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In engineering practice, various methods have been implemented to stabilize landslide-prone slopes, one of which is the use of bore piles. Bore piles are structures that hold back soil and make slopes more stable by reinforcing the ground inside them. However, the application of bore piles in landslide mitigation presents its own challenges, making it essential to identify and anticipate potential issues that may arise in field engineering practice. Bore piles are installed vertically, either parallel or staggered, at specific spacing and are often combined with capping beams and struts to resist soil movement and provide lateral restraint. This method is commonly applied to high-risk slopes or critical infrastructures such as roads, bridges, and buildings. Anticipation strategies in engineering practice consist of three stages: planning, implementation, and long-term maintenance, with this study focusing specifically on anticipation strategies during the implementation stage. Although bore piles serve as an effective solution to reduce landslide risk, their success depends heavily on proper planning, construction execution, and maintenance. Issues such as soil conditions, construction quality, and external factors must be addressed through a comprehensive engineering approach.

This study aims to analyze the process of processing fruit peel waste from juice traders into eco-enzymes as an effort to reduce environmental pollution. The research uses qualitative descriptive methods through direct observation, documentation, and literature studies. Fruit peel waste is fermented at a ratio of 1:3:10 (molasses : fruit waste : water) for three months under anaerobic conditions. The fermentation results show good eco-enzyme characteristics, characterized by a pH of 3, a fresh sour aroma, and a brownish color as an indicator of fermentation success. These findings show that the process of processing eco-enzymes from fruit peel waste can be done simply, cheaply, and environmentally friendly. In addition, the use of eco-enzymes has the potential to reduce the volume of organic waste disposed of in landfills and reduce water and soil pollution. The resulting eco-enzyme also has potential applications as natural cleaners, liquid fertilizers, and odor controllers. Thus, the treatment of fruit peel waste not only supports sustainable environmental management practices, but also encourages the implementation of the circular economy as well as community empowerment ecologically and economically.

Sorghum (Sorghum bicolor L.) is an annual crop that is tolerant to drought and requires relatively low water input, making it suitable for cultivation on suboptimal lands such as peat soils. However, the utilization of peat soils for crop production faces major constraints, including high soil acidity and low availability of essential macronutrients, particularly nitrogen (N), phosphorus (P), and potassium (K). Improving the chemical properties of peat soils can be achieved through the application of dolomite to reduce soil acidity and NPK fertilizer to enhance nutrient availability. This study aimed to evaluate the growth and yield responses of sorghum to different combinations of dolomite and NPK fertilizer rates on peat soil and to determine the most efficient dosage. The experiment was conducted using a factorial randomized block design with two factors, namely dolomite rate and NPK fertilizer rate. Observations were made on growth and yield parameters of sorghum. The results showed that the interaction between dolomite and NPK fertilizer had no significant effect on all observed parameters. Based on efficiency analysis, the application of 1.16 kg dolomite per bed and 200 kg NPK per hectare was identified as the most efficient dosage to support the growth and yield of sorghum on peat soil. These findings indicate that appropriate soil amendment and fertilization management are essential for optimizing sorghum production on peat soils.

Soil contamination by hydrocarbons, pesticides, heavy metals, and complex pollutants is rapidly increasing and degrading essential ecosystem functions. Physical or chemical treatments offer faster results, yet they are often costly, energy-intensive, and risk disrupting soil biological integrity without fully eliminating pollution sources. Microorganism-based bioremediation provides a more sustainable alternative by utilizing microbial metabolism to degrade or immobilize pollutants into less toxic and less mobile forms. This article presents a structured literature review on the roles and applications of microorganisms for bioremediation of contaminated soils, covering comparisons between single isolates and microbial consortia, dominant biological mechanisms, and ecological challenges in field application. A Systematic Literature Review approach was applied, using narrative synthesis and thematic clustering of national and international journals published between 2020 and 2025. The review indicates that single microbial isolates are commonly selected for specific pollutant targets, whereas microbial consortia are preferred for mixed or persistent contaminants due to metabolic synergy that enhances microbial adaptability and stepwise pollutant breakdown in highly polluted soils. Adaptive mechanisms such as EPS production and biofilm formation contribute to microbial resilience under stress and help retain contaminants within the soil matrix. Key challenges identified include inoculum stability under extreme conditions and limited microbial access to pollutants trapped in micro-soil pores. The findings highlight that microbial selection strategies must be tailored to pollutant characteristics and soil environmental conditions, while also emphasizing the potential of biofilm-based systems and organic carriers to support broader field implementation of microbial bioremediation.

Expansive clay soil is soil that can expand and contract significantly in response to changes in soil moisture content. This study used an experimental method to stabilize expansive clay soil using a mixture of gypsum waste powder, which was tested using the Atterberg test, the Unconfined Compression Strength test, and the California Bearing Ratio test with mixture variations of 0%, 10%, 20%, and 30%. The results showed that the addition of gypsum waste powder could reduce the expansivity level of the soil from a very high level of 42% to a moderate level of 20%, increase the value in the Unconfined test at a maximum mixture of 10%, and increase the value in the CBR test at a maximum mixture of 30%. Based on the above description, this study aims to determine the extent of the effect of gypsum waste powder on expansive clay soil on the bearing capacity and compressive strength of expansive clay soil.  

Biodiversity is essentially a reflection of the number of species and individuals inhabiting a community, as seen in the Pteridophyta group. These plants, which have evolved to have differentiated roots, stems, and leaves, play an important role in forest systems, primarily as protectors of the soil surface from the effects of erosion, in addition to contributing to the decomposition of organic matter that produces nutrients, and being a major part of the producer chain in the trophic structure. The Jaboi hot spring area, located in the Sukajaya District of Sabang City, exhibits unique ecological characteristics, influenced by the presence of the Jaboi volcano, which gives rise to geothermal phenomena such as fumarole activity, hot steam emissions, and the emergence of high-temperature water flows. This geothermal dynamic directly causes alterations in the physical and chemical conditions of the local soil, thereby shaping habitat characteristics and influencing the existence of vegetation, including ferns. To date, there is little scientific information available on the diversity of ferns in this area. Therefore, this study was conducted to examine and measure the diversity of ferns in the Jaboi hot spring area. The study was conducted in October 2025 using an exploratory survey approach to determine plots and purposive sampling techniques for field data collection. Diversity analysis was based on the Shannon-Wiener index (Ĥ) formula. Based on the identification results, 15 species of ferns from a total of 6 families and 433 individuals were found. The diversity index obtained (Ĥ=2.490171) indicates a moderate level.

This study aims to analyze the level of flood hazard in Baturaja Barat District, Ogan Komering Ulu Regency, by applying a spatial approach using Geographic Information Systems (GIS) through the overlay method. The analysis was carried out by integrating six main physical parameters, namely rainfall, land use, elevation, slope, river density, and soil type. Each parameter was assigned a score and weight according to its influence on flood potential and subsequently processed spatially to produce a flood hazard map. The results indicate that the Baturaja Barat District area is classified into three hazard levels: low (3.25%), moderate (70.64%), and high (25.84%). Areas with high hazard levels are predominantly characterized by densely populated settlements situated at low elevations and in close proximity to river networks, particularly in Tanjung Karang, Air Gading, Talang Jawa, Karang Agung, and surrounding villages. These findings highlight that land-use changes, topographic conditions, and the distribution of river networks play significant roles in increasing flood risk. The results of this study are expected to serve as a foundation for spatial planning, the strengthening of disaster mitigation policies, and the enhancement of community preparedness against flood hazards in the region.

Panorama Sileme-Leme is a tourist destination in Humbang Hasundutan Regency, specifically in Huta Sileme-Leme, Parsingguran 2 Village, Pollung District, located at an altitude of approximately 1,600 meters above sea level. The beautiful natural panorama with Lake Toba as its backdrop and surrounded by expansive plantations makes it an ideal recreational spot. However, the supporting facilities in this area are insufficient to accommodate various recreational activities that could potentially be conducted there. Therefore, landscape planning and the provision of tourist facilities are necessary to make the area more attractive to visitors. The initial idea behind this concept is to plan the Sileme-leme Panorama area as an attractive tourism destination equipped with various supporting facilities for tourism activities. However, because it is located in a hilly area prone to landslides, the concept of a pine forest tourism area was implemented. In addition to enhancing aesthetics and visitor comfort, its primary function is to minimize landslides because pine trees are known as effective soil-stabilizing vegetation. In addition, the pine forest tourism landscape can also have interesting spots such as tall, shady pine trees, restaurants or cafes with views of the pine forest,  and also play areas for children. This helps enhance the visitor's tourism experience and makes them feel close to nature and the beauty of the pine forest. The planning of the Sileme-leme Panorama Area uses a semi-pine forest concept supplemented with various tourism facilities. The implementation of this concept has been considered through various analyses conducted previously. With the implementation of the semi-pine forest concept, it is hoped that the natural potential will not change significantly, and the preservation of nature in this area will remain intact. This planning is expected to make Panorama Sileme-leme a more developed tourist attraction and more appealing to visitors. Additionally, this planning is anticipated to boost the local community's economy.

This research proposes an alternative model for predicting the plasticity potential of clay soils, updating the previous model developed by Firincioglu and H. Bilsel. The alternative lies in the use of the fine fraction content (FC) as the predictive variable, replacing the percentage of sand fraction content (SC) previously suggested. The analysis was conducted on 61 low-plasticity clay (CL) soil samples, classified using the Casagrande and Moreno-Maroto systems, by examining the relationship between consistency limits (LL, PI), grain fractions (sand, silt, clay), and related parameters (FC, sand-silt-clay spectrum, and sand fraction ratio). The correlation analysis results show significant findings, including a strong positive correlation between sand content and the sand ratio (SR), as well as a negative correlation between sand content and FC, and between FC and SR. The performance of the substitute Casagrande quadratic model [2] reveals the best predictive accuracy among the proposed models ( [1], R² =0.90; [3], R²  0.89; [4], R² =0.43; [5], R² =0.93; [6], R² =0.93; [7], R² =0.89; [8], R² =0.89), with the highest R2 value of 0.93, MSE of ≈4.01, and MAE of ≈1.44–1.47. The equation is .

A steel truss bridge is a structure constructed from a series of interconnected steel bars. The loads received by this structure are analyzed and transferred to the steel bars that make up the structure. Factors that need to be analyzed in bridge construction include the location and surrounding environmental conditions. After identifying the type of soil and bedrock beneath the surface, the materials used must meet strength or durability test standards before the bridge can be operated. The materials used must comply with the Indonesian National Standard (SNI). In addition to the factors mentioned above, the bridge must undergo a feasibility evaluation. Among the various tests used to evaluate bridge strength, one is vibration testing. The vibration test method, when compared to the load test method, shows higher cost efficiency and does not cause damage to the structure.

This study aims to analyze the effectiveness of natural resource management, particularly water and soil, in increasing agricultural production in Sampali Village, Percut Sei Tuan District, Deli Serdang Regency. The research approach used was descriptive qualitative through field observations, in-depth interviews with farmers and village officials, and documentation studies from relevant agencies. The results indicate that the irrigation system in Sampali Village is not operating effectively, characterized by shallowing of canals, damaged irrigation walls, and blockages that cause uneven water distribution. This condition has a significant impact on crop yields, with a difference in production between upstream and downstream areas reaching 1.9 tons/ha. Furthermore, soil quality has also declined due to the excessive use of chemical fertilizers, as indicated by a soil pH that tends to be acidic (5.4–6.0), low organic matter content (1.2–1.8%), and decreased soil biological activity. Factors influencing the effectiveness of water and soil management include technical, environmental, socio-economic, and institutional aspects. This study concludes that natural resource management in Sampali Village is still suboptimal, necessitating improvements to irrigation infrastructure, increased use of organic fertilizers, and institutional strengthening and farmer mentoring. These efforts are expected to support sustainable agricultural productivity gains.  

The background of this study is the practice of open defecation (OD), which is a public health problem. OD refers to the act of disposing of feces in open areas such as rice fields, fields, bushes, rivers, and beaches, which can pollute the environment, soil, air, and water. This study aims to determine the knowledge, attitudes, and practices of the community in RT 05 Haya Village, Tehoru District, Central Maluku Regency regarding stopping ODD. This study used a descriptive method, with a sample of 40 families selected through a random sampling technique. Data were collected using a questionnaire. The results showed that most people had quite good knowledge about ODD, with 50% of respondents in the quite good category. Community attitudes were also quite good, with 70% of respondents showing a positive attitude towards stopping ODD. However, community actions were still less good, with 42.5% of respondents showing less good actions regarding ODD. The conclusion of this study is that although the knowledge and attitudes of the community in Haya Village were quite good, their actions were still lacking. Therefore, cooperation is needed between the village government, Tehoru Health Center, and community leaders to regularly hold outreach regarding BABS.

This research is entitled "Simulation of Cropping Patterns (Agroforestry with Horticulture) to Increase Land Productivity with Permaculture System", which aims to develop an effective simulation method for designing cropping patterns in increasing permaculture land productivity and providing simulation results and their practical application in land design. This research was conducted from March to July 2024, located at Jalan Magelang Km 5.6, Kutu Tegal, Sinduadi, Mlati, Sleman, Special Region of Yogyakarta 55284. The simulation of cropping patterns was carried out using the SketchUp computational model and Andrew Marsh Simulation, and was evaluated based on aspects of the utilization of sunlight and plant growing space. Through this simulation method, the optimal combination of plants in the permaculture system was found. The simulation results were then analyzed and evaluated in the field to assess their success in increasing land productivity. Each cropping pattern shows unique characteristics in utilizing sunlight, growing space, and soil nutrients optimally, thus supporting more sustainable and productive land management.

The early growth of Coffea arabica seedlings is highly influenced by the quality of the growing medium and nutrient uptake efficiency during the nursery phase. This study aimed to evaluate the effect of local-material-based growing media formulations and arbuscular mycorrhizal fungi (AMF) inoculation on the vegetative growth of C. arabica Lini S 795 seedlings. The experiment was conducted using a completely randomized design (CRD) with eight treatments involving combinations of soil, rice husk, fermented manure, and Glomus sp. mycorrhiza, each replicated three times. Observed parameters included plant height, leaf number, root length, root dry weight, and shoot dry weight. Results showed that the combination of soil, rice husk, manure, and mycorrhiza significantly enhanced all growth parameters compared to the control. The synergistic interaction between local organic components and biological agents improved the physical, chemical, and biological properties of the growing media, thereby optimizing root and shoot development. These findings suggest that integrating locally available organic materials with mycorrhizal inoculants offers an effective, eco-friendly, and sustainable approach to coffee seedling cultivation, with high potential for broader field-scale application.

The 2023 forest fire on Mount Arjuno burned more than 3,315 hectares of land, threatening biodiversity and damaging the balance of the local ecosystem, including the loss of large trees and a decline in soil quality. In response to these conditions, the 80 Gunung Arjuno 3339 Mdpl Expedition was initiated as a form of community service aimed at restoring the ecosystem through tree planting along the Sumber Brantas–Cangar hiking trail. This activity involved collaboration between the Forestry Service, the Naval Academy, the Indonesian National Armed Forces, the community, students, and volunteers. The implementation method included preliminary studies, procurement of local tree seedlings such as mountain pine and eucalyptus, structured planting along the hiking trail from post 2 to post 3, and post-planting monitoring by Tahura Raden Suryo. A total of ±300 participants planted around 600 trees in this expedition. In addition to planting, participants also carried out mountain clean-up activities. The results of the activities show that tree planting can reduce the risk of erosion and improve soil structure after fires, as well as encourage community involvement in sustainable environmental conservation. This activity proves the importance of cross-sector synergy for effective and sustainable environmental restoration.

This study explores the intersection of Artificial Intelligence (AI), agriculture, and decolonial philosophy, emphasizing the role of local knowledge as the foundation for sustainable agricultural technology in Indonesia. The research investigates how AI can be developed not as a tool of technological domination but as a dialogical partner that recognizes the epistemic value of indigenous wisdom. Using a mixed-method approach, the study combines algorithmic experiments applying lightweight Convolutional Neural Networks (CNN) with Explainable AI (XAI) methods such as SHAP and LIME with participatory interviews involving farmers in Bima District. Empirical findings show that models integrated with localized visualization and community-based interpretability improved user trust by 84% and reduced computational energy by 28% without compromising accuracy. More importantly, the interaction between AI and farmers revealed a form of epistemic integration where algorithmic logic aligns with traditional indicators, such as soil texture, humidity, and seasonal signs known to local farmers. Philosophically, this research asserts that sustainable AI should emerge from ecological and cultural contexts rather than imposing external frameworks. In the decolonial sense, it positions local farmers not as passive users but as active epistemic agents shaping the meaning of technology. Thus, AI becomes not only a technical instrument but a site of ethical and epistemic liberation that reaffirms human responsibility toward knowledge, culture, and the earth.

Arbuscular Mycorrhizal Fungi (AMF) are biological agents that play an important role in increasing the efficiency of nutrient uptake and plant tolerance to abiotic stress, especially in acidic soils such as ultisols. This study aims to analyze the growth and yield responses of chili (Capsicum annuum L.) to the combination of NPK fertilizer doses and AMF inoculation. The study was conducted in Sungai Talang, Gadut, Agam Regency, from June to October 2025 using a Factorial Completely Randomized Design with two factors, namely AMF inoculation (without AMF, Glomus sp., and Rhizophagus sp.) and NPK fertilizer doses (100%, 75%, 50%, and 25% of the recommendation). The results showed a significant interaction between AMF inoculation and NPK doses on plant height, dry weight, flowering time, and fruit yield per plant. Glomus sp. inoculation with a 50% NPK fertilizer dose resulted in the highest growth and yield, equivalent to the 100% NPK treatment without AMF. The integration of AMF with a 50% reduction in NPK dosage has been shown to maintain crop productivity. This strategy can serve as a basis for developing a sustainable agricultural system based on nutrient efficiency and soil microbial balance.

The soil in Kedungdandang Hamlet, Muncar, has previously been identified as expansive clay that is highly sensitive to changes in moisture content and exhibits significant shrink–swell behavior, which leads to a reduction in bearing capacity and structural damage such as cracking in floors and walls, therefore, soil improvement through stabilization is required. This study aims to determine the effect of adding cement and rice husk ash (RHA) on the mechanical properties of expansive clay soil by using 3% cement and 6%, 8%, and 10% rice husk ash based on the weight of the soil. The results of the unconfined compressive strength (UCT) test indicate that the natural soil has a qu value of 28.62 kN/m², which increases to 55.08 kN/m² with the addition of 3% cement and 6% RHA, to 62.66 kN/m² with 3% cement and 8% RHA, and reaches the highest value of 86.98 kN/m² for the mixture containing 3% cement and 10% RHA. This increase in qu value indicates that the stabilization process improves the mechanical properties of the soil through a pozzolanic reaction, resulting in a more stable soil structure and a higher bearing capacity.

This research was conducted to systematically examine scientific evidence regarding the mechanisms and synergistic impacts of PGPR and intercropping on Water Use Efficiency (WUE) and Nutrient Use Efficiency (NUE) in drylands. The method used was a systematic literature study with a search for peer-reviewed articles and strict selection of research evaluating WUE and NUE parameters in intercropped crops and crops inoculated with PGPR. The results showed that intercropping systems can increase soil water retention, improve microclimate conditions, and optimize the utilization of space and nutrients between plant species. PGPR contributes to improving plant growth through nitrogen fixation mechanisms, phosphate dissolution, phytohormone production, and strengthening tolerance to drought stress. The synergy between these two approaches enhances the plant's ability to utilize water and nutrients more efficiently, thereby implying an increase in productivity and sustainability of dryland agricultural systems. These findings emphasize the need for verification through field trials, development of adaptive local PGPR isolates, and institutional and policy support to expand the application of this technology to drylands.

This community service program was conducted in Manarap Baru Village, Banjar Regency, South Kalimantan, focusing on the utilization of rice husks as a planting medium to promote creative economic development. The background of this initiative stems from the local soil conditions, which are predominantly fill soil and swamp, making it less suitable for plant cultivation. Additionally, the community—especially housewives—faces limited knowledge and resources in processing agricultural waste into economically valuable products. The implementation methods included preliminary surveys, socialization, educational outreach, hands-on practice, and evaluation. The materials delivered covered the benefits of rice husks as planting media and compost, techniques for converting husks into charcoal, and business opportunities derived from processed husk products.The results of the program showed a significant improvement in participants' understanding of independent planting media and compost production, reduced reliance on commercial products, and the emergence of new business opportunities that support sustainable agriculture.