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All Journal Biocaster : Jurnal Kajian Biologi
Dina Handayani
Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan, Jalan William Iskandar Ps. V, Deli Serdang, Sumatera Utara 20221, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology

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Pengaruh Pupuk Kandang Ayam terhadap Pertumbuhan dan Produksi Tanaman Kacang Panjang (Vigna cylindrica L.) Adnan Mustaqim; Dina Handayani; 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.
Kajian Etnobiologi pada Makanan Khas Suku Karo di Kecamatan Sibiru-biru Kabupaten Deli Serdang Maria Goreti Perawati Br. Manik; Dina Handayani
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 2 (2026): April
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i2.1042

Abstract

This study aims to document and analyze the traditional food of the Karo Tribe in the seven-monthly ceremony (Mbesur-mbesuri) in the Karo Tribe community in Sibiru-biru District, Deli Serdang Regency. This study was conducted in two villages, namely Biru-biru Village and Rumah Gerat Village, Sibiru-biru District, Deli Serdang Regency. This type of research is descriptive qualitative and quantitative using emic and etic research approaches. Data collection techniques were carried out by participatory observation, interview techniques, documentation techniques, Focus Group Discussions (FGD), plant identification, and animal identification. The results of the study show that the traditional food of the Karo Tribe contained in the seven-monthly ceremony (Mbesur-mbesuri) consists of seven types of mandatory foods that utilize 19 types of plants belonging to 12 families, and 1 type of animal from the Phasianida family. The dominant plant family used in the traditional food of the seven-monthly ceremony (Mbesur-mbesuri) is Zingiberaceae. The most frequently used part of the plant is the fruit, namely 6 types. In terms of plant habitus, herbs are the most dominant species used in the seven-monthly ceremony (Mbesur-mbesuri), with 13 species.
Studi Etnobotani Ritual Erpangir Ku Lau pada Masyarakat Karo di Kecamatan Kabanjahe Kabupaten Karo Dinda Syahfitri; Tri Harsono; Cicik Suriani; Wina Dyah Puspita Sari; Dina Handayani; Ahmad Shafwan S. Pulungan
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 2 (2026): April
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i2.1126

Abstract

The Erpangir Ku Lau ritual is a Karo people's self-purification ritual that has traditionally utilized plants as the main element. This study aims to examine the belief system (cosmos), local knowledge (corpus), and plant utilization practices (praxis) in the Erpangir Ku Lau ritual in Kabanjahe District. The study was conducted in January 2026 in Lau Cimba Village using a qualitative and quantitative descriptive approach through semi-structured interviews with 10 key informants selected by purposive sampling. The results identified 17 species from 11 plant families. The Rutaceae family dominated with 4 species (23.53%), followed by Rosaceae with 3 species (17.65%), and Poaceae with 2 species (11.76%). The most commonly utilized organs were fruits and flowers (29.41%), followed by leaves (23.53%). Shrub habitus dominated with 47.06%. The Karo people view plants as symbolic and spiritually significant, with the kaffir lime (Citrus hystrix D.C.) as a key plant. Plant use reflects holistic local wisdom, combining ecological, chemical, and spiritual aspects. Documenting this traditional knowledge is crucial to prevent its extinction due to modernization.
Co-Authors Adnan Mustaqim Ahmad Shafwan S. Pulungan Cicik Suriani Dinda Syahfitri Maria Goreti Perawati Br. Manik Nusyirwan Nusyirwan Tri Harsono Wina Dyah Puspita Sari