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All Journal Jurnal Ilmu Pertanian Indonesia SAINSMAT bionature Indonesian Journal of Educational Studies Microbiology Indonesia Jurnal Pendidikan Biologi Jurnal Penelitian Pendidikan IPA (JPPIPA) UNM Journal of Biological Education Biology Teaching and Learning Jurnal Agrotek Tropika Journal of Tropical Crop Science Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Biogenerasi Jurnal Abdi Insani BINOMIAL : Jurnal Pendidikan Biologi MALLOMO: Journal of Community Service EDUCATOR : Jurnal Inovasi Tenaga Pendidik dan Kependidikan Seminar Nasional Pengabdian Kepada Masyarakat Jurnal Pembelajaran, Bimbingan, dan Pengelolaan Pendidikan Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya Indonesian Journal of Fundamental Sciences Ininnawa: Jurnal Pengabdian Masyarakat Paramacitra : Jurnal Pengabdian Masyarakat Jurnal Hasil-Hasil Pengabdian dan Pemberdayaan Masyarakat Jurnal Abdi Negeriku JKM: Jurnal Kemitraan Masyarakat Bionature Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam
Oslan Jumadi
Department Of Biology, Faculty Of Mathematics And Natural Science, Universitas Negeri Makassar , Jalan Daeng Tata Raya, Parangtambung, Makassar , South Sulawesi 90224, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary Other

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Komposisi Kimia Pupuk Kompos dari Limbah Padat Rumah Potong Hewan Tamangapa Kota Makassar Hartono; Surahman Nur; Oslan Jumadi
Bionature Vol. 23 No. 1 (2022): April 2022
Publisher : Jurusan Biologi FMIPA Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rumah Potong Hewan (RPH) menghasilkan limbah padat dengan jumlah yang besar setiap hari dan belum dimanfaatkan secara maksimal. Limbah padat RPH memiliki potensi yang besar untuk dimanfaatkan sebagai pupuk tanaman melalui proses pengomposan. Pengomposan diharapkan bisa mengubah komposisi bahan organik limbah padat RPH menjadi lebih ideal untuk mendukung pertumbuhan tanaman. Penelitian ini bertujuan untuk mengetahui komposisi kimia pupuk kompos yang dibuat dari limbah pada RPH Tamangapa Kota Makassar baik sebelum dan setelah proses pengomposan. Pembuatan kompos dari limbah padat RPH Tamangapa kota Makassar dilakukan dengan menggunakan bahan utama isi rumen (perlakuan I) dan isi rumen yang dicampur dengan kotoran ternak dengan perbandingan 1:1 (Perlakuan II). Proses pengomposan dilakukan didalam kotak kompos dengan ukuran 40x40x60 cm dengan sistem aerasi passif selama 4 minggu dengan tiga kali ulangan. Data kuantitatif yang diuji pada penelitian ini meliputi kandungan N-total (%), C-Organik (%), P-total (%), K-total (%), rasio C/N, bahan organik (%), kadar air (%) dan reduksi kompos (%). Hasil penelitian menunjukkan bahwa Kandungan unsur C, N, P, K, rasio C/N, bahan organik, dan kadar air sebelum pengomposan baik pada perlakuan I dan perlakuan II secara umum masih rendah dan hampir sama dengan bahan bakunya. Setelah proses pengomposan berlangsung kandungan unsur C, P, K, rasio C/N, bahan organik, secara umum menunjukkan adanya peningkatan, sedangkan kandungan unsur N relatif tetap. Hasil analisis statistik menunjukkan tidak ada perbedaan yang signifikan antara komposisi kimia kompos pada perlakuan I dan perlakuan II baik sebelum dan setelah proses pengomposan
ABILITY OF NITROGEN-FIXING BACTERIA TO EXCRETE AMMONIUM ISOLATED FROM MAIZE RHIZOSPHERE Nur Anny Suryaningsih Taufieq; Oslan Jumadi; Rajidah Arsita; Fadjry Djufry; Yasser Abd. Djawad
Jurnal Agrotek Tropika Vol. 14 No. 1 (2026): JURNAL AGROTEK TROPIKA VOL 14, FEBRUARI 2026
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v14i1.10571

Abstract

Nitrogen-fixing bacteria are bacteria that have an important role in the process of nitrogen assimilation in the soil. Nitrogen-fixing bacteria consist of symbiotic and non-symbiotic nitrogen-fixing bacteria found abundantly in the rhizosphere. This research seeks to isolate, characterize, and evaluate the ability of rhizosphere bacteria in maize on tropical marginal soils to excrete ammonium. Isolate nitrogen-fixing bacteria using nitrogen-free bromothymol blue (NFB) medium. Soil samples were inoculated on solid NFB medium using the spread method and then incubated at 30˚C  for 6-7 days to observe nitrogen-fixing bacterial growth and were then characterized. The physiological characteristics of nitrogen-fixing bacterial isolates from the maize rhizosphere that were observed include temperature, pH, and salinity. A temperature resistance test was conducted to determine the resistance of nitrogen-fixing bacterial isolates to temperature. Ammonium excretion test using the spectrophotometric method. Six nitrogen-fixing bacteria isolates had been identified molecularly were Rhizobium pusense (LC585441.1), Beijerinckia fluminensis (MG547695.1), Microbacterium neimengense (LC430078.1), Microbacterium binotii (MN428150), Rhizobium pusense (MK542929.1) and Rhizobium sp. strain FNF3 (MH910714.1). The results of the ammonium excretion test showed that the highest concentration was produced by Microbacterium binotii at 42.0 μM, Microbacterium neimengense at 41.0 μM while for Beijerinckia fluminensis species, Rhizobium sp strain FNF3, and 2 Rhizobium pusense isolates respectively 38.8 μM, 38.6 μM, 38.0 μM, and 36.2 μM.
Comparison of the Learning Cycle 7E and Problem Based Learning Models on Students' Scientific Literacy, Learning Agility, and Biology Learning Outcomes Kartini Ahmad; Oslan Jumadi; Asham Bin Jamaluddin; Firdaus Daud; Yusminah Hala
Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya Vol. 6 No. 3 (2026): Lambda
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/lambda.v6i3.4462

Abstract

This study aimed to describe and compare the effects of the Learning Cycle 7E and Problem Based Learning (PBL) models on scientific literacy, learning agility, and biology learning outcomes among tenth-grade students. This was a quantitative study using a quasi-experimental approach with a pretest-posttest nonequivalent control group design. The population comprised all tenth-grade students of SMA Negeri 1 Tinambung in the 2025/2026 academic year (356 students across 10 classes). Samples were selected through random sampling of intact classes taught by the same teacher, yielding Class X Merdeka 1 (32 students) as the PBL group and Class X Merdeka 2 (36 students) as the Learning Cycle 7E group. Data were collected using a scientific literacy questionnaire, a learning agility questionnaire, and a cognitive learning outcome test, then analyzed using descriptive statistics and inferential statistics (independent samples t-test and Analysis of Covariance/ANCOVA) at a significance level of ? = 0.05. The results showed significance values of 0.003 for scientific literacy, 0.030 for learning agility, and 0.027 for learning outcomes (all p < 0.05), indicating that the Learning Cycle 7E and Problem Based Learning models had a significant effect on all three variables. The Learning Cycle 7E model produced higher scientific literacy scores, whereas PBL produced higher learning agility and learning outcome scores, suggesting that the two models complement rather than substitute for one another
Co-Authors A. Husnawati Taufiq A. Irma Suryani Abd Muis Abdul Muis Ainun Chamila Alfiqi Dwiva Annisi Alimuddin Ali Alimuddin Ali Almi Abdila Andi Asmawati Azis Andi Asmawati Azis Andi Asmawati Aziz Andi Hasnah Andi Mu'nisa Andi Mu’nisa Andi Rahmat Saleh Andi Rosman N Arifah Novia Arifin, Arifah Novia Arlinda Puspita Sari Arsad Bahri Asham Bin Jamaluddin Asia Arifin Aulya Novira Azwar Azwar Azwar B Nurhayati Christie Novri Yanti Diana Eka Pratiwi Dirgadwijuarti Azis Dirgadwijuarti Azis Dirgadwijuarti Azis Fadjry Djufry Faisal Faisal Faisal Faisal Faisal Faisal Fajar Harianto Fenny Hasanuddin Firdaus Daud Fitratul Insaniah Rusli Hafifah Maharani Irsyam Harianto, Fajar Hartati Hartati Hartati Hartati, Hartati Hartono Hartono Hartono Hartono Hartono Hartono Herpina Herpina Hilda Karim Husnul Inayah Saleh I Ketut Suada Idris, Irma Suryani Imamul Hak Imamul Hak Inayah Saleh Husnul Inayah Saleh Husnul, Inayah Saleh Indra Indra Irma Suryani Idris Langi&#039; Juanda, Juanda Kartini Ahmad KAZUYUKI INUBUSHI Kusdianawati Liawati ., Liawati Lodang, Hamka Lukman Amir Lukman Amir Masyitha Wahid Muh. Kahfi Muhammad Habil Ahmad Muhammad Junda Muhammad Wiharto Muhammad Wiharto Muhammad Wiharto Muharram Muharram Muhiddin Palennari Muliyati M Mushawwir Taiyeb Mushawwir Taiyeb Musniati Azis Nabila Aqmarina Nani Kurnia Nani Kurnia Nani Kurnia, Nani Norna Norna Novira, Aulya Nur Agustin Nur Aina Nur Anny Suryaningsih Taufieq Nur Azizah Amaliah Nur Indah Sari Nur Izzah Nur Rahmah Wahyuddin Nur Rezki Octavia Nur Rezki Octavia Nurhayati B Nurhayati Nurhayati Nurjannah Japarang Nurlia Nurlia Nurlia Nurlia Nurmuliayanti Muis Nurul Amaliah Nurul Anisa NURUL HIDAYAH Nurul Magfirah Rahman Oriny Tri Ananda Oslan Jumadi Pagarra, Halifah Patongai, Dian Dwi Putri Ulan Sari Pince Salempa Putri Athirah Azis Rachmawaty Muchtar, Rachmawaty Rachmawaty Rachmawaty Rachmawaty Rachmawaty, Rachmawaty Rachmawaty, Rachmawaty Rajidah Arsita Rezki Amalia Sahribulan Sahribulan Sahribulan Sahribulan, Sahribulan Sainal Sainal Saparuddin Siti Maulyda Ayu MZ St. Fatmah Hiola St. Rahma Stepi Apriyana Sumartan Sumartan Surahman Nur Suryaningsih, Nur Anny Syamsiah, Syamsiah Syamsidah Syamsidah, Syamsidah Taufieq, Nur Anny S. Taufiq Taufiq Taufiq, Nur Anny Suryaningsih Warida Hafni Yanti, Christie Novri Yasser Abd Djawad Yasser Abd Djawad Yasser Abd. Djawad Yasser Abd. Djawad Yasser Abd. Jawad Yusminah Hala Yusminah Hala Yusnaeni Yusnaeni Yusnaeni Yusuf