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Articles 11 Documents
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ANALISIS EKONOMI MESIN PERONTOK (POWER THRESHER) KEDELAI TIPE MPT 001 Rompas, Putria G.; Molenaar, Robert; Rumambi, David P.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.35082

Abstract

AbstractThis study aims to analyze the economy, total costs and economic feasibilityof the soybean threshing process using the power thresher MPT 001 Type atLolah Satu Village, East Tombariri District, Minahasa Regency. Break evenpoint value or operational break even point of the power thresher MPT 001Type is at an operating level of 17.866,53 kg/year or equivalent to Rp.7.878.577/year. Analysis of the operational feasibility of the power thresherMPT 001 Type based on the amount of service potential available using acommercial scale calculation base is, resuted NPV value of Rp.302.056.654,69, the IRR of 195,982%, the B/C ratio of 1.4497. This conditionshows that the power thresher MPT 001 Type is economically feasible. Basedon the existing condition on site the machine does not fulfil the operationconditions that guarantee sustainability. The sensitivity analysis shows thatchanges in the level of working hours per year and the price of drying servicesare very influential on the feasibility of operations with the lowest level beingthe service price of 1.1 times the total cost of threshing services.Keywords: economics analysis. power thresher, soybean
TUMBUHAN INANG dan POPULASI JUMLAH SARANG SEMUT RANGRANG (Oecophilla smaragdina) di HUTAN TAMAN WISATA ALAM BATUPUTIH KOTA BITUNG Remina Wandik, Remina Wandik; Frans, Terry M.; Wawan. Nurmawan, Wawan. Nurmawan
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.34680

Abstract

ABSTRAKRangrang ants are one of the non-timber forest product commodities from the fauna group. Weaverants have the benefit of regulating ecological functions as decomposers and help pollinate floweringplants. Economically, weaver ant eggs are used for bird feed. The research was carried out in theBatuputih Nature Park Forest, Bitung City, North Sulawesi Province, for one month in March 2019. Thisstudy aims to determine the type of host plant and the population of the number of weaver ant nests inBatuputih TWA. The method used is a systematic strip sampling by recording all trees that have nests andpurposively to determine the sample. The results of the study showed that there were 14 (fourteen) typesof weaver ant host plants, namely sempur (Dillenia indica L) 57, forest walnut (Canarium littorale BI) 48,titolang (Gastonia serratifolia Miq.) 40, noni (Morinda Citrifolia L.) 33, wood egg (Alstonia angustifoliaWall.ex A. DC) 32, mamaling (Leea aculeate Blume) 29, ylang (Cananga odorata Lam) 19, waru(Hibicus tiliaceus L) 15, betel wood (Piper aduncum L) 12, banyan (Ficus benjamina L) 8, ganemo(Gnetum gnemon L) 7, flower wood (Spathodea campalunata P. Beauv) 3, white teak (Gmelina arboreaRoxb) 1, and seho yaki (Caryota mitis Lour) 4. Average number of nests / species host plant, sempur 6.33nests, forest walnut 8 nests, titolang 6.6 nests, noni 6.6 nests, egg wood 5.3 nests, mamaling 5.8 nests,ylang ylang 4.7 nests, waru 15 nests, wood 4 nests of betel, 8 nests of banyan, 3.5 nests of ganemo, 3nests of flower wood, 1 white teak, 1.3 nests of seho yaki.Keywords: weaver ants, host plant species, non-timber forest products, batuputih natural tours park.
ANALISIS EKONOMI MESIN PENGOLAH NIRA AREN MENJADI GULA SEMUT DI KELOMPOK TANI KARYA TANI DI DESA TALAITAD Momongan, Nikita V.; Molenaar, Robert; Laoh, Esry O. H.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.35086

Abstract

AbstractThe purpose of this study is to analyze the economy, total costs and economicfeasibility of the of palm sugar processing machine HORJA MPN20 concerning the total costof processing, and economic feasibility is assessed from 4 criteria, namely: BEP, NPV, B/CRATIO, and IRR used by farmer groups in Talaitad Village, Suluun Tareran Subdistrict,South Minahasa Regency. The results showed an analysis of the operational feasibility of sappalm into palm sugar based on the amount of potential services available and using the basisof commercial business scale calculation resulted in a Net Present Value (NPV) ofRp.153,130,851.72, Internal Rate of Return (IRR) of 97%, Benefit/Cost Ratio (B/C Ratio) of1.32 and Break Even Point of operation of palm sugar processing machine MPN20 are at anoperating rate of 116.50kg/year or equivalent to Rp.4,653,142.02/year.Key words: economics analysis, palm sugar, processing machine of palm sugar
STRUKTUR DAN KOMPOSISI JENIS BURUNG DI KEBUN RAYA MEGAWATI SOEKARNO PUTRI, KABUPATEN MINAHASA TENGGARA Ampouw, Orlio H.; Pollo, Hard N.; Kainde, Reynold P.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.34918

Abstract

ABSTRACTThis study aims to make an inventory of bird species in the KRMSP area, and analyze changesin the structure and composition of its bird species. This research was conducted in September 2020 atMegawati Soekarno Putri Botanical Garden, Ratatotok, Southeast Minahasa, North Sulawesi. Themethod used in this research was the IPA method (Indice Ponctuels d'Abondance) with priorityobservation points in the reclamation areas of years 2000, 2001, 2002, 2003/2004 and 2006/2007. Thisresearch covered a total of 15 observation points in 5 reclaimed areas. Results observed 896 birdindividuals, divided into 26 families and 44 species. Results were analyzed using the Shannon-Wienerdiversity index, resulting in a diversity value of 2.92. Comparative analysis of bird speciescomposition from 2008, 2009 and 2020 showed an increase on bird species and families as well as asignificant decrease in the number of individual birds observed. Comparison of Shannon-Wienerdiversity indices in years 2008, 2009 and 2020 show a moderate diversity value across all years. Thediversity index value in 2020 (2.92) is lower than in 2008 (2.94).Keywords: botanical garden, birds, comparative data.
KEHILANGAN HASIL PASCA PANEN KEDELAI PADA PROSES PERONTOKAN MENGGUNAKAN MESIN PERONTOK KEDELAI TIPE MPT001 Lengkey, Jovanka P.; Lengkey, Lady C. Ch. E.; Wenur, Frans
COCOS Vol 4, No 4 (2021)
Publisher : COCOS

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

AbstractThe purpose of this study was to describe the operating conditions and performanceof the soybean thresher MPT001 type during the threshing process, determine the total lossesin threshing process using soybean thresher machine MPT001 and determine the rendemenof soybean thresher machine type MPT001. The results showed that the average enginerotation per minute 639.24 RPM and the average thresher capacity was 33.19 kg/h (grain) at17,8 % moisture content. The results also show that losses of soybean threshing are thoseunthreshed soybean seed at the output hole averaged (5.23 ± 0.26) % and the losses are thoseunthreshed soybean seed that escape the thresher at the rear with stove (2.51 ± 0.81) %.Total loss of threshing used MPT001 type soybean thresher machine is (7.74 ± 0.92) %. Theyields of machine 18.18 %, 18.06 % and 18.93 % respectively with an average of 18.39 %.Key words: soybean, thresher, machine performance, losses, yields
ERODIBILITAS TANAH PADA KAWASAN HUTAN LINDUNG GUNUNG MASARANG Djufri, Ayu Natia H.; Rombang, Johan A.; Tasirin, Johny S.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.34506

Abstract

Abstract This research aims to assess the value of soil erodibility in the Mount Masarang Protected Forest area Rurukan Village, Tomohon City. The research was conducted on 3 types of land cover, namely grasses/reeds land, agricultural land and secondary forests. For each type of land cover, 3 soil samples were taken. Soil sample points were determined purposively, the soil structure was observed and the soil permeability was measured using a permeameter with the constant water level method (Constant Head). Soil samples were analyzed in the laboratory to obtain data on soil texture and soil organic matter content, then K value was calculated according to the USLE method. The results showed that the highest soil erodibility was on agricultural land at 0.37 ton.jam.ft-tonf-1 .in-1 which is classified as a rather high class, while the lowest was on grass/reed land of 0.19 ton.jam.ft-tonf-1 .in-1 belongs to the low erodibility class. Factors causing high soil erodibility on agricultural land were a low clay content, higher silt and lower organic matter so that the soil is more easily eroded.Keywords: soil erodibility, protected forest, Mount Masarang.
ANALISIS SISTEM JARINGAN IRIGASI BENDUNGAN PONTAK KABUPATEN BOLAANG MONGONDOW UTARA DENGAN SISTEM INFORMASI GEOGRAFIS Rivai, Haiqal B.; Rumambi, David P.; Pakasi, Sandra E.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.34919

Abstract

ABSTRACTThe purpose of this study is to analyze the irrigation network system of the PontakDam, North Bolaang Mongondow Regency based on geographic information systems. Themethod used in this research is the method of spatial analysis, namely a field survey by takingseveral measurements whose data is presented in the form of maps, tables and analyzeddescriptively. Information on the irrigation network of the Pontak dam has been presented ina spatial form in the form of a map of the irrigation network of the Pontak dam. The area ofPontak right irrigation network service is 131.63 Ha. If referring to the data from the PUPRService in the field of water resources, North Bolaang Mongondow Regency regarding thearea of rice fields in 2019 of 136.84 Ha, there is a difference in the area of rice fields of 5.21Ha. The index of the physical condition of the Pontak dam irrigation network is 93.44% witha weight of 42.05 infrastructure from a maximum value of 45.00, so routine maintenance isneeded.Keywords : Irrigation Network System, Geographic Information System
Partisipasi Petani Dalam Pemanfaatan Getah Pinus di Hutan Lindung Soputan Melalui Program Hutan Kemasyarakatan (Studi Kasus Pada Kelompok Tani Rin Pamu di Desa Tombasian Atas Kecamatan Kawangkoan Barat Kabupaten Minahasa) Lombok, Malvry I.; Walangitan, Hengki D.; Sumakud, Maria Y.M.A.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.34538

Abstract

ABSTRACTThis study aims to describe the level of participation and analyze the factors that influence the level ofparticipation of Rin Pamu farmer groups in community forestry, especially the use of pine resin. This study uses asurvey method with a closed questionnaire model. Determination of respondents using saturated sampling techniquewith the number of respondents as many as 34 people. Determination of the level of participation using a Likertscale. Furthermore, to analyze the relationship of respondents socioeconomic factors to the level of participationusing Chi Square analysis. The results showed that the level of participation of farmer groups at the planning stagewas moderate. Furthermore, at the stage of implementation and monitoring the evaluation is quite high. The factorsthat influence the level of participation are age and education, while the income factors does not affect the level ofparticipation of farmer groups in the HKm program, especially the use of pine resinin the Mount Soputan ProtectionForest.Keywords: Participation, Pine Sap, Rin Pamu Farmer Group
DESAIN PETA SISTEM IRIGASI TANAMAN PADI SAWAH (ORYZA SATIVA L.) DI DESA BUSISINGO KECAMATAN SANGKUB KABUPATEN BOLAANG MONGONDOW UTARA Karundeng, Indry E,; Rogi, Johannes E.X.; Rumambi, David P.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.35040

Abstract

ABSTRACTThe objectives of this study are 1). Calculate the flow rate of water. 2).Calculate the value of infiltration, percolation, evaporation and evapotranspiration.3). Make an irrigation design map for rice fields. This study uses direct datacollection methods in the field and uses secondary data. Collecting data directly inthe field and using secondary data. The results showed that based on secondarycalculation data, the water discharge value in December was 60.00 m3/second,January 97.5 m3/second and February 95.00 m3/second. Based on the data obtained,the average water loss due to infiltration is 9.64 cm/hour = 2.31 mm/day, percolationis 3.0 mm/hour = 71.9 mm/day and evaporation is 5.78 mm/day. To design anirrigation system, the effective water requirement for irrigating rice fields with anarea of approximately 50ha by reducing the initial water discharge with water lossdue to infiltration, percolation and evaporation by looking at the reference to existingdata, the results obtained are 37.88 m3/second to irrigate the land.Keywords: Irrigation, Map Design of Irrigation System
Perbandingan Mutu Biji Kopi Robusta (coffea canephora) Hasil Pengeringan Secara Pengasapan dan Penjemuran Di Perkebunan Kopi Desa Purworejo Kabupaten Bolaang Mongondow Timur Alhabsyi, Moh Fadel; Lengkey, Lady C. Ch. E.; Ludong, Maya M.
COCOS Vol 4, No 4 (2021)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.34627

Abstract

AbstractThe purpose of this research are 1)Determine changes in moisture content and durationof drying the coffe beans resulting from drying by smoking and drying in the sun. 2)Comparingthe drying rate of coffee beans dried by smoking and drying in the sun, 3)Determine the qualityof coffee beans produced from the drying process by smoking and drying in the sun. The result ofthis study showed coffee beans that are dried by smoking and drying can produce good qualitycoffee beans. Coffee beans dried by smoking 11.04% moisture content, 9 hours of drying time,5.79% drying rate, 82.75 coffee quality. Coffee beans dried by drying 12.68% moisture content,23 hours or 6 days of drying time, 2.20% drying rate, 80.75 coffee quality.Key words: determine quality, drying robusta coffee beans, smoking and sun drying,coffee beans.Email respondensi: Fadelalhabsyi97@gmail.com

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