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Penampilan Karakter Morfologi Enam Kultivar Unggul Kedelai pada Budidaya Sistem Hidroponik
Full text linkIn order to meet national soybean needs, soybean production must be increased. The use of quality seeds in terms of viability and vigor is one way to increase production results. Meanwhile, soybean seed production at the farmer level is carried out the same as soybean production for consumption, whereas seeds harvested for seeds must have special criteria such as water content, uniformity of seed size, and seeds must be free from disease contamination. One way to improve seed quality is to plant soybeans in a controlled environment. The technology developed in this study is the hydroponic system. The purpose of this study was to observe the morphological appearance of six superior soybean cultivars with hydroponic planting. This study was conducted in a Green House with a DFT hydroponic system installation. The cultivars tested were Grobogan, Anjasmoro, Deja 2, Dering 1, Gepak Kuning, and Dega 1. The results showed that each cultivar showed a different appearance in each observed variable. The Gepak Kuning and Dering 1 cultivars showed good performance on average in plant height, stem diameter, and seed weight. These cultivars have shown their ability to adapt to hydroponic planting systems to improve the quality of soybean seeds.
Dalam upaya memenuhi kebutuhan kedelai nasional, produksi kedelai harus ditingkatkan. Pemakaian benih yang bermutu dalam hal viabilitas dan vigor menjadi salah satu cara untuk meningkatkan hasil produksi. Sedangkan produksi benih kedelai ditingkat petani dilakukan sama seperti produksi kedelai untuk konsumsi, padahal biji yang dipanen untuk benih harus memiliki kriteria khusus misalnya kadar air, tingkat keseragaman ukuran biji, dan biji harus terbebas dari kontaminasi penyakit. Salah satu cara untuk meningkatkan kualitas benih adalah dengan menanam kedelai di lingkungan yang terkendali. Teknologi yang dikembangkan dalam penelitian ini adalah dengan system hidroponik. Tujuan penelitian ini adalah melihat penampilan morfologi enam kultivar unggul kedelai dengan penanaman secara hidroponik. Penelitian ini dilakukan di Green House dengan instalasi hidroponik system DFT. Kultivar yang diuji yaitu Grobogan, Anjasmoro, Deja 2, Dering 1, Gepak kuning, dan Dega 1. Hasil penelitian menunjukkan bahwa setiap kultivar menunjukkan penampilan yang berbeda pada setiap variable yang diamati. Kultivar Gepak Kuning dan Dering 1 rata-rata menunjukkan penampilan baik pada tinggi tanaman, diameter batang, dan bobot biji. Kultivar-kultivar tersebut mampu beradaptasi pada system penanaman secara hidroponik untuk peningkatan kualitas benih kedelai
PENDUGAAN LUAS HUTAN KOTA IDEAL PADA SETIAP KECAMATAN DI KABUPATEN SUBANG BERDASARKAN KEBUTUHAN OKSIGEN
Full text linkUrban development often overlooks the need to ensure good environmental quality. One of the fulfillments of environmental quality is the high oxygen levels in the air. This can be fulfilled by the existence of urban forests in urban areas with an ideal area. This can be done if there is a study on the oxygen needs of urban residents and the ability of urban forests to produce oxygen. The area is compared with the ideal area according to laws and regulations. This study aims to estimate the ideal area of urban forests in each sub-district in Subang Regency. Oxygen needs are calculated based on the oxygen needs of residents and motorized vehicles. . The calculation of oxygen needs considers the total population and the number of vehicles, with the latter estimated using the proportional distribution of vehicle types identified at specific location. Determination of the ideal area of urban forests is calculated using the Gerarkis method. The results of the study showed that the ideal area of urban forests in Subang Regency was 14,965.98 ha, still below the minimum of 10% of its area (21,655.5 ha). A total of 27 sub-districts in Subang Regency showed that the need for the ideal area of urban forests was still below the minimum of 10% of its area. Meanwhile, Subang District, Pagaden District, and Sukasari District are areas that require urban forest area of more than 10% of their area
Isothermic Adsorption Study of Nitrate Ion Adsorption in Bioethanol Waste Using Quaternary Ammonium Polymer
Full text linkThe global shift towards renewable energy sources has led to a significant increase in bioethanol production, particularly from sugar mills. Despite being an environmentally friendly alternative to fossil fuels, bioethanol production produces large amounts of waste containing dangerous contaminants such as nitrate ions (NO₃⁻). These contaminants pose severe environmental and health risks, including water pollution and eutrophication. This study explores the use of ammonium polymer as an adsorbent and the influence of pH in the adsorption process as a promising technique for removing nitrate ions from bioethanol waste. Based on the analysis that has been carried out, the optimal pH for adsorption of nitrate ions is around 9, where the removal efficiency (%RE) reaches 98.43% and the adsorption capacity (Qe) is 24.86 mg/g. These experiments show that the Freundlich model, with a heterogeneity factor (n) of 1.0947 and a Freundlich constant (KF) of 1.92 x 10³ units, provides the best fit to the adsorption data, indicating a heterogeneous adsorption process with a strong affinity for nitrate ions
KAJIAN ETNOBOTANI PEMANFAATAN TANAMAN PADA UPACARA ADAT OLEH MASYARAKAT DI KAMPUNG ADAT PULO, DESA CANGKUANG, KABUPATEN GARUT
Full text linkTraditional ceremonies are one of the traditions that are still carried out by the people of Kampung Adat Pulo which is located in Cangkuang Village, Leles District, Garut Regency, West Java Province. Traditional ceremonies carried out by the people of Kampung Adat Pulo include; 7 Bulanan, bidang pertanian; Mitembeyan, Hajat panen, Niiskeun pare; and Ngamandikeun Benda Pusaka. The Pulo Traditional Village community uses several plants during these traditional ceremonies. This research aims to find out and collect data on the types of plants used in carried out traditional ceremonies and to find out how to use the plants used in carried out traditional ceremonies in the Pulo Traditional Village. This research uses qualitative methods with field surveys and interviews through purposive sampling as well as quantitative methods to calculate data obtained in the field used the RFC (Relative Frequency of Citation) and ICF (Informant Consensus Factor) formulas. The informants obtained were 11 people with the results showed 14 species with the highest RFC value of 0.9 and the highest ICF value of 0.60
Effect of Nipah Biochar Pyrolysis Temperature on Composting Pineapple Waste
Full text linkThe accumulation of organic waste, such as pineapple peels, requires innovative and sustainable management approaches. Biochar, a carbon-rich material derived from pyrolysis, has been identified as a promising bulking agent to improve composting efficiency. This study investigated the effect of nipah biochar produced at different pyrolysis temperatures (350°C and 450°C) on pineapple peel composting. The characteristics of the biochar were analyzed using XRD and SEM to determine its mineral composition and pore structure, while the composting efficiency was evaluated by measuring pH, moisture retention, and nutrient content. The results showed that the biochar produced at 450°C had a more stable mineral composition—such as graphite, gamma alumina, and quartz—and higher porosity compared to the biochar at 350°C. During the composting process, the 450°C biochar significantly improved pH regulation to the optimal range of 6-7, moisture retention by 50-60%, and compost quality. The decomposition process was also faster, producing compost with higher nitrogen content and C/N ratio compared to the control without biochar. These findings highlight the potential of nipah biochar at high pyrolysis temperatures as an effective bulking agent for sustainable organic waste management
KARAKTERISTIK SOSIAL EKONOMI NELAYAN TRADISIONAL PANTAI UTARA JAWA BARAT DAN DAERAH KHUSUS JAKARTA
Full text linkMasyarakat yang tinggal di wilayah pulau-pulau kecil dan pesisir pantai umumnya mengandalkan hidupnya dari hasil laut, baik sebagai nelayan, buruh nelayan, ataupun jasa wisata bahari. Pekerjaan masyarakat pesisir seperti sebagai nelayan merupakan warisan dari orang tua mereka. Ketergantungan terhadap sumberdaya kelautan sangat tinggi, dengan keterbatasan teknologi penangkapan yang terbatas, menyebabkan hasil yang diperoleh tidak optimal. Penghasilan dari melaut yang kadang-kadang tidak menentu ini menjadi masalah serius bagi masyarakat nelayan dalam mencapai kesejahteraan. Pendapatan yang lebih kecil dibanding dengan pengeluaran menjebak masyarakat kedalam kubangan kemiskinan. Tujuan dan penelitian ini adalah untuk menggambarkan karakteristik masyarakat pesisir dari aspek sosial ekonomi masyarakat pesisir DKI Jakarta dan Pantura Jawa Barat. Metode analisis data yang digunakan adalah metode analisis statistik deskriptif. Hasil penelitian menunjukkan bahwa sebagian besar nelayan di DKI Jakarta dan Pantura Jawa Barat adalah nelayan tradisional. Tingkat pendidikan nelayan generasi saat ini relatif lebih tinggi dibandingkan dengan generasi sebelumnya maksimal tamat SD, sedangkan nelayan generasi berikutnya akan lebih baik lagi minimal tamat SLTA. Keterbatasan lapangan kerja bari masyarakat pesisir menyebabkan mereka terpaksa menjadi nelayan yang hanya bermodal fisik, meski mereka sadar risiko sebagai nelayan sangat besar. Bagi nelayan yang tidak punya modal sendiri untuk membeli armada dan alat tangkap untuk melaut, terpaksa bergantung pada tengkulak sebagai sumber permodalan, dengan alasan proses lebih mudah dan cepat
DIVERSITY OF MIGRATORY BIRDS IN SEVERAL TYPES OF WETLANDS (CASE STUDY IN SUMBERNADI VILLAGE, SOUTH LAMPUNG REGENCY)
Full text linkBird migration is a natural phenomenon that plays a crucial role in maintaining global ecosystem balance. One of the most notable groups involved in this phenomenon is migratory waterbirds, which depend on wetlands as resting, feeding, and breeding sites during their migration period. This study aims to analyze the ecological indices of migratory birds, including species diversity, richness, evenness, abundance, and dominance, across various wetland types in Sumbernadi Village, South Lampung Regency. Data were collected from November to December 2024 using the point count method at six observation points representing four wetland types: mangrove, mudflat, fishpond, and rice field. The results recorded nine migratory bird species from three families, with the highest diversity observed in mudflats (H' = 1.958) and the lowest in mangroves (H' = 0.637). The Scolopacidae family dominated in terms of both abundance and distribution. Environmental factors, including food availability, vegetation structure, and human disturbance, influenced differences in diversity among habitats. These findings suggest that the wetlands in Sumbernadi Village provide vital ecological habitats for migratory birds. Therefore, sustainable management and conservation efforts are crucial for preserving the environmental functions of these wetlands and supporting the continuity of migratory bird populations in the region
The Quality Bonding of Sembilang Bamboo (Dendrocalamus giganteus Munro) Using Isocyanate Adhesive
Full text linkThe increasing demand for wood-based products is not balanced by a sufficient timber supply, creating a need for alternative materials such as bamboo. Dendrocalamus giganteus Munro (bamboo sembilang) is a promising substitute; However, its inherent limitations require modification, particularly through lamination technology. Adhesion plays a crucial role in this process as it strongly affects surface wettability and bonding strength.One important factor in the conversion of bamboo into laminated boards is the adhesion process, as it significantly affects the wettability properties and bond strength. This study aimed to evaluate the wettability characteristics of bamboo sembilang and its bonding strength with isocyanate adhesive, considering the effects of surface orientation, adhesive spread rate, and pressing time. Wettability was assessed using the contact angle method and the Corrected Water Absorption Height (TAAT), while bonding strength was tested under dry and wet conditions. Results showed an average contact angle of 33,40° on the inner surface and 35,14° on the outer surface of bamboo, with a TAAT value of 103.51 mm, indicating good wettability. The average dry bonding strength was 68.4 kg/cm², meeting the JPIC (2007). These findings demonstrate that bamboo sembilang has strong potential as a raw material for laminated boards with reliable bonding performance when using isocyanate adhesive
Strategi Pengembangan Pemasaran Kopi Robusta di Unit Usahatani Agro Semesta
Full text linkThe problem faced by coffee farmer groups in Tabanan Bali is marketing. This is also experienced by the Agro Semesta Farming Business Unit (UUT) located in Pajahan Village, Pupuan District, Tabanan Regency. They still have difficulty in marketing their flagship product, namely Sobean Coffee. This study aims to identify factors in the internal and external environment in marketing development, as well as to find alternative marketing development strategies and priority strategies needed by UUT Agro Semesta in developing Sobean Coffee marketing. The analysis tools used in this study include the IFAS, EFAS, IE, SWOT, and QSPM matrices. The results of the study showed that there were six strength factors, namely Superior Brand, Characteristic dark chocolate and fruity flavors, Red Pick and Honey process, Coffee processing facilities and Assistance from the Kopernik Subak Abian Amertha Karya Foundation as a coffee supplier and five weakness factors, namely Lack of human resources in production and marketing, Marketing is still by word of mouth, Decrease in quality after 3 months, Difficulty finding distributors and Not having a production permit, and four opportunity factors, namely Increasing coffee drink trends, Increasing coffee demand, Export of coffee to international markets and E-commerce and social media and three threat factors, namely Lack of interest in village youth, Relatively expensive prices and Lack of extension workers. The results of the IFAS and EFAS matrix analysis on the SWOT diagram, UUT Agro Semesta has quite strong internal strength but faces quite serious threats, this encourages UUT Agro Semesta to seek alternative strategies that are diversified. There are nine alternative strategies generated from the SWOT matrix, and the results of the QSPM matrix show that creating a UUT development program with the Regional Government and the Kopernik Foundation to attract the interest of village youth is a priority strategy for UUT Agro Semesta in developing Sobean Coffee marketing.
Permasalahan yang dihadapi kelompok petani kopi di Tabanan Bali adalah soal pemasaran. Hal ini juga dialami oleh Unit Usaha Tani (UUT) Agro Semesta yang berlokasi di Desa Pajahan, Kecamatan Pupuan, Kabupaten Tabanan. Mereka masih mengalami kesulitan dalam memasarkan produk andalannya, yaitu Kopi Sobean. Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor pada lingkungan internal dan eksternal dalam pengembangan pemasaran, serta mencari alternatif strategi pengembangan pemasaran dan strategi prioritas yang diperlukan oleh UUT Agro Semesta dalam mengembangkan pemasaran Kopi Sobean. Alat analisis yang digunakan dalam penelitian ini mencakup matriks IFAS, EFAS, IE, SWOT, dan QSPM. Hasil penelitian menunjukkan bahwa terdapat enam faktor kekuatan yaitu Brand unggulan, Ciri khas rasa dark chocolate dan fruity, Petik merah dan Honey process, Fasilitas pengolahan kopi dan Bantuan dari Yayasan Kopernik Subak Abian Amertha Karya sebagai pemasok kopi dan lima faktor kelemahan yaitu Kurangnya SDM dalam produksi dan pemasaran, Pemasaran masih dari mulut ke mulut, Penurunan kualitas setelah 3 bulan, Kesulitan mencari distributor dan Tidak memiliki izin produksi, serta empat faktor peluang yaitu Trend minuman kopi yang meningkat, Permintaan kopi yang meningkat, Ekspor kopi pasar internasional dan E-commerce dan media sosial dan tiga faktor ancaman yaitu Kurangnya minat pemuda desa, Harga relatif mahal dan Kurangnya tenaga penyuluh. Hasil analisis matriks IFAS dan EFAS pada diagram SWOT, UUT Agro Semesta memiliki kekuatan internal yang cukup kuat namun menghadapi ancaman yang cukup serius, hal ini mendorong UUT Agro Semesta untuk mencari alternatif strategi yang bersifat diversifikasi. Ada sembilan alternatif strategi yang dihasilkan dari matriks SWOT, dan hasil matriks QSPM menunjukkan bahwa membuat program pengembangan UUT dengan Pemda dan Yayasan Kopernik untuk menarik minat pemuda desa menjadi strategi prioritas untuk UUT Agro Semesta dalam mengembangkan pemasaran Kopi Sobean
Synthesis of Iron Nanoparticle Using Polyphenol Bioreductor from Red Pomegranate Extract
Full text linkNano zero valent iron (nZVI) has been utilized for environmental remediation and raw water treatment. The NaBH4 reductor, utilized in iron nanoparticle synthesis, yielded easily oxidized and agglomerated material. Using polyphenol as a bioreductor resulted in a more stable material. The purpose of this research is to synthesize and compare quality of nZVI utilizing NaBH4 (C-nZVI) to nZVI utilizing polyphenol from spent tea and the peel of pomegranate (G-nZVI) and determine the efficiency of pomegranate peel G-nZVI in reducing dissolved organic matter. The iron nanoparticle was synthesized by reducing FeCl3 salt in a water solvent. C-nZVI material was generated as a black powder, whereas G-nZVI materials were black flakes. The band gap energy values of these three materials indicate that they have reached the nanoscale. All three materials had entire nZVI unitary groups based on its FTIR spectrums. The X-ray diffractogram did not clearly show the core of the phase crystals. The G-nZVI from the peel of pomegranate had a greater distribution and mean material size than the spent tea G-nZVI. Both zeta potentials G-nZVI demonstrate that the materials were stable in the aqueous medium. After two hours of incubation, G-nZVI pomegranate peel at room temperature and dark conditions achieved an optimal dissolved organic matter breakdown rate of 98%