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All Journal Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Journal of Technomaterial Physics
Tua Raja Simbolon
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences

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Liquid Smoke-Based Pest and Disease Control for the Sekar Wangi Farmer Group in Padang Cermin Village, Selesai District, Langkat Regency Kerista Tarigan; Rikson Asman Fertiles Siburian; Tua Raja Simbolon; Leo Ferdinan Hermando Hutabarat; Dewi Jernita Hulu; Natalia Lawolo; Jois Domini; Ramona Sefaca Situmorang
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 11 No. 1 (2026): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v11i1.26139

Abstract

The excessive use of synthetic pesticides remains one of the major challenges in developing environmentally friendly agriculture. This community service program aimed to improve the knowledge and skills of members of the Sekar Wangi Farmer Group in producing and applying liquid smoke as a botanical pesticide. The activity was conducted in Padang Cermin Village, Selesai District, Langkat Regency, involving 20 active farmer group members. The methods included counseling, hands-on training on liquid smoke production through coconut shell pyrolysis, field demonstrations, mentoring, monitoring, and evaluation using pre-test and post-test instruments. The results showed a significant increase in participants’ understanding and practical skills. The average level of knowledge increased from 58% before the training to 89% after the activity. Participants were able to independently produce liquid smoke and apply it as an alternative pest and disease control agent. The program also resulted in a simple standard operating procedure (SOP) for liquid smoke production and application. The activity contributed to reducing dependence on synthetic pesticides while encouraging the utilization of local biomass waste and sustainable agricultural practices.
Preparation and Characterization of Conductive Plastics Using Cassava Peel Waste and Addition of CuSO4 Syahrul Humaidi; Tua Raja Simbolon; Muliyati Muliyati
Journal of Technomaterial Physics Vol. 2 No. 1 (2020): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v2i1.5272

Abstract

This study investigated the characteristics of a conductive plastic based on root starch and CuSO4 filler. The mixture variation was (95:5)%; (90:10)%; (85:15)%; (80:20)% and (75:25)%. Glycerol is used to change the material as desired (plasticizer) which is called a plasticizer. The method used in the manufacture of this material is melt intercalation. Mechanical testing includes tensile strength (tensile strength) and elongation at break. Thermal testing was done using DTA (Differential Thermal Analysis) and material conductivity testing. The characterization results showed that the optimum starch composition: CuSO4 (75:25)% had a conductivity value of 7.3 x 10-2S.m-1, a thermal test value of 410ºC. The optimum tensile strength value occurs in the composition (80:20)% with a value of 4.606 MPa
Co-Authors Dewi Jernita Hulu Jois Domini Kerista Tarigan Leo Ferdinan Hermando Hutabarat Muliyati Muliyati Natalia Lawolo Ramona Sefaca Situmorang Rikson Asman Fertiles Siburian Syahrul Humaidi, Syahrul