Article Per Year (5 Year)
p-Index From 2021 - 2026
0.817
P-Index
This Author published in this journals
All Journal JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA SIMBIOSIS
SANG KETUT SUDIRGA
Lab. Struktur dan Perkembangan Hewan, **Lab. Fisiologi Tumbuhan Jurusan Biologi FMIPA Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
In vitro assessment of antifungal activity of cinnamon leaves extract against the Colletotrichum sp. causes of anthracnose on tomato Sudirga, Sang Ketut; Darmadi, Anak Agung Ketut; Wijaya, I Made Saka; Yulihastuti, Dwi Ariani
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.224284-294

Abstract

Tomato is a horticultural plant widely cultivated in Bali. Over the three years, the productivity and quality of this plant have tended to decrease due to pathogen-derived diseases, such as anthracnose caused by Colletotrichum sp. Until recently, control of this pathogenic fungus has relied on chemical-based fungicides, which lead to many long-term complications, including pathogen resistance, environmental pollution, the extinction of non-target microorganisms, and negative impacts on human health. Therefore, alternative methods for plant disease control are urgently needed to combat these pathogen attacks. The use of plant-derived active compounds has been intensively researched worldwide as a more environmentally friendly alternative. The main objective of this research was to investigate the effectiveness of Cinnamomum burmanii acetone extract in inhibiting the growth of Colletotrichum sp., the causative agent of anthracnose in tomatoes, through an in vitro approach. A non-factorial randomized complete design was applied in the experiment. The results showed that the crude extract of cinnamon leaves inhibited the growth of the Colletotrichum sp. with an MIC value of 0.9%, an inhibition zone of 2.55 mm, and an optimal inhibitory concentration of 2%, producing an inhibition zone of 11.10 mm. A GC-MS analysis was conducted to identify the active compounds in the cinnamon leaf extract. Sixteen active compounds were identified, nine of which are known to have antimicrobial activity.
ISOLASI DAN UJI PATOGENITAS JAMUR Colletotrichum spp. PENYEBAB PENYAKIT ANTRAKNOSA PADA BUAH TOMAT (Solanum lycopersicum L.) : ISOLATION AND PATHOGENITY TESTING OF FUNGI Colletotrichum spp. CAUSES OF ANTHRACNOSE DISEASE ON TOMATOES (Solanum lycopersicum L.) Laila Maghfirotun Ni’mah; Sudirga, Sang Ketut; Darmadi, Anak Agung Ketut
SIMBIOSIS Simbiosis Volume 13 No. 2 2025
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2025.v13.i02.p02

Abstract

Tomatoes (Solanum lycopersicum L.) is a fruit with important economic value and is a leading horticultural commodity in Indonesia. Anthracnose is a disease that can infect tomato plants. From previous research, several types of isolates of Colletotrichum spp. Infecting different hosts can cause different disease severity. The aim of this research was to identify the Colletotrichum fungus that causes anthracnose on tomatoes from several gardens in Bali to test its level of pathogenicity. Isolation of the fungus Colletotrichum spp. using the direct planting method. The pathogenicity test uses the disease severity (KP) scoring method using the formula. Identification and morphological characterization of isolates of Colletotrichum spp. using the identification book "Illustrated Genera of Imperfect Fungi". The parameters observed were colony shape, hyphae and conidia characters and disease severity percentage (KP) on tomatoes. This research used a completely randomized design (CRD) and the data were analyzed statistically using the ANOVA (Analysis of Variance) test with SPSS version 26 software. The results of the identification of macroscopic and microscopic characters from PS, BS and SW isolates showed differences in colony, hyphae and conidia characters. The pathogenicity test results of the PS, BS, and SW isolates showed that the SW isolate was the most adaptive and pathogenic isolate. Keywords: Identification, isolate, hyphae, spores, disease severity
UJI DAYA HAMBAT JAMUR Fusarium spp. MENGGUNAKAN EKSTRAK DAUN TREMBESI : JUDUL INGGRIS FUNGI INHIBITORY Test Fusarium spp. USING LEAF EXTRACT OF TTREMBESI Purnamaningsih, Ni Putu; Sudirga, Sang Ketut; Parwanayomi, Ni Made Susun
SIMBIOSIS Simbiosis Volume 13 No. 2 2025
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2025.v13.i02.p09

Abstract

ABSTRACT Production of large red chilies has decreased due to wilt disease. Continuous use of synthetic fungicides will have a negative impact on the ecosystem and health. Vegetable pesticides are one of the environmentally friendly pesticides, because they are easily decomposed in nature. Trembesi (Samanea saman (Jacq.) Merr) is one of the plants that has the potential to be used as a botanical pesticide. This research aims to determine the ability of trembesi leaf extract to inhibit the growth of Fusarium spp. Diffusion well method to determine the inhibitory power of trembesi leaf extract with optimal concentration in vitro. One-way ANOVA test was used to analyze research data. If there is a significant difference (P <0.05), then proceed with the Duncan post-hoc test. The results showed that the control group and the extract treatment group had significant differences (P <0.05). The largest inhibitory zone is a concentration of 20% with an inhibitory zone diameter of 21.37 mm Kata kunci: Extract, inhibitory, antifungal, Fusarium
Co-Authors Anak Agung Ketut Darmadi Dwi Ariani Yulihastuti I Ketut Ginantra Laila Maghfirotun Ni’mah Parwanayomi, Ni Made Susun Purnama Ningsih Rozi, Muhammad Fathur Wijaya, I Made Saka