IDENTIFIKASI JAMUR PATOGEN Aspergillus sp. (GRP.1), Geotrichum sp. (GRP.2), DAN Pythium sp. (GRP.3) DARI RIZOSFER PERKEBUNAN PEPAYA (Carica papaya, L.) DI SIANTAN HULU, KECAMATAN PONTIANAK UTARA

Abstract

Papaya (Carica papaya  L.) is a fruit-bearing plant from the Caricaceae  family known for its year-round fruit production. However, one of the major threats to its yield is soil-borne pathogenic infections, which are challenging to control and have a broad host range. These pathogens can persist in the soil for extended periods, and some are capable of producing airborne spores, accelerating their spread and posing further challenges to disease management efforts.This study aims to isolate and identify pathogenic fungi present in the rhizosphere of papaya plantations in Siantan Hulu, North Pontianak District. The research methods include purposive sampling for sample collection, isolation using the dilution plating technique, and identification through the Riddell method. The findings revealed the presence of three fungal genera: Aspergillus  sp. (GRP.1), Geotrichum  sp. (GRP.2), and Pythium  sp. (GRP.3), each displaying significant morphological differences both macroscopically and microscopically. These findings highlight the pathogenic potential of these fungi, indicating a significant threat to papaya cultivation and emphasizing the need for effective management strategies.