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All Journal Jurnal Sistem Komputer dan Informatika (JSON) PENGABDI: Jurnal Hasil Pengabdian Masyarakat Jurnal Perikanan Darat dan Pesisir (JPDP)
Purnama Wirawan
Universitas Rokania
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Environmental Science Social Sciences Other

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Sosialisasi Teknik Pengendalian Penyakit Pada Tanaman Jeruk (Citrus sp) Di Desa Sangkir Indah Maruli Tua; Purnama Wirawan; Juliarni Juliarni; Arya Widyawan; Tito Yuditiro; Salman Hutagaol; Rahma Fadila Barus
PENGABDI PENGABDI: VOL. 7, NO.1 (2026)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/pengabdi.v7i1.83839

Abstract

Abstrak. Tanaman jeruk (Citrus sp) merupakan komoditas hortikultura bernilai ekonomi tinggi, namun dalam praktik budidayanya sering menghadapi kendala berupa serangan penyakit, terutama yang disebabkan oleh cendawan, bakteri, dan faktor lingkungan. Permasalahan ini juga dialami oleh petani jeruk di Desa Sangkir Indah, Kabupaten Rokan Hulu, yang masih memiliki keterbatasan pengetahuan dalam mengidentifikasi dan mengendalikan penyakit tanaman secara tepat. Kegiatan ini bertujuan untuk meningkatkan pengetahuan dan keterampilan petani dalam mengenali jenis penyakit serta menerapkan teknik pengendalian yang efektif, khususnya melalui pendekatan hayati menggunakan pupuk kompos berbasis mikroorganisme antagonis. Hasil kegiatan menunjukkan adanya peningkatan pemahaman dan keterampilan petani dalam mengenali gejala penyakit serta menerapkan teknik pengendalian yang tepat. Partisipasi dan antusiasme peserta juga tergolong tinggi selama kegiatan berlangsung. Luaran kegiatan ini berupa peningkatan kapasitas petani, terjalinnya kerja sama antara perguruan tinggi dan masyarakat, serta tersusunnya laporan dan rencana publikasi ilmiah. Dengan demikian, kegiatan ini diharapkan mampu mendukung peningkatan produktivitas dan kualitas hasil tanaman jeruk serta kesejahteraan petani di Desa Sangkir Indah.Kata kunci: jeruk, penyakit tanaman, pengendalian hayati, Trichoderma sp, sosialisasi
IoT-Based Real-Time Monitoring System for Post-Harvest Fish Storage Quality Adyanata Lubis; Firman Santosa; Purnama Wirawan
Jurnal Sistem Komputer dan Informatika (JSON) Vol. 6 No. 4 (2025): Juni 2025
Publisher : Universitas Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/json.v6i4.8224

Abstract

This study develops an Internet of Things (IoT)-based system for continuously monitoring the environmental conditions and freshness indicators of post-harvest fish storage. The system integrates an ESP32 microcontroller with a DHT22 temperature-humidity sensor, an MQ-137 ammonia sensor, and an analog pH probe. Sensor measurements are sampled every five seconds, transmitted through Wi-Fi using the MQTT publish-subscribe protocol, stored in a MySQL database through a Node.js backend, and visualized on a React.js web dashboard. A research-and-development design with iterative prototyping was applied, followed by sensor calibration, integration testing, transmission-performance testing, and a 72-hour storage experiment using tuna and snapper samples. The system achieved average accuracies of 97.3% for temperature, 96.8% for relative humidity, 94.2% for ammonia, and 95.1% for pH. Average end-to-end latency was 0.856 s on a local network, 1.230 s on a 10 Mbps Internet connection, and 2.145 s on a 5 Mbps connection. Continuous operation for seven days produced 99.2% uptime. During the storage test, ammonia increased from below 2 ppm to 28.4 ppm while pH decreased from 6.8 to 5.2. The dashboard issued warning and critical alerts when predefined ammonia thresholds were exceeded, demonstrating its capability for timely quality-risk detection.
PEMANFAATAN LIMBAH IKAN LAUT BERNILAI EKONOMIS UNTUK KELESTARIAN LINGKUNGAN DESA MESKOM Purnama Wirawan; Adyanata L Lubis; Firman Santosa
Jurnal Perikanan Darat dan Pesisir (JPDP) Vol 7 No 01 (2026): Jurnal Perikanan Darat dan Pesisir (JPDP) April 2026
Publisher : LPPM Universitas Bina Insan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32767/jpdp.v7i01.663

Abstract

Meskom Village, Bengkalis Regency, is a coastal area where fisheries and seafood processing generate heads, bones, viscera, skin, scales, and trimming residues. When unmanaged, these organic materials deteriorate rapidly, create odour, increase pollution loads, and eliminate potential income. This study formulated a village-scale fish-waste utilization model, prioritized feasible products, and proposed an implementation pathway supporting environmental sustainability. An exploratory case study based on secondary data was conducted through literature synthesis, material-flow mapping, multicriteria assessment, and preliminary economic simulation. The criteria were technical simplicity, capital accessibility, market potential, environmental benefit, and social suitability. Liquid organic fertilizer and fish silage ranked first, with weighted scores of 4.80 and 4.60 on a five-point scale. Fish meal scored 3.75, fish oil 2.95, and collagen/gelatin 2.75. Under a 100 kg waste-per-cycle scenario, liquid fertilizer and silage showed higher revenue-to-cost ratios than fish meal; however, these values are planning simulations requiring validation through pilot production and local price surveys. The model emphasizes source segregation, rapid processing, sanitation, mass-balance recording, quality testing, and group-based enterprise management. A phased approach can reduce organic waste leakage while creating additional income opportunities for coastal households.
Co-Authors Adyanata L Lubis Adyanata Lubis Arya Widyawan Firman Santosa Juliarni Juliarni Maruli Tua Rahma Fadila Barus Salman Hutagaol Tito Yuditiro