This study aims to evaluate the growth and production of sweet corn plants in response to the application of commercial NPK fertilizer and various doses of nitrogen-phosphorus fertilizer tablets. From early October 2022 to late January 2023, research was conducted at Research and Development Luas Birus Utama to produce nitrogen-phosphorus fertilizer tablets and at Research and Development Syngenta Indonesia Cikampek Station, Karawang, to perform a semi-field analysis. A factorial randomized block design with two treatment factors was employed in this study. The first factor was five types of nitrogen-phosphorus fertilizer tablets, namely, A (0% nitrogen and 6.3% phosphorus), B (0.81% nitrogen and 6.3% phosphorus), C (1.57% nitrogen and 6.1% phosphorus), D (2.33% nitrogen and 6.2% phosphorus), and E (3.06% nitrogen and 6.2% phosphorus). The second factor was F (standard nitrogen, phosphorus, and potassium). The results revealed that applying different dosages of nitrogen-phosphorus fertilizer tablets in combination with potassium chloride fertilizer yielded no different effect on the growth, biomass, and yield components of sweet corn plants when compared to applying NPK fertilizer. A comparison between the soil test results before and after application revealed that the formulation of fertilizers in tablet form helps plants to effectively absorb the required nutrients. It is currently possible to develop small-scale or microscale green ammonia production technology to fulfill the fertilizer requirements of rural communities because of its low cost, low carbon emissions, and low renewable energy consumption. The scarcity of fertilizer supplies endangers Indonesia’s food sustainability. Nitrogen-phosphorus fertilizer tablet production technology can be used in areas with a scarcity of inorganic fertilizers but with the potential for low-grade phosphate mines using commercial ammonia solutions. Thus, understanding how to produce nitrogen-phosphorus fertilizer tablets from ammonia solution will aid in the acceptance of microscale green ammonia production technology. Doi: 10.28991/ESJ-2024-08-02-016 Full Text: PDF

Rice is a staple food in most Asian countries, and food security is often viewed as having a rice supply to avoid a food crisis. The large number of people who have low incomes means there is a risk of household economic conditions being threatened when food prices are not controlled. We present a different approach by measuring rice price volatility at the local market level with climate and macroeconomic variables. The model succeeds in representing the variables that affect rice prices by an average of 75% nationally. The influence of macroeconomic variables and climate dynamics was found to have a non-uniform pattern from one region to another. The factors that dominate the volatility of rice prices in each province were different. To help address these problems, it is suggested to model and integrate climate data and macroeconomic variables. The output can be used to determine national policies for controllable factors and anticipate climate dynamics to reduce the risk that communities will have difficulty accessing food.

Multicriteria Decision Making (MCDM) is increasingly being utilized as an analytical research tool for sectors that require decision-making with specific objectives and constraints, such as the tourism industry. Sustainable tourism, which examines the balance of numerous aspects, including stakeholders’ interests, is the critical feature propelling the increased usage of MCDM. This paper explores the use of Multicriteria Decision Making (MCDM) methods applied in studies of sustainable tourism and its derivative term, low-carbon tourism, using a systematic literature review (SLR) search from the Scopus database. The analysis has identified 189 relevant studies published between 1987 to April 2022. After selection, screening, and synthesizing processes, we selected 135 pertinent studies, which were analysed in general descriptive data, citation impacts, geographical categorization, categorization of the methodologies’ objectives, and possible trajectories of similar research in the future. We find that highly cited authors and articles are related to sustainable tourism indicators' development and case studies. Furthermore, most relevant studies are concentrated in Asia and Europe rather than other regions. We also categorize the reviewed studies into six classifications depending on each method's intended usage and further suggest four contexts for the studies’ future trajectory.

Producers improve environmental performance to reduce the release of post-production waste. The positive environmental performance of producers is expected to influence consumer environmental attitudes positively, specifically toward post-consumption waste. However, research is deficient in exploring the impact of producer environmental performance (PEP) on retailer-consumer relationship quality (RCRQ) and consumer purchasing behavior (CPB) simultaneously to drive consumer environmental attitude (CEA) in the retail environment. Therefore, this study aims to examine the effect of PEP on RCRQ and CPB simultaneously to drive CEA in the retail environment. The survey was conducted at 17 retail outlets for 150 consumers of lubricant producers in the industrial city of Gresik, Indonesia. Partial Least Square analysis indicates that consumers perceive PEP has positive effects on CEA, but negatively affects RCRQ and positively affects CPB. Thereby, CPB has a more significant positive effect than RCRQ on CEA. Although RCRQ and CPB have significant positive total effects, CPB has a more significant indirect effect than RCRQ in mediating the effect of PEP on CEA. This study provides actionable guidance to reduce the negative impact of PEP on RCRQ to enhance the mediating role of RCRQ for more positive consumer environmental attitudes.

Perkembangan perkotaan yang pesat terjadi di negara berkembang terutama pada wilayah pinggiran kota. Dampaknya adalah terjadinya penjalaran yang merupakan fenomena perkotaan yang kompleks dan sulit diukur. Pemangku kebijakan memerlukan metode yang sederhana untuk mengontrol dan mengevaluasi penjalaran sebuah kota. Penelitian ini mengintegrasikan model Shannon Entropy dengan penginderaan jauh dan SIG untuk menganalisis pola penjalaran kota di Bodetabek berdasarkan dua aspek jarak yaitu terhadap pusat kota dan jaringan jalan untuk menggambarkan pola penjalaran perkotaan. Penerapan Shannon’s Entropy di Bodetabek pada 1989-2014 menunjukkan bahwa pola penjalaran linier lebih dominan terjadi di Kabupaten Bogor, Bekasi dan Kota Bogor. Semakin besarnya indeks Shannon’s Entropy mengindikasikan kecenderungan penjalaran perkotaan yang semakin acak. Pola penjalaran melompat (dan acak) terjadi di Kabupaten Tangerang yang ditandai indeks entropy yang tinggi. Penjalaran kota di Bodetabek dipengaruhi oleh karakterik fisik dan sosial wilayah terutama aspek kemiringan tanah dan perubahan jumlah penduduk

Community-based environmental conservation and protection is one form of decentralization in the management of an area. Community-based initiatives are considered a sustainable collaborative alternative. The implementation of community-based initiatives can be found in various countries, such as the Voluntary Environmental Agents (VEA) in Amazon, Brazil and Social Forestry (SF) in Indonesia. This study aims to review the lessons learned from the CBC successful practice of VEA Program in Amazon, Brazil; determine whether these lessons can be adapted to enhance the positive impact of SF implementation in Indonesia, and; formulate relevant recommendations for SF implementation in Indonesia. A qualitative approach with descriptive-comparative method on references that are relevant to VEA and SF implementation was used in this study. There are several conditions that contribute to the successful VEA implementation: strengthening of local community initiatives, institutions, and capacities; formalization of community-based conservation schemes with supportive regulations; effective control system of the state; continuous support from external institutions, and; continuous and independent financing of activities. These conditions are relevant to be implemented in Indonesia. There is a fundamental difference between the implementation of VEA in Brazil and SF in Indonesia. Community-based initiatives in Brazil prioritized environmental sustainability to be able to “leverage” community’s economic and social sustainability in long term, while practices in Indonesia did not reflect this. This is illustrated by: lack of public awareness and concern for long-term environmental sustainability; negative impacts on the environment from SF implementation, and; vision of SF implementation which tends to be based on short-term targets.