Rayhana Bahar
Universitas Muslim Indonesia

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SISTEM PAKAR BERBASIS WEB UNTUK MENDIAGNOSA PENYAKIT PHYTOPHTHORA PADA TANAMAN MERICA DENGAN METODE CERTAINTY FACTOR: A WEB-BASED EXPERT SYSTEM FOR DIAGNOSING PHYTOPHTHORA DISEASE IN PEPPER PLANTS USING THE CERTAINTY FACTOR METHOD Rayhana Bahar; Lilis Nur Hayati; Sugiarti Sugiarti
Rabit : Jurnal Teknologi dan Sistem Informasi Univrab Vol 11 No 2 (2026): Juli
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/rabit.v11i2.7981

Abstract

Phytophthora  sp., is a soilborne pathogen that poses a major threat to the productivity of pepper (Piper nigrum L.) in Indonesia, with estimated yield losses reaching 10–30% in heavily infected plantations. This study designs and implements a web-based expert system using the Certainty Factor (CF) method to diagnose four clinical manifestations of Phytophthora sp. in pepper plants, comprising Stem Base Rot, Root Rot, Leaf Rot, and Fruit Rot. The knowledge base was constructed through structured interviews with a certified plant pathology expert and primary literature review, encompassing 15 clinical symptoms with 38 validated expert CF value pairs. Case study testing yielded the highest CF value for P01 (Stem Base Rot) at 1.0000 (100%), followed by P02 (Root Rot) at 0.9338 (93.38%). Functional validation through Black Box Testing confirmed all system modules operate in accordance with defined requirement specifications. The novelty of this study lies in three aspects: exclusive coverage of four Phytophthora sp. clinical manifestations in pepper within a single platform, integration of user confidence values as dynamic variables in CF computation, and direct presentation of treatment recommendations alongside the corresponding certainty percentage.
Penerapan Awal Pengenalan Teknologi Informasi Deteksi Penyakit Hama Tanaman Vanila pada Karang Taruna Lima Sulapa Lilis Nur Hayati; Asdar Djamereng; Sitti Rahbiah; Rayhana Bahar; Mush'ab Al Mubarak; Putri Bimadayanti; Fitra Ramadani
Dimasejati: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2024)
Publisher : Universitas Islam Negeri Siber Syekh Nurjati Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70095/dimasejati.v6i2.18436

Abstract

EARLY APPLİCATİON OF INFORMATİON TECHNOLOGY INTRODUCTİON OF DİSEASE AND PEST DETECTİON OF VANİLLA PLANTS TO YOUTH KARANG KARUNA LİMA SULAPA GATTARENG İN BULUKUMBA REGENCY. Agriculture is one of the main pillars of the country's economy, contributing significantly to Gross Domestic Product (GDP) and employment. The purpose of the service is to introduce information technology in the detection of diseases and pests of vanilla plants to youth Karang Taruna Lima Sulapa Gattareng in Bulukumba Regency. The problem faced is the lack of knowledge and ability of partners in detecting diseases and pests of vanilla plants. This activity was carried out through three stages, namely preparation, implementation, and evaluation. The socialization was attended by 38 participants who followed the program from start to finish. The results of the socialization activities showed a significant increase in understanding from the pre-test results showed 45.36%, while the post-test results increased to 82.79%. In conclusion, the service program succeeded in increasing partners' knowledge and awareness of the importance of information technology in detecting diseases and pests in vanilla plants.