15 research outputs found
Sampling methods of microplastics in freshwater and seawater envionment
No full textMicroplastic had been contaminating freshwater ecosystem. But, our knowledge to identify kind of microplastics are still limited. Microplastic research methods in both water and sediment are generally divided into several stages: sampling, sample purification and sample identification. Samples can come from water or sediment. This journal provides several microplastic sampling methods to choose from, along with their advantages and disadvantages. Until a pure microplastic sample is obtained
Interaction between Styrofoam and Microalgae <i>Spirulina platensis</i> in Brackish Water System
No full textStyrofoam is a thermoplastic with special characteristics; it is an efficient insulator, is extremely lightweight, absorbs trauma, is bacteria resistant, and is an ideal packaging material, compared to other thermoplastics. The aim of this study was to analyze the interaction between Styrofoam and S. platensis. The study examined the growth of S. platensis under Styrofoam stress, changes in Styrofoam functional groups, and their interactions. The research method was culture carried out in brackish water (12 mg/L salinity) for 30 days. S. platensis yields were tested by FTIR and SEM-EDX and Styrofoam samples by FTIR. The results showed the highest growth rate of S. platensis in cultures treated with 150 mg Styrofoam that is 0.0401 day−1. FTIR analysis shows that there has been a change in the functional group on Styrofoam. At a wavelength of 3400–3200 cm−1 corresponds to the alcohol group and there was an open cyclic chain shown by the appearance of a wavelength at 1680–1600 cm−1 assignment to alkene. SEM-EDX test results show that Styrofoam can be a resource of nutrition, especially carbon for S. platensis to photosynthesize. Increased carbon content of 24.56% occurred in culture, meanwhile, Styrofoam is able to damage S. platensis cells
Dampak Aplikasi Vinase terhadap Lingkungan dan Pertumbuhan Tanaman Tebu (Saccharum officinarum L.)
Full text linkVinase merupakan limbah cair dari industri bioetanol. Vinase diketahui dapat menimbulkan pencemaran lingkungan sekaligus berpotensi dijadikan sebagai material pemupukan dan irigasi, terutama di perkebunan tebu. Penelitian ini merupakan studi literatur yang bertujuan untuk membahas mengenai dampak aplikasi vinase terhadap lingkungan dan pertumbuhan tebu. Hasil studi menunjukkan bahwa vinase dapat digunakan sebagai pupuk karena mengandung berbagai unsur hara terutama kalium (K), bahkan dosis tertentu vinase dapat mensubstitusi pupuk anorganik pada budidaya tebu. Beberapa studi menunjukkan korelasi positif antara vinase dengan pertumbuhan dan hasil tebu. Namun, aplikasi vinase dalam bentuk vinase mentah (VM) dapat berdampak negatif jika dilakukan dalam jangka panjang, antara lain degradasi tanah, pencemaran badan air, hingga kematian tebu. Berbagai dampak negatif VM ini dapat diminimalkan melalui pengaturan jumlah dan konsentrasi VM atau pengolahan VM tersebut, baik secara anaerobik, aerobik, maupun biologis. Pengolahan VM dapat mengurangi BOD, COD, serta substansi kimia yang berbahaya sehingga tidak menimbulkan pencemaran lingkungan yang serius
Shoreline change analysis and its impact on coastal communities using remote sensing and GIS in the Kedungsepur Metropolitan area
No full textShoreline mapping plays an important role in sustainable coastal management, particularly in strategic areas such as the Kedungsepur Metropolitan Area. This study aims to analyzes shoreline changes and identifies their impact on coastal communities. Shoreline extraction was conducted using remote sensing data from Landsat satellite imagery, while the analysis of shoreline changes was performed using the Digital Shoreline Analysis System (DSAS) within a Geographic Information System (GIS) environment. The results reveal that shoreline changes – both erosion and accretion – occurred across Kendal Regency, Semarang City, and Demak Regency. The most severe coastal erosion was identified in Bedono Village (Demak Regency), while the highest accretion occurred in Pidodo Kulon Village (Kendal Regency). When analyzed by watershed units, the highest accretion was found in the Bodri Watershed, one of the priority areas for revitalization. These findings highlight the need for integrated policy approaches that connect coastal and watershed management to ensure long-term sustainability
Organic Fertilizer Production from Corn Litter Waste Using Micro bacteria
No full textThe use of organic fertilizers is considered to be beneficial by farmers such as increasing land productivity. Corn farming contributes the highest agricultural waste in Indonesia, such as stem litter, leaves and husks. This waste has the potential to be used as organic fertilizer because based on research it contains many nutrients in it. This study aims to evaluate the effectiveness of EM4-based microbial treatment in accelerating the composting of corn litter waste through observational qualitative analysis. The results of this study indicate that the addition of microorganisms can shorten the time to make organic fertilizer. On the 6th day, the corn litter waste sample that had been given EM4 had shown the appropriate criteria for organic fertilizer in the form of a neutral pH concentration of 6.5 and did not have a disturbing odor and a texture that was no longer stiff. These findings suggest that EM4 can be used to accelerate composting of corn waste into high-quality organic fertilizer, potentially supporting sustainable agriculture
Effect of Black Soldier Fly Frass (BSFF) on The Growth and Yield of Cayenne Pepper (Capsicum frutescens L.)
Full text linkCayenne pepper is a leading horticultural commodity in InÂdonesia. However, the productivity and quality produced have not met market expectations. One of the contributing factors is the low quality of the soil. For this reason, switching from inorganic fertilizers to orÂganic fertilizers, such as Black Soldier Fly Frass (BSFF), is necessary because it can provide several nutrients crucial in improving the soil\u27s physical, chemical, and biological properties. In this study, the formuÂlation of BSFF was tested for its impact on cayenne pepper\u27s growth response and yield. The research was arranged in a completely ranÂdomized design consisting of three treatments with three repetitions, namely P1 (100 grams of BSFF biofertilizer), P2 (250 grams of BSFF biofertilizer), and P3 (500 grams of BSFF biofertilizer). The results showed an interaction between doses of BSFF biofertilizer on plant height, physical conditions (color and size), number, and wet weight of cayenne pepper; which P3 gave the most optimal growth response and yield. In contrast to these results, all treatments reduced vitamin C to the high level of N nutrients in BSFF biofertilizer. Therefore, furÂther research is needed to find the right dosage (below 100 grams/500 grams of media) so that cayenne pepper has a high vitamin C.Cayenne pepper is a leading horticultural commodity in Indonesia. However, the productivity and quality produced have not met market expectations. One of the contributing factors is the low quality of the soil. For this reason, switching from inorganic fertilizers to organic fertilizers, such as Black Soldier Fly Frass (BSFF), is necessary because it can provide several nutrients that are crucial in improving the soil\u27s physical, chemical, and biological properties. In this study, the formulation of BSFF was tested for its impact on cayenne pepper\u27s growth response and yield. The research was arranged in a completely randomized design consisting of three treatments with three repetitions, namely P1 (100 grams of BSFF biofertilizer), P2 (250 grams of BSFF biofertilizer), and P3 (500 grams of BSFF biofertilizer). The results showed an interaction between doses of BSFF biofertilizer on plant height, physical conditions (color and size), number, and wet weight of cayenne pepper; which P3 gave the most optimal growth response and yield. In contrast to these results, all treatments reduced vitamin C to the high level of N nutrients in BSFF biofertilizer. Therefore, further research is needed to find the right dosage (below 100 grams/500 grams of media) so that cayenne pepper has a high vitamin C.Â
Keanekaragaman Vegetasi dan Pola Persebaran Pohon di Mata Air Kalisegoro 2 Kecamatan Gunungpati
No full textHuman life on earth cannot be separated from water. Water is an absolute necessity that humans need. Water needs can be obtained from 2 sources, namely water from the surface and water from the ground. Springs are a source of water obtained from groundwater. Kalisegoro 2 spring is one of the springs in Gunung Pati District, Semarang City. This spring is in Kalisegoro Village where the surrounding land cover is vegetation. This type of research is quantitative in the form of analysis of species diversity and tree distribution patterns. The aim of this research is to determine the diversity of tree species and tree distribution patterns in Kalisegoro 2 springs in Gunung Pati District. The results of this research show that the diversity of vegetation in the Kalisegoro 2 springs amounts to 145 individuals and 10 types of species, the Swietenia mahagoni species is the dominant species found at the Kalisegoro 2 springs location with an INP of 0.59. The vegetation diversity index at Kalisegoro 2 springs is included in the medium category in the range 1<H'<3. The distribution pattern of trees in the Kalisegoro 2 spring is quite even, this is known through the tracking method that has been carried out in the area around the spring. ABSTRAKKehidupan manusia di muka bumi tidak dapat terlepas dari air. Air merupakan suatu kebutuhan mutlak yang dibutuhkan oleh manusia. Kebutuhan air dapat diperoleh melalui 2 sumber yakni air dari permukaan dan air tanah. Mata air merupakan salah satu sumber air yang bersumber dari air tanah. Mata air Kalisegoro 2 merupakan salah satu mata air yang berada di Kecamatan Gunungpati Kota Semarang, mata air ini terdapat di Kelurahan Kalisegoro yang tutupan lahan sekitarnya berupa vegetasi. Jenis penelitian ini adalah kuantitatif berupa analisis keanekaragaman jenis dan pola penyebaran pohon. Tujuan dari penelitian ini adalah untuk mengetahui keanekaragaman jenis pohon dan pola persebaran pohon di sekitar mata air. Hasil penelitian ini menunjukkan keanekaragaman vegetasi di mata air kalisegoro 2 berjumlah 145 individu dan 10 jenis spesies, spesies Swietenia mahagoni merupakan spesies dominan yang ditemukan di lokasi mata air Kalisegoro 2 dengan jumlah INP sebesar 0,59. Indeks keanekaragaman vegetasi pada mata air Kalisegoro 2 termasuk dalam kategori sedang karena berada pada rentang 1<H'<3. Pola persebaran pohon pada mata air Kalisegoro 2 sudah cukup merata, hal ini diketahui melalui metode tracking yang telah dilakukan di area sekitar mata air.
Effect of Black Soldier Fly Frass (BSFF) on The Growth and Yield of Cayenne Pepper (Capsicum frutescens L.)
Full text linkCayenne pepper is a leading horticultural commodity in InÂdonesia. However, the productivity and quality produced have not met market expectations. One of the contributing factors is the low quality of the soil. For this reason, switching from inorganic fertilizers to orÂganic fertilizers, such as Black Soldier Fly Frass (BSFF), is necessary because it can provide several nutrients crucial in improving the soil\u27s physical, chemical, and biological properties. In this study, the formuÂlation of BSFF was tested for its impact on cayenne pepper\u27s growth response and yield. The research was arranged in a completely ranÂdomized design consisting of three treatments with three repetitions, namely P1 (100 grams of BSFF biofertilizer), P2 (250 grams of BSFF biofertilizer), and P3 (500 grams of BSFF biofertilizer). The results showed an interaction between doses of BSFF biofertilizer on plant height, physical conditions (color and size), number, and wet weight of cayenne pepper; which P3 gave the most optimal growth response and yield. In contrast to these results, all treatments reduced vitamin C to the high level of N nutrients in BSFF biofertilizer. Therefore, furÂther research is needed to find the right dosage (below 100 grams/500 grams of media) so that cayenne pepper has a high vitamin C.Cayenne pepper is a leading horticultural commodity in Indonesia. However, the productivity and quality produced have not met market expectations. One of the contributing factors is the low quality of the soil. For this reason, switching from inorganic fertilizers to organic fertilizers, such as Black Soldier Fly Frass (BSFF), is necessary because it can provide several nutrients that are crucial in improving the soil\u27s physical, chemical, and biological properties. In this study, the formulation of BSFF was tested for its impact on cayenne pepper\u27s growth response and yield. The research was arranged in a completely randomized design consisting of three treatments with three repetitions, namely P1 (100 grams of BSFF biofertilizer), P2 (250 grams of BSFF biofertilizer), and P3 (500 grams of BSFF biofertilizer). The results showed an interaction between doses of BSFF biofertilizer on plant height, physical conditions (color and size), number, and wet weight of cayenne pepper; which P3 gave the most optimal growth response and yield. In contrast to these results, all treatments reduced vitamin C to the high level of N nutrients in BSFF biofertilizer. Therefore, further research is needed to find the right dosage (below 100 grams/500 grams of media) so that cayenne pepper has a high vitamin C.Â
Sustainability analysis of spring water utilization as a community-based clean water supply system in rural areas
Full text linkBackground: This study aims to assess the sustainability of utilizing spring water as a clean water supply system (WSS) in Truko Hamlet, Surokonto Kulon Village, Kendal Regency. Parikesit Spring serves as the primary source of clean water for the village community and plays a crucial role in meeting daily needs. By integrating a community-based approach through the Community-Based Water Supply and Sanitation Program/Penyediaan Air Minum dan Sanitasi Berbasis Masyarakat (PAMSIMAS), water resource management is carried out independently and sustainably. Method: The research method follows a sustainability framework for WSS, encompassing social, financial, institutional, environmental, and technical aspects. Data collection involved laboratory water quality analysis and in-depth interviews with eight key respondents, including PAMSIMAS managers and community users. Environmental services provided by the spring were also identified. Findings: The findings indicate that the WSS in this village is able to meet the community’s clean water needs in terms of quantity, quality, and continuity, despite challenges such as sedimentation during heavy rains and limited availability of backup pumps. High community participation in water management and the sustainability of PAMSIMAS services are key points supporting the achievement of Sustainable Development Goal (SDG) 6, “Clean Water and Sanitation for All.” Conclusion: For further sustainability, recommendations include improving water quality, strengthening the organizational structure, and enhancing technical facilities. Novelty/ originality of this article: The novelty of this study lies in evaluating the sustainability of a community-based spring water supply system (PAMSIMAS) in Truko Hamlet, integrating social, technical, environmental, and institutional aspects to support SDG 6
Analysis of agricultural land carrying capacity and projected food demand
No full textBackground: Cilacap Regency is one of the leading rice-producing regions in Central Java and is widely recognized as a rice granary of the province. This study aims to assess the agricultural land carrying capacity and project future population growth in Cilacap Regency. Method: A quantitative descriptive approach was employed using secondary data sourced from the Cilacap Regency statistical reports for the years 2013–2023. Findings: The analysis reveals that the agricultural land carrying capacity in Cilacap consistently falls under Class 1 each year, indicating the region’s strong ability to achieve rice self-sufficiency. However, population projections for 2033 show that certain districts—namely South Cilacap, Central Cilacap, and North Cilacap—may require an expansion of harvested area to meet future food demand. A key limitation of this study lies in the absence of projected agricultural land carrying capacity for the year 2033. Conclusion: Future research should address this gap to provide a more comprehensive outlook for sustainable food security planning in Cilacap Regency. Novelty/ originality of this article: The novelty of this study lies in assessing Cilacap Regency’s agricultural land carrying capacity alongside future population projections, identifying potential food demand challenges, and informing sustainable rice self-sufficiency planning strategies
