and maximizing its long-term benefits for the Ordu region and beyond.</p> <p>&nbsp;</p> </td> </tr> </tbody> </table> Tugce DENIZ, Gurkan A. K. Gurdil, Benny Hidayat, Bahadir DEMIREL Copyright (c) 2024 Jurnal Online Pertanian Tropik https://creativecommons.org/licenses/by-sa/4.0 https://talenta.usu.ac.id/jpt/article/view/19508 Tue, 24 Dec 2024 00:00:00 +0700 Evaluation of Land Suitability For Durian (Durio Zibethinus) Plants In Parmaksian District, Toba Regency https://talenta.usu.ac.id/jpt/article/view/16096 <p><em>Durian (Durio zibethinus) is known as a plant that has a fairly high economic value which is widely planted on community land in Parmaksian District, Lauhanbatu Regency, North Sumatra Province. This study aims to evaluate the land suitability class for durian as an agroforestry plant in Parmaksian, Toba Regency. Research activities include several stages of activities, namely: preparation, survey, soil analysis in the laboratory, data processing, and mapping. The survey method was carried out to collect soil samples in the field. Durian land suitability class was analyzed using the matching method. The method refers to the references and criteria adopted from the Soil Suitability of Agricultural Crops by the Center for Soil and Agroclimate Research, Bogor, Indonesia. The results showed that the actual land suitability class for durian plants in Parmaksian sub-district, was marginally suitable (S3) on Land Units 1 and 6 and not suitable (N) on Land Units 2, 3, 4, and 5 with limiting factors. are temperature and soil texture. The results of the GIS analysis show that 52.5% of the total sub-district area is marginally suitable (S3) and 47.8% of the total sub-district area is not suitable (N).</em></p> Simon Haholongan Sidabuke, Rauf Abdul, Harahap FS Copyright (c) 2024 Jurnal Online Pertanian Tropik https://creativecommons.org/licenses/by-sa/4.0 https://talenta.usu.ac.id/jpt/article/view/16096 Tue, 24 Dec 2024 00:00:00 +0700 Identification of the Diversity of Morphological Characteristics of Some Local Upland Rice Cultivars in East Aceh https://talenta.usu.ac.id/jpt/article/view/17868 <p>It is important to characterize the traits of local cultivars both morphologically, physiologically, and genetically. Characterization is a process aimed at identifying important traits economically valuable and beneficial for agriculture or determining the relevant characteristics varieties. The objective of this study was to determine the diversity of several local upland rice cultivars from East Aceh and identifying the morphological characteristics of these cultivars. The research was conducted over 4 months, from October to February 2023, at the experimental field of the Faculty of Agriculture, Samudra University, Langsa City, Aceh, with an elevation of approximately 10 meters above sea level and a soil pH of 5.9. The study used data from both qualitative and quantitative traits, which were tabulated and then analyzed for kinship relationships using IBM SPSS software with hierarchical clustering analysis using Euclidean distance. The results indicated that the testing of several local upland rice cultivars from East Aceh, based on morphological characterization, showed differences in the number of tillers, flower characteristics, panicles, and leaf traits. However, there were no differences plant height, number of productive tillers, leaf blade color, and 1000-grain weight when observing grain weight. Differences in growth and production characteristics were due to interactions between genetic and environmental factors, leading to variability in traits among the tested cultivars. Based on the morphological characteristics of the 10 local upland rice cultivars from East Aceh, the Ramos Gunung and Sibontot cultivars were found to be among the most promising for development due to their highest production yields compared to other cultivars.</p> <p> </p> Retno Ryandini, Syukri Risyad Copyright (c) 2024 Jurnal Online Pertanian Tropik https://creativecommons.org/licenses/by-sa/4.0 https://talenta.usu.ac.id/jpt/article/view/17868 Mon, 03 Feb 2025 00:00:00 +0700