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All Journal Journal of Degraded and Mining Lands Management Jurnal Pengabdian Magister Pendidikan IPA
Maharani, Marcellia
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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Program Pengabdian Masyarakat: Metode Pembenah Tanah melalui Kombinasi Biochar Abu Sekam dan Bakteri Bacillus sp. di Lahan Sawah Poktan Karya Tani Desa Kertosari Maharani, Marcellia; Pratama, Sandy Yoga; Ardian Isa Fahrezi; Fajriansyah Aulia Firdaus; Afhinka Faza Naulia; Andini Dwi Fitriana; Ulfatul Islamiyah; Isna Khilbasa Mas’ula; Vivi Fitriani; Della Puspita; Adelia Putri Karinda
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 4 (2025): Oktober-Desember 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i4.13525

Abstract

Kertosari Village, Pakusari District, Jember Regency is one of the regions with relatively high rice productivity. One of the farmer groups in the village is Poktan Karya Tani who manages rice fields while also running a side business in the form of the brick industry. Community service activities aim to:increase the capacity of farmers to utilize local waste, a useful product in the form of a biofertilizer combined with biochar such as husk and bacillus sp. Community service consists of a series activities including outreach, training in making biochar, and application biochar. Socialization activities can increase farmers' knowledge regarding the importance of using biological fertilizers in combination with husk ash biochar. Based on the results of the comparison of pretest scores and posttest, there was an increase in farmers' understanding with an average of around 60% - 90%. increased to 100% after socialization was carried out. Potassium levels increased after applying a biological fertilizer combination of husk ash biochar and bacillus sp. Soil potassium levels reached 3.13 me/100g and continued to increase higher after 4 weeks, reaching 6.10 me/100g in the very high category. Fe levels in the soil also decreased from 1.3 ppm to 0.5 ppm.
Analysis of soil quality in various land uses in the Central Rembangan micro-watershed, Indonesia Hermiyanto, Bambang; Budiman, Subhan Arif; Basuki, Basuki; Hafizh, Muhammad; Maharani, Marcellia; Hadi, Syamsul
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10333

Abstract

Land degradation due to land use change threatens soil quality and watershed function in Java, Indonesia. This study aimed to evaluate soil quality across various land-use types in the Central Rembangan micro-watershed, East Java, Indonesia, using the Soil Quality Index (SQI) approach based on Principal Component Analysis (PCA). Soil samples were collected from 18 Land Mapping Units (LMUs). The LMU represents a combination of three types of land use, namely rice fields, plantations, and dryland agriculture. The LMU includes six slope classes, namely 0-3%, 3-8%, 8-15%, 15-25%, 25-40%, and >40%. The PCA analysis identified nine key indicators as the Minimum Data Set (MDS). These indicators include soil porosity, permeability, total nitrogen, exchangeable Mg, C/N ratio, soil pH, particle specific gravity, electrical conductivity (EC), and cation exchange capacity (CEC). The SQI value ranges from 0.50 to 0.77. The SQI value shows a significant difference between land use types at p<0.10. The rice field system has the highest SQI value of 0.68±0.09. The plantation system has an SQI value of 0.61±0.06. The dryland agricultural system has an SQI value of 0.57±0.09. Spatial analysis showed that 60% of micro-watershed areas have good soil quality. The good soil quality areas are located in the upstream part which is dominated by forest and plantations. As many as 40% of micro-watershed areas have moderate soil quality. Soil porosity and soil permeability are major contributors to soil quality in all types of land use.
Co-Authors Adelia Putri Karinda Afhinka Faza Naulia Andini Dwi Fitriana Ardian Isa Fahrezi Basuki , Budiman, Subhan Arif Della Puspita Fajriansyah Aulia Firdaus Hermiyanto, Bambang Isna Khilbasa Mas’ula Muhammad Hafizh Pratama, Sandy Yoga Syamsul Hadi Ulfatul Islamiyah Vivi Fitriani