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Pengaruh Model Pembelajaran Berbasis Masalah (Problem-Based Learning) Terhadap Kemandirian Belajar Siswa Pada Mata Pelajaran Akidah Akhlak (Studi Eksperimen Di Kelas VIII MTs Muhammadiyah Tarogong Garut) Salamudin, Ceceng; Utami, Sri Rahayu
MASAGI : Jurnal Pendidikan Agama Islam Vol 2 No 1 (2023): MASAGI : Jurnal Pendidikan Agama Islam
Publisher : STAI Al-Musaddadiyah Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37968/masagi.v2i1.402

The self-directed learning of students in the Akidah Akhlak subject at MTs Muhammadiyah Tarogong Garut remains a challenge in the educational process. Some students exhibit low self-confidence, lack responsibility, and are overly dependent on others during learning activities. The Problem-Based Learning (PBL) model is an instructional approach that engages students in solving problems through scientific method stages. The objectives of this research are to describe: (1) the level of self-directed learning in students concerning the Akidah Akhlak subject; (2) the implementation of the Problem-Based Learning model in the Akidah Akhlak subject for Grade VIII students at MTs Muhammadiyah Tarogong Garut; and (3) the influence of the Problem-Based Learning model on students' self-directed learning in the Akidah Akhlak subject for Grade VIII students at MTs Muhammadiyah Tarogong Garut. The research employed an experimental method. Data collection techniques included observation, questionnaires, and document analysis. The data were processed using statistical analysis. The study's findings revealed that the average pre-test scores were 52.70 for the experimental group and 52.35 for the control group. After the treatment with the Problem-Based Learning model, the post-test average for the experimental group increased to 62.00, while the control group, which did not use the PBL model, had an average post-test score of 54.87. The T-test results indicated \( T_{calculated} \) > \( T_{table} \), specifically \( -6.59 \) or \( 6.59 > 2.00 \). Therefore, it can be concluded that the Problem-Based Learning model significantly influences the self-directed learning of students in the Akidah Akhlak subject for Grade VIII students at MTs Muhammadiyah Tarogong Garut. Keywords : Problem-Based Learning Model, Student Self-Directed Learning, Akidah Akhlak Subject

PENGARUH APLIKASI BIOGEOTEKSTIL DAN PROBIOTIK TERHADAP RESPIRASI TANAH DAN BIOMASSA MIKROBA DALAM BUDIDAYA KENTANG DI ANDISOL Fajriyah, Azizatul; Utami, Sri Rahayu; Maulidiyah, Nurul; Permatasari, Wulan; Yu-Min, Wang; Suprayogo, Didik
Jurnal Tanah dan Sumberdaya Lahan Vol. 12 No. 1 (2025)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2025.012.1.19

Soil respiration and microbial biomass are key biological indicators for soil fertility, especially in the context of agricultural sustainability. Potatoes (Solanum tuberosum L.) are a high-demand crop; their cropping system often ignores conservation principles, causing land degradation. Applying biogeotextiles and probiotics might be potential solution to reduce erosion and maintain soil fertility. This study aimed to evaluate the impact of biogeotextile and probiotic applications on soil respiration and microbial biomass as indicators of soil health in potato farming in Andisols. Randomized Block Design Factorial was used with biogeotextile application as the first factor and and probiotic as the second factor. Four treatments were applied, i.e., control (no treatment), biogeotextile, probiotic, and a combination of biogeotextile and probiotic. Soil pH, % organic C, % N-total, and soil microbial Carbon were measured in 0, 40, and 80 days after treatment (dat), while soil respiration were observed every week. The results showed that the application of biogeotextiles and probiotics had no significant effect on soil pH, soil organic C, and soil N-Total. Microbial biomass remained stable until 80 dat, however, it tended to increase in the final growth phase, irrespective to the effect of biogeotextile and probiotic applications. Soil respiration showed a fluctuating pattern, with a significant increase on 35 and 42 day after planting. This study emphasizes the need for long-term observations to further understand the impact of biogeotextile and probiotic applications on soil biochemical properties in Andisols.

Peningkatan Self-Regulated Learning Siswa melalui Konseling Ringkas Berfokus Solusi Utami, Sri Rahayu; Saputra, Wahyu Nanda Eka; Suardiman, Siti Partini; Kumara, Agus Ria
Counsellia: Jurnal Bimbingan dan Konseling Vol. 10 No. 1 (2020)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/counsellia.v10i1.4730

Penelitian ini bertujuan mengetahui peningkatan self-regulated learning melalui konseling ringkas berfokus solusi di SMP Muhammadiyah Turi Sleman. Jenis pada penelitian ini adalah eksperimen dengan type one group pretest posttest design. Subjek penelitian ditentukan dengan teknik non probability sampling design menggunakan purposive sampling. Siswa kelas VIII SMP Muhammadiyah Turi Sleman merupakan subjek yang terlibat pada penelitian ini. Hasil penelitian dapat disimpulkan bahwa peningkatan self-regulated learning mengalami perbedaan yang signifikan sebelum dan sesudah diberikan layanan konseling ringkas berfokus solusi.Â Abstract: This study aims to find out the improvement of self-regulated learning through concise counseling focusing solutions in SMP Muhammadiyah Turi Sleman. The type of this research is experiment with type one group pretest posttest design. The research subjects were determined by using a non-probability sampling design using purposive sampling. Class VIII students of SMP Muhammadiyah Turi Sleman were the subjects involved in this study. The results of the study concluded that the increase in self-regulated learning experienced significant differences before and after being given a concise solution-focused counseling service.

Effectiveness of Various Types of Manure and Inorganic Fertilizers on Populations of N-fixing and P-Solubilizing Bacteria and Nutrient Uptake of Maize in Inceptisol Alda Inayah A. Hi. Usman; Reni Ustiatik; Sri Rahayu Utami; Yulia Nuraini
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.880-889

Bacteria are classified as non-symbiotic N-fixing and P-solubilizing play an important role in enhancing soil quality and plant growth. This study aims to analyze various types of manures and inorganic fertilizers on N-fixing and P-solubilizing bacteria population and their relationship with N and P uptake of maize in Inceptisol. The manure used was poultry, goat, and cow manure with doses of 0 t/ha, 10 t/ha, and 20 t/ha, respectively, and inorganic fertilizer NPK Phonska 15-15-15 dose 0 kg/ha; 150 kg/ha (50% of recommendation dose) and 300 kg/ha (100% of recommendation dose). Application of manure (poultry, goat, and cow manure) increased N-fixing and P-solubilizing bacteria population. The application of various types of manure and inorganic fertilizers has a significant impact on N and P uptake. The highest N and P uptake were 29.92 kg/ha and 2.63 kg/ha, respectively. Manure application can reduce inorganic fertilizer dose by up to 50%, increasing plant production efficiency and environmental sustainability. Keywords: Bacteria population, Fertilizer optimization, Inceptisol, Nutrient uptake.

PENGARUH APLIKASI BIOGEOTEKSTIL DAN PROBIOTIK TERHADAP RESPIRASI TANAH DAN BIOMASSA MIKROBA DALAM BUDIDAYA KENTANG DI ANDISOL Fajriyah, Azizatul; Utami, Sri Rahayu; Maulidiyah, Nurul; Permatasari, Wulan; Yu-Min, Wang; Suprayogo, Didik
Jurnal Tanah dan Sumberdaya Lahan Vol. 12 No. 1 (2025)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2025.012.1.19

Soil respiration and microbial biomass are key biological indicators for soil fertility, especially in the context of agricultural sustainability. Potatoes (Solanum tuberosum L.) are a high-demand crop; their cropping system often ignores conservation principles, causing land degradation. Applying biogeotextiles and probiotics might be potential solution to reduce erosion and maintain soil fertility. This study aimed to evaluate the impact of biogeotextile and probiotic applications on soil respiration and microbial biomass as indicators of soil health in potato farming in Andisols. Randomized Block Design Factorial was used with biogeotextile application as the first factor and and probiotic as the second factor. Four treatments were applied, i.e., control (no treatment), biogeotextile, probiotic, and a combination of biogeotextile and probiotic. Soil pH, % organic C, % N-total, and soil microbial Carbon were measured in 0, 40, and 80 days after treatment (dat), while soil respiration were observed every week. The results showed that the application of biogeotextiles and probiotics had no significant effect on soil pH, soil organic C, and soil N-Total. Microbial biomass remained stable until 80 dat, however, it tended to increase in the final growth phase, irrespective to the effect of biogeotextile and probiotic applications. Soil respiration showed a fluctuating pattern, with a significant increase on 35 and 42 day after planting. This study emphasizes the need for long-term observations to further understand the impact of biogeotextile and probiotic applications on soil biochemical properties in Andisols.

Temporarily degraded physical properties of pyroclastic materials from Mount Semeru: Can they be improved after reclamation with vegetation and indigenous microbes? Albarki, Georona Kusma; Sizilia, Vannya Julia; Kurniawan, Syahrul; Kusuma, Zaenal; Utami, Sri Rahayu
Journal of Degraded and Mining Lands Management Vol. 12 No. 5 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.125.8865

The eruption of Mount Semeru in East Java released pyroclastic materials that damaged agroecosystems and degraded the soil physical properties. Pyroclastic materials tend to form surface crusts, leading to compaction and decreased permeability, which hinders soil recovery. To accelerate rehabilitation, adaptive vegetation and indigenous microbes were introduced to improve the physical properties of pyroclastic materials. This study aimed to assess the incorporation of indigenous microbes and adaptive vegetation in improving soil quality after an eruption. This study employed a factorial randomized complete block design with two factors: vegetation type, i.e., Napier grass (Vn), Centrosema sp. (Vc), and Indigofera sp. (Vi); and microbial application, i.e., without microbes (M0) and with indigenous microbes (M1). Soil bulk density, total porosity, permeability, available water content, and evapotranspiration were measured. The data were analyzed using ANOVA and LSD at 5% significance level, followed by regression and correlation analysis. The results showed that incorporating indigenous microbes with adaptive vegetation significantly increased total porosity, permeability, and available water content while decreasing bulk density and evapotranspiration. Specifically, the Napier grass with microbe treatment (VnM1) was most effective in reducing compaction, attributed to its extensive root system and enhanced microbial activity. This treatment improved water retention and provided a sustainable solution for rehabilitating pyroclastic materials, supporting long-term agricultural recovery after the eruption.

Effectiveness of Various Types of Manure and Inorganic Fertilizers on Populations of N-fixing and P-Solubilizing Bacteria and Nutrient Uptake of Maize in Inceptisol Usman, Alda Inayah A. Hi.; Ustiatik, Reni; Utami, Sri Rahayu; Nuraini, Yulia
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.880-889

Bacteria are classified as non-symbiotic N-fixing and P-solubilizing play an important role in enhancing soil quality and plant growth. This study aims to analyze various types of manures and inorganic fertilizers on N-fixing and P-solubilizing bacteria population and their relationship with N and P uptake of maize in Inceptisol. The manure used was poultry, goat, and cow manure with doses of 0 t/ha, 10 t/ha, and 20 t/ha, respectively, and inorganic fertilizer NPK Phonska 15-15-15 dose 0 kg/ha; 150 kg/ha (50% of recommendation dose) and 300 kg/ha (100% of recommendation dose). Application of manure (poultry, goat, and cow manure) increased N-fixing and P-solubilizing bacteria population. The application of various types of manure and inorganic fertilizers has a significant impact on N and P uptake. The highest N and P uptake were 29.92 kg/ha and 2.63 kg/ha, respectively. Manure application can reduce inorganic fertilizer dose by up to 50%, increasing plant production efficiency and environmental sustainability. Keywords: Bacteria population, Fertilizer optimization, Inceptisol, Nutrient uptake.

Evaluation of Fertilizer Management Approaches in Maintaining Soil Fertility and Plant Nutrient Content in Coffee-Based Agroforestry Systems Kurniawan, Syahrul; Febiona, Silvia; Nugroho, R Muhammad Yusuf Adi Pujo; Utami, Sri Rahayu
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.v14i5.1857-1868

Application proper type and dose of fertilizer will maintain soil fertility and help coffee growing better in the agroforestry system. Mis-management in fertilization compromises soil quality, and therefore it is underscoring the imperative to ascertain proper type and dosage of fertilizer for maintaining soil properties and nutrient storage. The study aims to assess and evaluate the role of fertilizer management in influencing soil properties, nutrient stocks, and leaf nutrient content. The field experiment was conducted in smallholder coffee agroforestry systems East Java – Indonesia. A randomized block design including a control plot in the protected area and nine combinations of fertilizer types (i.e., organic, inorganic, and mixed) and doses (i.e., low, medium, and high), with three replications, was applied to coffee trees in an agroforestry system. This study proves that differences in fertilizer management did not significantly changes soil physical properties (i.e., soil bulk density and total porosity), indicated that changing in soil physical properties occurred in the long time. In addition, the reduced fertilizer dose (the low dose fertilizer application) had comparable soil available P, and higher soil exchangeable K and soil P stock as compared to those in the protected areas. The study revealed that applying low-dose mixed fertilizer management effectively improved soil fertility.

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