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All Journal Jurnal Riset Rumpun Ilmu Teknik (JURRITEK)
M. Akbari Danasla
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Civil Engineering, Building, Construction & Architecture Computer Science & IT

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Analisis Pengaruh Bakteri Rhizobium SP terhadap Petumbuhan Sengon di Lahan Bekas Tambang Kapur Ratu Salma Aqilla; M. Akbari Danasla
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 3 (2025): Desember : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i3.6684

Abstract

The land of the former Pit B limestone mine of PT Semen Baturaja has failed to plant and grow dwarf plants at several locations due to low nutrient content, such as Nitrogen, Phosphorus, Potassium, Soil PH, C-Organic, and cation exchange capacity (KTK). This condition causes the plant not to grow optimally. This study aims to determine the effect of the application of Rhizobium sp bacteria on the growth of Sengon plants (Falcataria moluccana) using polybag media on the land. The method used was an experiment with the treatment of giving Rhizobium sp in various doses. The results of the study showed that the administration of Rhizobium sp had a real effect on increasing the growth of sengon plants. Based on laboratory observations and analysis, there is a change in soil pH from slightly alkaline to neutral after treatment. The C-Organic content increased from medium to very high, while the Nitrogen content rose from medium to high. The elements of Phosphorus, Potassium, and KTK have also increased significantly and are classified as very high. The best treatment is obtained at a dose of 30 grams of Rhizobium sp, which gives optimal results on an increase in plant height and root length. These findings suggest that the application of Rhizobium sp can be an effective biotechnology alternative in post-mining land rehabilitation, particularly in improving soil fertility and forestry crop productivity. This research contributes to environmental management and the use of microorganisms in the restoration of degraded ecosystems.
Pemanfaatan Pseudomonas Fluorescens untuk Pertumbuhan Sengon di Lahan Bekas Tambang Kapur Eugenia Marcella Hotmauli Manik; M. Akbari Danasla
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 3 (2025): Desember : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i3.6724

Abstract

Abandoned mining sites often experience a decline in soil fertility, which impacts soil quality and agricultural sustainability. This study aims to explore the potential of Pseudomonas fluorescens in rehabilitating limestone mining lands and enhancing the growth of Sengon (Falcataria moluccana) trees grown in polybag media. Sengon was selected as a pioneer species due to its resilience in degraded soils and its ability to improve soil structure. This study used an experimental design involving eight different treatments, which included the application of manure and varying concentrations of Pseudomonas fluorescens. Evaluations were conducted on the 25th and 50th days by measuring plant growth parameters such as plant height, root length, and key soil chemical properties, including pH, organic carbon, total nitrogen, total phosphorus, total potassium, and cation exchange capacity (CEC). The results showed that the application of 15 mL of Pseudomonas fluorescens on day 50 resulted in optimal plant growth, as indicated by an increase in plant height, root length, and soil quality improvement. The application of Pseudomonas fluorescens also enhanced soil pH, organic carbon, total nitrogen, and cation exchange capacity, all of which contributed to the improvement of soil fertility in the limestone mining land. This study provides evidence that Pseudomonas fluorescens can play a role in the rehabilitation of abandoned mining lands and improve the growth of Sengon trees, contributing to the recovery of degraded ecosystems.
Analisis Pengaruh Paenibacillus Polymyxa Terhadap Pertumbuhan Tanaman dan Unsur Hara Tanah Lahan Pascatambang Kapur Larasati Kania Pramesti; M. Akbari Danasla
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 3 (2025): Desember : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i3.6725

Abstract

Mining, especially open-pit mining, can have an impact on the environment and biodiversity. PT Semen Baturaja's limestone mining has an impact on the environment. Therefore, reclamation is necessary to restore the disturbed environmental conditions. The objective of this study is to analyze the effect of Paenibacillus polymyxa bacteria on post-limestone mining soil content and sengon plant growth in polybag media. This study uses an experimental method to observe the effect of treatment application. The treatments applied consist of three bacterial doses: 15 mL, 30 mL, and 45 mL. This study will observe sengon growth with the assistance of bacteria and manure fertilizer using polybag media. The parameters observed include soil pH, plant height, root length, as well as organic carbon (C-Organik), total nitrogen (N-Total), potential phosphorus (P Potensial), potential potassium (K Potensial), and Cation Exchange Capacity (CEC). The results of the study indicate that the application of Paenibacillus polymyxa bacteria can enhance soil nutrient content and support sengon plant growth. Soil nutrient content results show significant improvements in nutrient levels in former limestone mine soil. The best treatment was demonstrated by the 45 mL dose, which exhibited the highest increase in nutrient content.
Co-Authors Eugenia Marcella Hotmauli Manik Larasati Kania Pramesti Ratu Salma Aqilla