Jurnal Ilmiah Pertanian https://journal.unilak.ac.id/index.php/jip <p>Jurnal Ilmiah Pertanian (JIP) is an open-access journal that publishes original research articles on the advance of agriculture and the use of land resources throughout the world.JIP is a triannual publication journal, published every March, July, and Dec. It is published electronically via the journal website. ISSN (Print) 1829-8346 ISSN (Online) 2502-5988</p> Universitas Lancang Kuning en-US Jurnal Ilmiah Pertanian 1829-8346 Isolasi, karakterisasi dan uji stabilitas pH bakteriofag Xanthomonas oryzae dari area persawahan https://journal.unilak.ac.id/index.php/jip/article/view/9417 <p><em>The efforts to increase paddy yields are integrated with disease control. Bacterial Leaf Blight (BLB) is a disease that attacks paddy plants caused by Xanthomonas oryzae bacteria. So far, the control carried out by farmers is by spraying bactericides, planting disease-resistant varieties, and rotating plants that are not pathogenic hosts. However, this method of controlling has not obtained satisfactory results. Therefore, we need an alternative option in overcoming BLB disease, namely using bacteriophages as biocontrol agents in infecting Xanthomonas oryzae bacteria. This study explored the potential of bacteriophages isolated from soil samples near paddy plants' root areas and tested their particle's stability. The stages of experiments were soil sampling, isolation, purification, propagation, and pH stability examination. The results showed that the Xanthomonas oryzae bacteriophages had been isolated, purified, and propagated with the coding Kalibening 1 (XB1), Kalibening (XB2), and Kalibening 3 (XB3). The results of the pH stability test on the three samples also showed that the &nbsp;Xanthomonas oryzae bacteriophages experienced particle instability and the titer tended to drop in the pH range of 3-5, while the &nbsp;Xanthomonas oryzae bacteriophages tended to be stable at neutral and alkaline pH 7-11, particularly XB1 and XB2 bacteriophages.</em></p> Desy Mar’atul Fadlilah Andree Wijaya Setiawan Yoga Aji Handoko Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 2022-04-24 2022-04-24 19 2 10.31849/jip.v19i2.9417 Strategy for strengthening social capital for the geographical indication protection community of Arabica coffee: A case study in the South Tapanuli Regency, Indonesia https://journal.unilak.ac.id/index.php/jip/article/view/9399 <p>Arabica coffee is a strategic commodity in Indonesia, especially in the South Tapanuli Regency, where the population of Arabica coffee farmers is concentrated in this area; their coffee product is known for its unique tastes. This opportunity improves agricultural jobs for young millennials interested in coffee. This research aimed to determine the role of farmers’ institutional social capital in supporting Arabica coffee agribusiness and define the strategy used to strengthen social capital in the community to protect the geographical indications protection community (GIPC) of Arabica coffee in South Tapanuli Regency. The methodologies for this research were both descriptive and qualitative approaches. The research used 15 informants from GIPC. The data analysis techniques included data reduction, presentation, conclusion, and verification. Three components were found after analyzing the social capital of GIPC Arabica coffee Sipirok’s institution in supporting the growth of Arabica coffee agribusiness in South Tapanuli Regency; they were norms, trust, and social networking. Therefore, the coffee agribusiness development strategy in South Tapanuli Regency was to strengthen internal GIPC and increase administrators' and members' capacity to consensus or mutual agreement related to GIPC institutional governance.</p> Puji Wahyu Mulyani Yuliana Kansrini Dwi Febrimeli Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 2022-04-24 2022-04-24 19 2 10.31849/jip.v19i2.9399 Morphological characterization of Trichoderma spp. isolated from the oil palm rhizosphere in peat soils and its potential as a biological control for Ganoderma sp. in vitro https://journal.unilak.ac.id/index.php/jip/article/view/9405 <p><em>Trichoderma</em> sp. is a saprophytic fungus found in various environments, one of which is in the rhizosphere of oil palm plants which can be used to control <em>Ganoderma</em> and increase the resistance of oil palm plants from stem rot disease. This study aimed to characterize the morphology of <em>Trichoderma</em> spp. origin of peat land in oil palm plantations in Kampar Regency and screening the potential in controlling <em>Ganoderma</em> sp. <em>Trichoderma</em> spp. from oil palm rhizosphere was collected from the smallholder oil palm plantations in Deli Makmur Village, Kampar, Indonesia. This research was conducted by several observations, such as the hypovirulence test; identification of the morphology of <em>Trichoderma</em> spp. fungus; growth and diameter test of <em>Trichoderma</em> spp. fungus; test of the inhibitory ability of <em>Trichoderma</em> spp. fungus against <em>Ganoderma</em> sp. LPTUNRI-Gan002 isolate; test for hyperparasitism of the fungus <em>Trichoderma</em> spp., which has high antagonistic power against <em>Ganoderma</em> sp. isolate. Six<em> Trichoderma</em> spp. isolates had morphological characteristics similar to two species, i.e., <em>Trichoderma</em> <em>harzianum </em>(LPTUNRI-Trc001, Trc004, Trc005, and Trc006 isolates) and <em>Trichoderma asperellum </em>(LPTUNRI-Trc002 and Trc003). LPTUNRI-Trc003 had the highest diameter (90 mm), growth rate (32.66 mm/day), and the highest ability to suppress <em>Ganoderma</em> sp. LPTUNRI-Gan002 (91.03%) compared to the other five isolates.</p> Rachmad Saputra Fifi Puspita Anthony Hamzah Irfandri Eka Suryani Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 2022-06-12 2022-06-12 19 2 10.31849/jip.v19i2.9405 Karakterisasi keragaman dan analisis kekerabatan berdasarkan sifat agronomi jagung berwarna (Zea mays L.) https://journal.unilak.ac.id/index.php/jip/article/view/9768 <p>Maize has a wide diversity. The diversity of maize exceeds that of any other species and is used and conserved by traditional maize farmers. The way to find information about maize diversity is to evaluate the maize genotype through plant characterization. Plant characteristics include observing the qualitative and quantitative traits to identify and select appropriate parental species for use in forming or developing varieties. This study aimed to examine the diversity of agronomic traits in 12 genotypes of colored maize; Meanwhile, Bonanza (sweet maize) was used as a control. An augmented design with the basic design of a completely randomized design was used as a research experiment. From the agronomic data, cluster analysis between characters was carried out based on the Euclidean distance coefficient using the MVSP application to determine the relationship between genotypes. The observations of quantitative and qualitative traits showed that the characteristics of plant height, seed color, stem color, tassel color, and cob hair had heterogeneous diversity. However, sweetness, cob color, seed type, and seed row arrangement had homogeneous diversity in the male and female flowering age characters. Based on the dendrogram results, the twelve genotypes tested and the control showed that these genotypes were different varieties in one genus, i.e., <em>Zea</em> L. because they had a similarity value above 80%.</p> Firda Lailatus Sa’adah Florentina Kusmiyati Syaiful Anwar Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 2022-06-12 2022-06-12 19 2 10.31849/jip.v19i2.9768