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All Journal Jurnal Ilmu Pertanian Indonesia 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
Department Of Soil Science, Faculty Of Agriculture, Andalas University, Limau Manis, Padang 25163
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.
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.
Ethno-agronomic Management of Horticultural Inceptisols under Monoculture and Polyculture Using Nagari Local Ameliorant Resource Formulations Herviyanti Herviyanti; An Nisa Mutiara Fathi; Irwan Darfis; M. Hafizh Ash Shiddiq; Defry Jonica Putri; Amsar Maulana; Ridho Ryswaldi
Caraka Tani: Journal of Sustainable Agriculture Vol 41, No 2 (2026): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v41i2.108614

Abstract

Low soil surface charge and nutrient imbalances in Inceptisols threaten horticultural productivity in monoculture and polyculture systems. Ethno-agronomy management using local resources is expected to be a solution to these issues. The research aims to assess the effects of Nagari local ameliorant resource formulations (LARFs; bamboo biochar (BB), Tithonia green fertilizer (TGF), chicken manure (CM), and Agam compost (CA)) on surface charge and nutrients. A randomized complete block design (RCBD) was used to test 5 treatments: Control, LARF-I (BB + TGF + CM), LARF-II (BB + TGF + CA), conventional farming (CF), and Ministry of Agriculture Recommendations (MAR), with 3 replications, in Banuhampu, Agam. LARFs significantly improved soil surface charge properties (pH H2O, electrical conductivity (EC), percentage of organic matter (%OM), and cation exchange capacity (CEC)) and macronutrient levels (organic C (OC), total N, available P, and exchangeable K) compared with the control and conventional farming. LARF-I excelled in pH H2O, EC, %OM, and CEC under monoculture (+16–170%) and polyculture (+23–92%), outperforming CF by 11–157%. LARF-II led in OC (+91–112%) and total N (+37–441%), while LARF-I dominated available P (+122–328%) and exchangeable K (+60–78%). These enhancements increased crop nutrient uptake (N, P, and K) by up to 170% in string bean (monoculture) and broccoli (polyculture), with LARF-I achieving the highest overall increase. Yields increased most under LARF-II (string bean +33%, broccoli +74%, lettuce +70% compared to the control; 31–43% above CF), followed closely by LARF-I (+29–65% from the control; 21–29% above CF). These improvements enhanced soil fertility and nutrient availability, supporting better nutrient uptake and crop performance. LARFs promote sustainable restoration of soil fertility and support ethno-agronomic practices in horticulture.
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.
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
PENGUATAN KELEMBAGAAN PETANI BARAMBAN DALAM PEMASARAN SAYUR SEHAT BERSERTIFIKAT PRIMA 3 DI KECAMATAN BANUHAMPU KABUPATEN AGAM, SUMATERA BARAT Melinda Noer; Herviyanti Herviyanti; Trimurti Habazar; Cesar Welya Refdi
Jurnal Hilirisasi IPTEKS Vol. 4 No. 2 (2021)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v4i2.497

Abstract

The Baramban Farmers Group, since 2014, has been carrying out healthy vegetable farming with vegetable products that have been certified Prima 3. However, until now, the management of healthy vegetable farming by the Baramban Farmers Group in Banuhampu District, Agam Regency has not experienced much development in farming because it has not created a broad market with prices that favor the welfare of farmers. Strengthening farmer institutions in marketing healthy vegetables is thus very important and have become an essential element in developing healthy vegetable agribusiness in local, national, and even global markets. The method used is counseling, coaching and mentoring. This service activity is planned to be carried out over the next five years, starting with building a cooperation agreement with the Baramban farmer group starting in 2020. Several alternative solutions to solve the problems of healthy vegetable farmer group partners proposed and agreed upon by the Baramban Farmer Group are: a. Carry out mentoring activities for healthy vegetable farmers by transferring resources from universities through integrated science an agribusiness perspective, b, empowering farmers based on group institutional strengthening to build collective action that is independent of farmers to drive healthy vegetable markets, c. Facilitate farmers to create healthy vegetable market segments through modern markets and online markets with information technology 4.0 and 4. Building partnerships with Transmart as a modern market on a national scale and has a global-scale marketing network. The conclusion is that farmer groups are willing to become partners of the Community Service Team in a community partnership program scheme to help businesses develop.
Pemberdayaan Gapoktan Sepakat Melalui Penguatan Lembaga Pemasaran Sayur Sehat Bersertifikat Prima Di Nagari Canduang Koto Laweh, Sumatera Barat Melinda Noer; Herviyanti Herviyanti; Cesar Welya Refdi; An NIsa Mutiara Fathi
Jurnal Hilirisasi IPTEKS Vol. 8 No. 4 (2025)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v8i4.901

Abstract

Empowering the Sepakat Farmers Group Association (Gapoktan) aims to strengthen the capabilities of Gapoktan, who cultivate Prima-certified vegetable horticulture, but has not been able to develop its agribusinesses that give an impact on economic improvement to its members. Since 2021, several types of vegetables produced by Gapoktan have been receiving certification from the West Sumatra Provincial Food Service as a guarantee that pesticide levels in these vegetables are below the threshold, making them safe for consumption. However, Gapoktan still faces obstacles in marketing, because the market does not differentiate the price of certified and uncertified vegetables. The activity methods include outreach, practices for processing inputs based on local resources, and processing healthy vegetable products into snacks to add value and durability, as well as strengthening marketing institutions for Prima-certified products. Gapoktan has been linked with the Canduang Koto Laweh State-Owned Enterprise as a marketing partner for Prima-certified vegetables, opening new marketing relationships to intermediate consumers, such as hospitals. The Agam Regency Government will also revitalize the Agribusiness Sub-Terminal (STA) and the Agribusiness Micro-Credit Institution (LKMA) to receive Prima-certified vegetable products at more reasonable prices. In the short term, this empowerment program for farmer groups (Gapoktan) has resolved marketing barriers, increased product added value, and expanded access to agricultural markets. It is hoped that in the long term, through strengthened marketing institutions, Prima-certified vegetable products will be more competitive and their market share will expand, thereby further increasing farmer interest and welfare in developing Prima-based healthy vegetable farming.
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.
Co-Authors A. Maulana Adrinal Agustian Agustian Amrizal Saidi Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana An NIsa Mutiara Fathi An Nisa Mutiara Fathi Arestha Leo Lita Armi Meirita Asmar Asmar 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 Defry Jonica Putri Dewi Rezki Emalinda, Oktanis Endar Hidayat F. AHMAD Fachri Ahmad Fachri Ahmad Fachri Ahmad Giska Oktabriana Gusmawartati Gusmawartati Gusnidar, G Harianti, Mimien Hayati, PK Dewi Hermasah Hermansah Isril Berd Jamilah, Jamilah Jamsari Jamsari Junaidi Junaidi Junaidi Junaidi Junaidi Junaidi Juwita, Pitri Kasim, Susilawati Kurnianto, Reza Tri Lita, Arestha Leo M. Hafizh Ash Shiddiq M. Harianti M. Harianti Maidia Solfianti Maidia Solfianti Martinius Martinius Maulana, Amsar Melinda Noer Mimien Harianti Mimien Hariyanti Moli Monikasari Moli Monikasari Monikasari, Moli Munir, Jamilah Nefilinda Nefilinda Nefilinda Nefilinda Netti Herawati Nurhajati Hakim Prasetyo , Teguh Budi Prihartono, Agus Teguh Ridho Ryswaldi Rina Alfina Riza Syofiani Ruhaimah Ruhaimah Ryswaldi, Ridho Salma Athiyya Siska Efendi Sutoyo Sutoyo Syafrimen Yasin Syaiful Anwar T. BUDI PRASETYO Tanjung, Ellsya Tatalia Augustin Putri Teguh Budi Prasetyo TRIMURTI HABAZAR Trizelia Warnita Welya Refdi, Cesar Zahlul Ikhsan