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All Journal JURNAL BIOLOGI INDONESIA Atom Indonesia
I. Sugoro
Center for Isotopes and Radiation Application, National Nuclear Energy Agency, Jl. Lebak Bulus Raya No.49, Jakarta 12070, Indonesia
Biochemistry, Genetics & Molecular Biology Energy Physics

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Efektivitas Asosiasi Inokulan Campuran Bakteri Rhizosfer dengan Tanaman Jagung Varietas Srikandi pads Tanah Latosol Lampung Gandanegara, S.; Sugoro, I.; Slamet, S.
JURNAL BIOLOGI INDONESIA Vol 3, No 4 (2002): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v3i4.3322

Abstract

ABSTRACTThe Effectiveness of Rhizospheric Bacteria Mix Inoculant Associated with Maizein Latosol Lampuog Soil. Two greenhouse experiments were carried out to evaluate theeffectiveness of Plant Growth Promoting Rhizobacteria (PGPR) ino-culants on plant growthof maize. In the first experiments, eleven single isolates were screened for associationeffectiveness with maize. Inoculation improved plant perfomance by increasing roots, shootsand total plant dry weight. Five isolates with the increase of plant dry weight ranging from 27-47% over control were then selected for mixed inoculants. In the second experiment, tenmixed inoculants consisted of 3 single isolates were evaluated on plant growth, N plant yield,and N derived from fertilizer and contribution from fixation. The later parameter was.determined by "N method. Three mixed inoculants namely M5, M8, and M9 showed highereffectiveness with the increase of plant weight 27-29% over control. Plant N yield of plantsinoculated with those mixed inoculants were 176-194 mg N/pot as compared to 144 mg Nlpotin control plants. Lower %eIx cess atom % in inoculated plants indicated some Ncontribution from fixation which ranged from 1 5 -2 1 %.Key words : mixed inoculants, % method, maize, latosol
EFEKTIVITAS ASOSIASI INOKULAN CAMPURAN BAKTERI RHIZOSFER DENGAN TANAMAN JAGUNG VARIETAS SRIKANDI PADS TANAH LATOSOL LAMPUNG Gandanegara, S.; Sugoro, I.; Slamet, S.
JURNAL BIOLOGI INDONESIA Vol 3, No 4 (2002): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v3i4.3322

Abstract

ABSTRACTThe Effectiveness of Rhizospheric Bacteria Mix Inoculant Associated with Maizein Latosol Lampuog Soil. Two greenhouse experiments were carried out to evaluate theeffectiveness of Plant Growth Promoting Rhizobacteria (PGPR) ino-culants on plant growthof maize. In the first experiments, eleven single isolates were screened for associationeffectiveness with maize. Inoculation improved plant perfomance by increasing roots, shootsand total plant dry weight. Five isolates with the increase of plant dry weight ranging from 27-47% over control were then selected for mixed inoculants. In the second experiment, tenmixed inoculants consisted of 3 single isolates were evaluated on plant growth, N plant yield,and N derived from fertilizer and contribution from fixation. The later parameter was.determined by "N method. Three mixed inoculants namely M5, M8, and M9 showed highereffectiveness with the increase of plant weight 27-29% over control. Plant N yield of plantsinoculated with those mixed inoculants were 176-194 mg N/pot as compared to 144 mg Nlpotin control plants. Lower '%eIx cess atom % in inoculated plants indicated some Ncontribution from fixation which ranged from 1 5 -2 1 %.Key words : mixed inoculants, '% method, maize, latosol
Selection of Bacteria from Mamuju’s NORM as Uranium and Thorium Bioleaching Agents Indryati, S.; Mujiyanto, A.; Widana, K. S.; Hidayat, A. E.; Rahma, F. J.; Shabirah, C. A.; Laksmana, R. I.; Pratama, A. A.; Trinopiawan, K.; Prassanti, R.; Purwanti, T.; Putra, A. W.; Sukadana, I G.; Sugoro, I.
Atom Indonesia Vol 51, No 1 (2025): APRIL 2025
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/aij.2025.1559

Abstract

Natural materials that can cause increased radiation exposure to the surrounding environment are called Naturally Occurring Radioactive Materials (NORM). NORM contains uranium and thorium, critical elements with strategic and economic value. Conventional separation methods include chemical leaching and partial precipitation with strong acids and bases. These methods require large costs and produce waste harmful to the environment. This study explores bioleaching as an efficient and eco-friendly alternative to address these limitations. The indigenous bacteria used in bioleaching were isolated directly from NORM in Mamuju. This study aims to isolate, select, and evaluate bacteria from NORM as potential bioleaching agents. The methodology of this study includes NORM characterization, bacterial isolation and selection, molecular identification, and resistance testing of selected bacteria. The study successfully isolated eight bacterial strains from NORM, among which isolate L0A demonstrated the highest bioleaching potential. After five days of incubation, L0A achieved uranium and thorium concentrations of 2.508 mg/L and 10.5946 mg/L, respectively. Molecular identification revealed that L0A belongs to Bacillus sp. These findings demonstrate the potential of Bacillus sp. L0A is a bioleaching agent, paving the way for developing efficient, sustainable, and environmentally friendly methods for extracting valuable radioactive elements from NORM.
Co-Authors Gandanegara, S. Gandanegara, S. Hidayat, A. E. Indryati, S. Laksmana, R. I. Mujiyanto, A. Prassanti, R. Pratama, A. A. Purwanti, T. Putra, A. W. Rahma, F. J. Shabirah, C. A. Slamet, S. Slamet, S. Sukadana, I G. Trinopiawan, K. Widana, K. S.