Activity of Ketepeng Cina (Cassia alata Linn) Leaves Extract toCercospora personatum growth

[摘要] Ketepeng cina ( Cassia alataLinn.) was known as vegetal fungicides because it contains toxic materials to fungi. This study aimed to determined the concentration of ketepeng cina ( Cassia alataLinn.) leaves extract that effective in inhibiting the growth of Cercospora personatum and to know the fungicide activity of ketepeng cina ( Cassia alataLinn.) leaves extract on the growth of Cercosporapersonatum.This research was conducted through stage that were manufactured PDA media, isolation of Cercospora sp. and extracting ketepeng cina leaves. Fungicidal activity test was done using poisoning food method with 6 concentration level: 0%, 1%, 2%, 3%, 4%, and 5%. Experiment using Completely Randomized Design with 6 treatments and 3 replications, effect of variance between treatment were analyzed and followed by Duncan's test. The results showed that the concentration of 3% effective in inhibiting the growth ofCercospora personatum . Fungicidal activity of leaves extract ketepeng cina against fungiCercospora personatumcategorized as strong in concentrations ≥ 3% and nature fungistatic.

[学科分类] 化学工程（综合）

[关键词] Cercospora personatum;Ketepeng Cina (Cassia alata Linn.);Vegetal fungicides