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All Journal Journal of Degraded and Mining Lands Management Acta Solum
Salsabila, Nadhira Ghea
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Microbial status of burned tropical peat soils: A case study of Perigi peat soil, Ogan Komering Ilir, South Sumatra, Indonesia Napoleon, Adipati; Salsabila, Nadhira Ghea; Imanudin, M.S.; Soleha, Soleha; Hermawan, Agus; Bakri, Bakri
Journal of Degraded and Mining Lands Management Vol. 12 No. 5 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.125.8969

Abstract

Post-fire tropical peatlands in Southeast Asia face severe ecological degradation, yet the biological dimension, particularly soil microbial abundance as an indicator of ecosystem health, remains understudied. This study aimed to quantify culturable bacterial and fungal populations across different peat layers in a fire-affected peatland in Perigi Village, South Sumatra, Indonesia. Soil samples were collected from two depths  (0-30 cm and 30-60 cm) using a stratified random sampling approach and analyzed with the Total Plate Count (TPC) method on nutrient agar and potato dextrose agar media. Results showed a clear vertical stratification, with microbial populations significantly higher in the surface layer (0-30 cm) than in the subsurface layer (30-60 cm), reaching maximum counts of 2.6×10? CFU g?¹ for bacteria and 8.8×10³ CFU g?¹ for fungi. Sapric peat consistently supported greater microbial abundance than hemic peat, likely due to higher nutrient availability and periodic inputs from recovering vegetation. Regression analysis confirmed a significant negative relationship between peat depth and microbial counts, whereas water table depth had no measurable effect, highlighting the stronger influence of decomposition stage and soil structure over short-term hydrological fluctuations. These findings emphasize the ecological importance of microbial communities in degraded tropical peatlands and suggest that microbial viability metrics offer a cost-effective, biologically relevant indicator for peatland health assessment. Integrating microbial parameters into restoration planning may enhance evidence-based strategies for managing post-fire tropical peat ecosystems.
Pupuk Organik Cair Berbasis Limbah Pisang Meningkatkan Kesuburan Tanah dan Ketersediaan Hara pada Budidaya Lada Perdu Secara Terapung Salsabila, Nadhira Ghea; Bernas, Siti Masreah
Acta Solum Vol. 4 No. 1 (2025): November 2025
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v4i1.3526

Abstract

Shrub pepper (Piper albi Linn) is a nutrient-demanding plant that requires additional fertilization to achieve optimal growth, especially in floating cultivation systems where nutrient availability is limited. Liquid organic fertilizer (LOF) derived from banana waste offers a sustainable alternative to enhance soil fertility and plant performance. This study aimed to evaluate the effects of banana-waste-based LOF on soil organic carbon, total nitrogen in soil and plant tissue, and the vegetative growth of shrub pepper (Piper albi Linn). The experiment was arranged in a randomized block design with two treatments: P0 (0 mL plant⁻¹) and P1 (50 mL plant⁻¹), applied weekly throughout the experimental period. The application of LOF significantly increased soil organic carbon and total nitrogen compared with the control. The P1 resulted in the highest soil organic carbon and nitrogen and enhanced nitrogen uptake. Furthermore, LOF application increased vegetative growth, particularly leaf number, indicating a positive response to increased nutrient availability. In conclusion, banana-waste-based LOF efficiently provides essential nutrients and improves soil fertility in floating cultivation systems. The findings highlight its potential as an environmentally friendly soil amendment to support sustainable production of shrub pepper (Piper albi Linn) and reduce reliance on chemical fertilizers.
Co-Authors Adipati Napoleon Agus Hermawan Bakri Bakri Imanudin, M.S. Siti Masreah Bernas Soleha Soleha