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All Journal Agrikultura Journal of Tropical Soils 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 AGROHITA Adimas : Jurnal Pengabdian Kepada Masyarakat Jurnal Hilirisasi IPTEKS (JHI) Jurnal Tanah dan Iklim Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Andalasian International Journal of Applied Science, Engineering, and Technology Jurnal Riset Perkebunan (JRP) Jurnal Pengabdian kepada Masyarakat Dewantara Agricultural Revolution Journal
Herviyanti Herviyanti
Faculty Of Agriculture, Universitas Andalas
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Veterinary Other

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The Study of Laccase Activity as a Biosensor for Peatland Degradation in Oil Palm Plantations in Pesisir Selatan of West Sumatra: The Study of Laccase Activity as a Biosensor for Peatland Degradation in Oil Palm Plantations in Pesisir Selatan of West Sumatra Harianti, Mimien; Budi Prasetyo, Teguh; Maira, Lusi; Junaidi, Junaidi; Herviyanti, Herviyanti; Anwar, Syaiful; Kasim, Susilawati
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 3 (2023): November 2023
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v3i3.113

Abstract

The aim of the research was to study enzyme activity as biosensors for peatland degradation in oil palm plantations. The study was conducted in Pesisir Selatan,West Sumatra, on two peatlands with different thicknesses and location coordinates, namely peat with a thickness of <3 m S: 02o18'45.5", 101o00’37.3” and peat with a thickness >3 m S: 02o20’07.5”, E: 101o00’22”. The oil palm in these two locations is 11 years old (planting year of 2007). Observations and sampling of peatlands were carried out on the plantation blocks using the transect method. The transect was set perpendicular to the drainage canal. Peat samples were collected outside the roots (non-rhizosphere) of oil palm. Observation sites were at a distance of 5, 15, 25, 50, 75, 100, 150 m from the edge of the drainage canal and at the thickness of the root layer of 0-25 and 25-50 cm. Peat characteristics observed were water table level, laccase activity, water content, pH, total Fe, and Cu. The water table level in one transect ranged from 60-80 cm and was still within tolerable limits. The laccase activity as a peat degradation biosensor in oil palm plantations in Pesisir Selatan peatland was higher in the 0-25cm layer with an average of <0.5 µmol/g. The increase in water content decreased the laccase activity along with increasing of the distance from the drainage canal and the thickness of the peat layer. The increase in Fe and Cu resulted from increased levels of ash, particularly in peat with a thickness of <3 m, may suppress laccase activity. Peatland in the oil palm plantation of Pesisir Selatan is still relatively stable despite the decomposition processes characterized by laccase activity as a biosensor for peat degradation.
Effect of Sub-Bituminous Coal on Negative Charge Activity on Secondary Forest and Horticultural Land Contaminated with Pesticides in Sungai Pua, Agam Herviyanti, Herviyanti; Maulana, Amsar; Prasetyo, Teguh Budi; Lita, Arestha Leo; Ryswaldi, Ridho
AGRIVITA Journal of Agricultural Science Vol 46, No 1 (2024)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v46i1.3616

Abstract

Pesticides are increasingly used to deal with crop-disrupting organisms. However, only 1% are on target, and the rest threaten agricultural ecology. This research aims to study the effect of Sub-bituminous coal (SC) on the change of negative charge activity (NCA) on two types of land, namely secondary forest (SF) and pesticide-contaminated horticultural land (HL-P). Two studies respectively used a completely randomized design (CRD) with three replications on two land types and five doses, namely: A = control or 0 t/ha [0 g SC/500 g soil]; B = 10 t/ha [2.5 g SC/500 g soil]; C = 20 t/ha [5.0 g SC/500 g soil]; D = 30 t/ha [7.5 g SC/500 g soil]; and E = 40 t/ha [10 g SC/500 g soil]. The results show that the effect of 40 t/ha SC can increase NCA on the surface of soil colloids (ΔpH) by 43% in SF and 23% in HL-P. The effect of 40 t/ha SC on the two types of land has a significant effect on increasing pH H2O, EC, CEC, and OM composition, respectively, by 0.70; 0.04 dS/m; 44.30 cmol(+)/kg and 7.60% in SF and 0.33; 0.01 dS/m; 26.89 cmol(+)/kg and 3.00% in HL-P, compared to the control.
SOSIALISASI RENCANA PELAKSANAAN MODEL DAERAH ALIRAN SUNGAI MIKRO PADA SUB DAS LUBUK PERAKU KOTA PADANG Munir, Jamilah; Berd, Isril; Herviyanti, Herviyanti; Junaidi, Junaidi; Nefilinda, Nefilinda; Prihartono, Agus Teguh
ADIMAS Jurnal Pengabdian Kepada Masyarakat Vol 7 No 1 (2023): Maret 2023
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/adi.v7i1.4997

Abstract

Hasil survey awal  membuktikan adanya penurunan kualitas lingkungan DAS  Arau sebagai akibat pola pengelolaan sumberdaya yang tidak ramah lingkungan dan meningkatnya potensi konflik para pemangku kepentingan yang terkait (stakeholders). Tujuan kegiatan adalah melakukan sosialisasi penetapan model DAS Mikro (MDM). Metoda yang dilakukan di Kampung Padayo pada Bulan  Juni 2021, dengan mengumpulkan informasi dari keinginan masyarakat terhadap penerapan MDM di kawasan Sub DAS Lubuk Peraku untuk pengelolaan DAS secara berkesinambungan.   Kegiatan sosialisasi  dilakukan di kawasan Sub DAS Lubuk Peraku di Kelurahan Indarung, Kecamatan Lubuk Kilangan, Kota Padang.. Dari hasil sosialisasi membuktikan masyarakat belum memanfaatkan tanahnya sesuai azas konservasi, dan belum memahami teknik konservasi yang benar di lahan pertaniannya.  Harapan masyarakat dari kegiatan tersebut adalah;  Terbukanya akses jalan dari Kampung Padayo dan akses wisata ke Gua Kelelawar tanpa melalui PT Semen Indonesia. Bantuan sarana prasarana jalan yang memadai.  Terbukanya akses wisata Gua Kelelawar.  Meningkatnya kesejahteraan masyarakat melalui berbagai program kegiatan yang melibatkan masyarakat.  Menanam tanaman produktif namun dapat menjaga kawasan resapan dengan menahan air yang cukup tinggi, tanaman yang diharapkan ada petai, jengkol, buahan lainnya serta beberapa tanaman kekayuan.
Dynamics of Phosphorus Sorption and Desorption in Ultisols Ameliorated with Humic Substances from Potential Ameliorants Amsar Maulana; Dewi Rezki; Irwan Darfis; Zahlul Ikhsan; Herviyanti Herviyanti
Agricultural Revolution Journal Vol. 1 No. 2 (2025): Agricultural Revolution Journal
Publisher : CIB Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64570/agrivolution.v1i2.32

Abstract

Ultisols have a very high P sorption capacity, which limits the availability of P to plants. Therefore, it is necessary to understand the P sorption-desorption mechanism after humic substances (HS) amelioration to improve fertilizer efficiency and land productivity. This study has examined the complexity of phosphorus fixation and the potential of HS in modifying the surface charge of Ultisols. This study used the batch equilibrium method and the Freundlich and Langmuir isotherm model approaches. Meanwhile, the surface charge characteristics of Ultisols, amended with humic substances (HS) from various potential ameliorants (control, HS-chicken manure, HS-black soldier fly, HS-wet decanter solid, and HS-peat), were evaluated using a completely randomized design with three replications. The HS from potential ameliorants significantly increases pH, PZC, electrical conductivity (EC), mineral and organic matter composition, CEC, and reduces potential redox (Eh), thereby increasing the soil's negative charge and buffering capacity. The HS—wet decanter solid and chicken manure were most effective, as they were proven to remove Al-exchange to unmeasurable levels through strong complexation between Al³⁺ and carboxylate and phenolic groups. The HS—wet decanter solid and chicken manure also drastically reduce P sorption and increase desorption through ligand competition and blocking of Al/Fe reactive sites, which resulted in increased P availability up to >600 mg kg-1 P2O5 at a concentration of 1000 mg L-1 P or 2290 mg kg⁻¹ P₂O₅ or 6.37g SP-36 per liter or 6.37 kg SP-36 per hectare for an application volume of 1,000 liters per hectare.
Synergistic impact of pollution from microplastics and glyphosate herbicides on the biophysics of horticultural land with different soil orders in Baso, West Sumatra, Indonesia Darfis, Irwan; Maulana, Amsar; Harianti, Mimien; Rezki, Dewi; Herviyanti, Herviyanti
Journal of Degraded and Mining Lands Management Vol. 13 No. 2 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.132.9963

Abstract

Increased use of plastic mulch and glyphosate herbicides may lead to synergistic effects on soil properties, particularly in horticultural land. This study examined the synergistic effects of microplastics and glyphosate herbicides on the biophysics of horticultural land across different soil orders in Baso, West Sumatra, Indonesia. Soil sampling followed a quantitative, random survey approach. Sampling testing was conducted using a 2 x 4 factorial randomized block design with three groups. The first factor comprised two different land uses (forest land as a control and horticultural land), and the second factor comprised four soil orders (Entisols, Inceptisols, Ultisols, and Oxisols) at a depth of 0-20 cm. The transition of horticultural land significantly interacted with differences in soil orders in Baso, affecting bulk density, porosity, the sand fraction, and soil enzymatic activity through synergistic effects of microplastic pollution and glyphosate herbicide residues. The main effect of differences in land use between forest and horticultural land was not significant on biophysical properties, but was significant on pollutants. However, the main effect of different soil orders was insignificant for biophysical properties but significant for pollutants, particularly microplastics. The synergistic impact of microplastic pollution was positively related to glyphosate (r = 0.608**; y = 0.0162x + 2.4476; R² = 0.3697), which has the potential to increase pollutant persistence.
Removal of glyphosate on Inceptisols ameliorated with biochar derived from young coconut waste Monikasari, Moli; Lita, Arestha Leo; Prasetyo, Teguh Budi; Maulana, Amsar; Hidayat, Endar; 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.
Characteristics of inceptisol ameliorated with rice husk biochar to glyphosate adsorption Herviyanti, Herviyanti; Maulana, Amsar; Lita, Arestha Leo; Prasetyo, Teguh Budi; Monikasari, Moli; Ryswaldi, Ridho
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 19, No 2 (2022): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v19i2.61614

Abstract

As an ameliorant, rice husk biochar (RHB) can improve soil quality and long-term carbon absorption and interaction with glyphosate during adsorption. This study investigated the ability of Inceptisol ameliorated with RHB to absorb glyphosate. Inceptisol ameliorated with 40-t ha-1 RHB increased the soil surface charge (ΔpH) by improving soil pH H2O, electrical conductivity, cation exchange capacity, and soil organic matter. Linear and nonlinear models showed that fitting Langmuir and Freundlich isotherms is suitable for this study. The isotherm adsorption of glyphosate sequentially occurs in the Freundlich and Langmuir models (Inceptisol + 40-t ha-1 RHB > Inceptisol), where the Freundlich model (R2 = 0.938) is dominated by glyphosate adsorption on Inceptisol + 40-t ha-1 RHB with n of 0.46 and KF of 1.747 mg kg-1, whereas the Langmuir model (R2 = 0.8608) with Qm of 30.01 mg kg-1 and KL of 0.08 L mg-1 at a concentration level of 100 ppm and pH of the glyphosate solution 5.20 units. The glyphosate adsorption was also supported by changes in functional groups, where Fourier transform infrared spectroscopy shows a decrease in transmittance in the O-H; C=C; C-O; C-H, and mineral groups, indicating an increase in the adsorption capacity in Inceptisol ameliorated with 40-t ha-1 RHB. This study indicated that the physicochemical properties of Inceptisol are important in controlling the glyphosate adsorption ability of RHB in soils.
Biochar Quality During Slow Pyrolysis from Oil Palm Empty Fruit Bunches and Its Application as Soil Ameliorant Maulana, Amsar; Harianti, Mimien; Athiyya, Salma; Prasetyo, Teguh Budi; Monikasari, Moli; Darfis, Irwan; Rezki, Dewi; 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 A. Maulana Adrinal Agustian Agustian Amrizal Saidi Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Armi Meirita Asmar Asmar Athiyya, Salma Azizah R Benito Heru Purwanto Berd, Isril Budi Prasetyo, Teguh Cesar Welya Refdi Chatarina Umbul Wahyuni Chici Anche Darfis, Irwan Darmawan, Darmawan Darusman Darusman David David Dewi Rezki Emalinda, Oktanis F. AHMAD Fachri Ahmad Fachri Ahmad Fachri Ahmad Giska Oktabriana Gusmawartati Gusmawartati Gusnidar, G Harianti, Mimien Hayati, PK Dewi Hermasah Hermansah Hidayat, Endar Isril Berd Jamilah, Jamilah Jamsari Jamsari Junaidi Junaidi Junaidi Junaidi Junaidi Junaidi Juwita, Pitri Kasim, Susilawati Kurnianto, Reza Tri Lita, Arestha Leo M. Harianti M. Harianti Maidia Solfianti Maidia Solfianti Martinius Martinius Maulana, Amsar Melinda Noer Mimien Harianti Mimien Hariyanti Monikasari, Moli Munir, Jamilah Nefilinda Nefilinda Nefilinda Nefilinda Netti Herawati Nurhajati Hakim Prasetyo , Teguh Budi Prihartono, Agus Teguh Rina Alfina Riza Syofiani Ruhaimah Ruhaimah Ryswaldi, Ridho Siska Efendi Sutoyo Sutoyo Syafrimen Yasin Syaiful Anwar T. BUDI PRASETYO Tanjung, Ellsya Tatalia Augustin Putri Teguh Budi Prasetyo TRIMURTI HABAZAR Trizelia . Warnita Zahlul Ikhsan