Rat Taro Extract (Typhonium flagelliforme (Lodd.)) as A Biofungicide Against the Cause of Leaf Fall (Pestalotiopsis sp.) on Rubber Plants (Hevea brasiliensis)

Typhonium flagelliforme or known as rat taro is a herbaceous plant that belongs to the tribe. The results of phytochemical analysis leaves and tuber extracts are contain secondary metabolite compounds belonging class flavonoids, alkaloids, triterpenoids, steroids, saponins, tannins which act antimicrobials. This study aims determine effectiveness leaf, stem (Typhonium (Lodd)) biofungicide against cause leaf fall (Pestalotiopsis sp.) on rubber plants (Hevea brasiliensis). Leaf samples came from at PTPN III Karet Sei Putih, Galan District, Deli Serdang Regency, North Sumatra. Pestalotiopsis sp. was isolated parts showing symptoms. Pieces infected with grown PDA media in petri dish incubated for ±7 days room temperature 26–28oC. After incubation, microscopic identification conidia fungus carried out. In vitro test inhibition power leaves, stems tubers out using culture method. screening showed contained chemical tannins, alkoloids, steroids/triterpenoids. (T. L.) have potential biofungicides, K13 treatment extract 9% best could inhibit growth