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All Journal EUGENIA Jurnal Ilmiah Sains AGRI-SOSIOEKONOMI Silvarum COCOS
Josephus I. Kalangi
Program Studi Kehutanan, Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Economics, Econometrics & Finance Environmental Science Mathematics Physics Social Sciences

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PEMANFAATAN HASIL HUTAN BUKAN KAYU OLEH MASYARAKAT SEKITAR HUTAN DESA MINANGA III KABUPATEN MINAHASA TENGGARA Christien N. Kendek; Johny S. Tasirin; Reynold P. Kainde; Josephus I. Kalangi
COCOS Vol. 3 No. 5 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i5.2377

Abstract

ABSTRACTThe utilization of the non-timber forest crop by the people who are living in the forest area, was studied. Interview by giving samples to as many as 30 people, which has been taken from the overall population 95 families.This research was done on November to december 2011. The result was indicating that the rest of minor societies around 20% are depending their life on the non timber forest crop.First, some of them are the roof maker by using the palm tree leaves as the row material, second some of them are the traditional medicines (herbs) maker by using plants or trees in the forest as ingredients. Third some of them are the wood fishing such as : crabs, shells, and stream fishes.Non-timber forest crop that provide the greatest revenue is income from crab seekers which can give an income of Rp 47,160,000/year. As for the whole, the value of the economic benefit of non-timber forest crop to the local community is rp 83,855,000/year obtained from the utilization of Nypa fruticans and foodstuff as such as shells, crabs and stream fishes.The Key Words: Non Timber Crop, Questioner Catalogue, Samples, Palm Trees, Wood Fishes.
PENGARUH PEMBERIAN PUPUK MAJEMUK NPK TERHADAP PERTUMBUHAN BIBIT Gyrinops versteegii Dina Juanita; Marthen T. Lasut; Josephus I. Kalangi; Josea Singgano
COCOS Vol. 3 No. 5 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i5.2490

Abstract

ABSTRACTThis research aims to analyze the effect of NPK compound fertilizer and a good dose of growth of seedlings Gyrinops versteegii..This study used a Randomized Complete design of experiment method (RAL), with 5 treatment da 4 replicates. Treatment that is given that (A) no fertilizer (control), (B) NPK fertilizer plant 0.5 grams/Compection, (C) compaction NPK fertilizer 1 g/plant, (D) NPK fertilizer plant 1.5 grams/Compection, (E) Compection NPK fertilizer 2 grams/plant. The planting medium used in this research is tanaah, da sand with a ratio of 2: 1. The observed variables are height-diameter seedlings, seeds, leaves and large amount of leaves.The research results showed that NPK compound fertilizer on seedling Compection Gyrinops versteegii real influence only on stem diameter. (B) treatment of 0.5 grams/plant and treatment (C) 1 gram/plant gives good results on stem diameter growth of plants. While on a high number of seedlings, leaf area and leaf gave no real influence.
BEBERAPA SIFAT FISIK GUBAL ANGSANA (Pterocarpus indicus) Belly Ireeuw; Reynold P. Kainde; Josephus I. Kalangi; Johan A. Rombang
COCOS Vol. 3 No. 6 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i6.2715

Abstract

ABSTRACT This research was to study about some physical properties of angsana (Pterocarpus indicus) sapwood related in wood position to wood position in trunk (base, middle, and tip) and to environmental factors (temperature and humidity). It used a faktorial design in completely randomized block with combinations of 3 environmental condition and 3 wood position in trunk. These nine treatments are repeated three times. The results showed that moisture content, wood density, and volumetric shrinkage of angsana sapwood could be influenced by wood position in trunk (base, middle, and tip). The swelling property of angsana sapwood was not influenced by wood position in trunk but it was influenced by environmental factors. Key words : physical properties, sapwood, wood position, temperature, humidity
Analisis Potensi Penyerapan Karbon Atmosferik di Stasiun Penelitian Hutan Bron Desa Warembungan Kab. Minahasa Caroline N.A.C. Tasirin; Martina A. Langi; Hengky D. Walangitan; Josephus I. Kalangi
COCOS Vol. 3 No. 6 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i6.2927

Abstract

ABSTRACTThis study aims to analyze the current carbon stock of Bron Forest Research Station, Warembungan village, regency of Minahasa, and to analyze the potential of Bron Forest Research Station in sequestering atmospheric carbon. This study was done in Bron Forest Research Station, Warembungan village, regency of Minahasa, for three months. Measurements for this study were done in 15 systematically placed observation plots. The measured variables were diameter at breast height, bole height, and the mass of litter and understory.The results of this study shows that Bron Forest Research Station has a total biomass of 49,821.84 tonnes, or 996.44 tonnes/ha. This biomass consists of 23,416.27 tonnes of carbon, atau 468.33 tonnes/ha. Up to the time of the study, Bron Forest Research Station has sequestered 85,859.65 tonnes of carbon dioxide from the atmosphere, or 1,717.19 tonnes/ha. Assuming the forest does not undergo any significant change, Bron Forest Research Station will potentially increase its biomass as by 4.66 tonnes/ha/year, or 232.90 tonnes/year for the entire 50-hectares area. This additional biomass entails an increase of carbon stock by 1.72 tonnes/ha/year, or as much as 86.17 tonnes/year for the whole area. Bron Forest Research Station will potentially sequester an additional 6.32 tonnes/ha/year of carbon dioxide from the atmosphere, or as much as 315.97 tonnes/year for the whole area.Keywords: biomass, carbon sequestration, carbon dioxide sequestration.
STUDI RIAP CEMPAKA Elmerrillia ovalis (Miq.) Dandy DI PINARAS DAN MASARANG Zulfitri Lawe; Josephus I. Kalangi; Alfonsius Thomas; Johan A. Rombang
COCOS Vol. 4 No. 1 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i1.3592

Abstract

ABSTRACCommunity forests around Masarang and Pinaras are dominated by stands of E. ovalis (Miq.) Dandy. Theincrement is usually used to express the of increase of stand volume in a specified time unit. This study is aimedto determine the average annual increment of E. ovalis in community forests of Masarang and Pinaras. Thisresearch was conducted in the villages of Masarang and Pinaras. The method used was the comparison of twoindependent samples in two different locations with three replications. The method used was the diameter andheight was measured on 198 E. ovalis trees in Pinaras and 251 E. ovalis trees in Masarang. The results of theanalysis concluded that there was no difference between the increments for E. ovalis in Masarang and Pinaras.Soil fertility, soil texture, and altitude in the 2 locations did not become prohibitive factors for the growth of E.ovalis.Keyword: E. ovalis, Increament, Pinaras, Masarang
PEMUPUKAN GANDASIL-D TERHADAP PERTUMBUHAN BIBIT POHON PENGHASIL GAHARU JENIS Gyrinops versteegii (Gilg) Domke Handiward Tonoro; Fabiola B. Saroinsong; Josephus I. Kalangi; Marthen T. Lasut
COCOS Vol. 4 No. 2 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i2.3775

Abstract

ABSTRACTGaharu contains damar wangi from the mastic tree on a part of gaharu-producer trees that accurs naturally and have died due to a fungal infection that accurs naturally or artificially. The purpose of this study was to analyze the effect of frequency method Randomized Complete Design (CRD), with 5 treatment and 5 replications. A treatment without fertilizer, B treatment (application of fertilizer once a week, which is on Saturday, C treatment (twice a week, which are on Saturday and Tuesday, D treatment (3 times a week, which are on Saturday, Tuesday and thursday and E treatment (4 times a week, which are on Saturday, Monday, Wednesday, Friday. Planting medium used in this study is a mixture of soil, sand and chicken manure in the ratio 1:1:1 by volume. Variables measured were plant’s height, stem’s diameter and number of leaves. The results showed that the application of leaf fertilizer Gandasil D on Gyrinops versteegi seedi deliver tangible results in plants height. D treatment (application of fertilizer 3 times a week) showed good results in plant compared with other treatment.Keywords : Gyrinops caudata, Agarwood, foliar fertilizer Gandasil D
PERTUMBUHAN Gyrinops caudata (Gilg) Domke PADA LAHAN DENGAN KEDALAMAN MUKA AIR TANAH YANG BERBEDA Habdi Selpia; Johan A. Rombang; Marthen T. Lasut; Josephus I. Kalangi
COCOS Vol. 6 No. 11 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i11.8395

Abstract

ABSTRACT   This research studiet the growth of Gyrinops caudata on land with tho different ground water depths, around 45 - 50 cm below soil surface at A location  and 90 - 98 cm below surface at B location.  The method used in this study was a comparative method and the determination of plant samples was carried out in accordance with the purpose of the research (purposive sampling).  The measured variables were trunk diameter and the height of free branch trunk.  The number of samples measured in this study were 6 (six) trees, three (3) trees in A location and three (3) trees in B location. Trunk diameter was measured using a measuring tape at a height of 30 cm from the ground and the free branch trunk height was measured from the ground up to the first branch.  Measurements were carried out once a month in one year.  The results showed that increments in the trunk diameter and the free branch trunk height at B location were greater than at A location. Keywords: Growth Gyrinops caudata, Agarwood, Agarwood tree, Growth Rate.
Analisis Koefisien Kekasaran Sungai Di Sungai Sario Dengan Persamaan Manning Adenancy A. Montjai; Johan A. Rombang; Josephus I. Kalangi
COCOS Vol. 6 No. 12 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i12.8633

Abstract

ABSTRACT Analysis of River Roughness Coefficient in Sario River with Manning Equation Sario river is the main river of Sario Watershed.  Due to rapidly increasing population, protected area alongside river border had become settlement.  This causes a decrease of river channel capacity so that flood could happen as a case in January 2014.  Manning equation is the formula frequently used to calculate the flow capacity of open channel. The purpose of this research is to determine roughness coefficient of Sario River by using Manning equation. This research was done in three months starting from January 2015 to March 2015.  Observed and measured variables were river width, top width, bottom width, water depth, river channel depth, river pseudosection profile, flow velocity, gradient of bottom channel, and channel description.  Method applied was survey method and the determination of measurement and observation points was done with certain consideration (purposive sampling).  The averages of calculated roughness coefficients of Sario River are 0,049 for upstream, 0,050 for middlestream, and 0,060 for downsrtream. The average of Sario River roughness coefficient is 0,048.  Garbage and water countaining dispersed particles caused roughness coefficient greater than secondary data for natural channel. Keywords : River Roughness, Manning equation, Sario River
PENGARUH PEMBERIAN PUPUK KOMPOS TERHADAP PERTUMBUHAN BIBIT JABON MERAH (Anthocephalus macrophyllus) Etivera Safuf; Alfonsius Thomas; Johan A. Rombang; Josephus I. Kalangi
COCOS Vol. 6 No. 17 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i17.9840

Abstract

ABSTRACT  This research studies the effects of compost fertilizer on the growth of red jabon (Anthocepalus macrophyllus) seedling. The method used is completely randomized design, with 5 treatments and 5 replications. No (zero) compost was applied on treatment A as a control, 25 grams of compost on treatment B, 50 grams of compost on treatment C, 75 grams of compost on treatment D, and 100 grams of compost on treatment E. Based on recommendation, growth media used in this research was a mix of soil and sand, with a ratio of 3:2. Variables observed were increase in plant height, increase in stem diameter, increase in number of leaves, and the dry weight of shoot. Results showed that the application of compost fertilizer to red jabon seedling made significant differences in the increase of plant height and stem diameter. Key words: red jabon seedling (Anthocephalus macrophyllus) compost fertilizer  zeorganik
Fenologi Pohon Angsana (Pterocarpus indicus) Di Kota Manado. Tepenur Weya; Johny S. Tasirin; Martina A. Langi; Josephus I. Kalangi
COCOS Vol. 7 No. 2 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i2.12015

Abstract

ABSTRACTThis research is aimed to study the phenology of angsana trees in the urban areas of Manado city. Sam Ratulangi street is divided into five observing segments with relatively the same number of trees at about 129-131 at each segment giving a total of 651 trees. The phenology observed at each tree including leaf, flower, and fruit phenomenon. The diameter of each tree are measured. Trees were then greuped into five categories:<10, 10-<20, 20-<30, 30-<40 and ≥40 cm. The results shows that angsana trees in Sam Ratulangi street had diameter of about 3.4-50.5 cm.The highest accumulation at trees was at last fourth categories ranging at 132-185 trunks. The phenology of leaves which dominate the entire segments on Sam Ratulangi street are green leaves at 89.9%of the 651 trees.The shoot phenology was performed by 11-20 trees (1.7-3.1%) and the flowering phenomena were found in 17-20 trees (2.6-3.8%). The flowering phenomena was mostly found at segment 1 (zero point) and becoming less and less toward the upper segments (Citraland intersection). The fruiting phenology shows and an opposite trend. The new flowering phenology are found on trees in three categories at medium diameters (10-40 cm) while the phenology of fruiting are found on trees with large diameters (>20 cm).
Co-Authors Adenancy A. Montjai Adenancy A. Montjai, Adenancy A. Alfonsius . Thomas Alfonsius Thomas Alfonsius Thomas Alfunsius Thomas Astuti Anna Beka’ Belly Ireeuw Caroline N.A.C. Tasirin Chandra C. Mosooli Chandra C. Mosooli, Chandra C. Christien N. Kendek Claudio Bonifasius Cristina Lestary Sihaloho Dina Juanita Etivera Safuf Etivera Safuf, Etivera Fabiola B. Saroinsong Fabiola B. Saroinsong Fabiola B. Saroinsong Fabiola Baby Saroinsong Fadli Rahman Habdi Selpia Habdi Selpia, Habdi Handiward Tonoro Hartono . Hengky D. Walangitan JOHAN A. ROMBANG Johannes E. X. Rogi Jos Singgano Jos Singgano, Jos Josea Singgano Jouke G. Watratan Lidia Anike Pandeirot Luh Putu Ratna Sundari Malsupri Taher Marthen T. Lasut Marthen T. Lasut Martina A. Langi Martina A. Langi Meity Rantung Nastasia Irene Potoboda Nonong Krisnawati Loha Prestin Babo Randi Purba Reynold P. Kainde Reynold P. Kainde Rizky Nurhalizah Karim Santi . Lumingkewas Saroinsong, Fabiola Baby Semuel P. Ratag Semuel P. Ratag Serly Lumabi Sihaloho, Cristina Lestary Sukarman Hi. Jafar Telji Y. Palemba1, Tepenur Weya Tepenur Weya, Tepenur Terry M. Frans Zulfitri Lawe