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All Journal Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan)
Yudhanto, Katon Dwi
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Agriculture, Biological Sciences & Forestry Environmental Science

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ENHANCING THE SANDY SOIL STRUCTURE OF THE SAMAS COASTAL AREA USING ANAEROBIC DIGESTION SLUDGE DERIVED FROM PALM OIL MILL EFFLUENT Lisan, Ahmad Rif'an Khoirul; Amalia, Dwi; Dewanti, Tesa Oktafira; Pratama, Aldy Putra; Putra, Rizki Amanda; Yudhanto, Katon Dwi; Azzahra, Hilmaniya Shofia; Wardani, Nina Anggita
Jurnal Tanah dan Sumberdaya Lahan Vol. 12 No. 1 (2025)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2025.012.1.10

Abstract

This study investigated the potential of anaerobic digestion sludge derived from palm oil mill effluent (POME) to enhance the structure of sandy soils in the Samas Coastal Area, Bantul Regency, Yogyakarta. Sandy soils, having low water retention and nutrient-holding capacity, present significant challenges for sustainable agriculture. By applying different volumes of digestate (0 ml, 50 ml, 100 ml, 200 ml, 400 ml, and 800 ml per kilogram of soil) in a 30-day greenhouse experiment, this research assessed the impact of POME sludge on soil structure improvements, particularly focusing on aggregation, porosity, and bulk density. Treatments with higher digestate volumes, especially 800 ml/kg, yielded substantial improvements in soil aggregation, contributing to better moisture retention. Enhanced aggregation facilitated improved water retention and root penetration, indicating that anaerobic digestion sludge could effectively amend sandy soil limitations. These findings underscore the potential of POME-derived organic amendments as sustainable soil conditioners, offering a dual benefit of waste valorization and enhanced agricultural productivity for marginal soils in coastal areas.
ENHANCING THE SANDY SOIL STRUCTURE OF THE SAMAS COASTAL AREA USING ANAEROBIC DIGESTION SLUDGE DERIVED FROM PALM OIL MILL EFFLUENT Lisan, Ahmad Rif'an Khoirul; Amalia, Dwi; Dewanti, Tesa Oktafira; Pratama, Aldy Putra; Putra, Rizki Amanda; Yudhanto, Katon Dwi; Azzahra, Hilmaniya Shofia; Wardani, Nina Anggita
Jurnal Tanah dan Sumberdaya Lahan Vol. 12 No. 1 (2025)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2025.012.1.10

Abstract

This study investigated the potential of anaerobic digestion sludge derived from palm oil mill effluent (POME) to enhance the structure of sandy soils in the Samas Coastal Area, Bantul Regency, Yogyakarta. Sandy soils, having low water retention and nutrient-holding capacity, present significant challenges for sustainable agriculture. By applying different volumes of digestate (0 ml, 50 ml, 100 ml, 200 ml, 400 ml, and 800 ml per kilogram of soil) in a 30-day greenhouse experiment, this research assessed the impact of POME sludge on soil structure improvements, particularly focusing on aggregation, porosity, and bulk density. Treatments with higher digestate volumes, especially 800 ml/kg, yielded substantial improvements in soil aggregation, contributing to better moisture retention. Enhanced aggregation facilitated improved water retention and root penetration, indicating that anaerobic digestion sludge could effectively amend sandy soil limitations. These findings underscore the potential of POME-derived organic amendments as sustainable soil conditioners, offering a dual benefit of waste valorization and enhanced agricultural productivity for marginal soils in coastal areas.
ENHANCING THE SANDY SOIL NITROGEN CONTENT OF THE SAMAS COASTAL AREA USING ANAEROBIC DIGESTION SLUDGE DERIVED FROM PALM OIL MILL EFFLUENT Wardani, Nina Anggita; Lisan, Ahmad Rif'an Khoirul; Amalia, Dwi; Dewanti, Tesa Oktafira; Pratama, Aldy Putra; Putra, Rizki Amanda; Yudhanto, Katon Dwi; Azzahra, Hilmaniya Shofia
JOURNAL OF TROPICAL SOILS Vol. 31 No. 1: January 2026 (In Progress)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts..v31i1.%p

Abstract

Sandy coastal soils, characterized by poor fertility and low nitrogen (N) content, present significant challenges for sustainable agriculture. This study investigates the potential of anaerobic digestion (AD) sludge derived from palm oil mill effluent (POME) as an organic amendment to enhance soil N in Samas Beach’s degraded sandy soils. Using a completely randomized design (CRD), six digestate application rates (0–800 mL/kg soil) were tested over a 30-day incubation period. Results demonstrated a strong linear dose-response relationship (R² = 0.995), with the highest treatment (A5: 800 mL/kg) increasing soil N by 140% (0.005% to 0.012%) compared to the control. The Kjeldahl method confirmed efficient mineralization of organic N into plant-available NH₄⁺ and NO₃⁻, supported by microbial activity from cow dung inoculum. Tukey’s HSD test revealed all treatments significantly improved N content (p < 0.05), with 400 mL/kg (A4) identified as the optimal rate—balancing efficacy (0.011% N) with economic and environmental practicality. This study highlights POME-derived sludge as a cost-effective, sustainable alternative to synthetic fertilizers for rehabilitating coastal soils, aligning with circular economy principles by valorizing agro-industrial waste.
Co-Authors Amalia, Dwi Azzahra, Hilmaniya Shofia Dewanti, Tesa Oktafira Lisan, Ahmad Rif'an Khoirul Pratama, Aldy Putra Putra, Rizki Amanda Wardani, Nina Anggita