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Kajian Komprehensif Agronomi, Fisiologi, dan Biokimia Tanaman Salak (Salacca zalacca) di Bawah Naungan
Get PDFSalak (Salacca zalacca) merupakan komoditas hortikultura bernilai ekonomi tinggi yang banyak dibudidayakan di daerah tropis, termasuk Indonesia. Pertumbuhan dan produktivitas tanaman ini sangat dipengaruhi oleh kondisi lingkungan, khususnya tingkat naungan. Naungan berperan penting dalam mengatur intensitas cahaya yang diterima tanaman, sehingga berdampak pada proses fotosintesis, pertumbuhan, dan pembentukan senyawa bioaktif. Penelitian ini bertujuan untuk mengkaji pengaruh berbagai tingkat naungan terhadap pertumbuhan tanaman salak ditinjau dari tiga aspek utama, yaitu agronomi, fisiologi, dan biokimia. Aspek agronomi meliputi pengukuran tinggi tanaman, jumlah daun, dan hasil buah; aspek fisiologi meliputi kadar klorofil dan laju transpirasi; sedangkan aspek biokimia mencakup analisis kandungan flavonoid, prolin, dan senyawa antioksidan. Penelitian menggunakan Rancangan Acak Lengkap (RAL) nonfaktorial dengan pengamatan laboratorium untuk memperoleh data yang akurat. Hasil menunjukkan bahwa tingkat naungan moderat (40–60%) mampu meningkatkan pertumbuhan, efisiensi fotosintesis, serta kandungan senyawa antioksidan tanaman salak. Dengan demikian, penerapan naungan optimal menjadi strategi agronomis yang efektif dalam meningkatkan kualitas dan produktivitas tanaman salak secara berkelanjutan
Faktor Sosial Dan Ekonomi Dalam Pergeseran Budidaya Karet Ke Kelapa Sawit di Kabupaten Langkat
Get PDFPenelitian ini bertujuan untuk menganalisis faktor-faktor sosial dan ekonomi yang memengaruhi keputusan petani dalam melakukan pergeseran budidaya dari karet ke kelapa sawit di Kabupaten Langkat, serta menelaah dampak perubahan tersebut terhadap kondisi sosial ekonomi masyarakat setempat. Pergeseran komoditas ini mencerminkan dinamika agraria yang dipengaruhi oleh fluktuasi harga pasar, biaya produksi, ketersediaan tenaga kerja, serta persepsi petani terhadap keuntungan jangka panjang. Secara teoretis, penelitian ini didasarkan pada konsep ekonomi pertanian, perilaku pengambilan keputusan petani, serta perubahan sosial akibat transformasi komoditas perkebunan. Metode yang digunakan adalah studi literatur dengan mengkaji hasil-hasil penelitian terdahulu dari berbagai sumber nasional dan internasional untuk mengidentifikasi faktor pendorong utama dan implikasinya. Hasil kajian menunjukkan bahwa faktor ekonomi, seperti harga jual dan pendapatan yang lebih stabil, menjadi pendorong utama dalam pergeseran budidaya, diikuti oleh faktor sosial seperti adaptasi terhadap pola kerja dan struktur sosial baru. Pergeseran ini turut membawa dampak terhadap kesejahteraan, pola kepemilikan lahan, dan hubungan sosial masyarakat di pedesaan
Sinergitas Lembaga Kepolisian Dalam Pencegahan Kejahatan oleh Satuan Fungsi Kepolisian Melalui Pemolisian Masyarakat Guna Memantapkan Pemeliharaan Keamanan Dan Ketertiban Masyarakat
Get PDFTujuan penelitian ini adalah untuk menganalisis sinergitas lembaga kepolisian dalam pencegahan kejahatan oleh satuan fungsi kepolisian melalui pemolisian masyarakat guna memantapkan pemeliharaan keamanan dan ketertiban masyarakat (harkamtibmas). Metode yang digunakan dalam penelitian ini adalah metode bauran (mix method) antara metode deskriptif dengan metode survai. Sumber data digali melalui teknik pengumpulan data yang digunakan, terutama kepada narasumber/ informan penelitian yang terpilih sesuai dengan kriteria narasumber/ informan penelitian. Teknik pengumpulan data melalui studi dokumen. Teknik ini digunakan untuk informasi yang berkaitan dengan kegiatan pencegahan kejahatan, termasuk kegiatan penguatannya yang dilakukan melalui kegiatan polmas. Dokumen yang dimaksud dapat berupa pedoman, panduan, laporan, rencana kegiatan, MOU, dan dokumen pendukung lainnya yang relevan dengan isu penelitian. Teknik pengumpulan data melalui angket/ kuesioner yang akan disebarkan melalui google form.. Penelitian ini dilakukan di Polda Kalimantan Barat dan jajaran. Teknik analisis dilakukan melalui empat tahap yaitu pengumpulan data, reduksi data, penyajian data dan langkah terakhir adalah penarikan kesimpulan dan verifikasi. Hasil penelitian ini menunjukkan bahwa Sinergi eksternal pencegahan kejahatan yang dilakukan oleh Polda Kalbar dan jajaran telah berjalan cukup baik. Namun demikian, ada beberapa program atau pelaksanaan yang masih belum fokus pada aspek-aspek yang berkorelasi dengan munculnya kejahatan secara spesifik. Sinergi belum secara khusus mengintervensi faktor penyebab, faktor pendorong dan faktor pemicu munculnya kejahatan. Sinergi internal antara satuan fungsi dan satuan kewilayahan telah berjalan sesuai dengan tugas pokok dan fungsi masing-masing. Aspek yang perlu mendapatkan penguatan meliputi mekanisme sharing informasi, kordinasi penggunaan sumber daya dan metode untuk pencegahan kejahatan yang masih cenderung partial berbasis pada tugas pokok masing-masing
ANALYSIS OF MATURING AND MATURATION OF BURAHOL PURWODADI BOTANICAL GARDEN COLLECTION
Get PDFFruit maturing enhances maturity and quality, making fruits more attractive. This process involves physiological and biochemical changes, including increased respiration, ethylene production, texture alteration, and heat improvement. This study examines the effects of different ethylene sources: calcium carbide (CaC2), 500 mg vitamin C, and potassium permanganate (PK), on the maturing of Burahol fruit (Stelechocarpus burahol). A Completely Randomized Factiorial Design (CRFD) with five replications was employed. Treatments included E1 (control, no ethylene), E2 (0.5% CaC2 of fruit weight wrapped in cloth), E3 (500 mg vitamin C/kg fruit), and E4 (PK crystals in a sealed chamber). Data collected on day three evaluated skin color (RHS charts), texture, and mucus presence. Results showed CaC2 and PK induced optimal maturing, yielding uniformly brownish-yellow fruits (20A/Brilliant Yellow), firm texture, and no mucus. Vitamin C fails to prevent decay due to mechanical damage from forced harvesting. This study highlights CaC2 and PK as effective maturing agents, providing practical solutions for Burahol fruit post-harvest management
THE ROLE OF Amorphophallus titanum (Becc.) IN CULTURE, ECOSYSTEMS AND SCIENCE
Get PDFAmorphophallus titanum (Becc.) is one of the rare species of flora in Indonesia, this flora is also an endemic plant to the island of Sumatra that naturally grows along Bukit Barisan and is mostly found in the western slopes such as Bengkulu, Kerinci, Palembang, Bukit Tinggi. This research was conducted to determine the role of the rare flower A. titanum (Becc) which is not found in all regions in Indonesia. The method used in this article is a literature study by analyzing or reviewing several journal articles. This review provides information that shows the role of A. titanum (Becc.) in culture, its role in ecosystems, its role in science and its challenges and opportunities in the future. Conservation efforts of A.titanum not only protect its species, but also preserve the cultural values associated with its presence. A. titanum is not only important for maintaining the sustainability of its own species, but also for protecting tropical forest ecosystems that are home to a diverse range of flora and fauna. A. titanum (Becc.) also plays an important role as a subject of scientific research to understand various aspects of life, ecosystems, and environmental conservation efforts.
IN SILICO AND IN VITRO ANALYSIS OF BLASHV AND BLATEM GENE PRIMERS
Get PDFBacterial pollution that occurs in the environment causes an increase in disease and antibiotic use, which leads to resistance. This study analyzes antibiotic-resistant blaSHV and blaTEM genes in silico and in vitro. Antibiotic-resistant bacterial isolates on ESBL will be carried out PCR and electrophoresis. The type of research used is descriptive observational research conducted from April to September 2024. The sampling technique used was random sampling. Primer blaSHV with sequence F' AGGATTGACTGCCTTTTTG and R' ATTTGCTGATTTCGCTCG, while primer blaTEM has sequence F' ATCAGCAATAAACCAGC and R' CCCCGAAGAACGTTTTC. Data analysis was carried out by analyzing in silico results obtained from the NCBI website and observing the visualization results of PCR amplification indicated by the presence of DNA bands. In silico results showed 25 organisms attached to blaSHV and 29 organisms to blaTEM. In vitro results shown by electrophoresis visualization showed blaSHV amplicons measuring 392 bp with an annealing temperature of 50.5°C, and blaTEM measuring 517 bp with an annealing temperature of 42°C. The success rate of PCR was shown by clear and specific amplification of both genes, indicating that the PCR method performed was effective in detecting blaSHV and blaTEM genes in ESBL antibiotic-resistant bacterial isolate samples.
THE IDENTIFICATION OF MICROPLASTICS IN GILLS AND DIGESTIVE TRACT IN TILAPIA FISH (Oreochromis mossambicus) IN LAKE TOBA
Get PDFMicroplastics threaten the survival of aquatic organisms including fish in Lake Toba. This study aims to identify the type and abundance of microplastics found in the gills and digestive tract of tilapia (Orochromis mossambicus) in cages and non-cages of Lake Toba, Samosir Regency. Sampling was conducted in February-March 2024 at three stations namely Tanjung Bunga, Palipi, Simarsasar with sampling at each location of 10 caged and non-caged fish each. Extraction of microplastics using the Fenton. Observation parameters included gill weight, gut length, and abundance of microplastics in the gills and digestive tract. The results revealed that the majority of microplastics identified in cages and non-cages were fiber and filament types, with non-cage fish having a higher abundance of microplastics than cage fish
SPATIAL DISTRIBUTION AND SOURCE IDENTIFICATION OF HEAVY METAL POLLUTION IN URBAN RIVER SEDIMENTS: A CASE STUDY FROM THE ACAI RIVER, JAYAPURA, PAPUA
Get PDFThe Acai River is a river that flows through densely populated areas, from households and salons to small industries such as tofu and tempeh factories. The community's waste disposal into the river pollutes the river. Studies and monitoring of river quality, especially in Indonesia, are still dominated by examining pollutant levels in river water. However, sediment is also important for in-depth study. This study aims to examine the spatial distribution of heavy metals in sediments in the Acai River located in the urban area of Jayapura, Papua Province. Sediment samples were taken from five locations representing areas with different anthropogenic activities, such as dense settlements, home industries, and small business areas. Then, the samples were dried by placing them in an oven at 100°C. Laboratory analysis was conducted to determine heavy metal levels using the XRF (X-ray Fluorescence) method. Results showed the highest Zn concentration reached 102.1 ppm in the downstream location, while Cr and Ni also showed significant accumulation at certain points. The distribution of heavy metal levels did not show a linear pattern along the river flow, indicating local contributions from human activities. These findings confirm that heavy metal pollution in urban rivers is more influenced by local inputs than by the river flow itself
APLIKASI ECO-ENZYME DAN BIOCHAR TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BAWANG MERAH (Allium cepa L. var. aggregatum)
Get PDFThe increase in shallot production is not followed by an increase in productivity. In this regard, productivity needs to be increased through fertilization using eco enzyme organic fertilizer and biochar which contain many important nutrients for soil fertility. This research used a Randomized Block Design (RBD) arranged factorially and had three replications. The first factor was the addition of Eco enzyme consisting of 3 levels, namely E0 = without addition of eco-enzyme, E1 = addition of 10 ml/l eco-enzyme, and E2 = addition of 20 ml/l eco-enzyme. The second factor was the concentration of biochar with 3 doses, namely B0 = without addition of biochar, B1 = addition of 15 tons/ha biochar, and B2 = addition of 20 tons/ha biochar. Some of the variables observed were plant height, number of leaves, diameter of tubers per cluster, number of tubers per cluster, wet weight of tubers, and dry weight of tubers. The results showed that the application of eco-enzyme affected the growth parameters of plant height and number of leaves as well as the results of dry weight of tubers per clump. The application of biochar affected the observation parameters of tuber diameter per clump, number of tubers, wet weight of tubers, and dry weight of tubers. The combination of eco-enzyme and rice husk biochar treatments has not shown a significant interaction effect on the growth and yield of shallots.Keywords: Shallots, Eco-enzyme, Biochar, Rice hus
Analysis of Employee Well-being among Part-Time Student Workers in Micro, Small, and Medium Enterprises (MSMEs) based on Demographic Characteristics
Get PDFThis study aims to describe the demographic characteristics and the level of employee well-being (EWB) among university students working part-time in Micro, Small, and Medium Enterprises (MSMEs), as well as to analyze the relationship and influence of demographic variables on the three core dimensions of EWB: Life Well-being (LWB), Workplace Well-being (WWB), and Psychological Well-being (PWB). Using a quantitative approach, data were collected from 496 respondents selected through purposive sampling. The data were gathered via an online questionnaire and analyzed using descriptive statistics, Pearson correlation, and multiple linear regression. The results show that many respondents were female, 21 years old, enrolled in public universities, in their final semester, and working in the small-scale food and beverage sector. Overall, EWB levels were relatively high, particularly in the WWB and PWB dimensions, while LWB was at a moderate level. Age, type of university, and semester showed significant but weak relationships and influences on certain dimensions of well-being. These findings highlight the need for greater support to enhance the well-being of student workers in informal employment settings