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All Journal Jurnal Ilmu Pertanian Journal of Tropical Soils Jurnal Teknik Kimia MAPETA Plumula : Berkala Ilmiah Agroteknologi Journal of Degraded and Mining Lands Management Jurnal Ilmiah Pertanian Caraka Tani: Journal of Sustainable Agriculture BIOEDUSCIENCE Jurnal Pertanian Agros Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Agritrop : Jurnal Ilmu-Ilmu Pertanian (Journal of Agricultural Science) PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat jurnal Ilmu Pertanian (Agricultural Science) PEDULI: Jurnal Imiah Pengabdian Pada Masyarakat Jurnal Agronomi Tanaman Tropika (JUATIKA) Asian Journal of Agriculture Soil REns Agroteknika Agrotechnology Research Journal Jurnal Pembelajaran dan Biologi Nukleus Agro Bali: Agricultural Journal Jurnal Peduli Masyarakat Jurnal Agrotropika Nusantara Science and Technology Proceedings AgriHealth: Journal of Agri-food, Nutrition and Public Health AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Batara Wisnu : Indonesian Journal of Community Services Journal of Community Service Acta Solum Agrocentrum
Wanti Mindari
Universitas Pembangunan Nasional Veteran Jawa Timur
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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Effectiveness of Silica Humate in Improving Soil Quality in Paddy Field Contaminated by Industrial Waste Nanda Ajeng Kartika; Wanti Mindari; Siswanto Siswanto; M. Ghufron Chakim
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1913-1924

Abstract

Soil degradation caused by industrial waste in Sidoarjo Regency has led to a decline in agricultural productivity, necessitating soil rehabilitation efforts. This study aimed to evaluate the effectiveness of silica humate as a soil amendment on paddy fields contaminated by industrial waste. The experiments were arranged according to the Factorial Complete Randomized Design, where the first factor: 3 kinds of industrial waste namely the pharmaceutical, livestock feed, and paper industry. Second factor; 5 doses of silica humat (0, 10, 20, 30, and 40 kg/ha). The parameters included soil pH, cation exchange capacity (CEC), total nitrogen (total-N), and available phosphorus (available-P), measured at 14 and 56 days after application (DAA). Results showed that the effectiveness of silica humate varied depending on the type of industrial waste and increased over time. On land contaminated with pharmaceutical waste, silica humate increased CEC from 44.34 to 52.52 cmol(+)/kg and available-P from 27.21 to 36.69 ppm at low doses. Land contaminated with animal feed waste showed the best results at a dose of 20 kg/ha, while land contaminated with paper industry waste required higher doses. These findings suggest that silica humate is promising as a viable soil amendment strategy, though optimal dosage rates must be tailored to specific industrial contamination types for maximum rehabilitation effectiveness.
Mitigating Heavy Metal Contamination in Agricultural Soils with Biosilica-Humic Acid as Soil Amendment Strategies in Industrial Peripheries M Ghufron Chakim; Wanti Mindari; Purnomo Edi Sasongko
Acta Solum Vol. 3 No. 3 (2025): Juli 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.v3i3.3367

Abstract

Soil contamination by heavy metals poses a significant threat to sustainable agriculture, especially in areas adjacent to industrial zones. This study demonstrates that while the initial application of the biosilica-humic acid (BSi-HA) soil amendment did not result in statistically significant changes in soil chemical properties within the first 7 days of incubation, prolonged incubation for 60 days revealed meaningful effects, particularly in reducing heavy metal availability in soil. Significant decreases in iron (Fe) and lead (Pb) concentrations were observed over time, with Fe reductions ranging from 45–67% and Pb reductions between 8–40%. These results are attributed to the synergistic effect of functional groups in BSi-HA—especially the carboxyl (–COOH) and hydroxyl (–OH) groups in humic acid—which exhibit high metal-binding affinity under acidic conditions (pH ~5). Although soil fertility parameters such as C-organic content and cation exchange capacity (CEC) showed a declining trend due to microbial activity during incubation, the ability of BSi-HA to immobilize heavy metals without exceeding safe thresholds highlights its potential as a sustainable soil amendment. Moreover, previous findings indicating reductions of up to 90% for Pb and 76% for Cd in plant tissues further support the efficacy of BSi-HA in mitigating heavy metal contamination in agricultural soils near industrial zones. Further long-term studies are recommended to evaluate BSi-HA's remediation capacity, persistence, and impact on crop yield and food safety. Combining biosilica and humic acid offers a promising, eco-friendly approach for managing heavy metal contamination in soils.
PENGARUH PEMBERIAN PUPUK KANDANG DAN ZA (Zwavelzure Amonium) TERHADAP KETERSEDIAAN HARA DAN PERTUMBUHAN TANAMAN JAGUNG PADA ALFISOL GRESIK Faisal Muadun Faisal; Siswanto Siswanto; Wanti Mindari
JURNAL AGROTROPIKA Vol. 25 No. 1 (2026): Jurnal Agrotropika Vol 25 No 1, Mei 2026
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v23i2.8415

Abstract

Alfisol is one type of soil that chemically has a very low level of fertility, especially nutrients N, P, K and organic matter, therefore it is necessary to improve alfisol soil by applying manure and ZA. The purpose of this study was to examine the effect of manure and ZA (Zwavelzure Ammonium) in improving the chemical properties of alfisol soil and the best treatment. The research was conducted at the UPN Jatim Faculty of Agriculture in March - June 2023. The research method used a randomized group design RAK factorial with two factors. The first factor is the type of manure, namely without manure, chicken coop, cow pen and goat pen with a dose of 20 tons/ha each. The second factor is the concentration of ZA (Zwavelzure Ammonium) fertilizer, namely without ZA, ZA 100 kg/ha, ZA 200 kg/ha, ZA 300 kg/ha, each combination is repeated three times. The results showed that the application of manure types can improve the content of C-organic, CEC, P-available, and length of corn plants, the application of ZA fertilizer can reduce pH, while the interaction treatment of manure types and ZA fertilizer can increase the content of NH4+ (ammonium), NO3- (nitrate) and has no effect on C-organic, CEC, P-available, and length of corn.
Soil fertility dynamics under varying land use systems in Jatiarjo Village, Prigen Sub-district, Pasuruan, Indonesia PURNOMO EDI SASONGKO; WANTI MINDARI; MUHAMMAD RIZKY ROMADHON; HAMMADA HIDAYATURRACHMAN
Asian Journal of Agriculture Vol. 10 No. 2 (2026)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g100201

Abstract

Abstract. Sasongko PE, Mindari W, Romadhon MR, Hidayaturrachman H. 2026. Soil fertility dynamics under varying land use systems in Jatiarjo Village, Prigen Sub-district, Pasuruan, Indonesia. Asian J Agric 10 (2): g100201. https://doi.org/10.13057/asianjagric/g100201. Variations in land use, geographical conditions, and land management practices highly influence soil fertility. This study evaluated the soil fertility status of three dominant land-use systems-mixed garden, shrubland, and moorland in Jatiarjo Village, Prigen Sub-district, Pasuruan District, East Java, Indonesia. Three land use units, including mixed garden, shrubland, and moorland, were assessed using the Soil Fertility Index (SFI). Soil sampling was a random sampling method at a 0-20 cm depth, with 7 points in each land unit. Soil samples were analyzed for soil. Chemical characteristics included pH, organic carbon (C), total nitrogen (N), available phosphorus (P), exchangeable potassium (K), Cation Exchange Capacity (CEC), Base Saturation (BS), Aluminum Saturation (AS), and soil texture. Minimum Soil Fertility Indicators (MSFI) were identified using Pearson correlation and Principal Component Analysis (PCA), and the Soil Fertility Index (SFI) was calculated accordingly. Soil pH ranged from 5.15-6.44, organic C from 2.20-11.60%, total N from 0.12-1.06%, available P from 0.60-18.54 ppm, and exchangeable K from 0.09-0.15 μg/100 g. CEC was 24.44-43.97 me/100 g, while BS remained very low (5.31-10.01%). SFI indicated medium fertility across all land uses, averaging 0.62 in mixed gardens, 0.61 in shrublands, and 0.58 in moorlands. Higher SFI in mixed gardens reflected greater organic matter inputs, whereas lower fertility in moorlands was linked to minimal organic inputs and more intensive cultivation. This study highlights the significance of organic matter application and land conservation practices in sustaining and enhancing soil fertility, and also provides a scientific basis for targeted land management to sustain soil productivity in upland agroecosystems.
Changes in Chemical Properties of Sipramin-Affected Paddy Soil during Incubation with Humic Acid and Nitrogen Fertilizer Melinda Trisya Yulianto; Wanti Mindari; Rossyda Priyadarshini
AgriHealth: Journal of Agri-food, Nutrition and Public Health Vol 7, No 1 (2026): April
Publisher : Research and Development Center for Food, Nutrition and Public Health (P4GKM) LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrihealth.v7i1.110451

Abstract

Continuous use of Sipramin fertilizer can lead to sodium (Na+) accumulation in the soil. Sodium accumulation damages soil physical properties, which also affects the chemical quality and nutrient supply. This study aimed to evaluate the effects of various doses of humic acid and nitrogen fertilizer sources on soil chemical properties. This study was arranged in a factorial completely randomized design (CRD) with 2 factors: humic acid doses (0, 20, 40, and 60 kg ha-1) and nitrogen fertilizer types (control, NPK Phonska, Urea, KNO₃, and MAP) with a recommended rate of 92 kg ha-1. The study consisted of 20 treatment combinations with 3 replications, yielding a total of 60 experimental units arranged randomly. Soil samples were collected at 7 and 21 days after treatment (DAT) to analyze pH, organic C, cation exchange capacity (CEC), exchangeable Na, and available N (NH₄⁺ and NO₃-). The results showed that the interaction between humic acid and nitrogen fertilizer did not significantly affect the chemical properties of the Sipramin-affected soil. In general, the effects of both treatments depended on the parameters and the time of observation. At 7 DAT, several variables showed significant effects, whereas at 21 DAT, some of those effects were no longer significant.
Effect of Liquid Organic Fertilizer from Chicken, Goat, and Cow Manure on the Content of Nitrogen, Phosphorus, Potassium, and Lead in Soil, and on Stem and Fruit Yield of Tomato Wanti Mindari; Bakti Wisnu Widjayani; Purnomo Edi Sasongko; Farichah Isnaini; Siswanto Siswanto
Agrotechnology Research Journal Vol 8, No 2 (2024): Agrotechnology Research Jurnal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrotechresj.v8i2.95189

Abstract

Using manure in the form of liquid organic fertilizer (LOF) influences the heavy metal levels absorbed by plants, which can affect both plant quality and human health. This research aims to assess the impact of LOF on soil pH, total nitrogen, available phosphorus, lead levels, and the fruit yield of tomatoes. A factorial completely randomized design (CRD) was employed, with the first factor being three types of LOF from chicken, goat, and cow manure and the second factor being three doses of LOF: 5, 10, and 15 mL. The study utilized tomato plants grown in latosol soil. Results indicated that the application of LOF from the three manure types affected soil nitrogen, soil lead, and tomato yield. The addition of LOF also influenced lead content and tomato production. However, the use of chicken manure is not recommended due to high lead accumulation in soil and plants. The optimal LOF dose was found to be 5-10 mL, which maintained lead levels within safe limits. The best tomato fruit yield was achieved with 5 mL of goat manure LOF, resulting in low metal accumulation.
The Optimization of Biosilica and Humic Acid to Increase Soil Nutrient Availability and Nutrient Uptake in Rice Plant in Sandy Soil Wanti Mindari; M. Ghufron Chakim; Bakti Wisnu Widjajani; Purnomo Edi Sasongko; Haidar Fari Aditya; Ahmad Mustapha Mohamad Pazi; Seca Gandaseca
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.v40i1.89018

Abstract

Nutrients in sandy soil are limited due to low absorption capacity and are easily leached or evaporated. Biosilica and humic acid extracted from compost and husk ash can improve the soil structure and absorption capacity to optimize the availability and uptake of nutrients. Therefore, this research aims to examine the optimal application dose of biosilica and humic acid to improve the chemical properties of soil with a sandy texture. The experiment was structured based on a completely randomized design (CRD). Factor 1 consisted of biosilica doses of 0, 0.5, 1.0, and 1.5 tons ha-1, while factor 2 comprised humic acid doses of 0, 20, 40, and 60 kg ha-1. Data analysis was performed using ANOVA, followed by Tukey’s Honest Significant Difference (HSD) test, correlation, and determination analysis. The study results indicate that the combination of biosilica and humic acid contributes to the changes in nutrient availability. The impact of the treatment was observed 90 days after application on the parameters of soil pH, organic C, total N, and exchangeable K. The effects of the treatment were also evident in plant nutrient uptake, specifically in total N in the roots and total K in the stems. The optimal combination for improving soil nutrient availability and nutrient uptake in plant tissues was a biosilica dose of 1.0 tons ha-1 (S2) and humic acid at 40 kg ha-1 (H2).
Application of Humic Acid and Gypsum Enhances Soil Nutrient Availability and Tomato (Solanum Lycopersicum) Yield in Mangrove-Derived Saline Soils Badriyatul Bahiro; Wanti Mindari; Moch. Arifin
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7671

Abstract

Background: This Research aims to evaluate the effect of humic acid and gypsum application on organic matter availability and the yield of tomato plants cultivated on mangrove forest soil. Methods: The research employed a Completely Randomized Design (CRD) in factorial pattern involving two primary factors. Results: Indicate that applying humic acid (1,124 g) and gypsum (18,75 g) can significantly influence the growth, productivity, and nitrogen uptake in tomato plants. Furthermore, the combination treatments of H3G3 (humic acid 0,124 g and gypsum 18,75 g) and H3G4 (humic acid 0,124 g and gypsum 25 g) yielded the highest number of tomato fruits, at 14.33 fruits. Additionally, the highest Vitamin C content (37,84 %) was detected in tomato fruits from the 0,124 g humic acid treatment. Conclusions: The combination of humic acid and gypsum significantly improves mangrove soil conditions by reducing salinity and increasing essential macronutriens like nitrogen and phosphorus. This synergy enhances nutrient retention and uptake, while gypsum supplies calcium and sulfur to correct acidic of saline soils. As a result, it creates a more fertile environment that supports healthy tomato growth and improves both yield quality and quantity.
Pengaruh Variasi Ketinggian Raised Bed terhadap Perubahan Sifat Fisik dan Kimia Tanah di Jemur Wonosari, Surabaya Chosa Zahro Fatiha; Wanti Mindari; Purnomo Edi Sasongko; Rahayu Anggraini; Fifi Aurafika Dewi; Iqbal Satria Pradana
Plumula : Berkala Ilmiah Agroteknologi Vol. 14 No. 1: Januari 2026
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/plumula.v14i1.275

Abstract

Sistem tanam raised bed beralaskan limbah organik diduga berdampak terhadap kecukupan air, nutrisi, dan gas-gas tanah. Tujuan penelitian untuk mengkaji pengaruh variasi ketinggian raised bed terhadap perubahan sifat fisik dan kimia tanah terpilih. Penelitian dilaksanakan pada bulan Juni hingga Agustus 2025 di Jemur Wonosari, Surabaya. Rancangan Acak Kelompok digunakan untuk mengevaluasi  perlakuan  ketinggian raised bed : 20 cm (P1), 25 cm (P2), dan 30 cm (P3), masing-masing diulang tiga kali. Sampel tanah diambil pada kedalaman 0-20 cm pada setiap raised bed untuk dianalisis nilai pH tanah, EC, dan C-organik tanah. Hasil penelitian menunjukkan bahwa ketinggian raised bed mempengaruhi nilai ciri tanah tersebut. Nilai pH tanah berada pada kisaran 7,08–7,63, nilai EC tanah antara 0,594 dS/m dan 0,402 dS/m, dan kandungan C organik antara 1,09% dan 0,6%. Kandungan C organik berbanding terbalik dengan EC tanah. Bedengan yang ditinggikan optimal pada ketinggian 25 cm karena dapat menjaga kelembapan, aerasi, dan mendukung dekomposisi bahan organik yang baik.
Humic Acid and Nitrogen Fertilizer Effects on Nitrogen Availability and Bacterial Population in Sipramin-Affected Paddy Soil Melinda Trisya Yulianto; Wanti Mindari; Rossyda Priyadarshini; Dzarifah Zulperi; M. Ghufron Chakim
Acta Solum Vol. 4 No. 3 (2026): July 2026
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v4i3.3590

Abstract

The accumulation of sodium (Na) due to the continuous use of sipramin reduces the physical, chemical, and biological quality of soil, thereby affecting nitrogen (N) availability and microbial activity. This study aimed to evaluate the combined effect of humic acid and different nitrogen fertilizer sources on nitrogen availability (NH₄+ and NO₃-) and bacterial population dynamics in sipramin-affected paddy soil. The experiment was conducted under greenhouse conditions using a completely randomized factorial design with two factors: humic acid doses (0, 20, 40, and 60 kg ha-¹) and nitrogen fertilizer sources (NPK Phonska, urea, KNO₃, and MAP) at an equivalent rate of 92 kg N ha-¹. Observations included NH₄+, NO₃-, and total bacterial populations, and data were analyzed using analysis of variance (ANOVA). The results showed that the interaction between humic acid and nitrogen fertilizer did not significantly affect nitrogen availability. However, both factors individually showed significant effects on NO₃- availability, indicating their role in influencing nitrogen dynamics. Bacterial populations increased from 7 to 21 Day After Treatment (DAT) and decreased at 42 DAT, reflecting temporal microbial dynamics during incubation. Although changes in bacterial populations coincided with variations in nitrogen forms, this relationship could not be directly confirmed due to the limitation of total culturable bacteria analysis. These findings highlight the importance of humic acid and nitrogen fertilizer management in regulating nitrogen dynamics under high-Na soil conditions, while further studies on specific microbial groups are needed to better understand the underlying mechanisms.
Co-Authors . Maroeto . Syekhfani . Syekhfani A, Argananta Sakha Aditya, Haidar Fari Ahmad Mustapha Mohamad Pazi Andahrino, Berliana Putri Angga Handika Putra Augustien, Nora Badriyatul Bahiro Bakti Wisnu Widjajani Bakti Wisnu Widjayani Cahyo, Zumatul Atiko Islamya Cholid Fadil Chosa Zahro Fatiha Daljit Singh Karam Diqy Ridwan Aditama Dzarifah Zulperi Faisal Muadun Faisal Farichah Isnaini Fifi Aurafika Dewi Fitri Wijayanti Fitri Wijayanti Guntoro, Wuwut Hadi Suhardjono Haidar Fari Aditya Hamidah, Nilna Murobbiyah HAMMADA HIDAYATURRACHMAN Harya, Gyska Indah Ika Nur Fitriana Iqbal Satria Pradana Ir, MT., Siswanto Iwan Kresna Setiadi Jayanti, Fara Amilia M. Ghufron Chakim Mahendra Kusuma, Ramadhani Mahesa Fahmi Husein Maroeto Maroeto Maroeto Maroeto Maroeto, ' Maroeto, . Melinda Trisya Yulianto Melinda Trisya Yulianto Moch. Arifin Moch. Arifin Muhammad Dzikrullah Muhammad Dzikrullah MUHAMMAD RIZKY ROMADHON Nabila Putri Wiandari Nanda Ajeng Kartika Novita Risti Azahra Novita Risti Azahra Nur Supriyadi, Yudi Oentari Prilaningrum Sutanto Penta SURYAMINARSIH Permatasari, Fina Dwi Pratama, Arista Priyadarshini, Rossyda Puji Lestari Tarigan Purnomo Edi Sasongko Purwadi MP. Ir Purwadi Purwadi Qonita Mumtazia Kamilah Rahayu Anggraini RAMADHANI MAHENDRA KUSUMA Ramadhani, Mirza Riski, Aqilla Wulan Rossyda Priyadarshini Rudini Berbudi Rusyla Dwi Rahayu Rusyla Dwi Rahayu Rusyla Dwi Rahayu S Siswanto Sabrila Nanda Kharisma Putri Sasongko, Edi Purnomo Seca Gandaseca Setyo Budi Santoso Setyo Budi Santoso Setyo Budi Santoso Setyo Budi Santoso Setyo Budi Santoso Siram Solecha, Maratus Siswanto Siswanto Siswanto Siswanto Siswanto Siswanto Siswanto Siswanto Siswanto Soekamto, Muhammad Bagus Bima Sousa , David Sri Wiyatiningsih Suwandi, ' Syekhfani, . Widiwurjani Windriyanti, Wiwin Wuwut Guntoro Zaenal Kusuma Zaenal Kusuma