Article Per Year (5 Year)
p-Index From 2020 - 2025
0.947
P-Index
This Author published in this journals
All Journal Journal of Degraded and Mining Lands Management Indonesian Journal of Applied Research (IJAR) Prima Abdika: Jurnal Pengabdian Masyarakat JAPI: Jurnal Akses Pengabdian Indonesia Acta Solum
Wilujeng, Retno
Unknown Affiliation
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

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
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.
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

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.
Co-Authors DIMAS ANDRIANTO Eko Rini Indrayatie Eva Harlina Hariadi Darmawan, Hariadi Madyastuti, Rini Noorvy, Dian Nurhidayati Nurhidayati Sadiyah, Ana Arifatus Saputra, Rafael Leo Widowati widowati widowati