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All Journal Indonesian Collaboration Journal of Community Services (ICJCS) Jurnal Teknologi Dan Ilmu Pertanian (TIP)
Rio Stepanus Tarigan
Universitas Katolik Santo Thomas
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Social Sciences Other

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PENGUATAN PERSAUDARAAN DAN KERJA SAMA MAHASISWA BERBASIS NILAI SATU ARAH MELALUI MAKRAB IMKA UNIVERSITAS KATOLIK SANTO THOMAS MEDAN Karisma Erikson Tarigan; Rio Stepanus Tarigan
Indonesian Collaboration Journal of Community Services (ICJCS) Vol. 6 No. 2 (2026): Indonesian Collaboration Journal of Community Services
Publisher : Yayasan Education and Social Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53067/icjcs.v6i2.242

Abstract

Through the Malam Keakraban (MAKRAB) program, which centers on the “Satu Arah” value within the Karo Students Association (IMKA) at Santo Thomas Catholic University Medan, the aim of this community service activity is to enhance brotherhood and collaboration among university students. The activity involved 45 students and took place in November 2025 at the Ojolali Natural Bathing Site in Namorambe District, Medan, North Sumatra. Lectures, group discussions, and question-and-answer sessions were the techniques employed. The results of the activity showed that participants understood the “Satu Arah” value as unity of vision and harmony of steps. They were also able to develop practical ideas for strengthening organizational connections, improving academic achievement, and preserving Karo culture. The activity concluded with a collective commitment to contribute more actively to the organization. In short, MAKRAB based on the “Satu Arah” value effectively fosters collaboration and brotherhood among IMKA students at Santo Thomas Catholic University Medan.
Efektivitas Giberelin Acid (GA3) Terhadap Pertumbuhan Kecambah Kopi Robusta (Coffea canephora) Rio Stepanus Tarigan; Angela Septryani Saragih
Jurnal Teknologi dan Ilmu Pertanian Vol. 4 No. 2 (2026): Jurnal Teknologi dan Ilmu Pertanian
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/tip.v4i2.634

Abstract

The germination of Coffea canephora (robusta coffee) seeds generally occurs slowly due to their hard seed coat, which inhibits the absorption of water and oxygen. One effort to accelerate germination and improve early seedling growth is the application of the plant growth regulator gibberellic acid (GA3). This study aimed to determine the effectiveness of various concentrations of GA3 on the growth of robusta coffee seedlings. The research was conducted from November 2025 to January 2026 using a non-factorial Randomized Complete Block Design (RCBD) with four treatments: G0 (control without GA3), G1 (2 mg L⁻¹), G2 (3 mg L⁻¹), and G3 (4 mg L⁻¹), each replicated four times. Coffee seeds were soaked in GA3 solution for 24 hours prior to sowing. The observed parameters included germination percentage, germination rate, hypocotyl length, plant height, root length, and number of leaves. The results showed that GA3 application significantly enhanced the growth of robusta coffee seedlings compared to the control, including improvements in plant height, leaf number, hypocotyl length, root length, germination rate, and germination percentage. GA3 treatment accelerated the breaking of seed dormancy, resulting in earlier seedling emergence compared to the control. Although GA3 application consistently improved all observed growth parameters, no statistically significant differences were found among the GA3 concentrations (G1, G2, and G3). The application of GA3 increased seed viability, as indicated by a higher percentage of germinated seeds compared to the control.
Co-Authors Angela Septryani Saragih Karisma Erikson Tarigan