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Hasil Pencarian : 43 record
1. Enhancing soil fertility, inorganic fertilizer efficiency, and oil palm productivity through bio-compost application in oxium biodegradable sacks on former mining land-podzols: Insights from a field study in Indonesia
- Creator : Supriatna, Jajang, Setiawati, Mieke Rochimi, Sudirja, Rija, Suherman, Cucu,
- Content Type : Article
- Publication Name : Journal of the Saudi Society of Agricultural Sciences
- Publication Type : Journal | 2026-01-05
- Abstract : Sandy podzolic soils, prevalent on former mining lands, present significant agricultural challenges due to their coarse texture, depth, acidity, and low fertility. This study evaluated the impact of bio-compost fertilizer, delivered in biodegradable oxium sacks, on soil quality and oil palm productivity in these soils. Conducted over 12 months in a 4-year-old oil palm plantation in East Belitung Regency, Indonesia, the research compared various combinations of bio-compost and inorganic fertilizers with a control group. The findings revealed that the integration of bio-compost with reduced doses of inorganic fertilizers markedly improved soil quality and decreased dependence on chemical inputs. Specifically, applying 50 kg or 75 kg of bio-compost per palm along with 50% or 75% of the standard inorganic fertilizer dose was particularly effective. This approach increased oil palm productivity to 14.50–15.87 tons per hectare per year. The method provides a sustainable solution for the palm oil industry and small farmers, improving soil fertility and productivity in degraded podzolic soils. The use of oxium biodegradable sacks allowed for a gradual release of nutrients. Future research should further explore the potential of bio-compost as a soil conditioner and its long-term environmental impacts across various soil types.
2. Land Cover Changes (2002–2022) Using Landsat Imagery and Pixel-Based Classification: Supporting Coastal Conservation Strategies in Tanjung Mutiara
- Creator : Putra, Aprizon, Faristyawan, Rizky, Triyatno, Triyatno, Putra, Beben Graha, Prasetyo, Agung, Yulius, Yulius, Ameilya, Zhahirah, Arifin, Taslim, Razi, Pakhrur, Triarjunet, Robet,
- Content Type : Chapter ConferencePaper
- Publication Name : Advances in Geoscience and Remote Sensing Technology
- Publication Type : Book | 2026-01-01
- Abstract : This research aims to identify and analyze land cover changes in the coastal area of Tanjung Mutiara during the period 2002 to 2022 using Landsat satellite imagery. The area was selected due to its complex interactions between human activities, environmental changes, and ongoing conservation efforts aimed at preserving the sustainability of coastal ecosystems. The data used includes Landsat 7 ETM+ (2002 and 2012) and Landsat 8 OLI/TIRS (2022) imagery, analyzed using the Maximum Likelihood Classification (MLC) method. The data processing involved radiometric and geometric corrections to ensure accurate results. The findings reveal significant land cover changes over the past two decades, with a substantial expansion of plantation areas and a decline in forest and open land. The analysis identified a shift in land use patterns from open land and forests to plantations, reflecting development pressures and economic demand in the coastal region. The observed land cover changes provide crucial insights for decision-making in sustainable coastal management, supporting conservation efforts, and mitigating the impacts of climate change. In conclusion, this study contributes to a deeper understanding of land cover dynamics in coastal areas and offers practical recommendations for sustainable natural resource management in the coastal area of Tanjung Mutiara.
3. Road to Territorial Politics Through Special Law of Yogyakarta Number 13 of 2012
- Creator : Satriani, Septi,
- Content Type : Chapter ConferencePaper
- Publication Name : Managing Disruption and Developing Resilience for a Better Southeast Asia
- Publication Type : Book | 2026-01-01
- Abstract : The five privileges of authority have been regulated under Specialty Law of Yogyakarta Number 13 of 2012 (UUK) in order to fulfill governor positions, land, culture, institutions, and spatial planning affairs. Particularly in regard to fulfilling the Governor position, this law guarantees that Sri Sultan Hamenku Buwono (HB) X reigning and serving as the king to automatically become the Governor of DIY. Therefore, he does not need to consider about how to reach his power over the next 5 years alike governors in other regions in Indonesia. Moreover, this law does not stipulate restrictions on the governor's position limited to only 2 periods. This paper argues that the UUK paved the way for Sri Sultan HB X to control his territory. He organizes, distributes his power, and implements the policy of arranging the sultanate's land in contrast with the basic agrarian law to return the ‘lost’ land belonging to the sultanate upon the implementation of the Basic Agrarian Law. Sri Sultan HB X stipulated a policy of withdrawing and amending the status of village land certificates which was not only perceived as a form of exclusion and restriction but also as part of regional control as well as economic accumulation. He further utilized the historical social support as a justification for amending village treasury land certificates from state land to sultanate lands. In implementing this policy, he implemented the privileged institutions with a different nomenclature from other regions in Indonesia. Thus, such various policies are considered as the forms of his strategy to defend territory. This paper was accomplished through field research conducted from January 2020 to December 2021 in DIY with qualitative methods. The data was obtained through in-depth interviews with competent sources related to the issue of Yogyakarta Special Law Number 13 of 2012 as primary data along with secondary data sources.
4. Spatial transformation and toponomastic dynamics in Indonesia’s Nusantara capital: an anthropolinguistic inquiry into culture, history, and geographic characteristics
- Creator : Istiqomah, Erma Wahyu, Sumadio, Widyawati, Ramdhan, Muhammad, Yulius, Yulius, Putra, Aprizon, Salim, Hadiwijaya L, Jusuf, Rubini, Dahlan, Dahri, Erikha, Fajar, Max, Jonathan I S D, Yusriansyah, Eka,
- Content Type : Article
- Publication Name : GeoJournal
- Publication Type : Journal | 2025-12-16
- Abstract : Place names (toponyms) are not merely linguistic labels but representations of political, social, and cultural contexts articulated through language and embedded in the landscape. Within this frame, the study focuses on Nusantara Capital City or IKN as a new administrative center whose toponymic practices can preserve national identity while honoring local cultural heritage and mitigating potential conflicts over spatial claims and cultural representation. This study aims to analyze the dynamics of toponymy within the Central Government Core Area or KIPP of IKN Nusantara, while also offering recommendations based on historical, cultural, and geographical factors through an anthropolinguistic approach. The study employs secondary data comprising historical topographic maps (Leiden University–KIT), official IKN development information, and PlanetScope imagery, complemented by Government Regulation No. 2/2021. The analysis applies six interrelated anthropological lenses, namely cultural terminology, naming processes and socio-historical contexts, politeness and etiquette, cultural concepts and worldviews, linguistic form and etymology, and cognitive structures within a qualitative descriptive design. Results show that names such as Sepaku and Pemaluan arise from close human–environment relations and were gradually institutionalized from hydronyms into administrative units through colonial cartography, resource extraction, transmigration, and territorial subdivision. Spatial evidence (2020–2024) illustrates substantial physical transformation in KIPP, while contemporary designations for roads, reservoirs, and housing project narratives of modernity and nationhood yet reveal limited representation of indigenous names. The study concludes that toponymy in KIPP–IKN must be inclusive, ecologically grounded, and regulation-compliant, with meaningful indigenous participation, interdisciplinary verification, and policy integration.
5. The Peripheral Core: Penajam Paser Utara’s Strategic Role and Silent Loss in the IKN Era
- Creator : Nainggolan, Poltak Partogi, Katharina, Riris, Buhaerah, Pihri, Rudiastuti, Aninda Wisaksanti, Apriani, Tini,
- Content Type : Chapter
- Publication Name : Relocating Indonesia’s Capital City
- Publication Type : Book | 2025-01-01
- Abstract : As the ambitious development of Indonesia’s new capital Capital (IKN) continues, Penajam Paser Utara (PPU Penajam Paser Utara (PPU) ) Regency Regency has become one of the most directly affected regions. Two of its districts District —Penajam and Sepaku Sepaku —have been officially integrated into the IKN area IKN area , encompassing a combined landmass of approximately 2,379.73 square kilometres out of the regency Regency ’s total Total 3,333.06 square kilometres. These lands Land , rich in agricultural potential Potential , are primarily used for cultivating oil palm, rubber Rubber , coconut, coffee Coffee , pepper Pepper , and cocoa—the last being a key commodity Commodities in chocolate production.
6. The Scarce Family Composition of Seedlings and Saplings in Different-Aged Secondary Forests
- Creator : Karyati, Karyati, Ipor, Isa B., Karmini, Karmini,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the International Conference of Tropical Agrifood Feed and Fuel 2024 (ICTAFF 2024)
- Publication Type : Book | 2025-01-01
- Abstract : The composition and distribution of seedlings and sapling families play critical roles in forest succession. The aim of this study was to analyze families of seedlings and saplings that are scarce in secondary forests of different ages. A vegetation survey was conducted for all seedlings and saplings with a diameter at breast height (DBH) of less than 5 cm in each one ha plot of 3-, 5-, 10-, and 20-year-old secondary forests in Sarawak, Malaysia. The family scarcity categories were assessed based on the number of individuals, species, and genera. The scarce category of seedling and sapling families was 22 of 38 families in three- and five-year-old secondary forests. While 27 of the 55 families and 28 of the 46 families were in 10 and 20-years-old secondary forests, respectively. In the years secondary forest, there were 3-, 16, and three families were categorized as scarce , very scarce , and extremely scarce families, respectively. The scarce, very scarce, and extremely scarce families of the five-year secondary forests were 4-, 16-, and 2 families, respectively. Of the 27 families categorized, seven were scarce families, 12 were very scarce families, and eight were extremely scarce families in 10 years of secondary forest. In the 20-year-old secondary forest, 3, 3, and 22 families were categorized as scarce, extremely scarce, and very scarce, respectively. Information about scarce plant families in secondary forests of different ages can be considered when selecting plant species for forest management and rehabilitation programs.
7. The Effect of Land Burning on the Presence and Density of Soil Fungi
- Creator : Akhsan, Ni’matuljannah, Firdausi, Noor, Syaifudin, Encik Ahkmad,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the International Conference of Tropical Agrifood Feed and Fuel 2024 (ICTAFF 2024)
- Publication Type : Book | 2025-01-01
- Abstract : Land clearing through cutting and burning is often used as a method of agricultural land management. Still, it has an impact on land ecology, one of which is the impact on soil microorganisms and fungi. This land burning study is a simulation of shifting cultivation. This study aimed to determine the effect of land burning on the types and densities of fungal populations and determine fungi that are adaptive to burning. This study used a descriptive method, namely a description of the types and densities of fungi and the types of fungi that are adaptive to land burning. Soil samples were taken from the land area before and after burning and then analyzed to identify the types and diversity of fungi that were successfully isolated. The results showed that land burning affected the types and densities of fungal populations. Six types of fungi were found before burning and 42 d after burning: Trichoderma sp., Phytium sp., Penicillium sp., Aspergillus sp., Gliocladium sp., and Fusarium sp. The population density of 48-68 × 10 3 CFU/g before burning decreased to 32-57 × 10 3 CFU/g 14 d after burning. The population increased to 28 days after burning, to 49-69 × 10 3 CFU/g. The four types of fungi that are adaptive to burning are Trichoderma sp., Phytium sp., Penicillium sp., and Aspergillus sp.
8. Response of Corn (Zea mays L.) Bisi 321 Variety to the Variation of the Concentration of Nano Fertilizers and Urea Treatments
- Creator : Darma, Suria, Rusdiansyah, Rusdiansyah, Saleh, Muhammad, Sihaloho, Joel Mikhael,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the International Conference of Tropical Agrifood Feed and Fuel 2024 (ICTAFF 2024)
- Publication Type : Book | 2025-01-01
- Abstract : Indonesia is still importing corn to meet its needs. Import volume from January to September 2024 reached 1.38 million tons. Therefore, efforts to increase corn production need to be continued. One effort is planting superior varieties and organic fertilizers with nanotechnology. This study aimed to explore the response of the corn variety Bisi 321 to variation in nano fertilizer concentration, named Paten fertilizer and Paten imun - and Urea fertilizer treatments, using a randomized block design with five treatments and five replications. The maximum nano Paten Fertilizer concentration applied was 0.67 g.L -1 , Paten imun was 1.07 mL.L -1 , and a fixed concentration of urea of 21 g.L -1 . The data were analyzed using Analysis of Variance (ANOVA), followed by Duncan’s multiple range test (DMRT) analysis at the 5% level. The results showed that the treatment of variations in paten fertilizer, paten imun and urea in corn ( Zea mays L.) The Bisi 321 variety had a significant effect on all parameters, except for the number of leaves aged 15 DAP, weight of 100 shelled grains, and grain weight plot. Paten fertilizer, paten imun, and urea concentration changes that tend to produce the optimum development and outcomes in corn plants ( Zea Mays L.) of the Bisi 321 variety, specifically treatment P4 (paten 0.67 g.L -1 , paten imun 1.07 mL.L -1 , urea 21 g.L -1 ).
9. How Does the Local Community Response to Mangrove Patrol Program: a Case Study in Langkat Regency
- Creator : Harefa, Meilinda Suriani, Damanik, Muhammad Ridha Syafii, Putra, Mulhady, Hidayat, Syukri, Rohim, Nur, Irfansyah, Dwi,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 6th International Conference on Social Sciences and Interdisciplinary (ICSSIS 2024)
- Publication Type : Book | 2025-01-01
- Abstract : The Mangrove Patrol Program is a targeted initiative aimed at safeguarding the mangrove ecosystems, particularly in regions with dense mangrove forests, such as the Langkat Regency coastline in North Sumatra Province. This study focuses on four villages within Langkat Regency—Pulau Kampai Village, Pangkalan Siata Village, Salahaji Village, and Halaban Village—that have implemented the Mangrove Patrol Program as part of local conservation efforts. The primary objective of this research is to assess community perceptions and responses toward the mangrove patrol initiative. The method used in this research is a survey approach, data were collected through questionnaires administered to 120 respondents across the four villages. Findings indicate a high level of community awareness and support for the patrol activities and mangrove conservation efforts. This support is evidenced by the substantial percentage of respondents who recognize the effectiveness and necessity of the patrols, accompanied by a willingness to engage actively in environmental monitoring. The findings reveal that while most respondents recognize the importance of mangrove patrols in ensuring forest sustainability, preventing encroachment, and deterring violations—evidenced by high levels of agreement and a strong willingness to participate in environmental monitoring—there remains a subset of individuals uncertain about their role, highlighting the need for enhanced educational initiatives to improve community understanding and involvement in conservation efforts. The study highlights the critical role of local community involvement in environmental protection and provides actionable insights for refining community-based conservation strategies.
10. Selection and Characterization of Lactobacillus sp Bacteria from Vermicompost as Probiotic Candidates
- Creator : Sumardi, Salsabila, Thalya Shelby, Ningsih, Wahyu Apria, Juwita, Septria, Agustrina, Rochmah, Farisi, Salman, Handayani, Kusuma,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 5th International Conference on Applied Sciences, Mathematics, and Informatics (ICASMI 2024)
- Publication Type : Book | 2025-01-01
- Abstract : Vermicompost content many bacteria that was produce many organic material important. The bacteria could function as probiotics. One of these bacteria was Lactobacillus . Lactobacillus sp. bacteria are expected to have probiotic characteristics for shrimp. This study aims to select and characterize Lactobacillus sp. bacteria from vermicompost. The selection and characterization of microorganisms is the main step in the selection of potential probiotics. Fifty-two bacterial isolates were taken from the collected vermicompost. The bacteria were selected and characterized based on the characteristics of pH, temperature, concentration of NaCl, hemolysis and antibacterial products. The results of the study obtained from the selection were isolates LB37 and LB51 as probiotic candidates. The isolates grew lived on media with pH 4, 6, 8, and temperature of 28℃, 37℃ and 45℃. Both isolates also grew in media at NaCl levels of 0.05; 3.5 and 7.5%. They are not pathogenic bacteria. Isolates LB37 and LB51 produce natural antibacterials that inhibit the growth of Bacillus sp and Escherichia coli .
11. Land Use/Land Cover Change Model for Mapping, Monitoring and Modeling Environmental Changes in Segara Anakan Due to Heavy Sedimentation in the Downstream of Citanduy River-Indonesia
- Creator : Prayudha, Bayu, Ulumuddin, Yaya I., Siregar, Vincentius, Julzarika, Atriyon, Prasetyo, Lilik B., Agus, Syamsul B., Suyadi, Suyarso, Avianto, Praditya, Nurjamin, Pasaribu, Riza A., Rachmansyah, Muhammad Faisal, Adji, Arif Seno,
- Content Type : Chapter
- Publication Name : Remotely Sensed Rivers in the Age of Anthropocene
- Publication Type : Book | 2025-01-01
- Abstract : Water erosion in upland riverine areas leads to sedimentation in the lowlands, which also affects certain habitats in the estuarine ecosystem. The alteration of the estuarine ecosystem has affected the shifting of mangrove habitat in Segara Anakan Lagoon (SAL). Heavy sedimentation has impacted this area as a result of complex natural and anthropogenic activities that are causing soil erosion in the Citanduy River’s upstream area. Sedimentation causes new land to emerge gradually, reducing water area. It had also altered the environment, particularly in the western part of the SAL. It is responsible for the degradation of critical habitats such as marine biota and mangrove forests. Monitoring is essential for providing policymakers and other stakeholders with an accurate picture of the situation when managing their area and its resources. With spatial-based information, users can easily understand a comprehensive picture of phenomena that occur in a specific area. This study used the LULCC (Land Use/Land Cover Change) model to predict a shift in the lagoon habitat. The model revealed that the change in landform has mostly contributed to the alteration of mangrove composition and its distribution in the study area. The sedimentation process has led to the development of new lands, creating a low-saline environment that fosters the growth of invasive plant species. Further, invasive plant species will replace mangrove forest in the majority of the lagoon water area. The model predicted that the lagoon’s water area would shrink by 57% over the next five decades.
12. A review on the biodiversity and conservation of mangrove ecosystems in Indonesia
- Creator : Rahman, Lokollo, Frijona F., Manuputty, Gratia D., Hukubun, Ronald D., Krisye, Maryono, Wawo, Mintje, Wardiatno, Yusli,
- Content Type : Article
- Publication Name : Biodiversity and Conservation
- Publication Type : Journal | 2024-03-01
- Abstract : This study was conducted to analyze the biodiversity of mangrove species and fauna in Indonesia as well as the management strategies for its preservation. The results showed that the total number of mangrove species was 240, consisting of 48 true and 192 associated mangrove. This number also comprised 74 trees, 36 shrubs, 52 herbs, six palms, 43 epiphytes, 23 lianas, three ferns, and three parasite species. Aglaia mackiana was identified as a new record in the Papua region attributed to the New Guinea Coastal Current (NGCC), while Ceriops australis was newly found in regions of Papua, Bali—Nusa Tenggara (Timor, Flores, Sumbawa), Java, and Sumatra (Pulau Bilinton). The diversity of marine fauna in the mangrove area consisted of 125 fish species from 47 families and 169 macrozoobenthos from 52 families. In addition, there were 161 terrestrial faunas, consisting of 80 birds, 38 squamata, four crocodiles, six amphibians, 11 testudinate, and 21 mammal species. This high level of biodiversity was influenced by the commitment of the Indonesian government to managing mangrove ecosystems through conservation. These efforts were carried out to preserve and improve ecosystem services such as mangrove biodiversity, carbon stock potential, coastal protection, and the unique biodiversity of marine and terrestrial fauna. Based on the results, incredibly unique fauna included Crocodilus found in Papua, Kalimantan, Java, and Sumatra region, Halcyon sp. in Papua and Java region, Anhinga sp. in Kalimantan and Java region, as well as Nasalis larvatus in Kalimantan.
13. Human and Nature: Identifying the Sustainability of Cultural Landscape from Marine and Aeolian Landforms in Southern Yogyakarta Special Province
- Creator : Sitohang, Lidya Lestari, Makhmudiyah, Nurul, Wirabumi, Putu, Rohmawati, Nur Laili, Ridwan, Tarisa Wahyuni Putri, Geofani, Edho Bramatius, Cahyana, Chalisa Dwi, Sasangka, Dewangga Anugrah,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 4th International Conference on Social Sciences and Law (ICSSL 2024)
- Publication Type : Book | 2024-01-01
- Abstract : Marine landscapes are shaped by seawater, while aeolian landscapes are influenced by wind activity. Cultural landscapes, however, emerge from human activities, which often lead to sustainability challenges. This article examines the cultural landscape formation and its sustainability within the context of marine and aeolian land processes in the Parang Kusumo sand dunes. The study employs a qualitative descriptive method. The data collection process employed triangulation, comprising field observations, expert interviews, and literature reviews. Thematic analysis was employed in order to identify and interpret patterns within the qualitative data. This approach sheds light on the interplay between human activities and natural landscapes, with a particular attention to sustainability challenges encountered in marine and aeolian environments. The aim is to identify the cultural landscapes in marine and aeolian environments through a sustainability lens. The findings indicate that the unique marine and aeolian landforms significantly promote community activities that are economically beneficial. Nonetheless, human activities in the marine and aeolian areas of Yogyakarta are the primary factors contributing to the decline in ecosystem productivity of these landscapes.
14. Modeling Community Empowerment and Development Around the Mining Area
- Creator : Budi, Adi Asmariadi, Anggraini, Nova, Amin, Muhammad,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the International Conference on Multidisciplinary Studies (ICoMSi 2023)
- Publication Type : Book | 2024-01-01
- Abstract : Mining activities not only have an impact on the environment, but also on social life around the mining area. Houses damaged by bomb activity in mining areas are one example. Communities around the mining area are the most affected by the mining activities. Not only the impact of mining activities, but also the gaps that cause conflict between mining companies and communities around mining areas. Understanding of the relationship between mining company and communities around it, and also stakeholders involved need to be clearly known. That understanding is used to model how community empowerment and development around the mining area is built. The study uses a qualitative approach to model it. The causes of mining conflicts were collected to draw the mining conflicts mapping in Lampung Province. Observations and in-depth interviews were conducted with 17 research informants, 4 location observations, and two focus group discussions to model the suitable community empowerment and development for areas around the mining project. Related regulations were also analyzed as material to construct the model. The result found that the model shapes a loop diagram where it should be started from regulation as a legal standing and foundation. The next steps in the sequence are building community empowerment and development patterns/forms, implementing coordination, funding, object targeting, transparency and supervising, evaluation, sanctions and success promotion, and then it feeds back to regulation. This loop diagram as a community empowerment and development model can be used by government and mining companies to develop social aspects in the mining sector.
15. Ulayat Land Disputes in Minangkabau Customary Law Community: Customary Courts As An Alternative
- Creator : Iswari, Fauzi, Handayani, I Gusti Ayu Ketut Rachmi, Karjoko, Lego,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the International Conference on Law, Economic & Good Governance (IC-LAW 2023)
- Publication Type : Book | 2024-01-01
- Abstract : Ulayat rights disputes must be taken seriously and resolved relatively in customary law communities. Customary justice aids. Minangkabau customary law community Ulayat land disputes, their resolution, and customary justice are examined in this study—normative legal research using secondary data. Data was analyzed using induction and deduction. Research shows that ulayat land conflicts are created by differences in views, beliefs, opinions, interests, and the position of ulayat and customary law groups over areas where land rights have not been awarded but are held by other parties. Litigation, non-litigation, or advocacy can resolve customary rights conflicts. Nagari Courts assist in settling community issues. Village Nagari Courts are governed by regional regulations, unlike statute-based courts. The 1945 Indonesian Constitution’s Article 18B paragraph (2) and Transitional Rules Article II recognize customary justice institutions to respect customary law communities’ rights.
16. Formula Optimization of Foaming Agent Using Mixture-D-Optimal Method and Application in Peat Fire Suppression
- Creator : Subekti, Purwo, Hambali, Eliza, Suryadarma, Prayoga, Saharjo, Bambang Hero, Aprizal, Suripto, Heri, Iskandar, Isdaryanto,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 4th International Conference on Experimental and Computational Mechanics in Engineering
- Publication Type : Book | 2024-01-01
- Abstract : Foaming agents for fire suppression on peatland were formulated from the saponification product of palm oil fatty acids, namely sodium laurate and potassium palmitate. This study aimed to obtain the best formulation of sodium laurate and potassium palmitate as raw material for foaming agent concentrate through formula selection based on physical parameters foaming ability, foam stability, and surface tension. In addition to obtaining the best formula, foam liquid performance test for the foaming agent was also conducted on the peat fire suppression applications. Formulation of sodium laurate and potassium palmitate that produce the best foaming agent concentrate was 20% sodium laurate, 5.58% potassium palmitate, and 74.42% water, which produced a foaming response of 393.58%, foam stability of 69.59%, and surface tension of 31.11 dyne/cm. Foam performance test for the mixture of water and foaming agent showed that peat fire could be extinguished in 3 h 50 min 42 s using 4.56 L/m 2 extinguishing solution. Meanwhile, fire suppression with water requires 5 h 31 min 59 s, with the application of 9.72 L/m 2 solution. Water mixed with a foaming agent concentrate can extinguish peat fires faster than using water alone, besides being faster the application of foaming agents can reduce water consumption.
17. Integrating GIS and remote sensing for land use/land cover mapping and groundwater potential assessment for climate-smart cocoa irrigation in Ghana
- Creator : Akpoti, Komlavi, Dembélé, Moctar, Forkuor, Gerald, Obuobie, Emmanuel, Mabhaudhi, Tafadzwanashe, Cofie, Olufunke,
- Content Type : Article
- Publication Name : Scientific Reports
- Publication Type : Journal | 2023-09-25
- Abstract : Although Ghana is a leading global cocoa producer, its production and yield have experienced declines in recent years due to various factors, including long-term climate change such as increasing temperatures and changing rainfall patterns, as well as drought events. With the increasing exposure of cocoa-producing regions to extreme weather events, the vulnerability of cocoa production is also expected to rise. Supplemental irrigation for cocoa farmers has emerged as a viable adaptation strategy to ensure a consistent water supply and enhance yield. However, understanding the potential for surface and groundwater irrigation in the cocoa-growing belt remains limited. Consequently, this study aims to provide decision-support maps for surface and groundwater irrigation potential to aid planning and investment in climate-smart cocoa irrigation. Utilizing state-of-the-art geospatial and remote sensing tools, data, and methods, alongside in-situ groundwater data, we assess the irrigation potential within Ghana's cocoa-growing areas. Our analysis identified a total area of 22,126 km 2 for cocoa plantations and 125.2 km 2 for surface water bodies within the cocoa-growing regions. The multi-criteria analysis (MCA) revealed that approximately 80% of the study area exhibits moderate to very high groundwater availability potential. Comparing the MCA output with existing borehole locations demonstrated a reasonable correlation, with about 80% of existing boreholes located in areas with moderate to very high potential. Boreholes in very high potential areas had the highest mean yield of 90.7 l/min, while those in low groundwater availability potential areas registered the lowest mean yield of 58.2 l/min. Our study offers a comprehensive evaluation of water storage components and their implications for cocoa irrigation in Ghana. While groundwater availability shows a generally positive trend, soil moisture and surface water have been declining, particularly in the last decade. These findings underline the need for climate-smart cocoa irrigation strategies that make use of abundant groundwater resources during deficit periods. A balanced conjunctive use of surface and groundwater resources could thus serve as a sustainable solution for maintaining cocoa production in the face of climate change.
18. The Potential of Mangrove Forests for Tanjung Rejo Communities, Deli Serdang District, Indonesia
- Creator : Dalimunthe, Femmy Indriany, Yanti, Dewi, Albattat, Ahmad,
- Content Type : Chapter ConferencePaper
- Publication Name : 4th International Conference on Tourism, Gastronomy, and Tourist Destination (TGDIC 2023)
- Publication Type : Book | 2023-01-01
- Abstract : This study aims to see the potential of mangrove forests for the people of Tanjung Rejo, Deli Serdang Regency, Indonesia. This qualitative study uses Miles and Huberman data analyses. The results of the study concluded that Tanjung Rejo Village has the potential to be developed to improve the quality of community welfare, namely from the agricultural sector, tourist attractions, fisheries, and accommodation sectors. The Tanjung Rejo Mangrove Forest contributes various potentials, including crane breeding, crab fishing attractions, the maintenance of immigrant bird species, Mangrove Batik Houses, and Mangrove production in the form of lunkhead, syrup, chips, jam, and snacks. Tanjung Rejo’s limitations in developing potential are due to the limited allocation of funds and marketing conditions in producing processed food from mangroves. The strategy that the local government has carried out in developing the potential of Mangrove Forests is to create tour packages for tourists visiting Tanjung Rejo and involve the community in the Sapta Pesona (seven charms) program. It is hoped that the contributions of various government and non-government parties can be carried out by participating in developing the potential of Tanjung Rejo, especially provided by the Mangrove Forest.
19. The Best Alternative for Revitalising the Asset Area of PT. KAI in Kota Tua, Jakarta
- Creator : Ramadhani, Anindita, Wartaman, Anita Sitawati, Fatimah, Endrawati, Adriana, Martina Cecilia, Sitorus, Aldi Mangapul, Zikra, Audia,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 6th International Conference on Indonesian Architecture and Planning (ICIAP 2022)
- Publication Type : Book | 2023-01-01
- Abstract : The revitalisation of Kota Tua (Jakarta old town area) is facing arduous land ownership problems. There, PT. Kereta Api Indonesia (KAI), a state-owned enterprise, has the ownership of land assets in the core zone of Kota Tua that needs to be revitalised. Therefore, the research aims to find the best alternative for managing PT. KAI land assets to increase the economic value of Kota Tua. The research method is descriptive, using the ‘highest and best use’ analysis technique to assess the feasibility of legal, physical, financial and productivity aspects of the asset. The finding identified that the best land use alternative is mixed land use, whereby 65% of the area is allocated for mixed activities (i.e. office, trade, services and tourism) and 35% for rental flat housing.
20. The Effect of Cow Manure and NPK Fertilizer on Soil Chemical Fertility, Soybean Growth, and the Yield on Sandy Soil
- Creator : Sagala, Danner, Tasti, Eka Putri Lingga, Rustianti, Sri,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 3rd International Conference on Agriculture (ICA 2022)
- Publication Type : Book | 2023-01-01
- Abstract : Research to determine the effect of cow manure and NPK fertilizer on soil chemical fertility, soybean growth, and the yield on sandy soil was conducted in the coastal area of Bengkulu, Indonesia. Doses of cow manure consisting of 0, 30, 50, and 70 t ha −1 and NPK fertilizer composed of 0, 150, 300, and 450 kg ha −1 were arranged according to a randomized block design. The response of soybean plants was observed through plant height, number of leaves, number of branches, number of pods per plant, the weight of 100 seeds, and seed production per plot (1.5 m 2 ). The results showed that coastal land with sandy characteristics was included as marginal land with low chemical and physical fertility. The application of cow manure and NPK fertilizers caused an increase in soil chemical fertility. The growth and yield of soybean plants were not significantly affected by the application of various doses of cow manure and NPK fertilizer. However, soybean seed yields tended to be higher with high dosages of cow manure and NPK fertilizers.
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