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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Agrikultura Journal of Tropical Soils Jurnal Pilar Sains JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science Jurnal Solum SAINS TANAH - Journal of Soil Science and Agroclimatology Caraka Tani: Journal of Sustainable Agriculture Jurnal Eksplora Informatika Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Andalasian International Journal of Applied Science, Engineering, and Technology AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Prosiding Seminar Nasional Universitas Serambi Mekkah Journal Arunasita
Teguh Budi Prasetyo
Andalas University
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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The Interaction between Hg and N on Ex-gold Mining Soil Amsar Maulana; Mimien Harianti; Teguh Budi Prasetyo; Herviyanti Herviyanti
Jurnal Ilmu Pertanian Indonesia Vol. 31 No. 2 (2026): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.31.2.225

Abstract

Mercury (Hg) contamination poses a major hazard to ecosystems because it alters plant physiology, biochemistry, and metabolism. The impact is a competition for plant absorption space between Hg and nutrients (such as nitrogen) in the soil and plant system. The goal of this research was to quantitatively examine the interplay between mercury and nitrogen in ex-gold mining soil in Dharmasraya, West Sumatra. This study used a survey method to assess the diversity of ex-gold mining areas owned by each region (area and mining spots) at depths ranging from 0−20 cm to 20−40 cm, with three (Tebing Tinggi at spot 1 and Gunung Medan) to five (Tebing Tinggi at spot 2, Sikabau, and Koto Padang) replicates and a total of 54 samples. The ex-gold mining soil at Dharmasraya, has low fertility levels, including pH (4.03), CEC [7.15 cmol(+) kg−1], OC (0.04% C), and total N (0.09% N), as well as a very high Hg content of 4.18 mg kg−1. The interaction between mercury and nitrogen was non-significant at the 0.01 (2-tailed) level, with r = 0.167 and a linear equation y = 3.2164x + 3.8849; R² = 0.0276, indicating that mercury does not compete with N nutrients in ex-gold mining soil. However, the release of N by vegetation decomposition (OM-N) through the process of mineralization of C, as evidenced by the positive correlation between N and organic C (r = 0.645** with linear equation y = 0.5445x - 0.0115; R² = 0.4153), and also the release of Hg, which is absorbed from OM-N, as evidenced by the positive correlation between Hg and OC (r = 0.417** with linear equation y = 0.0182x − 0.0379; R² = 0.1744). Keywords: Dharmasraya, ex-gold mining soil, mercury, nitrogen
Removal of glyphosate on Inceptisols ameliorated with biochar derived from young coconut waste Moli Monikasari; Arestha Leo Lita; Teguh Budi Prasetyo; Amsar Maulana; Endar Hidayat; Herviyanti Herviyanti
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 22, No 2 (2025): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v22i2.93091

Abstract

Young Coconut Waste Biochar (YCWB) serves as an ameliorative agent that enhances soil quality and facilitates glyphosate removal, particularly in Inceptisols. This study aimed to evaluate the capacity of Inceptisols enhanced with YCWB to eliminate glyphosate, a commonly used herbicide. Inceptisols amended with 40 t ha⁻¹ YCWB demonstrated an increased surface charge, improving soil properties such as acidity (pH), electrical conductivity (EC), cation exchange capacity (CEC), and soil organic matter (SOM). The adsorption capacity was determined to be 0.87 mg g⁻¹ (or 870.27 mg kg⁻¹) at pH 5.07, under a glyphosate concentration of 100 mg L⁻¹. Glyphosate removal was facilitated by changes in functional groups, as indicated by Fourier-transform infrared spectroscopy (FT-IR), which showed reduced transmittance of O-H, C=C, C-O, C-H, and mineral groups. These modifications indicate an enhancement in the sorption capacity of Inceptisols treated with 40 t ha⁻¹ YCWB. The glyphosate adsorption isotherms followed the sequence: Langmuir > Freundlich model, with performance ranking as soil + 40 t ha⁻¹ YCWB > unamended soil (Inceptisols). The respective R² values were R² = 0.9889 > R² = 0.9739 for the Langmuir model and R² = 0.9953 > R² = 0.9099 for the Freundlich model, confirming a strong interaction relationship (R² > 0.9). This indicates that glyphosate removal occurs through simultaneous or alternating physical and chemical processes. Modifying the surface charge of Inceptisols using biochar-based amelioration technology derived from biomass waste, such as young coconut waste, is critical for improving glyphosate removal efficiency.
Biochar Quality During Slow Pyrolysis from Oil Palm Empty Fruit Bunches and Its Application as Soil Ameliorant Amsar Maulana; Mimien Harianti; Salma Athiyya; Teguh Budi Prasetyo; Moli Monikasari; Irwan Darfis; Dewi Rezki; Herviyanti Herviyanti
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.93859

Abstract

The optimal utilization of oil palm empty fruit bunch (OPEFB) waste holds significant potential for biomass bioconversion via slow pyrolysis, presenting a promising alternative for producing high-quality biochar as a soil ameliorant. This study investigates the effects of slow pyrolysis temperatures (≤ 300 °C) on the physicochemical properties of biochar derived from OPEFB and evaluates its efficacy as a soil ameliorant. This study utilized a completely randomized design (CRD) with three replications across two experiments. The first experiment assessed the effect of slow pyrolysis temperature on the quality of biochar derived from OPEFB, with treatments set at four temperatures (150, 200, 250, and 300 °C) levels. The second experiment evaluated the impact of the selected biochar on the surface charge of oil palm plantation soil, applying biochar at five different doses (0, 20, 40, 60, and 80 tons ha-¹). The potential temperature of 200 °C in slow pyrolysis had a significant effect on the quality of biochar from OPEFB with a yield ratio of 27.84% char; proximate (91.95% volatile matter and 0.81% fixed carbon), cation exchange capacity (CEC) [167.73 cmol(+) kg-1], and macro and micronutrients (e.g., C, N, P, K, Ca, Si, Fe, Cu, Zn, and Mn). The potential of O-H, N-H, C-H, and C=O functional groups of biochar from OPEFB for nutrient availability and absorption efficiency proven by the effect of 40 tons ha-1 biochar from OPEFB which significantly increased 80% of soil surface charge [pH by 0.80; organic matter (OM) composition by 19.8%, CEC by 11 cmol(+) kg-1] and nutrients [0.93% C; 0.04% N; 17.57 ppm P2O5; 0.65 cmol(+) kg-1 K] on Inceptisols.
Co-Authors , Kasli . DARMAWAN . Gusmini . Herviyanti . HERVIYANTI Agustian Agustian Ahmad, Fachri Amrizal Saidi Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Andini, Liza Anggun Fitria Yenad Anwar, Al Hidayati Maulana Aprizal Zainal Arestha Leo Lita Auzar Syarif Azwar Rasyidin Batara, Dewi Syaputri Benito Heru Purwanto Darfis, Irwan Darmawan, Darmawan Darusman Darusman Dewi Hayati Dewi Rezki Edri Yeni elara resigia Endar Hidayat Enita Enita Enita, Enita Erwin Yudi Hidayat Etti Swasti Fachri Ahmad Fachri Ahmad Farah Ilham Gusnidar, G Hamzar Suyani Harianti, Mimien Hasmiandy Hamid Hayati, PK Dewi Hazli Nurdin Hermansah Hermansah Hermansah Hermansyah Hermansyah Hermansyah Hermansyah Hijri, Nurul Husnita Irfan Suliansyah Junaidi Junaidi Junaidi Junaidi Juwita, Pitri Kurnianto, Reza Tri Lita, Arestha Leo Maidia Solfianti Maidia Solfianti Maulana, Amsar Mimien Harianti Moli Monikasari Moli Monikasari Monikasari, Moli Netti Herawati Nur Afni Evalia Nurhajati Hakim Nurhajati Hakim Nurhajati Hakim Nurhajati Hakim Panca Jarot Santoso Rahmi Fitri Ruhaimah Ruhaimah Ryswaldi, Ridho Salma Athiyya Sandra Prima Sanna Paija Hasibuan Septi Angga Wardahana Sutoyo Sutoyo Sutoyo Sutoyo Syafrimen Yasin Tanjung, Ellsya Tatalia Augustin Putri Widodo Haryoko Yadi Jufri Yulnafatmawita Yulnafatmawita Zuldadan Naspendra Zulfadly Syarif