457 research outputs found
Pertumbuhan Tegakan Samama (Anthocephallus macrophylla) pada Tanah Regosol di Kampus Universitas Pattimura Ambon
No full textSamama (Anthocephallus macrophylla) is a type of forest tree native to Maluku which is found growing wild naturally on several islands such as Seram, Buru, Ambon, Haruku, Saparua and Nusalaut. This type of tree usually grows spread out at an altitude of 0 - 800 m above sea level, and ecologically this plant also prefers secondary forest areas that are quite open to sunlight. Samama is known as a fast-growing tree with an average growth rate of 3-5 cm / year in diameter and its wood is widely used by the community as a building material for houses such as roof construction, house walls, doors and windows as well as raw materials for making furniture such as cupboards, tables, chairs and others. This study aims to analyze the effect of regosol soil to the growth of samama stands at the Pattimura University campus in Ambon. This study uses a multiple regression method. The results of this study indicated that regosol soil is very suitable for cultivating samama plants because it produces good average growth in diameter, height and number of branches. Environmental factors such as soil fertility, soil moisture, soil acidity, temperature, air humidity and light intensity have a very significant influence on the growth of samama plants
Kualitas Glulam Samama dengan Kombinasi Kayu Mangium dan Mahoni (The Quality of Samama Glulam and Its Combination with Mangium and Mahogany Wood)
No full textPrevious study on several types of samama glulam had shown the MOE and MOR which is not meet JAS 2007. The recent study addressed the glulam construction from samama wood combined with two commercial woods to improve the quality of resulting glulam. Mangium (Acacia mangium) and mahogany (Swietenia mahogany) woods were laminated with samama wood using isocyanate adhesive at a spread rate of 200 g m-2 and then clamped with 30 cm gap between the clamp for 3 hours. Nine types of glulam were made with and without a combination of 1 cm lamina from the three types of wood species. The results showed the difference of density between samama glulam with the other types. Furthermore, the moisture content, hot water delamination, cold water delamination, MOE and MOR of the products have met the requirements of JAS 2007 for structural wood. Bonding strengths of most types of glulam have met the standard except for samama and mahogany glulam without the combination. The results of this study strengthened the potency of samama as glulam material for the structural application.Keywords: glulam, mahogany, mangium, samama, structural
Some Chemical Properties and Natural Durability of Samama Wood (Antocephalus macrophylus Roxb.) against Subterranean Termite
No full textSamama wood (Antocephalus macrophylus Roxb.) is an endemic wood of Sulawesi and Moluccas. This wood belongs to the 3rd class of wood strength. However, its natural durability against termite attack is still unknown. Therefore, the research about its extractives, ash content, heating value, and natural durability is paramount to appropriate usage of the wood. The samples were prepared from samama wood with diameter and height of 30-45 cm and 8.2-11.4 m, respectively. The results indicated that the extractive solubility in hot water, cold water and ethanol benzene were 7.83, 3.86, and 4.47%, respectively. The ash content was 1.31%, meanwhile the heating value was 4059 cal g-1. Based on its weight loss value, according to SNI 01-7207-2006 standard, the natural durability of samama wood against subterranean termite (Coptotermes curvignathus) is classified as in the 2nd class.Key words : Antocephalus macrophylus, extractives, heating value, natural durability, subterranean termit
PENGARUH JENIS TANAH BERMIKORIZA TERHADAP PERTUMBUHAN SEMAI SAMAMA (Neolamarckia macrophylla (ROXB.) BOSSER) DI PERSEMAIAN
No full textSamama (Neolamarckia macrophylla (Roxb.) Bosser) is a type of local Indonesian commercial plant that proliferates, can grow in various types of soil, and spreads evenly naturally in Maluku, Papua, and Sulawesi which has good potential for development. Many soil microorganisms play a role in providing and absorbing nutrients by plants. To support the growth of samama in various types of soil, it is necessary to provide it with beneficial soil microbes, one of which is AMF. This research aims to determine the effect of mycorrhiza from three types of soil (entisol, inceptisol, and ultisol) from the rhizosphere of samama stands on the growth of samama seedlings in the nursery. The research was conducted in the Greenhouse of the Faculty of Agriculture, Pattimura University, Ambon, in June-October 2022 using a non-factorial completely randomized design (CRD) with treatment of mycorrhizal soil types from under samama stands, consisting of entisol, inceptisol and ultisol soil with three replications. The result showed a very significant effect on the observed parameters (percentage of root infection (A1= 67.78%), seedling height (A1=5.66 cm), increase in diameter (A1=0.155 cm), increase in number of leaves (A2=8 .44 strands) and root dry weight (A1=0.65 gr)). Specifically, to improve the quality of growth of Samama plant seedlings, it is recommended to use the mycorrhizal entisol soil type taken from Samama stands
Kualitas Kayu Lapis dari Finir Bagian Juvenil dan Dewasa Samama (The Quality of Plywood Made from Juvenile and Mature Wood Veneer of Samama
No full textThis study designed 7 types of plywood that were arranged by juvenile and mature part of samama (Anthocephalus macrophyllus) wood, The adhesive used was urea formaldehyde with addition of hardener (NH4Cl) in ratio of 100:1 (weight/weight). The adhesive was applied on both surfaces of core veneer, which were loose and tight surfaces, with glue spread was 150 g m-2. The veneers were arranged in accordance with the research design and the resulted structures were then hot pressed at 110 C for 30 seconds per mm of the plywood’s thickness. The pressure was 10 kg cm-2. The results showed that bonding strength of plywood made from juvenile samama veneer was lower than that of the mature one, although the value was still met SNI standard for type I interior plywood. Furthermore, plywood’s moisture content was also met the requirement of the standard. Plywood density was increased by 11-12% from that of the wood. These findings suggest the suitability of both juvenile and mature wood of samama for the material of good quality plywood. Further studies on determination of other veneer-based products, such as laminated veneer lumber (LVL), were then recommended.Keywords: juvenile, mature, plywood, samama, urea formaldehyd
EKSPLORASI FUNGI MIKORIZA ARBUSKULA (FMA) PADA RHIZOSFER POHON SAMAMA (Anthocephalus macrophyllus (Roxb.) Havil)
No full textABSTRACT
Samama (Anthocephalus macrophyllus) is a wood-producing tree with fast growth. Arbuscular mycorrhizal fungi status (AMF) can associate well with samama plants. This study aimed to determine the diversity of the genus and the number of spores of AMF in the rhizosphere of the samama plant, which has different soil types and environmental factors. The method used to obtain AMF spores was a wet filter pour and centrifugation technique at the center for plant seeds and plant protection for two months. Based on the research results in the village of Poka, it was found that there were four AMF genera with a total of 235 spores. Hatusua village found two genera of FMA with a count of 141 spores. In the village of Uraur, three genera of FMA were found with 479 spores. AMF spore production is influenced by the type of fungus and temperature, sunlight, soil pH, aeration, and water. The presence of mycorrhizae can increase soil fertility as a biological agent
Pentingnya Pengetahuan Bagi Pelaku Usaha Umkm Samama
No full textThe aim of this research is to determine knowledge implementing, knowledge creating, and knowledge sharing on the performance of MSMEs in Bojongsari Depok. The method used in this research uses an explanatory research method which is used to find out how big the relationship between variables is. The population in the study was Samama MSMEs in Bojongsari Depok. There were 138 respondents distributed via Google Form, but 49 returned questionnaires. To measure the suitability of the data via the SPSS application. The research results show that knowledge implementing, knowledge creating, and knowledge sharing both partially influence the performance of MSMEs in Bojongsari Depok. The variables knowledge implementing, knowledge creating, and knowledge sharing jointly influence the MSME performance variable by 80.6% while the remaining 19.4% is influenced by other factor
The International Normalized Ratio Calibrated for Rivaroxaban-(INRrivaroxaban) has the Potential to Normalize PT Results for Rivaroxaban-treated Patients : Results of an in-vitro Study
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