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All Journal Jurnal BETA (Biosistem dan Teknik Pertanian) Journal of Degraded and Mining Lands Management SC (Savana Cendana) : Jurnal Pertanian Konservasi Lahan Kering AGRIMOR Jurnal Teknik Sipil Indonesia Chimica Acta Jurnal Fisika : Fisika Sains dan Aplikasinya Indigenous Biologi Jurna Beta Kimia
Kapitan, Origenes Boy
Politeknik Pertanian Negeri Kupang
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Pengaruh Ketinggian Genangan dan Jenis Pupuk Teh Kompos terhadap Pertumbuhan dan Hasil Pakcoy (Brasicca rapa L.) Secara Hidroponik Raharjo, Krisantus Tri Pambudi; Kapitan, Origenes Boy; Nahak, Pius Robertus
Savana Cendana Vol 8 No 4 (2023): Savana Cendana (SC) - October 2023
Publisher : Fakultas Pertanian, Sains, dan Kesehatan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/sc.v8i4.1307

Abstract

Pakcoy (Brassica rapa L.) is a type of vegetable plant that belongs to the Brassicaceae family. The pakcoy plant originates from China and has been widely cultivated after the 5th century in China. Besides being a natural fertilizer, compost tea can also function as a natural pesticide, because it can restore soil fertility naturally and increase plant resistance to pests and diseases. The application of compost tea in addition to increasing the nutrient content of the soil can also increase the population of beneficial microorganisms to increase soil fertility. Application on leaves, can suppress the development of pathogens that cause leaf diseases. Research has been carried out in the faculty’s garden. Timor University Agriculture, Sasi Village, Kefamenanu City District, TTU Regency. The time needed to complete the research from April to May 2018. The materials to be used in this study are as follows; pakcoy seeds, husk charcoal, dulang, AB MIX nutrition, 8.5 cm diameter bucket, guano fertilizer, talirafia, the tools to be used in the research are as follows; machete, crowbar, scissors, cutter, hammer, nails, saw, ruler, book/pen. This study will use a factorial completely randomized design (CRD) (3 x 3) repeated 3 times. The first factor is the height of the puddle (A) which consists of 3 levels, namely: 3 cm (A1) Gamal tea compost, 6 cm (A2) Guano tea and 9 cm. The second factor is the type of organic liquid fertilizer, namely: AB Mix (J1), guano (J2), and Gamal Leaf Compost (J3). The treatment combinations were A1J1, A2J1, A3J1, A1J2, A2J2, A3J3, A1J3, A2J3, and A3J3. The results showed that there was an interaction of the effect of inundation height and the type of compost tea fertilizer on the parameters of leaf number and leaf area, but there was no interaction on crop yields. The data showed the highest moisture content and neutral soil pH, Husk Hydrogen Potential, highest growth, plant height, number of leaves, fresh weight of the heaviest plant, total fresh weight, fresh weight of husk, obtained from a water height of 3 cm and the addition of guano compost tea.
PROFIL SENYAWA POLAR DAN SEMI POLAR DAUN TEMBELEKAN (LANTANA CAMARA) ASAL PULAU TIMOR Kapitan, Origenes Boy Kapitan; Kusumawardhani, Dina T.; Nitti, Fidelis; Kedjo, Gervasia Y
INDIGENOUS BIOLOGI : JURNAL PENDIDIKAN DAN SAINS BIOLOGI Vol 7 No 3 (2024): INDIGENOUS BIOLOGI : JURNAL PENDIDIKAN DAN SAINS BIOLOGI
Publisher : Prodi Pendidikan Biologi FKIP Universitas Kristen Artha Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33323/indigenous.v7i3.567

Abstract

Tembelekan (Lantana camara) is a shrub widely distributed in tropical regions, including the island of Timor. The arid and semi-arid tropical climate of Timor is believed to accumulate specific active chemical compounds different from other regions. Tembelekan leaves are processed into crude drugs and extracted using ethanol and ethyl acetate solvents. The preparation of ethanol and ethyl acetate extracts is carried out through the maceration method. The active chemical components of the ethanol and ethyl acetate extracts are characterized using FTIR and GC-MS. FTIR results indicate that the majority of functional groups present are similar due to the polar nature of the extracted compounds, with only a few differing functional groups between the two plant leaf extracts. GC-MS analysis reveals that the active chemical compounds in the ethanol extract of tembelekan leaves include hexadecanoic acid, phytol, 9,12,15-octadecatrienoic acid, 4,4-dimethyl-3-(3-methyl-3-buten-1-yliden)-2-methylidenbicyclo[4.1.0]heptane, and retinol. The active chemical compounds in the ethyl acetate extract of tembelekan leaves include tetradecanoic acid, 9,12,15-octadecatrienoic acid, squalene, 4,4-dimethyl-3-(3-methyl-3-buten-1-yliden)-2-methylidenbicyclo[4.1.0]heptane, and tricyclo[4.3.0.0(7,9)non-3-ene,2,2,5,5,8,8-hexamethyl-(1.alpha.,6.beta.,7.alpha.,9.alpha.). Metabolite secondary analysis of the plant using GC-MS shows that compounds in L. camara are dominated by derivatives of plant fatty acids (lipids) as an adaptation to the growing environment.
Sifat Mekanis Kayu Salam Pada Kondisi Layan Basah Kusumawardhani, Dina Tiara; Hidayatullah, Rizky; Bahtiar , Effendi Tri; Kapitan, Origenes Boy
Jurnal Teknik Sipil Vol 31 No 2 (2024): Jurnal Teknik Sipil - Edisi Agustus
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2024.31.2.7

Abstract

Abstract The abundance of salam wood on the island of Java is an attraction for its use as a construction material. However, there is not much scientific information regarding the mechanical properties of salam wood. This study aims to identify some of the main mechanical properties of salam wood with destructive tests referring to ASTM D143 including tests for static bending, compression parallel to the grain, compression perpendicular to the grain, and shear, as well as physical properties of wood including density, specific gravity, and moisture content. Salam wood with small test samples free of defects in wet and air dry service conditions referring to SNI 7973:2013. The stress value generated in each test by air dry wood has a greater value than that of wet wood. In general, the wet service factor of the test results is not in accordance with the SNI value, but the static bending test for both MOE and MOR produces values that are close to the values required by SNI. Wet service conditions have a significant effect on the strength value of wood.
Co-Authors Adeline Norawati Hutapea Alexander Kehi Klau Aloysius Rusae, Aloysius Apriono Sutiono Arnoldus Klau Berek Bahtiar , Effendi Tri Ceunfin, Syprianus Dewi S. Hede Dina Tiara Kusumawardhani Eduardus Yosef Neonbeni Erly Grizca Boelan Fidelis Nitti Filogus N. Payon Fredy Saudale Hidayatullah, Rizky Kaet, Vinsensius Olin Kedjo, Gervasia Y Kune, Simon Juan LAKSMI AMBARSARI Lapailaka, Titus Luther Kadang Maksimus Y Seran Marsianus Falo Modhe, Katarina Naat, Johnson N. Nahak, Pius Robertus Pingak, Redi Kristian Rensini, William Antoni Roberto I C O Taolin Sherlly Ledoh Syamsul Falah Tefa, Anna Tuas, Maria Angelina