Scientific Journals of Bogor Agricultural University
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Pemanfaatan Limbah Ampas Kopi dan Feses Domba dari PT Agro Apis Palacio sebagai Pupuk Organik Padat Berkualitas SNI: Utilization of Coffee Grounds and Sheep Feces Waste from PT Agro Apis Palacio as Solid Organic Fertilizer at SNI Quality
No full textLimbah ampas kopi dan feses domba semakin meningkat setiap tahunnya. Salah satu alternatif mengurangi limbah tersebut dengan pembuatan pupuk organik padat sebagai penyeimbang penggunaan pupuk kimia. Penelitian ini bertujuan mengetahui potensi ampas kopi dan feses domba sebagai produk pupuk organik padat serta mengetahui kualitas pupuk yang dibuat. Metode yang digunakan dalam pembuatan pupuk adalah fermentasi aerob. Kemudian kualitas pupuk diuji mengacu pada SNI 7763:2018 dan data yang diperoleh dianalisis menggunakan ANOVA. Pemilihan bahan organik dan kondisi optimal penting dalam pembuatan pupuk organik. Hasil evaluasi ampas kopi dan feses domba memiliki kandungan C-organik sebesar 79,20% dan 73,30%, serta rasio C/N yang seimbang yaitu 20,06 dan 17,64. Pupuk yang dihasilkan berkualitas baik dan memiliki nutrisi hara makro dan mikro serta kadar air, bahan ikutan, pH, C-organik, dan rasio C/N memenuhi persyaratan SNI 7763:2018. Analisis statistik menggunakan ANOVA satu arah menunjukkan semua perlakuan berbeda signifikan dengan formulasi terbaik adalah FPOP3 yaitu penambahan 1:1 EM4 10% v/v dan larutan ragi tape 10% b/v.
Kata Kunci: Ampas Kopi, Fermentasi, Feses Domba, Pupuk Organik Pada
Evaluasi Pemberian Ransum Ayam Sentul Di Dinas Ketahanan Pangan Pertanian Dan Perikanan Kota Tasikmalaya: Evaluation of Sentul Chicken Ration at The Tasikmalaya City Agriculture and Fisheries Food Security Office
No full textPemberian pakan pada ayam sentul merupakan salah satu faktor penting dalam meningkatkan produktivitas dan kesehatan ternak. Kota Tasikmalaya memiliki ketersediaan pakan alternatif seperti azolla dan maggot sangat melimpah sehingga menjadikannya potensi besar untuk dimanfaatkan secara optimal. Penelitian dilakukan di Dinas Ketahanan Pangan, Pertanian, dan Perikanan Kota Tasikmalaya dengan melibatkan 750 ekor ayam sentul selama 11 minggu, dari 5 Agustus hingga 5 November 2024. Data yang dikumpulkan mencakup identifikasi pakan, jumlah pakan yang diberikan, serta bobot harian ayam. Setiap minggu, bobot badan ayam ditimbang secara acak pada 10 ekor sampel. Pakan campuran diberikan sesuai tabel harian yang telah ditentukan, dan bobot ayam kembali ditimbang di akhir minggu untuk memastikan konsistensi data. Perhitungan pertambahan bobot badan dan pertambahan bobot badan harian dilakukan untuk menilai pertumbuhan ayam. Hasil penelitian menunjukkan kadar serat dan fosfor dalam pakan masih di bawah kebutuhan harian, sementara kadar energi dan protein sudah mencukupi. Ayam yang diberi pakan azolla, maggot, dan pakan komersil memiliki Body Condition Score rata-rata 4, menunjukkan kondisi tubuh yang baik. Dengan demikian, model pakan ini cukup optimal, meskipun keseimbangan nutrisinya masih perlu penyempurnaa
Retired But Not Tired: Insights for Global Application from Skill Acquisition among Retirees in Nigeria
Get PDFRetirement presents economic, social, and psychological challenges, particularly in regions with weak social welfare systems. It is therefore necessary to identify practical strategies that ensure sustainable post-employment living.This study examines the role of skill acquisition in promoting sustainable living among retirees in Ondo West Local Government Area, Nigeria. A descriptive survey research design was employed, with data collected from 38 purposively selected retirees through a structured questionnaire comprising 40 items. The instrument contained sections on demographic characteristics, engagement in skill acquisition, perceived benefits and barriers, and strategies for enhancement. Descriptive and inferential statistics, including mean, variance, and t-tests, were used for analysis. Findings reveal that retirees recognize skill acquisition as a viable strategy for ensuring financial independence, social engagement, and personal fulfillment, with notable gender differences in skill preferences. However, barriers such as financial constraints, lack of awareness, and insufficient institutional support were identified. The study recommends early pre-retirement training, increased financial support, and community-driven interventions to enhance retirees’ economic stability. Although localized in Ondo West, the study provides insights with wider relevance for sustainable retirement planning in developing economie
The Effects of Objective Economic Pressure and Coping Strategies on Fisherman Family Vulnerability
Get PDFFisherman families experience objective economic pressure due to unstable income, thus requiring coping strategies to avoid family vulnerability. This study aims to analyze the influence of objective economic pressure and coping strategies on the vulnerability of fisherman families. The study employed a cross-sectional design involving 105 intact fisherman families with school-age children in Muara Angke Fishing Village, North Jakarta, selected through purposive sampling. The data were analyzed using descriptive statistics, correlation analysis, and path analysis. The correlation analysis showed that the husband’s years of education were significantly and negatively related to objective economic pressure. Per capita income was significantly and negatively associated with objective economic pressure, coping strategies, and family vulnerability. Family size was significantly and positively associated with objective economic pressure. Objective economic pressure was significantly and positively associated with coping strategies and family vulnerability, while coping strategies were significantly and negatively associated with family vulnerability. The path analysis revealed that per capita income had a significant direct negative effect on objective economic pressure. Furthermore, per capita income had significant indirect negative effects on coping strategies and family vulnerability through objective economic pressure. Objective economic pressure had significant positive direct effects on both coping strategies and family vulnerability. Based on the findings, fisherman families are recommended to seek additional income sources, maintain assets, save money, avoid conflicts, and share household responsibilities among family member
Kebijakan Gula dan Bioetanol: Perpres 40/ 2023 Langkah Nyata Ketahanan Pangan dan Energi
Get PDFPeraturan Presiden Nomor 40 Tahun 2023 tentang Percepatan Swasembada Gula Nasional dan Penyediaan Bioetanol sebagai Bahan Bakar Nabati merupakan langkah strategis pemerintah untuk memperkuat ketahanan pangan dan energi nasional. Kebijakan ini bertujuan mengurangi impor gula, meningkatkan efisiensi industri gula, dan memperluas produksi bioetanol berbasis tebu. Pemerintah menargetkan pembukaan lahan baru, peningkatan rendemen, dan revitalisasi pabrik gula. Namun, pelaksanaannya masih menghadapi sejumlah tantangan, seperti keterbatasan pendanaan, konflik tata ruang, birokrasi perizinan, dan risiko sosial-lingkungan. Keberhasilan kebijakan ini bergantung pada koordinasi lintas sektor, dukungan investasi, serta partisipasi aktif petani dan industri dalam sistem agribisnis yang berkelanjutan
Akselerasi Pembangunan Kawasan Transmigrasi yang Berkelanjutan melalui Kolaborasi Kelembagaan Multipihak
Get PDFTransformasi Transmigrasi menghadapi kendala fragmentasi kelembagaan ekonomi dan ketiadaan hub koordinasi di tingkat tapak kawasan. Kerja kelembagaan secara parsial dan keterbatasan sumber daya manusia (SDM) menghambat sinergi multisektor dan pencapaian skala ekonomi komoditas unggulan. Tulisan ini merekomendasikan kebijakan tatakelola kelembagaan yang terfokus untuk mengakselerasi pembangunan kawasan transmigrasi. Solusi kunci yang diusulkan adalah pembentukan lembaga ekonomi kawasan (single hub) yang digerakkan wirausaha sosial (social entrepreneur) dan pendamping professional dalam ekosistem kolaborasi multipihak (Pentahelix). Strategi ini akan mengefisiensi rantai nilai dan mentransformasi kawasan transmigrasi menjadi pusat ekonomi baru yang terintegrasi dalam rantai pasok industri, inklusif bagi petani kecil dan pemuda, serta berkelanjutan melalui pengelolaan sumber daya berbasis nilai tambah
Exploring Key Themes in Halal Tourism Studies: A Systematic Literature Review Approach
Get PDFHalal tourism has grown rapidly over the past two decades, becoming a strategic pillar of the global industry. The expansion of the Muslim travel market, reaching millions of international arrivals annually, underscores the growing need for destinations, products, and services consistent with Islamic values. Therefore, this study aims to identify major themes and gaps in the halal tourism literature through a Systematic Literature Review (SLR) based on PRISMA guidelines. Using the keyword “halal tourism” in the Scopus database (2014–2025), a total of 659 articles were initially retrieved, with 31 fulfilling the final inclusion criteria after screening for access, language, and relevance. The results showed that Indonesia dominates halal tourism literature (28 articles), with case studies and surveys being the most common methods. Thematically, studies cluster into nine categories, namely Muslim tourist behavior and loyalty, policy and governance, branding and promotion, religious moderation and local wisdom, destination strategies, halal food consumption, technology and digitalization, literacy and social capital, as well as certification. Previous studies have largely focused on tourist behavior, while implementation and certification remain underexplored. In general, halal tourism is a multidimensional field integrating culture, governance, branding, and technology beyond mere compliance with Islamic law. Future studies should focus on practical implementation, certification systems, and digital transformation. Strengthening these areas will enhance competitiveness, ensure inclusivity for Muslim travelers, and support the sustainability of halal tourism as a driver of equitable growth in the global landscape
Bird Diversity and Existence at Pringtali Block: Implications for Conservation in Meru Betiri National Park, Indonesia
Get PDFMeru Betiri National Park (MBNP) is one of the conservation areas with an essential bird habitat in East Java. In the conservation monitoring and evaluation framework, we studied the diversity and existence of birds in the bird hotspot (Pringtali Block) as an implication for bird conservation in the MBNP. Bird observations were collected during January-February 2023 at the Pringtali Block using the point count method at six representative sites. The primary data recorded included bird species, abundance of each species, and frequency of encounters. Meanwhile, the secondary data were obtained from web queries covering bird conservation status and distribution through https://www.iucnredlist.org/. Data analysis was conducted in three stages: determining species composition, species diversity index (H\u27), and species existence value (Ef). The results recorded 70 bird species, consisting of 57 genera and 33 families, in the Pringtali Block of MBNP. The diversity index of birds was included in the high category (H\u27 = 3.31). The average existence value (Ef) of the bird is 48.57 or x̄=3 s, which are included in the medium category. This reveals that birds in the Pringtali block have important structural and functional values in the MBNP ecosystem. This value also illustrates the importance of the presence of a bird species in the ecosystem and represents the uniqueness of the bird species. The birds with the highest Ef values were the Javan Hawk-eagle Nisaetus bartelsi (86.67) and White-rumped Woodpecker Meiglyptes tristis (86.67). Both species have low frequencies, are an endangered category, and are endemic to Java. Therefore, conservation efforts associated with MBNP have been successful
Characteristics of Nitrogen-Fixing Bacteria Isolated from the Rhizosphere at Kaolin Lake, Belitung, Indonesia
Get PDFFormer kaolin mining has poor physical and chemical properties for plants. The low nutrient content makes difficult for plants to grow. Nitrogen (N2) is an important macronutrient for plants, but it can only be absorbed in the form of ammonium ions (NH4+) or nitrate ions (NO3-). Therefore, it is necessary to transform nitrogen, which is able to change the molecular form so that it can be absorbed by plants. The strategy that can be done is using nitrogen-fixing bacteria. This study aimed to explore and analyze the diversity of nitrogen-fixing bacteria based on 16S rRNA and nifH gene from the rhizosphere of the Kaolin Lake area. The method started with bacterial isolation from rhizosphere soil samples. Selected isolates were tested for ammonium content to determine the ability of isolates to fix nitrogen. In this study, 13 isolates had the ability to fix nitrogen, two of which had a high ammonium concentration, namely RBN 5.6, and RBA 2.3. The highest ammonium concentration was produced by isolate RBN5.6 amounting to 7.55 μg/ml. Based on 16S rRNA gene identification, isolate RBN5.6 was similar to Burkholderia cepacia and isolate RBA2.3 was similar to Bacillus aquimaris. Based on the detection of the nifH gene, isolate RBN5.6 was identified as a protein-encoding dinitrogenase reductase gene group cluster from the Stutzerimonas stutzeri
Pengaruh perbedaan waktu ekstraksi terhadap karakteristik kalsium Halimeda opuntia: The effect of different extraction time on the characteristics of calcium from Halimeda opuntia
No full textHalimeda opuntia adalah jenis alga hijau yang kaya akan kalsium karbonat. Metode ekstraksi kalsium dari H. opuntia terutama untuk durasi waktu ekstraksi masih belum optimal. Penelitian ini bertujuan untuk menentukan waktu ekstraksi terbaik kalsium dari H. opuntia melalui parameter kadar kalsium, warna, mikrostruktur, ukuran partikel, dan keberadaan gugus fungsi kimiawi. Metode yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) satu faktor, yaitu waktu ekstraksi 1, 2 dan 3 jam. Ekstraksi yang digunakan, yaitu sol gel dalam larutan HCl 1 N pada suhu 90°C. Parameter yang dianalisis meliputi rendemen, kadar kalsium, air, abu, protein, warna, ukuran partikel, mikrostruktur (SEM), dan gugus fungsi kimiawi (FTIR). Hasil penelitian menunjukkan bahwa waktu ekstraksi berpengaruh nyata terhadap rendemen, kadar kalsium, abu, lightness (L*), redness/greenness (a*), yellowness/blueness (b*), ΔE, dan whiteness index (WI). Perlakuan terpilih pada waktu ekstraksi 1 jam dengan kadar kalsium tertinggi, yaitu 30,79±0,56%. Rendemen, kadar air, abu dan protein perlakuan terbaik, yaitu 24,11±0,57%, 3,36±0,56%, 81,76±0,36%, dan 0,90±0,10%. Nilai L*, a*, b*, ΔE, dan WI berturut-turut adalah 83,83±0,65; 0,34±0,05; 8,84±0,21; 13,01±0,48; dan 84,29±0,65%. Waktu ekstraksi yang lebih lama meningkatkan rendemen kalsium namun terjadi degradasi serta warna yang makin menguning. Analisis mikrostruktur perlakuan ekstraksi 1 jam menunjukkan permukaan menyerupai bola yang terlihat kasar dan tidak menggumpal dengan ukuran partikel seragam 3,25 nm. Hasil analisis gugus fungsi menunjukkan keberadaan kalsium karbonat dalam spektra FTIR H. opuntia teridentifikasi pada gelombang 1.407,1 cm-1 dan 872,2 cm-1. Waktu ekstraksi 1 jam dinilai optimal untuk mengekstrak kalsium dari H. opuntia.Halimeda opuntia is a type of green algae that is abundant in calcium carbonate. The extraction process for calcium from H. opuntia, particularly regarding the extraction duration, has not yet been fully optimized. This study aims to determine the optimal extraction time for calcium from H. opuntia by evaluating parameters such as calcium content, color, microstructure, particle size, and the presence of chemical functional groups. The method used in this study was a completely randomized design (CRD) with a single factor: extraction time with three treatments (1, 2, and 3 hours). The sol-gel method was used for extraction. The parameters were analyzed for yield, calcium content, moisture, ash, protein, color, particle size, microstructure (SEM), and chemical functional groups (FTIR). The results indicated that extraction time significantly affected yield, calcium content, ash content, lightness (L*), redness/greenness (a*), yellowness/blueness (b*), ΔE, and whiteness index (WI). The optimal extraction time was determined to be 1 hour, producing the highest calcium content of 30.79±0.56%. The best treatment also yielded values of 24.11±0.57% for yield, 3.36±0.56% for moisture, 81.76±0.36% for ash, and 0.90±0.10% for protein. The color parameters L*, a*, b*, ΔE, and WI were recorded as 83.83±0.65, 0.34±0.05, 8.84±0.21, 13.01±0.48, and 84.29±0.65, respectively. Prolonged extraction times increased the yield but caused a decline in calcium content and resulted in a more pronounced yellowish coloration. The sample that was extracted for one hour had a rough, spherical surface with particles that were not clumped together and were all the same size, 3.25 nm. FTIR analysis showed that calcium carbonate was present, with signature absorption peaks found at 1,407.1 cm⁻³ and 872.2 cm⁻³. We concluded that an extraction time of 1 hour is sufficient for efficient calcium extraction from H. opuntia