https://ejurnal.unima.ac.id/index.php/ibj/issue/feed 2024-12-08T00:00:00+00:00 Yermia Semuel Mokosuli yermiamokosuli@unima.ac.id Open Journal Systems <p><strong>Indonesian Biodiversity Journal (<a href="https://issn.brin.go.id/terbit/detail/1588572808" target="_blank" rel="noopener">ISSN: 2722-2659</a>)</strong> is an open access journal published by Universitas Negeri Manado. Published articles are original research relevant to the field of biology, and reviewed by two reviewers in a blind review. Indonesian Biodiversity Journal, abbreviated as IBJ, publishes research from all fields of biological science, such as biodiversity, ecology, physiology, behavior, molecular biology, biotechnology and biopharmaceuticals. All forms of life, from microbes, viruses, fungi, plants, animals, to humans, are covered in the Indonesian Biodiversity Journal (IBJ). Our Editorial Board members are international and national researchers actively researching in the field of biological sciences, ensuring an efficient, fair and constructive peer review process. The Indonesian Biodiversity Journal is published every 4 months (April, August and December).</p> https://ejurnal.unima.ac.id/index.php/ibj/article/view/10759 2024-12-06T08:20:18+00:00 Noviana Lazar novianalazar@gmail.com Orbanus Naharia orbanusnaharia@unima.ac.id Marthy Taulu marthytaulu@unima.ac.id

<p>Paddy Rice (<em>Oryza sativa</em>) is the main food commodity in Indonesia, because most of the Indonesian population's staple food is Paddy Rice. Demand for Paddy Rice continues to increase from time to time along with population growth. The aim of this research is to determine the types and control of weeds in lowland Paddy Rice plants (<em>Oryza sativa</em>). This research is a qualitative descriptive study using a survey method directly observing weeds in the Paddy Rice planting area in Koya village, South Tondano subdistrict. The results of research on the density, dominance, and frequency of weed types in lowland Paddy Rice plants in Koya Village, South Tondano District show that there are 4 types of weeds in lowland Paddy Rice plants in Koya Village, namely <em>Panicum repens, Fimbristylis litotoralis, Cyperus rotundus</em>, and <em>Pistia stratiotes</em>. P.repens is a grass weed, F.litoralis and C.rotundus are a weed, and P.stratiotes is a broadleaf weed. The type that has the highest relative density (KR) is P. repens, namely 3.33%, followed by F. litoratlis, namely 26.67%, and the lowest is C. rotundus and P. stratiotes, namely 20.0%. Relative Dominance Value The highest (DR) was found in the weed type P. stratiotes, namely 51.56%, then followed by C. rotundus, namely 19.27%, F. litoralis, namely 15.10%, and the lowest, P. repens, namely 14.06%. The highest relative frequency (FR) was in P. repens and C. rotundus, namely 33.33%, followed by F. litoralis, namely 22.22% and the lowest was P. stratiotes, namely 11.11%. Based on the research results, it can be concluded that there are 4 types of weeds in lowland Paddy Rice plants in Koya Village, South Tondano District with the highest weed dominance index value, namely P. stratiotes, namely 27.55787; Weed control can be done chemically, biologically, mechanically and physically.</p>

2024-12-08T00:00:00+00:00 Copyright (c) 2024 Indonesian Biodiversity Journal https://ejurnal.unima.ac.id/index.php/ibj/article/view/10760 2024-12-06T08:34:33+00:00 Devis Christian Pua devispua@gmail.com Yermia Semuel Mokosuli yermiamokosuli@unima.ac.id Harry Maurits Sumampouw herrysumampouw@unima.ac.id

<p>Sago caterpillars are ethnomedically used as food and medicine by the people of several tribes in Indonesia. Sago caterpillar oil contains active compounds, especially fatty acids that have antibacterial potential. Research has been carried out which aims to obtain the bioactive content of sago worm oil and the antibacterial activity of Salmonella typhi and Staphylococcus aureus bacteria. Sago caterpillars are obtained from the Minahasa region. Four to six instar sago caterpillars are used for oil isolation. Analysis of the content of sago worm oil using the Gas Chromatography Mass Spectrophotometry method. Meanwhile, the antibacterial test used the agar diffusion method using pure cultures of <em>Salmonella thypii</em> and <em>Staphylococcus aureus</em>. The results showed that the average sago caterpillar oil was 0.26 to 0.28 ml per head. The results of the antibacterial test showed the highest inhibition of S. aureus at a concentration of 1000 mg/L, namely 8.04 mm, while the inhibition of growth of S. thypii was highest at a concentration of 1000 mg/L, namely 7.69 mm. Sago caterpillar oil has antibacterial potential.</p>

2024-12-08T00:00:00+00:00 Copyright (c) 2024 Indonesian Biodiversity Journal