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All Journal Vegetalika Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Agrotrop : Journal on Agriculture Science Jurnal Pengendalian Hayati BIOTROPIA - The Southeast Asian Journal of Tropical Biology AGRIKA Cropsaver : Journal of Plant Protection Plumula : Berkala Ilmiah Agroteknologi Proceeding International Conference on Global Resource Conservation Jurnal Agroekoteknologi BIOEDUSCIENCE Jurnal SOLMA Jurnal Pertanian Agros Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agrotek Tropika Agritrop : Jurnal Ilmu-Ilmu Pertanian (Journal of Agricultural Science) JURNAL AGROHITA Jurnal Ilmiah RESPATI Jurnal Pembelajaran dan Biologi Nukleus Agrienvi : Jurnal Ilmu Pertanian Nusantara Science and Technology Proceedings Berkala Penelitian Hayati AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Eduvest - Journal of Universal Studies Journal of Applied Plant Technology Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia
Arika Purnawati
Agrotechnology, Faculty Of Agriculture, Universitas Pembangunan Nasional “Veteran” East Java, Surabaya 60294, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Social Sciences Veterinary Other

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Bioencapsulation of Streptomyces sp. with Sodium Alginate for Control Fusarium sp. in Shallot Plants Widyananda, Kanaya Syafina; Purnawati, Arika; Wiyatiningsih, Sri
CROPSAVER - Journal of Plant Protection Vol 8, No 2 (2025)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v8i2.67882

Abstract

This study investigated the effects of Streptomyces sp. encapsulated in sodium alginate beads on the growth and health of shallot (Allium cepa L.) plants. Different sodium alginate concentrations (2%, 2.5%, and 3%) and application timings (7 days before transplanting and at transplanting) were tested. The mass and diameter of the beads showed slight decreases over storage time, indicating some shrinkage but maintaining structural integrity to protect the bacteria. Encapsulation efficiency was highest at 3% sodium alginate, which also correlated    with    increased    bead     stability.     Viability     tests     revealed that Streptomyces maintained high colony-forming units (CFU) across the treatments, confirming the protective effect of the encapsulation. Application of beads significantly reduced Fusarium wilt disease intensity and improved bulb weight. Treatments with higher sodium alginate concentrations and earlier application times showed the most pronounced benefits. These findings demonstrate that beads using optimal sodium alginate concentration and timing enhance microbial viability and biological control efficacy, contributing to healthier and more productive shallot cultivation.
Isolation and Identification of Indigenous Bacteria Potential to Degradate Mancozeb from Shallots (Allium cepa L.) Cultivation Land in Nganjuk District Khairunnisa, Nabila Zahra; Prasetyawati, Endang Triwahyu; Purnawati, Arika
CROPSAVER - Journal of Plant Protection Vol 8, No 2 (2025)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v8i2.67683

Abstract

The use of a fungicide containing the active ingredient mancozeb in shallot fields to control moler disease, if not managed in terms of dose and frequency, it has the potential to harm soil in physical, chemical and biological ways. One method for repairing this damage is too use local microbes. This research attempts to determine the types of bacteria in soil treated to mancozeb fungicide through a morphological and physiological characterization process. Soil samples were collected from the shallot producing region of Balongrejo District, Nganjuk Regency. The method in this research is to isolate soil samples at a depth of 0-20 cm. Bacteria were isolated and multiplied using the streak plate technique on nutrient agar medium. Identification was performed on macroscopic and microscopic morphological features well as physiological characters based on the method of Schaad et al. (2001). Bergey's Manual of Determinative Bacteriology Ninth Edition was then used to identify the isolated bacteria. The research results showed that 14 bacterial isolates were isolated, 5 isolates suspected to be the genus Bacillus, 7 isolates suspected to be the genus Corynebacterium, 1 isolate suspected to be Lactobacillus, and 1 isolate unidentified. All indigenous bacterial isolates were able to reduce the concentration of mancozeb fungicide through measurements using a UV-Vis spechtrophotometer with a wavelength of 268 nm. The highest degradation percentage was bacterial isolate I8 (75%) and the lowest was bacterial isolate I7 (19%).
ALGINATE-SEED ENCAPSULATION CONTAINING ENDOPHYTIC Bacillus cereus BTH21 FOR BIOCONTROLLING WILT DISEASE IN EGGPLANT Purnawati, Arika; Prasetyawati, Endang Triwahyu; Aditya, Haidar Fari; Saefur Rohman
BIOTROPIA Vol. 32 No. 3 (2025): BIOTROPIA Vol. 32 No. 3 December 2025
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2025.32.3.2410

Abstract

HIGHLIGHTSSeed encapsulation using alginate and B. cereus BTH21 for biocontrol of wilt disease in eggplant.ABSTRACTBacterial wilt is a major plant disease caused by Ralstonia solanacearum that infects important crops, such as eggplant, causing wilt, stunted growth, and reduced yield. The biocontrol of the pathogen can be done by employing antagonistic bacteria, yet direct inoculation into the soils are often ineffective due to low population of the pathogen in the soils, which also easily washed away by watering activity. Seed encapsulation technique, using alginate, zeolite and peat, containing antagonistic bacteria Bacillus cereus BTH21 to control R. solanacearum is the novelty proposed in this research. Hence, this research aimed to develop alginate seed-encapsulation technique containing Bacillus cells as a mean to biologically control R. solanacearum in eggplant. Endophytic Bacillus cereus BTH21 strains was isolated from healthy eggplant tissue obtained from Kediri, East Java Province, Indonesia. Subsequent isolation, purification and molecular identification confirmed the identity of the strain. Three seed-encapsulation formulations were made: a) control (no encapsulation); b) alginate + zeolite + Bacillus (Al+Z+B); and c) alginate + peat + Bacillus (Al+P+B). A field experiment was designed in a Completely Randomized Design (CRD) where the alginate-encapsulated eggplant seeds were sown along with deliberate R. solanacearum inoculation (107 cfu/mL) into the soils. Observations were carried out every 7 days from 0 – 49 days after sowing (DAS) on several parameters, i.e., incubation period, infection rate, germination percentage, plant height, and number of leaves. The data were analyzed by using analysis of variance (ANOVA) followed by Duncan’s multiple range test at a significance level of P < 0.05. The results showed that both seed encapsulation formulations prolonged incubation period (15 and 13 DAS) compared to the control (10 DAS), reduced infection rate, increased germination rate, as well as higher agronomic performances (plant height, number of leaves) compared to the control at 7 – 49 DAS. Overall, this results indicated the potential of alginate seed-encapsulation techniques containing biocontrol agents to control plant diseases.
POTENSI JAMUR ENDOFIT SEBAGAI AGENSIA HAYATI JAMUR Colletrothichum sp. PENYEBAB PENYAKIT ANTRAKNOSA PADA TANAMAN CABAI RAWIT Ika Noviyanti, Rizky; Purnawati, Arika; Suryaminarsih, Penta
Jurnal AGROHITA: Jurnal Agroteknologi Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan Vol 7, No 2 (2022): JURNAL AGROHITA
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jap.v7i2.6021

Abstract

Tanaman cabai rawit (Capsicum frutencens L) merupakan salah satu komoditas utama tanaman hortikultura yang dibudidayakan secara komersial di daerah tropis yang bernilai ekonomi tinggi di Indonesia. Satu diantara penyakit penting pada cabai rawit adalah penyakit antraknosa. Antraknosa merupakan penyakit utama tanaman cabai yang disebabkan oleh jamur Colletotrichum sp. Penggunaan pestisida sintetik yang kurang bijaksana ternyata banyak merugikan manusia dan agroekosistem. Oleh karena itu, perlu dilakukan upaya pengendalian penyakit yang ramah lingkungan dengan penggunaan agensia hayati. Beberapa penelitian menunjukkan jamur endofit dapat digunakan untuk meningkatkan ketahanan inang dari serangan patogen serta dapat memacu pertumbuhan tanaman dengan menghasilkan metabolit sekunder dan enzim tertentu. Penelitian ini dilaksanakan dari bulan April hingga Juni 2021. Tempat pelaksanaan penelitian di Laboratorium Kesehatan Tanaman Fakultas Pertanian Universitas Pembangunan Nasional “Veteran” Jawa Timur untuk In Vitro. Sedangkan, untuk In Vivo dilaksanakan di Screenhouse Kebun Bibit Wonorejo Surabaya. Penelitian ini bertujuan untuk mengetahui potensi jamur endofit dari tanaman cabai rawit sehat yang mampu menghambat pertumbuhan jamur Colletotrichum sp. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) non faktorial. Berdasarkan pengamatan, jamur endofit asal tanaman cabai rawit berpotensi menekan pertumbuhan jamur Colletotrichum sp. penyebab penyakit antraknosa.
Efficacy of Endophytic Bacteria as Entomopathogens against Spodoptera frugiperda (Lepidotera: Noctuidae) on Corn (Zea mays L.) Kurniawati Kurniawati; Arika Purnawati; Wiwin Windriyanti
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.1040-1050

Abstract

The fall armyworm (Spodoptera frugiperda) poses a problem for corn plants (Zea mays L.). The use of endophytic bacteria Bacillus sp. as an entomopathogen is expected to control the S. frugiperda pest. This study aims to determine the effective concentration of the bacteria and the active compounds produced by Bacillus sp. strain Bth 22 in controlling S. frugiperda. The research was conducted from August to October 2024 at the Plant Health Laboratory of the Faculty of Agriculture, UPN "Veteran" East Java, and the Airlangga Research Hub in Surabaya. The study was designed using a completely randomized design (CRD) with bacterial concentration treatments of 0% (control), 10%, 15%, 20%, 25%, 30%, and 35%, repeated five times. Observational parameters included mortality rate, number of pupae and imago formed, as well as the mechanisms and compounds produced by Bacillus bacteria based on HPLC and FT-IR tests. The application of Bacillus sp. Bth-22 affected the mortality parameters, the number of pupae formed, and the number of imago formed. The Bacillus sp. Bth-22 bacteria produced metabolites in the form of hydrocarbon derivatives and amide group compounds, disrupting metabolism and digestion, leading to the mortality of S. frugiperda. Keywords: Entomopathogen, Metabolite compounds, Spodoptera frugiperda, Zea mays 
Uji Konsentrasi Metabolit Sekunder Bakteri Bacillus sp. terhadap Jamur Colletotrichum sp. Pada Benih Cabai Rawit Metode Blotter Test Nurul Afida; Arika Purnawati; Tri Mujoko
Vegetalika Vol 14, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.108950

Abstract

Low-quality seeds can negatively affect the success of agricultural practices by reducing yield and increasing susceptibility to pathogen infection. Pathogens may infect seeds starting from the field, during transportation, and throughout storage. The utilization of Bacillus sp. as a biological control agent has been extensively studied due to its ability to produce secondary metabolites with antifungal properties. This study aimed to determine the effective concentration level of secondary metabolites of Bacillus sp. Bth-22 in suppressing Colletotrichum sp. infection on chili pepper (Capsicum frutescens L.) seeds using the blotter test method. The experiment was arranged in a completely randomized design (CRD) with a single factor consisting of concentration levels (10%, 15%, 20%, 25%, and 30%), sterile distilled water, and the chemical fungicide propineb as controls. The results showed that treatment with various concentrations of secondary metabolites of Bacillus sp. Bth-22 significantly affected the infection level, with concentrations of 30% (G) at 36%; 25% (F) and KP (B) at 38.6%; 20% (E) at 40%; 15% (D) at 42.6%; and 10% (C) at 44%, compared with the negative control. In addition, treatments also suppressed infection levels, with 30% (G) at 43.3%; 25% (F) and KP (B) at 39.3%; 20% (E) at 37%; 15% (D) at 33.6%; and 10% (C) at 31%. Furthermore, application of Bacillus sp. Bth-22 secondary metabolites induced abnormalities in fungal hyphae, such as curling, twisting, and bending, indicating antifungal activity of the bioactive compounds produced by Bacillus sp. Bth-22.
Co-Authors Aditya, Haidar Fari Ahmad Adibul Akrom Akrom, Ahmad Adibul Al Rahmad, Nirmala Putri Alfa, Maria Rodhya Althaf, Marcellino Alvia Cindy Apriliani Amalia, Anisa Rizki Aris Cahyono Bambang HADISUTRISNO Diasi, Ananta Rizki Didik Utomo Pribadi Dwirizki Permata, Aprilla Hendiana Elly Syafriani Endang Triwahyu Prasetyawati Fari A, Haidar Fatimah Nabila Zahra Firmansyah, Moch Ryan Hadi Suhardjono Hasni Wardahni Haykal, Arkan Heriyati, Sukma Herry Nirwanto Iis Purnamawati Ika Noviyanti, Rizky Indah Pemuda Indarwati Indarwati Irsyad Irsyad Ketut Srie Marhaeni Julyasih Khairunnisa, Nabila Zahra Kurniawati Kurniawati Laras Setyowati Laras Setyowati Lestari, Safira Rizka Maharani, Salsabilla Diva Mahfud, Nur Aini Marcellino Althaf Maria Rodhya Alfa Maulina Aizah, Shinta Mujoko , Tri Mukaromah, Fathul Nensi Agustina Nensi Agustina Nensi Agustina Nijma Nurfadila Noni Rahmadhini Nora Augustien Novi Nafisah Najmi Nur Aini Mahfud Nurul Afida Pawana Nur Indah Penta SURYAMINARSIH Prasetyawati, Endang Triwahyu Prasetyowati, Endang Triwahyu Presti Mardiyani Rizky Ika Noviyanti Saefur Rohman Safira Rizka Lestari Sayekti, Ninik Ari Setyowati, Laras Sri Wiyatiningsih Syamsul Arifin Tri Mudjoko Tri MUJOKO Triwahyu P, Endang Triwidodo ARWIYANTO Widayati, Wilujeng Widyananda, Kanaya Syafina Wilujeng Widayati Windriyanti, Wiwin Wiwik Harjani Yanti, Vika Yenny WURYANDARI Zakaria Wildan Fachrezzy Zakqy, Nauval