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Test of the Ability of Fluorescent Pseudomonas to Dissolve Phosphate Norman, Mayanda; Advinda, Linda; Chatri, Moralita; Handayani, Dezi
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): Special Issue
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.v25i4b.11143

Abstract

Phosphate is a vital nutrient required for plants, yet its presence in the soil is frequently limited due to being held by specific ions. Microorganisms that solubilize phosphate, particularly fluorescent Pseudomonas, are considered among the most efficient agents for phosphate solubilization. This research intends to assess the capacity of six fluorescent Pseudomonas isolates derived from the rhizosphere of different plants to solubilize phosphate, and to analyze their IKF values. The research was carried out descriptively from June to August 2025 at the Plant Physiology Laboratory, Faculty of Mathematics and Natural Sciences, Padang State University. Observations were conducted by noticing the development of clear zones and determining the IKF values. The findings indicated that every isolate, specifically PfPj1, PfS36, PfLAHP2, PfCas, PfS31, and PfKd7, was capable of solubilizing phosphate. The highest IKF value was found in isolate PfKd7 (4.91), whereas the lowest was recorded for PfS36 (4.08). Variations in IKF values indicate differences in the capacity of each isolate to release organic acids, which are involved in the phosphate solubilization process. This discovery reinforces the capability of fluorescent Pseudomonas as an eco-friendly biological agent to enhance phosphorus availability.
UJI EFEKTIVITAS FUNGISIDA KIMIA TERHADAP JAMUR PATOGEN Fusarium sp. SECARA IN VITRO Insyira, Cleoraissa; Alhusaeri Siregar, Bayo; Chatri, Moralita
Jurnal Biogenerasi Vol. 11 No. 1 (2026): Volume 11, no 1, 2026, (Januari - Maret 2026)
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/biogenerasi.v11i1.8001

Abstract

Fusarium sp. is a pathogenic fungus causing wilt disease in Acacia crassicarpa nurseries and reducing seedling quality in industrial forest plantations. The control of this disease is generally done with chemical (synthetic) fungicides, but the most effective one is not yet known. This study aimed to evaluate the effectiveness of several chemical fungicides against Fusarium sp. growth in vitro. The study was conducted from February to June 2025 at the Plant Protection Department (PPD) Laboratory, R&D Division of PT. Arara Abadi using a Completely Randomized Design with four treatments: control, Octave (prochloraz–manganese chloride complex), Besromil (metalaxyl), and Odeon (chlorothalonil), with three replications. The observed parameter was the percentage of fungal growth inhibition. Data were analyzed using ANOVA followed by Duncan’s test at a 5% significance level. The results showed that Octave exhibited the highest inhibitory effect with 100% inhibition and was significantly different from other treatments. Besromil and Odeon showed low inhibition and were not significantly different from the control. Therefore, prochloraz–manganese chloride complex was the most effective fungicide in inhibiting Fusarium sp. growth in vitro.
Co-Authors . Mansyurdin Abdul Razak Abdul Razak Achyar, Afifatul Afdarina, Oksa Afifa Akhyar Ahmad Subari Alhusaeri Siregar, Bayo Amalia, Irna Amri Bakhtiar Annisa Tulhasanah Arlina, Sistika Atifah, Yusni Auliani Arafah Ayunda Intan Kartika Az – Zahra Nabillah Azizah, Salum Azwir Anhar Azzahra, Zakila Beni Gusnadi Billa Firdaus Tanjung, Shalsa cynthia perdana putri Des M Des M Des M Des Des M. Des M. M. Dezi Handayani Dian Intan Rahmadhni Dilla, Aprina Dina Sukma Dinda Alde Rahmadhani Rahmadhani Dr. Des M.S Dr. Irdawati M. Si Dwi Hilda Putri Edwin Edwin Eldyana Rahayu Putri Elsa Yuniarti Eria Marina Sepriyani Erwina Simanullang fadia salsabil arsy FAJRINA, SUCI Febriani Dika Suryendra Fevria, Resti Ficil Mikaf Filza Yulina Ade Fransisco, Sandi Fronica, Imelda Ghiffari, Muhammad Hani Fitriani Heffi Alberida Helendra Helsa Rahmatika Herina, Nandia Idos Susila Ningsih Ilfia Islamiati Putri Imelda Nasrul, Putri Insyira, Cleoraissa IRDAWATI Irdawati Irdawati Irdawati Irdawati Irdawati M.Si Irdawati Zalni Irma Leilani Eka Putri Jumjunidang Jumjunidang Kardiman, Reki Kartika Sari Khotimah, Anggun Khumaira, Kayla Anaya Kurnia Illahi, Rani Kurnia Wulansari Larashinda, Mentari Latif, Zalik Muhammad Linda Advinda Linda Advinda Lufri Lufri Mades Fifendy Mantoviana, Tiffany Mardiana Ikhwan Marisa Marisa Marsha Utami Mayarlis Mei Niarti Meriza Fatma Mesy Maisarah Miftahul Jannah Milka Saputri Monica , Indiastri P Muhardini, Mike Muhyiatul Fadilah Mukhlis Mukhlis N.Sri Hartati Nabilah, Rezi Nadia Naldi, Henra Nanang Taryana Natasya Hersila Nazhifah, Naura Niken Maharani Putri Norman, Mayanda Nurlita, Dwi Olan Tri Sinaga Perri Adnadi Pratama, Sandi Fransisco Puspa Anggraeni Putri Putri Widianti Putri, Amaliani Putri, Aulia Devani Putri, Irma Leilani Putri, Irma Leilani Eka Putri, Ulfa Dwi Rahmawati Darussyamsu Rahmi Holinesti Rahmi, Elva Relsas Yogica, Relsas Resti Yulia Riana Aftafia Rizka Putri Alti Roza, Sri Yenica Rusendra, Nabilla Makra Sabrina Mandai, Della Saputra, M. Rizki Sari Yulianti Selaras, Ganda Hijrah Sholichin, Muhamad Silvi Lathifah SRI RAHAYU Sri Widyaningsih Suci Fajrina Suci Fajrina Syahrastani, Syahrastani Syamsurizal Syamsurizal - - Syamsurizal Syamsurizal Syamsurizal Syamsurizal Tita Yunia Zalni Tomi Apra Santosa Santosa Vauzia Vauzia M.Si Vauzia Vauzia Vauzia, Vauzia Vauzia, Vauzia Via Susana Gusni Violita Violita Violita Violita Violita Violita Violita Viona, Alda Wawan Sujarwo Wulansari, Kurnia Yanti Srinita Utami Yesti Yesti Yosi Safritry Yulanda Saputri Zahratul Aini