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Pinta Omas Pasaribu
Universitas Negeri Jakarta
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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KEANEKARAGAMAN FITOPLANKTON DI DANAU KENANGA UNIVERSITAS INDONESIA, JAWA BARAT Rizal Koen Asharo; Pinta Omas Pasaribu; Vina Rizkawati; Rizky Priambodo; Abdul Hakim; Nur Wahyu Fathulhuda; Winda Nurul Fajriah; Muthiah Rahmah Ilahi; Nurul Assyifa Wardana
Bioma Vol. 19 No. 2 (2023): Bioma
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/Bioma19(2).6

Abstract

In addition to urban forest area at the University of Indonesia, Depok Campus, West Java, there are lakes that functions as water reservoir area. University of Indonesia is eager to create green and beautiful campus environment with one of its efforts is to care for the lake ecosystem in the campus. This study was conducted to analyze the diversity of phytoplankton in the lake. Sampling was carried out by determining 3 location points with 3 times repetitions conducted on different days. The water samples taken were then identified at the Biology Laboratory FMIPA UNJ. The mean values of water quality parameters obtained were pH 10, TDS 90 ppm, temperature 30°C, and water clarity 46 cm. The results showed that 14 genera and 20 species have been found, they are Chlorophyta, Chroococcus, Coelosphaerium, Crucigeniella, Euglena, Gloeocapsa, Merismopedia, Pediastrum (3 species), Peridinium, Scenedesmus (4 species), Tablelaria, Tetrastrum, Volvox, and Westella (2 species). The Diversity Index Shannon-Wiener during the observation was 2.9, which means that the condition of water at the University of Indonesia Lake was very good and not polluted. The availability of phytoplankton in the area was generally sufficient which can be utilized by other organisms as food source.
Akumulasi Biomassa Tumbuhan Poaceae di Bawah Cekaman Karbon Monoksida (CO) Puspitasari, Laksmi; Wahyuni, Resti; Pasaribu, Pinta Omas; Saputri, Rinny
Journal of Natural Sciences Vol 6, No 1 (2025): Journal of Natural Sciences Maret
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v6i1.813

Abstract

Air pollution caused by motor vehicle emissions is a significant environmental issue in Indonesia. One of the main pollutants from these emissions is carbon monoxide (CO), which can harm the environment and inhibit plant growth. High carbon monoxide exposure can cause plants to experience stress. This study aims to analyze the biomass accumulation of several plant species from the Poaceae family (Setaria plicata, Rottboellia cochinchinensis, Eleusine indica, and Paspalum conjugatum) under carbon monoxide exposure. The research method used was an experimental study with a Two-Factor Completely Randomized Design (CRD). The factors tested included plant species (four types) and the frequency of carbon monoxide exposure (three levels), with each treatment repeated three times. The results showed that the shoot dry weight was influenced by the plant species and the frequency of carbon monoxide exposure separately, with no interaction between the two factors. Rottboellia cochinchinensis had the highest shoot and root dry weight accumulation compared to the other species, while Paspalum conjugatum had the lowest biomass accumulation. The frequency of carbon monoxide exposure twice a week for two consecutive weeks resulted in the lowest shoot dry weight among the Poaceae plants.
Isolation and Characterization of Pathogenic Microbes Origin in Strawberry (Fragaria sp.) Based on Koch's Postulates Asharo, Rizal Koen; Indrayanti, Reni; Damayanti, Aldira Putri; Putri, Hilda Arsyah Eka; Nabilah, Saskia; Pasaribu, Pinta Omas
Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) Vol. 9 No. 2 (2022)
Publisher : Department of Biology Faculty of Mathematics and Natural Sciences Universitas Lampung in collaboration with The Indonesian Association of Biology (PBI) Lampung Branch.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jbekh.v9i2.269

Abstract

Strawberry (Fragaria sp.) is a horticultural plant originating from the Americas. Strawberries have a distinctive sweet and refreshing taste, and contain lots of vitamins and antioxidants that are useful for body health. But strawberries are also easily damaged. This damage can be caused by spoilage microorganisms such as bacteria and fungi that can grow if conditions permit such as the presence of appropriate temperature and humidity conditions. In this experiment, aims to isolate pathogenic microorganisms that cause disease in symptomatic strawberries and prove that these pathogens actually cause disease using Koch's Postulates method and then descriptive analysis is carried out. From the experimental results, it was found that soft rot disease in strawberries was characterized by rotten fruit parts that looked wet, slightly brownish in color, slimy, there were fine white threads and emitted a foul odor with a percentage of IP (disease occurrence) of 100% and KP (disease severity) of 92.66% where based on the score the damage was the highest.
Diversity and Community Structure of Butterly in Teijsmann and Soedjana Kassan Park, Bogor Botanical Garden Rizkawati, Vina; Asmara, Yustika Tri; Khairiyyah, Anisah; Perdani, Nindyra Karimah; Fitriasari, Sheryl; Savira, Ananda Nuri; Pasaribu, Pinta Omas; Asharo, Rizal Koen; Priambodo, Rizky
Jurnal Ilmiah Biologi Eksperimen dan Keanekaragaman Hayati (J-BEKH) Vol. 10 No. 1 (2023)
Publisher : Department of Biology Faculty of Mathematics and Natural Sciences Universitas Lampung in collaboration with The Indonesian Association of Biology (PBI) Lampung Branch.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jbekh.v10i1.270

Abstract

As a megadiversity country, Indonesia is home to a large number of flora and fauna, one of which is the butterfly. The Bogor Botanical Garden, situated at the center of Bogor City, not only serves as a green open space but also as a conservation area for plants and animals composed in it.  This study aimed to assess the diversity of butterfly species in Teijsmann Park and Soedjana Kassan Park, Bogor Botanical Garden through inventory and identification.  Sampling was carried out at spots that were 100 meters apart from each other on a walked-line transect defined at the two parks. The diversity parameters assessed and analyzed are relative abundance, relative frequency, Shannon-Wiener (H’) diversity index, Evenness index (E), and dominance.  In a total of 202 sample individuals, there were identified 38 species of butterflies belonging to 5 families namely Papilionidae, Pieridae, Nymphalidae, Lycaenidae, and Hesperiidae. The highest abundance found in Teijsmann Park is Ypthima philomela from the Nymphalidae family and Zizina otis from the Lycaenidae family. Species with the highest frequency are Junonia hedonia and Ypthima philomela from the Nymphalidae family. On the other hand, the highest frequency and abundance found in Soedjana Kassan Park was Leptosia nina from the Pieridae family. Teijsmann Park showed a slightly higher value of diversity and evenness indexes (H'=2.62, E=0.84) when compared to Soedjana Kassan Park (H'=2.50, E=0.76).  
Pemberdayaan Masyarakat melalui Budidaya dan Pengolahan Sayuran Microgreen di Desa Cisaat, Kecamatan Ciater, Kabupaten Subang Pasaribu, Pinta Omas; Indrayanti, Reni; Adisyahputra, Adisyahputra; Asharo, Rizal Koen; Rizkawati, Vina; Achmad, Farhana Faridah; Febrian, Reyno Ahmad; Utari, Raysita
Jurnal SOLMA Vol. 14 No. 2 (2025)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v14i2.17210

Abstract

Background: Cisaat Village, located in Ciater District, Subang Regency, has significant agricultural potential. Most of its residents rely on agriculture as their primary source of livelihood. However, efforts to diversify agriculture and optimize land use in Cisaat Village have not been fully maximized. Most farmers still depend on conventional farming systems, which face challenges such as seasonal dependency, high production costs, and limited access to more efficient agricultural innovations. The purpose of comminity is introduce the public to the cultivation and processing of microgreens as a food source to boost the household economics in Cisaat Village, Ciater District, Subang Regency. Methods: The community service activity was carried out through socialization in the form of lectures, discussions, and demonstrations or hands-on practice on microgreen cultivation techniques and benefits. The evaluation was conducted using a pre-test before the activity and a post-test afterward to measure participants' improvement in understanding. The pre-test and post-test data were statistically analyzed using the Dependent T-test to determine the significance of differences before and after the activity. Results: Participants demonstrated high enthusiasm and were actively engaged throughout the activity. The T-test results showed a significant improvement in understanding, with the average pre-test score of 46.44 increasing sharply to 86.04 in the post-test (p < 0.05). This indicates that the applied method has proven to be effective. Conclusions: This socialization, combined with live demonstrations, proved helpful in introducing participants and boosting their interest in growing microgreens, both to meet household vegetable needs and as an additional income opportunity.
Effectiveness of Gibberellin Concentration (GA3) for The Growth and Propagation of Plant Cuttings Stevia Rebaudiana Pasaribu, Pinta Omas; Saputro, Sigit; Indrayanti, Reni; Adisayhputra, Adisayhputra
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7605

Abstract

Stevia (Stevia rebaudiana) is a perennial semi-herbaceous plant whose leaves can be used as a sweetener for food and beverages. Stevia sweetener has low calories so its use is not bad for health. Propagation of Stevia by stem cutting using the top is a simple, fast, and easy propagation technique. This study aimed to obtain the optimum concentration of GA3 and the correct propagation method for Stevia cuttings for lowland areas. The research was conducted at the Green House, Biology Study Program FMIPA UNJ. The method used was an experimental method with a completely randomized design, consisting of 3 experiments, namely the provision of GA3 with a dose of 10 ppm, 30 ppm, and 50 ppm. Qualitative data were processed descriptively, quantitative data were analyzed based on ANOVA. The results showed that the use of Gibberellins with a concentration of 10 ppm and the maintenance of Stevia cuttings in clear plastic containers were more effective in the development of an average stem length of 19.18 ± 2.40, a mean plant length of 23.62 ± 2.34 and an average number of roots 14, 33 ± 2.32.
Co-Authors Abdul Hakim Abdul Hakim Achmad, Farhana Faridah Ade La Yusup Adisayhputra, Adisayhputra Adisyahputra Adisyahputra Adisyahputra Adisyahputra, Adisyahputra Agung Mulya Darmawan Alika Reforina Anandhita Arnelya Apriliani, Puput Arief Prasetyo Arief Prasetyo Arman, Zico Asmara, Yustika Tri Atika Cahya Ningrum Aulya, Nailul Rahmi Azizah, Sri Devi Nur Azizatul Amala Cari, Rimbi Brahma Damayanti, Aldira Putri Eldrian Daffa Raihan Elsa Lisanti Fajriah, Winda Nurul Fajriana Nurul Subhi Farhana Faridah Achmad Fathulhuda, Nur Wahyu Febrian, Reyno Ahmad Fitriasari, Sheryl Hilda Arsyah Eka Putri Ilahi, Muthiah Rahmah Ivan Hafidhuddin Khairiyyah, Anisah Koen Asharo, Rizal Laksmi Puspitasari M Zaidun Sofyan Maharani Dewi Maharani, Dewi Mega Putri Muhammad Hafidh Rizky Muthiah Rahmah Ilahi Nabilah, Saskia Ningrum, Atika Cahya Novia Lis Cahyati NOVITASARI, Ayu Nur Wahyu Fathulhuda Nursahara Pasaribu Nurul Assyifa Wardana Nurul Assyifa Wardana Nurul Assyifa Wardana Perdani, Nindyra Karimah Putri, Hilda Arsyah Eka Raymond Rayhand Tampanguma Reforina, Alika Reni Indrayanti Resti Wahyuni Rimbi Brahma Cari Rizal Koen Asharo Rizal Koen Asharo Rizal Koen Asharo Rizkawati, Vina Rizky Priambodo Rizky, Muhammad Hafidh Saputri, Rinny Saputro, Sigit Saraswati, Rahadian Ajeng Savira, Ananda Nuri Setyaningsih, Fani Subhi, Fajriana Nurul Usman Usman Utari, Raysita Vina Rizkawati Wardana, Nurul Assyifa Winda Nurul Fajriah YULIA IRNIDAYANTI Zico Arman