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All Journal EUGENIA Jurnal Ilmu dan Teknologi Pangan Jurnal Teknologi Pertanian (Agricultural Technology Journal) Jurnal Agroekoteknologi Terapan COCOS
Robert Molenaar
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Agriculture, Biological Sciences & Forestry Computer Science & IT Environmental Science

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ANALISIS OPTIMASI USAHATANI KELOMPOK TANI PAJALE (PADI, JAGUNG DAN KEDELE) DI KABUPATEN MINAHASA SELATAN Christian M. Sumampouw; Prof.Dr.Ir. Robert Molenaar,MS.; Dr.Ir. Dedie Tooy, MSi.
COCOS Vol. 8 No. 2 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.14876

Abstract

ABSTRACT Geographically, South Minahasa district lies between 1 ° 17'18.22 "north latitude and 124 ° 54'48.84" east longitude, with a total area is 1188.67 km2, or approximately 8% of the total area of North Sulawesi (15.069.00 km2 ), with the coast in the north and south and the high plains, where irrigated rice fields provide an abundant harvest. Nature and the weather in this area is suitable for agricultural. At almost all districts  various agricultural crops can grow. Rice cultivation is mostly irrigated, in addition there is still also a rainfed. Planting is done two to three timesa year  and sometimes rotated withother food  crops. Food crops cultivated by the inhabitants consist of rice, corn, potatoes, and other food crops as well as various other horticultural crops. Besides Rice, South Minahasa also produces maize and cassava in relatively large quantities. Thus, the food crop farmers in South Minahasa can choose from various types of crops that can be cultivated in their agricultural lands. This study was conducted in August until September 2016 in South Minahasa regency. Required data were collected using survey methods, and analyzed with linear programming method using  solver application in Microsoft excel. Based on the research results, if the labor supply increased by 2 per family farmers and harvesting is done by machines  the farmer income per year increased from Rp 720 million, - to Rp 1.84 billion, - obtained from the cropping pattern of 15 hectares rice and 10 hectares corn for Musafir 4 farmer groups. the same goes for the Torout Jaya farmer groups, revenue per year increased from Rp 582 million, - to Rp 2.3241 billion, - which is obtained from the cropping pattern 17 hectares of rice and 20 hectares of soybeans.  Keywords : Optimization Farming, Linear Programming, Solver
MODEL SISTEM PAKAR DALAM MENGIDENTIFIKASI PERMASALAHAN PADA JARINGAN IRIGASI PERTANIAN DI BENDUNG TALAWAAN Richard A.V. Koloay; David Rumambi; Robert Molenaar
COCOS Vol. 10 No. 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i3.20871

Abstract

ABSTRACT  This study aims to obtain information about the problems that occur in irrigation networks at the right part of Talawaan dam and produce a computer application model as an expert system. It is hoped that this expert system application can be useful to provide information about the problems that occur in the irrigation network in Talawaan dam, especially on right Talawaan irrigation networks and can provide solution of the problem through an expert system application that can be accessed by each user. This research was conducted in the Technical Laboratory of Agricultural Faculty of Agriculture Technology Department of UNSRAT and in Talawaan dam, Talawaan Subdistrict, North Minahasa Regency, North Sulawesi Province, and divided into two stages: irrigation network data collection and expert system application development.  Data collection on right Talawaan dam is done by calculating inflow water discharge and outflow water discharge and evaporation on primary, secondary and tertiary channel then documentation on problems that occur on irrigation channel. There is a water loss of 0.187 m3 / sec on the primary channel, 0.213 m3 / sec of water loss in secondary channels, and water loss of 0.074 m3 / sec on tertiary channels. Factors that cause water loss include the problem of damage to irrigation channels, garbage accumulation, illegal water taking, and silting of channels by mud. With this expert system, users can get information on problems that occur on irrigation channels and can consult to find solutions to the problem.  Keywords: Irrigation Network and Expert System
ANALISIS ENERGI DALAM PROSES PENGOLAHAN KOPRA RAKYAT Gerson Wohon; Dedie Tooy; Robert Molenaar
COCOS Vol. 10 No. 3 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.22599

Abstract

Abstract  This study aims to determine the energy sources at the stage of the copra processing commonly made by the people, to measure the amount of energy used at each stage of the people's copra processing process, to calculate the total energy used eachs of was obtained by means of energy analysis surveys. The resulting data consists of primary and secondary data.  The total input energy in the process of people's copra is more than twice the amount of output energy contained in the copra produced (870,840 kcal). This condition indicates the need to improve the efficiency of the copra processing process in energy utilization.. Keywords: Energy of coconut fiber, human energy, livestock energy.
SISTEM INFORMASI BERBASIS WEBGIS JARINGAN IRIGASI PERSAWAHAN POPONTOLEN KECAMATAN TUMPAAN KABUPATEN MINAHASA SELATAN Benny .; Robert Molenaar; Sandra E. Pakasi
COCOS Vol. 11 No. 2 (2019): EDISI APRIL-JUNI
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.27294

Abstract

ABSTRACT This study aims to create an application of geospatial information on irrigation networks in Popontolen Village that supports the online monitoring and maintenance of irrigation networks based on WebGIS. This information system can be built using computers with low specifications and is supported by easy and free software (open source). This WebGIS design utilizes the framework of QGIS and the Bootstrap framework for the overall appearance of WebGIS, both of which have a programming language for displaying WebGIS. By utilizing free hosting services that are available, this WebGIS prototype can be accessed by internet users by typing the URL in the address bar https://sijaripopontolen.000webhostapp.com/index.html. And can be displayed on various devices both desktop and mobile-based. Keywords : Irrigation Networks,
ANALISIS ENERGI PADA PENGERINGAN PARING DI PT. ROYAL COCONUT AIRMADIDI Yulian Sagrim; Prof. Ir. Robert Molenaar, MS, PhD; Dr. Ir. Frans Wenur, MS
COCOS Vol. 12 No. 1 (2020): EDISI JANUARI-MARET 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i5.30055

Abstract

ABSTRACTThis study aims to identify the use of energy sources at the stage of the paring process,calculate the total energy used at the stage of the paring process and calculate the energyefficiency in this case, the efficiency of drying at the paring drying process. From the results ofthis study found the total energy used for paring drying at PT. Royal Coconut Airmadidi of22,808,070,020,500 joules. While the drying efficiency was found to be 33.2%, it means that outof 100% of the energy expended, only 33.2% was actually used in the paring drying process.Keywords: Energy Analysis, Paring Drying.
ANALISIS EKONOMI MESIN PERONTOK (POWER THRESHER) KEDELAI TIPE MPT 001 Putria G. Rompas; Robert Molenaar; David P. Rumambi
COCOS Vol. 13 No. 3 (2021): EDISI JULI-SEPTEMBER 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
ANALISIS EKONOMI MESIN PENGOLAH NIRA AREN MENJADI GULA SEMUT DI KELOMPOK TANI KARYA TANI DI DESA TALAITAD Nikita V. Momongan; Robert Molenaar; Esry O. H. Laoh
COCOS Vol. 13 No. 3 (2021): EDISI JULI-SEPTEMBER 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
UJI KINERJA MESIN PENGOLAH GULA SEMUT HORJA MPN20 DI KELOMPOK TANI KARYA TANI DESA TALAITAD KECAMATAN SULUUN TARERAN KABUPATEN MINAHASA SELATAN Stenli F. E. Pomantow; Lady C. Ch. E. Lengkey; Robert Molenaar
COCOS Vol. 13 No. 4 (2021): EDISI OKTOBER-DESEMBER 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i5.35468

Abstract

Abstract The purpose of this study is to evaluate the performance of palm sugar processing machine HORJA MPN20 including temperature conditions, product yield, energy consumption and energy efficiency of palm sugar processing machine HORJA MPN20 located in the farmer group Karya Tani. The results showed that the average fire temperature in the first to third experiments was 205.30ËšC, 214.4ËšC, and 240.4ËšC, respectively. The yields in the first to third experiments were respectively 9.47%, 10.40%, 11.03% with an average of 10.30%. Gas energy consumption in the first to third experiments were 136,533,62 kJ, 136,533,62 kJ, 141,241.68 kJ with an average of 138,102,98 kJ. The consumption of electrical energy in the first to third experiments were 711.48 kJ, 323.40 kJ, 662.97 kJ with an average of 565.95 kJ. Human energy consumption in the first to third experiments were 502.08 kJ, 313.8 kJ, 376.56 kJ with an average of 397.48 kJ. The energy efficiency of the engine in the first to third experiments was respectively 44.56%, 44.29%, 42.39% with an average of 43.75%. Key words: palm sugar, processing machine , performance, efficiency
ANALISIS EKONOMI PENGGUNAAN ALAT PENYULINGAN NIRA AREN MENJADI BIOETANOL DI KELOMPOK TANI HUTAN TEYAPU DI DESA TALAWAAN KECAMATAN TALAWAAN KABUPATEN MINAHASA UTARA Novan G. Sumampow; Robert Molenaar; Frans Wenur
COCOS Vol. 14 No. 1 (2022): EDISI JANUARI-MARET 2022
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.35716

Abstract

ABSTRACTThe purpose of this study is to calculate what the total cost per hour at each nira arendistillery, and also to calculate the economic feasibility value of the distillation tool The benefitof this study is to provide information on the total cost per hour and economic feasibility ofoperating a distillation tool or distillery nira aren into bioethanol. The results of this studyresulted in a total cost of Rp. 69,721 / hour, and the results of the Break Even Point (BEP)calculation based on working hours of 1,456 / year were 6756.60 liters / year or equivalent toRp. 19,785,287 / year. Feasibility analysis based on Net Present Value (NPV) calculations wasobtained at Rp.293,576,173.87, and Internal Rate of Return (IRR) of 63%, and Benefit/CostRatio (B/C Ratio) of 1.36.Keywords : Economic Analysis of The Use of Nira Aren Distillery Into Bioethanol
KAJIAN SIFAT FISIK KEDELAI VARITAS ANJASMORO DI DESA LOLAH KECAMATAN TOMBARIRI KABUPATEN MINAHASA Johsi R. Rawung; Lady C. Ch. E. Lengkey; Robert Molenaar
COCOS Vol. 15 No. 1 (2023): EDISI JANUARI-MARET 20223
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.43064

Abstract

ABSTRACT The purpose of this study was to measure the dimensions of length, width, and thickness of soybean seeds at (two) different moisture content at 14% moisture content at harvest and 9% after drying, as well as determine the arithmetic diameter and geometry of soybean seeds, calculate the weight of 1000 soybean seeds in ( two) different moisture content, namely water content at harvest 14% and after drying 9%, calculating roundness, bulk angle and friction angle of soybean seeds at (two) different moisture content at water content at harvest 14% and after drying 9%, and determine the bulk angle and friction angle of soybean seeds at (two) different moisture content at 14% water content at harvest and 9% after drying. The research method was carried out by the experimental method. Data were collected on soybean seeds with 2 levels of moisture content, namely the water content after threshing (14%) and after drying (9%). From the results of this study, the average length, width, and thickness of soybean seeds of the Anjasmoro variety were soybean seeds at 9% moisture content, respectively 7.54 mm, 6.21 mm, 5.04 mm, and at water content 14% respectively 7.70 mm, 6.22 mm, 5.07 mm, obtained an average weight of 100 soybean seeds 16.10 g. The average weight of 1000 soybean seeds is 161 g, the bulk angle of soybean seeds at 9% moisture content ranges (23.2 – 25.4) with the average value of soybean seeds at 9% moisture content and 14% moisture content ranging from ( 19.25º). The lowest bulk angle of soybean seeds was at 9% and 14% moisture content (20.03º – 18.05º) with an average value of soybean seeds 9% and 14% (18.58º – 20.09º) and the highest bulk angle of soybean seeds was at moisture content 9% and 14% (23.01º – 23.00º) the average value of soybean seeds 9% and 14% (21.29º – 21.08º). The average friction angle of soybean seeds at 9% moisture content (14.10º) and the average soybean seed at 14% moisture content (17.01º).
Co-Authors A.A. Ketut Agung Cahyawan W Andreas R. Pinontoan Andreas R. Pinontoan, Andreas R. Benny . Christian M. Sumampouw Dahlan Daniel P. Ludong Daniel P. Ludong, Daniel P. Daniel P.M. Ludong David P. Rumambi David Rumambi Dedie Tooy Dr. Ir. Frans Wenur, MS Edi Suryanto Esry O. H. Laoh Frans Wenur Gabriela A. Assa Gerson Wohon Gregoria S. S. Djarkasi Handry Rawung Herry F. Pinatik Hildy Wullur Ireine A. Longdong Jhiro Christian Mailool Joel Irianto Arring Johsi R. Rawung Lady C Ch E Lengkey Lady C. Ch. E. Lengkey Lady Lengkey Lexi M. Pendong Lexi M. Pendong, Lexi M. Lucia Cecilia Mandey Manongko, Patricia Syaron Mikael, Florensi Wahyuni Momongan, Fransiska Oktavia Nikita V. Momongan Novan G. Sumampow Paembonan, Fijar Y. Putria G. Rompas Richard A.V. Koloay Rompas, Krisye Sharon Ronal Lumba Roni Wakur Roni Wakur, Roni Ruland A. Rantung Ruland Rantung Sandra E. Pakasi Stenli F. E. Pomantow Yulian Sagrim