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Biocaster : Jurnal Kajian Biologi
Published by Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu
ISSN : 28083598     EISSN : 2808277X     DOI : https://doi.org/10.36312/biocaster
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology
Biocaster : Jurnal Kajian Biologi (B : JKB), focus to bridge the gap between research and practice, providing information, ideas and opinion, in addition to critical examinations of advances in biology research, teaching, and learning. Through the coverage of policy and curriculum developments, the latest results of research into the teaching, learning and assessment of biology are brought to the fore. Biocaster : Jurnal Kajian Biologi (B : JKB), receiving and publishing article in the form of research and review (scientific article) in the field of biology education and utilization of biological research in teaching and learning. Each article must be linked to the theme "21st century skills in biology education" and / or "Efforts to support the achievements of the goals set forth in the Sustainable Development Goals (SDGs) through biology education". All articles are published in English and under go a peer-review process. The scope of Biocaster : Jurnal Kajian Biologi (B : JKB), is focused on biology education research/review both in topics covered as well as disciplinary perspective : 1) Biology teaching and learning materials at all education levels; 2) Pure Research of Biology developed or studied to the sources, materials, or instructional media Biology (using the Research and Development paradigm/R&D); 3) Curriculum of Biology Education at all education levels; 4) Quasi-experiment, Class Action Research (CAR), and Lesson Study in Biology teaching and learning; 5) Other Qualitative Research of Biology Education; 6) Biology Learning Evaluation/Assessment; 7) Teacher Professional Issues/Trends in Biology Education; and 8) Environmental education.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 218 Documents
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Pengaruh Pupuk Kandang Ayam terhadap Pertumbuhan dan Produksi Tanaman Kacang Panjang (Vigna cylindrica L.) Mustaqim, Adnan; Handayani, Dina; Nusyirwan, Nusyirwan
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1032

Abstract

This study aims to analyze the effect of various doses of chicken manure on the growth and yield of long bean plants (Vigna cylindrica L.). The experimental design used was a Completely Randomized Design (CRD) with four treatments and six replications. Treatments consisted of A (control without fertilizer), B (0.5 kg chicken manure), C (1 kg chicken manure), and D (1.5 kg chicken manure). The variables observed included plant height, number of leaves, number of branches, number of pods, pod length, and fresh pod weight at 14, 28, and 42 Days After Planting (DAP). This study was conducted at the Greenhouse, Department of Biology, State University of Medan. The time of this study was from July to September 2025. The results of the Analysis of Variance (ANOVA) showed that the application of chicken manure had a very significant effect (p<0.05) on all parameters of plant growth and yield. Further DMRT testing results demonstrated that treatment D (1.5 kg of chicken manure) consistently produced the highest yields and significantly differed from the other treatments across all observation phases. It can be concluded that applying 1.5 kg of chicken manure per plot is the optimal dose, significantly increasing vegetative growth and yield of long beans.
Pengaruh BAP (Benzil Amino Purine) dan Ekstrak Tauge (Phaseolus aureus) terhadap Multiplikasi Tanaman Nilam (Pogostemon cablin Benth.) Secara In Vitro Hutagaol, Aprinia; Edi, Syahmi
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1034

Abstract

Patchouli (Pogostemon cablin Benth.) is a promising export commodity, so techniques such as tissue culture are needed to increase its production. This study aims to determine the effect of BAP (Benzyl Amino Purine) and bean sprout extract (Phaseolus aureus) on the multiplication of patchouli (Pogostemon cablin Benth.) in vitro. This study used a factorial Completely Randomized Design (CRD) with 4 levels of BAP concentration (0 ppm, 0.5 ppm, 1 ppm, 1.5 ppm) and 3 levels of bean sprout extract concentration (0%, 12%, 15%), each treatment was repeated 3 times. Data analysis used ANOVA and further testing with 5% DMRT test. The results showed that the administration of BAP significantly affected the increase in the number of shoots, leaves, and roots. BAP concentration of 0.5 ppm gave the best results on the growth of shoots and leaves, but the treatment without BAP actually produced the best growth in the number of roots. The combination of BAP and bean sprout extract significantly affected the number of shoots and leaves. The combination of 0.5 ppm BAP and 15% bean sprout extract produced the highest number of shoots and leaves, producing 2.92 shoots and 4.28 leaves. The interaction between BAP and bean sprout extract creates natural auxin and synthetic cytokinin hormones derived from BAP, which maintain hormonal balance to support patchouli growth.
Identifikasi Cemaran Mikroplastik pada Ikan Nila (Oreochromis niloticus) dan Ikan Puyau (Osteochilus vittatus) di Perairan Waduk Benanga, Samarinda Ramadhan, Yasmin Athirah; Masitah, Masitah; Nasution, Ruqqoyah; Serena, Nelda Anasthasia
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1035

Abstract

Benanga Reservoir in Samarinda serves as a water source, river conservation area, and fishery location that supports local subsistence and commercial activities. However, the suboptimal management of plastic waste around Benanga Reservoir increases the risk of microplastic pollution that threatens human health and food security through fish consumption. This study aims to identify the types and amounts of microplastic contamination in Tilapia (Oreochromis niloticus) and Puyau (Osteochilus vittatus) in Benanga Reservoir waters. The research method is quantitative-descriptive exploratory. Fish samples were taken by purposive sampling method at 4 station points using a net (gillnet), the gills and digestive tract were destroyed using 10% KOH and flotation with 0.9% NaCl to be observed using a light microscope with the help of optilab viewer. Data were analyzed using descriptive statistics. Analysis of 12 fish samples showed the presence of microplastic contamination in all samples with a total of 155 particles including fiber, film, fragment, and pellet forms with various colors and sizes. The average abundance of tilapia is 11.4 particles/tail, while in puyau fish it reaches 14 particles/tail. Cumulatively, the level of microplastic contamination in puyau fish (98 particles) was identified as higher than in tilapia (57 particles), with fiber particles predominating in both species. The presence of microplastics in this local fish population emphasizes the urgency of waste management and pollution mitigation to ensure food security and ecosystem integrity in the Benanga Reservoir.
Persebaran Tumbuhan Obat Sipaet dan Dadap Serep di Kabupaten Tapanuli Utara Menggunakan Model MaxEnt Simamora, Handika Ananda Pudan; Restuati, Martina
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1037

Abstract

Indonesia has great potential in the utilization of traditional medicinal plants, including Sipaet (Tithonia diversifolia) and Dadap Serep (Erythrina subumbrans) which have been used for generations by the people of North Tapanuli Regency. However, data information related to the spatial distribution and ecological existence of these two species is not yet systematically available. This descriptive-exploratory study with a spatial quantitative approach aims to map the spatial distribution, predict the potential existence of Sipaet (Tithonia diversifolia) and Dadap Serep (Erythrina subumbrans) medicinal plants in North Tapanuli Regency. The analysis uses the Maximum Entropy (MaxEnt) model version 3.4.4. The model accuracy is validated using the Area Under the Curve (AUC) value. Based on the results of the Species Distribution Modeling (SDM) analysis using MaxEnt, it shows that Tithonia diversifolia has a high habitat suitability (0.7-0.9), and its distribution is most dominantly influenced by seasonal rainfall and solar radiation, with a model accuracy level classified as good (AUC = 0.812). Meanwhile, Erythrina subumbrans showed moderate to low habitat suitability (0.4-0.6), influenced by average monthly temperature and solar radiation, but with low to moderate model accuracy (AUC = 0.612).
Analisis Kandungan Fitokimia dan Aktivitas Antioksidan Daun Ciplukan (Physalis angulata L.) Berdasarkan Ketinggian Tempat Tumbuh Marpaung, Rivaldi Ariansah; Edi, Syahmi
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1040

Abstract

This study aims to analyze the differences in secondary metabolite content and antioxidant activity in the extract of ground cherry leaves grown in two locations with different altitudes. This study was designed with a descriptive experimental study. The research parameters carried out in the study were secondary metabolite compounds resulting from GC-MS (Gas Chromatography-Mass Spectrometry) analysis and IC50 values ​​were measured using the DPPH (2,2-diphenyl-1-picrylhydrazyl) method. The results showed differences in the content of secondary metabolite compounds and IC50 values ​​of antioxidant activity based on the altitude of the growing place. The extract of lowland ground cherry leaves (Kisaran) produced 13 compounds with a tendency towards carbohydrate/sugar derivatives, such as Melezitose. Meanwhile, the extract of highland leaves (Parongil) produced 11 compounds with a tendency towards alkane derivatives, including Phytol. There was no difference in antioxidant activity influenced by the part of the plant and the altitude of the growing place. The Kisaran ground cherry leaf extract with an IC50 value of 54.46 ppm and the Parongil ground cherry leaf extract with an IC50 value of 98.82 ppm are included in the strong antioxidant activity category. Meanwhile, the Kisaran ground cherry fruit extract with an IC50 value of 120.38 ppm and the Parongil ground cherry fruit extract with an IC50 value of 127.65 are included in the moderate antioxidant activity category.
Pengaruh Pemberian Pupuk Urea dan Pupuk Organik Cair (POC) Batang Pisang terhadap Pertumbuhan dan Hasil Tanaman Pakcoy (Brassica rapa L.) Simanjuntak, Maretta Indah Sari; Suriani, Cicik
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1050

Abstract

Fertilization plays an important role in increasing plant growth and yield. This study aims to analyze the effect of urea fertilizer and liquid organic fertilizer (POC) of banana stems on the growth and yield of pakcoy (Brassica rapa L.). The study was conducted in Serdang Village, Beringin District, Deli Serdang Regency, from January to August 2025 using a 4x4 factorial randomized block design (RAK) with two replications. The treatments consisted of urea doses (0, 4, 5, and 6 g/polybag) and banana stem POC concentrations (0, 60, 70, and 80 mL/L). The parameters observed included plant height, number of leaves, leaf area, total fresh weight, and root weight. Data were analyzed using two-way ANOVA and DMRT test at the 5% level. The results showed that urea fertilizer had a very significant effect on all parameters, while banana stem POC had a significant effect on most growth and yield parameters. The interaction of the two treatments had a significant effect on several parameters. The combination of 6 g urea per polybag and 80 mL/L of fertilizer-free organic fertilizer (POC) yielded the best results, while the treatment without fertilizer yielded the lowest. The combination of urea and banana stem fertilizer proved effective in increasing the growth and yield of pakcoy.
Potensi Tanaman Pekarangan sebagai Tanaman Refugia Savitri, Ni Luh Eka; Yanuwiadi, Bagyo
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1076

Abstract

This study focuses on the potential of yard plants as refugia plants that play an important role in maintaining the balance of the ecosystem in residential areas. Yard plants not only function as aesthetic elements that beautify the environment, but also play an ecological role as providers of microhabitats for various organisms, including natural enemies of plant pests. In the context of applied ecology, the concept of refugia emphasizes the function of certain plants that can provide shelter, food sources, and reproductive areas for predators and parasitoids that play a role in biological control of pests. Therefore, the identification and analysis of the potential of yard plants as refugia are important to support the principle of sustainable environmental management in residential areas. This study aims to analyze the composition and structure of yard plant vegetation, identify the main types of arthropod visitors to dominant plants, and assess the ecological relationship between vegetation and the presence of arthropods. The research methods include vegetation surveys with direct censuses to determine the types and dominance of plants, and observations of arthropods using visual encounter techniques. Data were analyzed descriptively quantitatively to determine the structure of the vegetation community and the intensity of interactions between biotic components. The results showed that the most common types of yard plants were the Lily (Hymenocallis littoralis) and the Balinese Ornamental Pandanus (Dracaena draco), with the highest visitation rate among arthropods in the Formicidae family. These findings demonstrate the ecological potential of yard plants as supporting elements for the conservation of natural enemies of pests. This study emphasizes the importance of optimizing yard vegetation as refugia plants to support biological control systems and increase public awareness of the ecological function of plants in the residential environment.
Unlocking Scientific Reasoning through Ethno-STEM : Mapping the Research Landscape and Future Directions Khoeriah, Ina Ana; Putri, Della Apriyani Kusuma; Yunitasari, Andini Retno
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1104

Abstract

The stagnation of global scientific literacy scores, as highlighted by PISA results, necessitates a paradigm shift toward culturally responsive pedagogies that foster holistic competencies. This study investigates the global trends of Ethno-STEM integration in facilitating Scientific Reasoning and 6C Skills (Character, Citizenship, Collaboration, Communication, Creativity, and Critical Thinking) through the lens of deep learning. Employing a mixed-method approach combining Systematic Literature Review (SLR) with PRISMA protocol and bibliometric analysis, we analyzed 2889 documents from the Scopus database spanning 2015 to 2026. The findings reveal an exponential growth in publications, predominantly driven by Indonesia and the United States, indicating a shift from a "western-centric" to a localized science education approach. VOSviewer visualization unveils a critical thematic evolution: research focus has transitioned from mere documentation of indigenous knowledge (e.g., ethnobotany) to complex pedagogical interventions aiming at cognitive development and digital integration. Theoretically, Ethno-STEM serves as an "epistemological bridge," reducing cognitive dissonance between students' native science and school science. Practically, the study recommends transforming curricula by embedding local wisdom as a core context for Project-Based Learning (PjBL) to nurture high-order thinking. Future research directions highlight the need for integrating immersive technologies (AI/AR/VR) and conducting empirical studies to measure the direct impact of Ethno-STEM on scientific reasoning.

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