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Thomas Langur (Presbytis thomasi) Daily Movement in Jantho Natural Reserve, Aceh Province
Get PDFThomas langur (Presbytis thomasi) is an endemic primate to Aceh and North Sumatra. These primates have a local name, “Kedih.” Forest fires and forest functions conversion into oil palm plantations are pressure on their habitat and have decreased wild populations in nature. As arboreal animals, their movements depend heavily on the connectivity of vegetation. Comprehensive research is needed to obtain horizontal and vertical daily movement data of the thomas langur. This study used GPS to take coordinates, a camera to document Thomas langur and its food trees, and Thomas langur as a research object. The data recorded includes the coordinates of each forage tree, the type of forage tree, and the height of the canopy strata used by Thomas langur for foraging. The hardwood movement data was plotted on ArGis 10.1 to get the horizontal hardness movement area. Tree height data was obtained by measuring the tree height where Thomas langur stopped to look for food. Kedih movements to look for food are carried out daily from morning to evening. The results showed that the short length of movement was highly depend on the availability of forage trees. The denser the forage trees, the shorter the daily activities of Thomas langur. This daily movement can be done horizontally and vertically. Horizontally, Thomas langur moved to follow the forage trees, and vertically, Thomas langur moved by utilizing the height of the forage trees. Horizontally, Thomas langur moved 144.92 m in the rehabilitation block and 62.30 m in the protection block. The Thomas langur home ranged in the rehabilitation block is 27 ha, and 25 ha in the protected block. Vertically, Kedih in the rehabilitation blocks and protected blocks moved to trees with a height of 11-20 m, as much as 49%
PENGARUH MODAL KERJA TERHADAP PENDAPATAN USAHA PADA UMKM CILENDEK TIMUR
Get PDFPenelitian ini berujuan untuk mengetahui seberapa besar pengaruh modal kerjaterhadap UMKM di Cilendek Timur. Dalam kegiatan penelitian, khususnya metodesurvey yang menggunakan kuesioner dengan isi sejumlah pertanyaan yang diukurdengan skalaLikert Penelitian ini berlangsung dari Bulan September 2018 – Januari2019. Metode yang digunakan adalah uji beda dengan membedakan pendapatansebelum dan sesudah diberi bantuan pinjaman modal. Berdasarkan hasil penelitianmelalui uji beda dengan analisa data prepaired sampel t-test maka hasilnya adalahada pengaruh signifikan antara pendapatan rata-rata usaha UMKM tahun 2015 -2017 dengan adanya penambahan Modal pada tahun 2018. Berdasarkan hasilpenelitian melalui uji beda dengan analisa data prepaired sampel t-test makahasilnya adalah ada pengaruh signifikan antara pendapatan rata-rata usaha UMKMtahun 2015 -2017 dengan adanya penambahan Modal pada tahun 2018
Pengaruh Macam Pupuk Hijau Dan Tingkat Dekomposisi Terhadap Pertumbuhan Bibit Kelapa Sawit
Get PDFKetersediaan hara pada media tanam akan menentukan pertumbuhan dan perkembangan bibit. Pemberian hara dapat dilakukan menggunakan pupuk organik, salah satunya adalah pupuk hijau. Penelitian ini bertujuan untuk mengetahui pengaruh macam pupuk hijau dan tingkat dekomposisi terhadap pertumbuhan bibit kelapa sawit di pre nursery, serta mengetahui macam pupuk hijau dan tingkat dekomposisi yang memberikan pengaruh terbaik terhadap pertumbuhan bibit kelapa sawit di tahap pre nursery. Penelitian dilakukan di bulan Januari sampai dengan Mei 2022 yang dilaksanakan di Kebun Percobaan (KP) Kalikuning, Yogyakarta. Penelitian dilaksanakan dengan metode percobaan satu faktor dengan 13 perlakuan yang disusun dalam Rancangan Acak Lengkap. Perlakuan yang diberikan yaitu Pupuk Kimia NPK dan Urea (P0); kompos daun lamtoro 0 hari (P1), 5 hari (P2), 10 hari (P3), 15 hari (P4); kompos daun trembesi 0 hari (P5), 5 hari (P6), 10 hari (P7), 15 hari (P8); serta kompos daun mucuna 0 hari (P9), 5 hari (P10), 10 hari (P11), dan 15 hari (P12). Ulangan untuk masing-masing perlakuan adalah 5 kali. Penelitian menunjukkan hasil bahwa kompos daun lamtoro dengan 5 hari dekomposisi memberikan pengaruh rerata tertinggi terhadap parameter luas daun dan berat segar akar. Perlakuan kontrol NPK dan Urea menunjukkan hasil yang tidak berbeda nyata terhadap semua parameter pertumbuhan, yang berarti penambahan pupuk hijau dengan semua tingkat dekomposisi mampu menggantikan peran pupuk anorganik.
The availability of nutrients in the planting medium will determine the growth and development of seedlings. Providing nutrients can be done using organic fertilizer, one of which is green fertilizer. This research aims to determine the effect of types of green manure and decomposition degree on the growth of oil palm seedlings in the pre-nursery stage, as well as finding out the type of green manure and level of decomposition that have the best influence on the growth of oil palm seedlings in the pre-nursery stage. The research was carried out from January to May 2022 at the Kalikuning Experimental Garden (KP), Yogyakarta. The research was carried out using a one-factor experimental method with 13 treatments arranged in a Completely Randomized Design. The treatment given is NPK and Urea (P0) Chemical Fertilizer; lamtoro leaf compost 0 days (P1), 5 days (P2), 10 days (P3), 15 days (P4); trembesi leaf compost 0 days (P5), 5 days (P6), 10 days (P7), 15 days (P8); as well as mucuna leaf compost for 0 days (P9), 5 days (P10), 10 days (P11), and 15 days (P12). Replication for each treatment was 5 times. The research showed that lamtoro leaf compost with 5 days of decomposition had the highest average effect on leaf area and root fresh weight parameters. The NPK and Urea control treatments showed results that were not significantly different for all growth parameters, which means that the addition of green fertilizer and decomposition degree were able to replace the role of inorganic fertilizer
PENERAPAN PEMBELAJARAN ACTIVE LEARNING MELALUI PEMANFAATAN MEDIA PEMBELAJARAN DIGITAL BERBASIS BUDAYA LOKAL
Get PDFRendahnya kemampuan literasi budaya siswa di UPT SDN Paterman 2 Modung, salah satunya dipengaruhi oleh keterbatasan kemampun guru dalam mendesain pembelajaran aktif yang terintegrasi budaya lokal setempat. Pelaksanaan Program Abdimas ini bertujuan untuk memberikan pelatihan terstruktur kepada guru melalui program pembelajaran active learning yang mengkolaborasikan budaya lokal tanean lanjhang dan Rokat Tase’ kedalam media pembelajaran digital. Selain itu, pelatihan bagi siswa dilakukan dengan menerapkan media pembelajaran digital berbasis budaya lokal, guna menumbuhkan kecakapan siswa akan liteasi budaya. Program abdimas ini dilaksanakan SDN Patereman 2 Modung. Berdasarkan hasil pelaksanaan kegiatan, respon guru sangat baik dilihat dari efektivitas program, kemenarikan program maupun keberlanjutan program. Sedangkan pembelajaran yang dilakukan kepada siswa mampu meningkatkan ketuntasan belajar siswa mencapai 78% tuntas secara klasikal. Oleh karena itu dapat disimpulkan jika program abdimas yang dilakukan dengan subjek sasaran siswa dan guru di UPTD SDN Patereman 2 efektif diterapkan
PRODUKTIVITAS PENEBANGAN POHON JATI (Tectona grandisL.f) MENGGUNAKAN CHAINSAW (Studi kasus: Trubusan Jati Unggul Nusantara di Kebun Percobaan Cogreg Universitas Nusa Bangsa)
Get PDFProduktivitas penebangan sangat penting diketahui agar dapat diperhitungkan potensi hutan yang akan dipanen dan juga untuk menghitung upah pekerja. Kelancaran kegiatan penebangan pohon dapat dipengaruhi oleh faktor waktu dan tenaga kerja. Tenaga kerja yang sudah terlatih dan memiliki pengalaman kerja yang luas sangat diperlukan untuk meningkatkan produktivitas kerja. Tujuan penelitian ini adalah untuk mengetahui tingkat produktivitas kerja penebangan pohon yang dinyatakan dalam m3/jam. Penelitian dilaksanakan di area tegakan Trubusan Jati Unggul Nusantara yang berada di Kebun Percobaan Universitas Nusa Bangsa yang berlokasi di Desa Cogreg, Bogor. Proses pengambilan data di lapangan dilakukan selama 3 hari waktu pengambilan sampel. Metode yang digunakan adalah dampak rendah lingkungan tetapi tebang habis, berapapun diameternya semua akan ditebang. Pengambilan sampel dilakukan secara purposive sampling, dimana sampel pohon yang diambil akan dikategorikan dalam beberapa kelas diameter, yaitu diameter > 10 cm; 10-15 cm; 15-20 cm dan diameter > 20 cm. Dari 4 kelas diameter tersebut, masing-masing sebanyak 5 %. Hasil penelitian menunjukkan bahwa diperoleh produktivitas penebangan pohon Jati menggunakan chainsaw pada grup Bogor sebesar 6,7660 m3/jam dan grup Lampung sebesar 7,5674 m3/jam. Sehingga diperoleh rata-rata produktivitas sebesar 7,1667m3/jam
The Relationship Between The Percentage of Solar Radiation Under The Shade of Stand and The Growth of Cardamom
Get PDFCardamom can live under the shade of stand, but require adequate shade for optimum growth. Therefore, this research aims to determine the relationship between the percentage of solar radiation under the shade of stand on the growth of cardamom, and to estimate the percentage of solar radiation that affects the optimum growth of cardamom. The research was conducted in 5 farmer-cultivated areas planted with cardamom in Tahura Wan Abdul Rachman. In each farmer's arable area, 3 plots of 5 m x 5 m were made, which were placed randomly to observe the growth of cardamom. The data collected includes: growth of cardamom, tree species that make up forest garden stands, solar radiation under the shade or in the open, air temperature, and humidity. The data were analyzed by quadratic regression at the 5% significance level. The results showed that the difference in the shade of stands had a significant effect on the growth of cardamom. All cardamom growth variables were significantly correlated with the percentage of solar radiation under the shade of stand. The optimal number of stems is 49.5 stems at a percentage of 63% solar radiation. The optimal plant height of 146.74 cm at a percentage of 67% solar radiation. The optimal number of leaves per clump is 235.296 leaves at 60% solar radiation percentage. The number of flower bunches per cluster is optimal as much as 23.4 bunches at the percentage of solar radiation 60.5 %. The optimal number of fruits per fruit bunch is 8.7 fruits at the percentage of solar radiation 56 %. Thus, cardamom plants will grow optimally under the shade of the standing canopy with a percentage of solar radiation from 56% to 67%.Keywords:  cardamom;  forest gardens;  growth;  shade; standABSTRAKHubungan Persentase Radiasi Matahari di Bawah Naungan Tajuk Tegakan dengan Pertumbuhan KapulagaKapulaga dapat hidup di bawah naungan tegakan, akan tetapi membutuhkan naungan yang memadai untuk pertumbuhan optimal. Oleh karena itu, penelitian bertujuan untuk mengetahui hubungan persentase radiasi matahari di bawah naungan tegakan kebun hutan dengan pertumbuhan kapulaga, serta mengestimasi persentase radiasi matahari yang berpengaruh terhadap pertumbuhan optimum kapulaga. Penelitian dilakukan di 5 areal garapan petani yang ditanami kapulaga dalam Tahura Wan Abdul Rachman. Data yang dihimpun meliputi: pertumbuhan kapulaga, jenis pohon penyusun tegakan kebun hutan, radiasi matahari di bawah naungan maupun di tempat terbuka, temperatur udara, dan kelembapan udara. Data dianalisis regresi kuadratik pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa perbedaan naungan tegakan kebun hutan berpengaruh nyata terhadap pertumbuhan kapulaga. Semua variabel pertumbuhan kapulaga berhubungan nyata secara kuadratik dengan persentase radiasi matahari di bawah naungan tegakan. Jumlah batang per rumpun yang optimal sebanyak 49,5 pada persentase radiasi matahari 63%. Tinggi kapulaga yang optimal 146,74 cm pada persentase radiasi matahari 67%. Jumlah daun per rumpun yang optimal sebanyak 235,296 helai pada persentase radiasi matahari 60%. Jumlah tandan bunga per rumpun yang optimal sebanyak 23,4 pada persentase radiasi matahari 60,5%. Jumlah buah per tandan yang optimal sebanyak 8,7 pada persentase radiasi matahari 56%. Dengan demikian, kapulaga akan tumbuh secara optimal di bawah naungan tegakan yang persentase radiasi matahari sebesar 56% hingga 67%.Kata kunci: kapulaga; kebun hutan; naungan; pertumbuhan; tegaka
PENGARUH CUSTOMER VALUE DISCLOSURE (CVD) DAN RESEARCH & DEVELOPMENT DISCLOSURE (CVD) TERHADAP LABA
Get PDFPenelitian ini bertujuan menguji pengaruh Customer Value Disclosure (CVD) dan Research and Development Disclosure (RDD) terhadap laba. Tujuannya untuk mengetahui komponen mana yang lebih dapat menciptakan laba khususnya di era transformasi bisnis saat ini. Penelitian ini menggunakan purposive sampling dengan tiga kriteria menghasilkan 211 observasi setelah dikurangi outlier, periode 2015 – 2020 pada perusahaan di tiga kategori industri berdasarkan IDX Industrial Classification (IDX-IC) serta menggunakan database OSIRIS dan laporan tahunan. Hasilnya, hanya Research and Development Disclosure (RDD) yang dapat menciptakan laba bagi perusahaan. Seluruh aktivitas riset contohnya duplikasi bibit unggul, pengembangan produk berbasis kedelai, pengembangan biosecurity dan pakan ikan serta alokasi biaya riset justru dapat meningkatkan laba di era transformasi bisnis yang terus berjalan.
Phytochemical Screening and Antioxidant Activity of Tampoi Leaves (Baccaurea macrocarpa (Miq.)Mull.Arg ) by Leaf Age and Solvent Type
Get PDFTampoi (Baccaurea macrocarpa (Miq.) Mull.Arg) is a member of the genus Baccaurea which is distributed mainly in the regions of Borneo and Sumatra. The use of tampoi can be done by exploring the potential of tampoi plants as medicinal plants. The research was conducted to determine the content of secondary metabolites and the results of the analysis of the antioxidant activity of tampoi leaves. The leaf extraction process uses polar solvents in the form of water, 70% ethanol, 70% methanol and non-polar in the form of chloroform, toluene, and n-hexane. Analysis of antioxidant activity using the DPPH method (2,2-diphenyl-1-picrylhydrazil). The results showed that polar solvents are better used in extracting secondary metabolites of tampoi leaves in non-plar solvents. The conclusion of this study is the types of secondary metabolites contained in tampoi leaves, namely alkaloids, flavonoids, saponins, tannins, steroids, and triterpenoids. Young tampoi leaves have a stronger antioxidant activity value than old leaves. The most effective solvent for extracting secondary metabolite compounds of tampoi leaves is 70% methanol
Trade Group Anatomy Structure and Usage of Nyatoh Wood in The Genus of Palaquium
Get PDFBased on the classification of trade timber species based on the Decree of the Ministry of Forestry No. 163 of 2003, wood species originating from the genera Palaquium, Payena, and Ganua/Madhuca are categorized as Nyatoh wood. The three genera most commonly found in the Indonesian timber trade are wood from the genus Palaquium. The utilization of wood and its economic value can be determined by looking at the characteristics of its anatomical structure. Therefore, it is necessary to observe the anatomical structure of the genus Palaquium wood. Observation of the anatomical structure of wood using the book "Microscopic Characteristics for Identification of Broadleaf Wood" by the Committee of the International Association of Wood Anatomists showed that Nyatoh wood has large fiber sizes with thin walls. In addition, there are prismatic crystals in the parenchyma canals. The prismatic crystal is a latex known as gutta-percha, which can be processed into a good electrical insulator. Another use is for raw materials for pencil rods and veneer raw materials. In assessing the beauty of wood, Nyatoh wood can go up to the commercial beautiful class I, according to the trading timber group assessment system developed by the Forest Products Research and Development Center
Phytochemical Content of Fresh Purple Sweet Potato (Ipomea batatas L.) Extract As Acid-Base Titration Indicator
Get PDFResearch has been carried out to examine the extraction and application of purple sweet potato tuber extract as an indicator of acid-base titration. Purple sweet potato tuber extract was obtained by extracting fresh tubers using ethanol 95% medical grade (PSPTE-95%) and ethanol 96% analytical grade (PSPTE-96%). Three variations of the maceration stage extracted samples. The extract was used for a phytochemical test and applied as an indicator for acid-base titration. Based on the research conducted, the rendement extract was extracted by ethanol 95% medical grade (PSPTE-95%) for the three stages of maceration are 4.34%, 4.76%, and 5.64%, the rendement extract was extracted by ethanol 96% analysis grade (PSPTE-96%) for the three stages of maceration are 7.09%, 12.16%, and 20.43%. PSPTE-95% and PSPTE-96% contain flavonoids, tannins, alkaloids, and saponins. PSPTE-95% and PSPTE-96% can be applied as indicators for titration of HCl solution with NaOH solution and HCl solution with NH4OH solution