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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management Asian Journal of Agriculture ZIRAA'AH MAJALAH ILMIAH PERTANIAN Jurnal Ilmiah Pertanian ( JIPERTA) Indonesian Journal of Applied Research (IJAR) Prima Abdika: Jurnal Pengabdian Masyarakat JAPI: Jurnal Akses Pengabdian Indonesia Acta Solum
Wilujeng, Retno
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Mathematics Nursing Public Health Social Sciences Other

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Improvement of N, P, and K availability of post-brick mining soil to increase maize yield by applying different types of biochar Widowati, Widowati; Wilujeng, Retno; Nurhidayati, Nurhidayati; Indrayatie, Eko Rini
Journal of Degraded and Mining Lands Management Vol. 11 No. 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.112.5319

Abstract

The low fertility of post-brick mining soil may be improved by applying biochar to the soil because biochar is an excellent soil amendment, although its quality varies depending on the raw materials used. Therefore, soil fertility, nutrient availability, and crop yields are affected by the type and amount of biochar added to soils. This study examined the effect of types and dosages of biochar on nitrogen, phosphorus, and potassium availability of post-brick mining soil to increase maize yield. The treatment combinations of biochar dosages (0 t ha-1, 15 t ha-1, 30 t ha-1, and 45 t ha-1) and biochar types (coconut shell, wood, and rice husk biochars) were arranged in randomized block design with three replications. Each treatment plot measuring 4 m x 4.5 m was planted with maize seeds with a planting space of 80 cm x 25 cm. Urea (135 kg N ha-1), SP36 (36 kg P2O5 ha-1), and KCl (110 kg K2O ha-1) were applied as basal fertilizers. The results showed that at eight weeks after biochar application, the amount and type of biochar positively affected maize yield. The application of rice-husk biochar at 30 t ha-1 resulted in the highest maize yield. The application of each type of biochar at 45 t ha-1 yielded the highest increase in the availability of nitrogen, phosphorus, and potassium in the soil.
Molecular Docking of the Bioactive Compound Physalis angulata as an Activator of Superoxide Dismutase 1 Wilujeng, Retno; Harlina, Eva; Purwono, Rini Madyastuti; Andrianto, Dimas
Indonesian Journal of Applied Research (IJAR) Vol. 6 No. 2 (2025): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v6i2.737

Abstract

Physalis angulata was known for its pharmacological potential, including antioxidant activity, yet the specific bioactive compounds responsible for enhancing endogenous antioxidant enzymes, such as superoxide dismutase 1 (SOD 1), remained unclear. This study aimed to identify and evaluate the active compounds of P. angulata as natural SOD 1 activators using an In silico molecular docking approach. Forty-nine ligands derived from the active constituents of P. angulata were screened based on Lipinski’s Rule of Five and ADMET properties. Molecular docking was performed using the SOD 1 protein (PDB ID: 5YTO), and docking validation yielded an RMSD value of 0.005 Å. Among the test ligands, withanolide exhibited the most favorable binding energy (−7.011 kcal/mol) and the lowest inhibition constant (7.0 pM), forming strong interactions with key catalytic residues of the enzyme. These findings indicated that withanolide had promising potential as a natural SOD 1 activator, providing a basis for future antioxidant drug discovery.
Penerapan Model Budidaya Tanaman Untuk Pencegahan Kerusakan Lahan Widowati, Widowati; Sa'diyah, Ana Arifatus; Darmawan, Hariadi; Wilujeng, Retno
JAPI (Jurnal Akses Pengabdian Indonesia) Vol 8, No 2 (2023)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/japi.v8i2.4800

Abstract

Kabupaten Tuban merupakan salah satu wilayah dengan pertumbuhan industri yang sangat pesat, yang terancam keseimbangan ekologisnya di kawasan hulu yang agraris dan forestris dengan kawasan hilir yang industri. Untuk itu, diperlukan upaya peningkatan pengetahuan dan pemahaman masyarakat serta para pemangku kepentingan tentang percontohan penerapan model budidaya tanaman pencegah kerusakan lahan sebagai peningkatan upaya pencegahan kerusakan lahan. Upaya tersebut dilakukan dengan metode pendekatan kegiatan FGD (Focussed Group Discussion) dalam pelaksanaan kegiatan pengabdian masyarakat, untuk percontohan adalah Desa Jetak, Kecamatan Montong, yang berada di sebelah selatan wilayah Kabupaten Tuban sebagai kawasan hulu. Hasil FGD menjustifikasi keadaan dan status degradasi lahan hutan Bongok di lokasi kegiatan yang terkategori kritis dan perlu dinisiasi dengan Aksi Konservasi dan Restorasi Ekosistem di Hutan Bongok. Aksi ini merupakan penerapan metode vegetatif konservasi dan restorasi lahan, dengan tiga langkah aksi pendampingan, yaitu: penerapan model budidaya tanaman di bawah pohon tegakan, penerapan model pertanian terpadu-tanaman kopi-indigofera-ternak kambing termasuk inisiasi alih teknologi dan inovasi berbasis kopi, serta pengembangan usaha pengolahan produk pertanian-peternakan dan usaha pewarna alami. 
Pelatihan Pembuatan Kompos Sampah Organik Rumah Tangga di Kota Malang Saputra, Rafael Leo; Widowati, Widowati; Noorvy, Dian; Wilujeng, Retno
Prima Abdika: Jurnal Pengabdian Masyarakat Vol. 5 No. 1 (2025): Volume 5 Nomor 1 Tahun 2025 (Maret)
Publisher : Program Studi Pendidikan Guru Sekolah Dasar Universitas Flores Ende

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/abdika.v5i1.4964

Abstract

The management of household waste, particularly organic waste, has emerged as a significant issue in RT 04 RW 06, Merjosari Village, Malang City. Over 50% of the total waste generated consists of organic materials. If not properly managed, organic waste can lead to environmental pollution and exacerbate health problems.This community service initiative aims to enhance public awareness and knowledge, especially among the local PKK mothers, regarding the management of organic waste through composting. The methods employed include site surveys, problem identification, coordination with relevant stakeholders, practical training on compost production, and demonstrations on using bioactivators to accelerate the composting process.The anticipated outcomes of this initiative include a reduction in the volume of unmanaged organic waste, improved soil fertility, and a decrease in negative environmental impacts. Through this training, it is hoped that the community will be better equipped to manage organic waste in a more effective and sustainable manner, ultimately fostering a cleaner and healthier environment.
APLIKASI BIOCHAR DAN PUPUK N TERHADAP SIFAT KIMIA TANAH LAHAN KERING DAN PERTUMBUHAN SORGUM Jelita, Fransiska Delafira; Hamzah, Amir; Hapsari, Ricky Indri; Wilujeng, Retno
JTSL (Jurnal Tanah dan Sumberdaya Lahan) Vol. 13 No. 1 (2026)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2026.013.1.17

Abstract

This study aims to determine how the application of rice husk biochar and nitrogen fertilizer (urea), affects the chemical properties of dryland soil and the vegetative growth of sorghum (Sorghum bicolor L. Moench). This study was conducted from September 2024 to March 2025 at the Science Techno Park of Tribhuwana Tunggadewi University in Malang, East Java, using a Factorial Randomized Block Design with two factors: urea doses (0, 100, 150 and 200 kg ha-1) and biochar (0 and 5 tons ha-1) three replications. The parameters observed were pH H2O, total N-P-K, Organic-C, plant height, stem circumference, number of leaves, and leaf length and width. The results showed that the use of rice husk biochar and N fertilizer in dryland significantly interacted only on the parameter of sorghum plant height at 8 WAP. The use of the N3 dose (urea fertilizer dose of 200 kg ha-1) showed the most optimal results, but the N2 treatment (urea fertilizer dose of 150 kg ha-1) can be considered more efficient because the use of a lower dose of N fertilizer (urea) produced results that were not significantly different from the N3 treatment. Treatment B1 (5 t biochar ha-1) showed better results than B0 (no treatment).
Characterization and Classification of Soils under Various Land Use Types in Dalisodo Village, Wagir Sub-District, Malang Regency Wilujeng, Retno; Widowati, Widowati
Acta Solum Vol. 4 No. 1 (2025): November 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.v4i1.3382

Abstract

This study aims to examine the physical and chemical properties of soil, morphology, and soil classification in Dalisodo Village, Wagir District, Malang Regency, and their implications for land management. Observations were conducted at three locations representing different land-use types: Napier grass monoculture, coffee agroforestry, and open grass. Soil morphology was described in the field, while physical and chemical analyses were conducted using standard laboratory methods. The results indicate that the soil is predominantly clay-textured, with a granular to subangular blocky structure, an acidic pH, and a very low to moderate organic carbon content. N, P, and K levels vary from low to moderate, CEC ranges from moderate to high, and base saturation ranges from low to very high. Soil classification reveals a dominance of Inceptisols and Vertisols in Udic soil moisture regimes, with soil profiles characterized by Typic Hapluderts (Point 1), Dystric Eutrudepts (Point 2), and Chromic Hapluderts (Point 3). These findings provide important information for land management, as vertisols require attention to drainage, water retention, and liming to optimize productivity. Inceptisols require organic amendments and soil fertility management to support sustainable agricultural or agroforestry systems. Emphasis on soil classification helps determine appropriate land management strategies, improves fertilizer efficiency, and supports the sustainability of the region’s agricultural ecosystem.
Optimization of biochar and drip irrigation to improve chili yield and soil properties WIDOWATI, WIDOWATI; BIRU, SIRILUS MARIO; AGASTYA, I MADE INDRA; CAHYA, UTIK TRI WULAN; WILUJENG, RETNO
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090211

Abstract

Abstract. Widowati, Biru SM, Agastya IMI, Cahya UTW, Wilujeng R. 2025. Optimization of biochar and drip irrigation to improve chili yield and soil properties. Asian J Agric 9: 442-453. Cayenne pepper (Capsicum frutescens) is an important horticultural crop in Indonesia; however, its yield remains below optimal despite rising demand. This study intends to (i) assess changes in soil bulk density, particle density, and porosity; (ii) evaluate the effects of irrigation techniques and the application of biochar on chili yields; and (iii) identify the best combination for optimizing resource usage and yield. Eight different treatment combinations, each repeated four times, were used in a nested randomized design study conducted in Tunggulwulung Village, Malang. As the primary factor, the treatments included two main irrigation techniques (conventional and drip), which were further subdivided with different rates of biochar application (0%, 2%, 4%, and 6%). There were 160 pots total, with five plants per treatment acting as experimental units. Rice husks that had been pyrolyzed for three to four hours at 600°C were the source of the biochar. According to the results, adding biochar to conventional irrigation increases fruit weight by 125% and yield by about 130%. Drip irrigation with 4% biochar, on the other hand, is the most successful technique and yields much larger improvements, increasing fruit weight by 764% and fruit yield by 324%. Drip irrigation is more effective and yields better results than conventional irrigation, especially when combined with rice husk biochar. Furthermore, soil porosity and water use efficiency are significantly increased when 4% and 6% doses of biochar are added to drip irrigation systems.
INTEGRASI PENGGUNAAN COAL FLY ASH, BIOCHAR DAN SENSOR NPK TERHADAP PERTUMBUHAN VEGETATIF JAGUNG PADA TANAH PASCA GALIAN-C Wilujeng, Retno; Agastya, I Made Indra; Widura, Muhammad Bayu
ZIRAA'AH MAJALAH ILMIAH PERTANIAN Vol 51, No 1 (2026)
Publisher : Pusat Publikasi Jurnal Universitas Islam Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/zmip.v51i1.20739

Abstract

Penelitian ini bertujuan mengevaluasi pengaruh kombinasi coal fly ash (CFA), biochar, dan pupuk organik terhadap sifat kimia tanah pasca Galian-C serta pertumbuhan vegetatif jagung. Penelitian dilaksanakan di Desa Junrejo, Kecamatan Beji, Kota Batu, menggunakan rancangan acak kelompok dengan 7 perlakuan dan 3 ulangan. Parameter yang diamati meliputi sensor tanah dan pertumbuhan vegetatif (tinggi tanaman, lingkar batang, jumlah daun, luas daun) pada 2, 4, 6, dan 8 MST. Hasil penelitian menunjukkan bahwa kombinasi CFA, biochar, dan pupuk organik berpengaruh nyata terhadap tinggi tanaman, luas daun (4 dan 6 MST), serta diameter batang (2–6 MST), namun tidak signifikan terhadap sifat kimia tanah dan jumlah daun. Perlakuan CKK (Coal Fly Ash 20 t/ha+pupuk kotoran kambing 5%) meningkatkan ketersediaan N, P, dan K, sedangkan BPK (Biochar Sabut Kelapa 20 t/ha + pupuk kompos 5%) memberikan pertumbuhan vegetatif terbaik dibanding kontrol.
The Use of Bicomat and Tithonia Compost on Chemical Properties of Post-Mining Group-C Soil After Bok Choy Cultivation Sari, Lidwina Mita; Amnawadi; Maulana, Choky Afrizal; Rendi, Filipus; Kedang, Yoseph Frinadetz Ragan; Wilujeng, Retno; Karamina, Hidayati; Agastya, I Made Indra
Acta Solum Vol. 4 No. 2 (2026): March 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.v4i2.3398

Abstract

In mining areas, improper soil management frequently leads to soil degradation and the depletion or loss of N, P, and K nutrients. Bicomat is known as an effective amendment for improving physical properties in the short term, whereas its effects on chemical properties generally become evident only in the long term. The purpose of this study was to determine the effect of combining Bicomat and Tithonia compost on the chemical properties of Group-C post-mining soil after planting mustard greens. This study was conducted from October to December 2024 at the Science Technopark of Tribhuwana Tunggadewi University, Malang City, at an altitude of approximately 450 meters above sea level. The study employed a non-factorial Randomized Block Design (RBD) with 8 treatments and 3 replications. The tested treatments consisted of: KT1 (Non-Mining Soil Control), KT2 (Group-C Mining Soil Control), T1P1B1 (Soil 1, 200 g fertilizer, 10 t ha⁻¹ Bicomat), T1P1B2 (Soil 1, 200 g fertilizer, 20 t ha⁻¹ Bicomat), T1P2B2 (Soil 1, 300 g fertilizer, 20 t ha⁻¹ Bicomat), T2P1B1 (Soil 2, 200 g fertilizer, 10 t ha⁻¹ Bicomat), T2P1B2 (Soil 2, 200 g fertilizer, 20 t ha⁻¹ Bicomat), and T2P2B2 (Soil 2, 300 g fertilizer, 20 t ha⁻¹ Bicomat). The results showed that the combination of Bicomat and compost had a significant effect on improving the chemical properties of the Group-C post-mining soil. The best results for nitrogen, phosphorus, and potassium were obtained from treatment T1P2B2, while treatments T1P1B1 and T2P1B1 yielded the best results for organic C.
Effect of Bicomat and Tithonia Compost on Bok Choi (Brassica rapa L.) Productivity in Two Soil Types Wilujeng, Retno; Apriyanti, Kristin; Subianto, Edwin; Primadona, Primadona; Gunevo, Pilipus; Reku, Efraim Umbu; Jaspis, Yakobus; Cahya, Utik Tri Wulan; Widowati, Widowati
Jurnal Ilmiah Pertanian ( JIPERTA) Vol 8, No 1 (2026): Jurnal Ilmiah Pertanian (JIPERTA), Maret
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jiperta.v8i1.6190

Abstract

The potential of former C-excavation mining land differs significantly from agricultural soil in terms of productivity and nutrient availability. Ecosystem restoration and soil productivity enhancement in marginal lands are necessary to improve crop productivity. This study aims to evaluate the effectiveness of biochar-coated humate (Bicomat) and Tithonia compost fertilizer on the growth and yield of bok choi (Brassica rapa L.) in two different soil types. The research was conducted from October to December 2024 The study employed a Randomized Block Design (RBD) with a non-factorial approach, consisting of three replications and eight treatments Observation of growth parameters included plant height (4 Weeks after transplanting/WAP), root length (4 WAP), number of leaves (1-4 WAP), at the time of harvest wet weight and dry weight were observed. The data that has been obtained from the observation results then will be tested using the analysis of variance (ANOVA) further test of Tuckey HSD with 5% significance. Result showed the addition of Bicomat and Tithonia Compost showed differences in plant height 4 MST, number of leaves 4 MST, fresh -dry weight of bok choi plants. The S2T2B2 (Soil 2 + 300 g Tithonia Compost + Bicomat 20 t/ha) treatments more optimal in increasing plant height 4 MST, number of leaves 4 MST, dry weight of mustard plants on post C-excavation mining land. The S1T1B2 (Soil 1 + 200 g Tithonia Compost + Bicomat 20 t/ha) treatment was optimal in increasing plant height 4 MST, number of leaves 4 MST, dry weight of mustard plants on agricultural land.
Co-Authors Amir Hamzah Amnawadi Apriyanti, Kristin BIRU, SIRILUS MARIO Cahya, Utik Tri Wulan DIMAS ANDRIANTO Eko Rini Indrayatie Eva Harlina Gunevo, Pilipus Hariadi Darmawan, Hariadi Hidayati Karamina I Made Indra Agastya Jaspis, Yakobus Jelita, Fransiska Delafira Kedang, Yoseph Frinadetz Ragan Madyastuti, Rini Maulana, Choky Afrizal Noorvy, Dian Nurhidayati Nurhidayati Primadona Reku, Efraim Umbu Rendi, Filipus Ricky Indri Hapsari Sadiyah, Ana Arifatus Saputra, Rafael Leo Sari, Lidwina Mita Subianto, Edwin widowati widowati Widura, Muhammad Bayu