Article Per Year (5 Year)
p-Index From 2021 - 2026
3.469
P-Index
This Author published in this journals
All Journal Jurnal Bios Logos Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Teknologi Pertanian (Agricultural Technology Journal) Journal of Agriculture (JoA) COCOS
Ruland Rantung
Program Studi Teknik Pertanian, Jurusan Teknologi Pertanian Fakultas Pertanian UNSRAT
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Physics

Published : 27 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 18 Documents
Search
Journal : COCOS

 1   2 
KERUSAKAN MEKANIS BUAH PEPAYA (Carica Papaya l.) DENGAN MENGGUNAKAN ALAT SIMULATOR MEJA GETAR Elivia Salulinggi; Ireine A. Longdong; Stella M.E. Kairupan; Ruland A. Rantung
COCOS Vol. 4 No. 4 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.4481

Abstract

ABSTRACTPapaya ( Carica papaya L ) is a fruit that comes from the tropical regions of the Americas that werethen distributed to various places by the Portuguese and Spanish, including India and other tropicalcountry. This research aims to study the mechanical failure vibration style fruit such as papaya, bruises,abrasions and scratches during transport of the simulation process. And to study the changes in color andhardness levels papaya fruit after 3 days of storage. The first phase of the research observes andmechanical damage by observing the appearance of the fruit papaya fruit surface abrasions and bruisesas a result of the transport simulation. after 3 days of storage of papaya fruit appearance began tomalfunction which can no longer be consumed by consumers. Papaya fruit texture changes beforesimulation on the green mature namely: 7.26 kg/cm2, the half-baked 4.5 kg/cm2, while the cook full 1.9kg/cm2. After 3 days of storage the texture of ripe green papaya decreased hardness is 4.26 kg/cm2, halfcook 2.33 kg/cm2 and 1.45 kg/cm2 fully ripe. Discoloration on papaya fruit increased after 3 days ofstorage, the green ripe 40.82 (+) half- ripe 48.37 (+) and fully ripe 57.89 (+). While vibration for 15minutes resulted in a full ripe papaya fruit suffered abrasions, bruises nearly all papaya fruit surface .Keywords : Papaya fruit, mechanical damage, the amount of vibration .
UJI TEKNIS BIOGAS DARI BAHAN BAKU FESES SAPI DI DESA TOTABUAN KECAMATAN LOLAK KABUPATEN BOLAANG MONGONDOW Batin E. Tuwuilu; David P. Rumambi; Ruland A. Rantung; Herry F. Pinatik
COCOS Vol. 4 No. 5 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i5.4766

Abstract

ABSTRACTEnergy is a crucial global issue. Demand for energy increases every year. According todata collected by the Ministry of Energy and Mineral Resources (2006) Indonesia’s oilsupply amounts to a mere 9 billion barrels, which will run out with continued consumption.To decrease dependency on fossil fuels, the government has issued Peraturan PresidenRepublik Indonesia number 5 year 2006 about National Energy Policies to developalternative renewable energy resources. Energy experts around the world are now researchingand developing renewable energy, one of which is biogas. This research is done in Totabuanvillage, district of Lolak, Bolaang Mongondow regency, using experimental methods withdescriptive analysis of the formation of biogas using biodigester technology with a permanent12 m3 dome-type reactor. Biogas started forming on the 9th day, up to the 26th day, with 12m3 of raw materials, which is a 1:1 mix of cow feces with water (6 m3 cow feces and 6 m3water), and yielded 4,68 m3 of biogas that can be used to cook for 12,3 hours. Each 1 m3 ofbiogas can be used to cook for 2,63 hours. Biogas yield is 39%Keywords: Energy, Renewable, Biodigester, Biogas.
UJI TEKNIS TRAKTOR KUBOTA TIPE M9540 PADA PENGOLAHAN LAHAN KERING DI KELURAHAN WAILAN, KOTA TOMOHON Gabriela A. Assa; Ruland Rantung; Robert Molenaar; Daniel P.M. Ludong
COCOS Vol. 5 No. 4 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i4.6586

Abstract

ABSTRACTSoil tillage aims to create physical soil condition suitable for plant growth. It does that by improving soil water and air association as well as water movement in soil. Mechanical soil tillage requires lots of energy; therefore, good tillage practice needs to carefully consider a proper soil condition in order to get the required result. A technical test to Kubota tractor type M9540 with 95 horsepower was done in this research, as it has never been done before in specific soil condition, topography, and climate of the North Sulawesi. The objectives of this research were to measure aspects of effective field capacity and field efficiency, fuel consumption, to calculate tillage cost and tractor Break Even Point. Soil tillage results were also evaluated by measuring soil bulk density, water infiltration and moisture content before and after tillage. The test was done by cultivating the dry land through performing primary and secondary tillage, each was carried out in three replications. The results show that average effective field capacity for first primary tillage was 1.55 m2/second (0.56 ha/hour), second primary tillage was 1.75 m2/second (0.63 ha/hour), and the secondary tillage was 2.72 m2/second (0.98 ha/hour) with average field efficiency was 77.40%, 80.72%, and 56.17% respectively.Total time to complete the first and second primary tillage was 0.11 hour and 0.10 hour, with diesel fuel consumption of 64.17 liters/ha, and 55.44 liters/ha. The secondary tillage required 0.06 hour and fuel consumption of 28.72 liters/ha.The primary and secondary tillage were found to influence the soil moisture content, bulk density, and rate of water infiltration. Tillage basic cost is calculated as Rp.1.765.683 /ha to result a hire charge of Rp. 1.942.251 /ha, and the tractor break-even point was found to be 552 ha/year.Keywords: Tractor, tillage
PENENTUAN MUTU BRIKET BIOARANG DARI BAHAN BAKU LIDI IJUK DAN SERUTAN KAYU * Gebbi Y. Ngajow; Daniel P.M. Ludong; Freeke Pangkerego; Ruland A. Rantung
COCOS Vol. 7 No. 6 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i6.13884

Abstract

ABSTRACTThis study aimed to evaluate the briquet quality made of palm leaf-rib from sugar palm plant and wood shavings based on the water content, ash content and briquet burning capacity as well as to determine the best quality of briquet based on the water and ash content.The results of this descriptive study showed that the highest water content was observed in the palm leaf-rib briquet (12,68 %) and the lowest was in the briquet made of 66,67 % palm leaf-rib and 33,33 % wood shavings (2,58 %). The highest ash content was in the briquet made of 100 % wood shavingsKeywords ; briquet, palm leaf-rib, sugar palm plant, wood shavings, quality
EFISIENSI LAPANG ALAT TANAM BENIH LANGSUNG (TABELA) PADI SAWAH DENGAN MENGGUNAKAN TRAKTOR TANGAN SEBAGAI TENAGA TARIK Feryatmono O. Geso; Ruland Rantung; Daniel P M. Ludong
COCOS Vol. 10 No. 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i3.20869

Abstract

ABSTRACTThis study aimed to calaulete the field efficiency of direct seed planting equipment (Tabela) using a hand tractor as a pulling tool. The field evaluation was conducted on an area of 120 m2 that was divided into 3 plots. In this study the distance between planting rows was 20 cm, the legowo rows distance was 40 cm the average of planting depth was 1,4 cm, the the seed number each hole was 3-7 seeds and the average was 4 seeds. The results showed that the field efficiency was 53,53 %. This direct seed planting equipment reduced the number of labors and working time.  Keywords : Tabela tool, Hand Tractor, Legowo
KAJIAN UJI KINERJA ALAT TANAM KEDELAI IRF-01 Isak T. Sulle; Ruland A. Rantung; Freeke Pangkerego
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25025

Abstract

ABSTRACT       This study aims to design and make a soybean planting tool with aspects that need to be considered such as planting conditions, number of seeds per planting hole, planting distance, seed conditions when planted, and planting efficiency. The expected outcome of this research is that it can produce soybean planting tools that can be used by farmers and academics to support government programs in increasing national soybean production.      The process of designing and manufacturing tools was carried out at the Agriculture Technology laboratory and planting or testing the performance of the tools carried out in the Unsrat village of Wailan experimental village in North Tomohon District. This research began from April 8 to May 20 2019 for the manufacture of tools and the planting process was carried out on May 22, 2019 using a planting tool that had been made with a hand tractor as a towing force and 3 weeks of observation of growing soybeans. The soybean varieties grown are Dega 1 soybean variety which is the best variety according to 2017 R & D data.      Data obtained after the process of planting and observing soybeans for 3 weeks was in the form of field efficiency data of 81.57%. with the percentage of seeds growing 61.59% and the percentage of seeds not growing 38.41%. The total percentage of seed growth is closely related to the performance of the tool because the tool still has a deficiency in the metering device that has a gap with the hopper resulting in the seeds entering the gap breaking and unable to grow when planted.  Keywords : Soybean planting tools, Spacing, Dega 1, Growing seed percentage, Field efficiency, Metering device
UJI TEKNIS ALAT TANAM JAGUNG (Zea mays L.) TIPE TP CSM 15 DENGAN MENGGUNAKAN TRAKTOR TANGAN SEBAGAI ALAT PENARIK1) Idhansyah .; Ruland A Rantung; Daniel P. M Ludong
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25027

Abstract

ABSTRACT      This study aims to test technically the corn seeds planter (Zea mays L.) type TP CSM (Corn seeding machine) 15 using the hand tractor as a pulling device on the plot of the land 30 m x 10 m. The test results of TP CSM 15 corn seeds planter in 30 m x 10 m plot of the land on 3 field tests with soil treatment got the average effective field capacity of 0,30 ha/hour, the average theoretical field efficiency of 0,47 ha/hour, and the average field efficiency of 64,20 %. The average distance between planting rows is 73,2 cm and the average distance in row planting is 28,4 cm. The number of seeds per planting hole 1 – 3 with an average of 1 seed per planting hole and an average planting depth of 5.5 cm. The percentage of seeds which grew successfully by an average of 75,74% and the percentage of seeds which unsuccessfully to grow by an average of 24,26%. Keywords : TP CSM 15, Hand Tractor, Field Efficiency.
ANALISIS KELAYAKAN AIR DAS TALAWAAN SEBAGAI SUMBER AIR IRIGASI Stehvani Regina Sigar; David P. Rumambi; Ruland A. Rantung
COCOS Vol. 11 No. 4 (2019): EDISI OKTOBER-DESEMBER 2019
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i3.29660

Abstract

ABTRACTThis research aims to determine the feasibility of the Talawaan river basin as a source ofirrigation water in the Talawaan weir based on electrical power (DHL), adsorption ratio(SAR/Sodium Adsorption Ratio), boron, pH, mercury and cyanide. This research was conductedin the Talawaan weir North Minahasa Regency, in the Baristand Laboratory (Industry Researchand Standardization Hall) and the Water Laboratory Nusantara (WLN). Sampling is purposive atfive point of sampling location with two repetitions, during drought (period I) and during rain(period II) so that samples amounted to 10 samples. The measurement results obtained from thelaboratory compared with the criteria of the quality raw irrigation water in a descriptive. Theresults showed that the six variables measured were still below the maximum level of qualitystandards so that water is categorized worthy of use as water for irrigation.Keywords: quality of irrigation water, DHL, SAR, Boron, Mercury, Cyanide
UJI UNJUK KERJA ALAT IRIGASI SPRINKLER TIPE GUN RAIN DN-50 DI DESA TONTALETE KECAMATAN KEMA KABUPATEN MINAHASA UTARA Meike C. Kusaly; Ruland A. Rantung; Dedie Tooy
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.v5i5.35391

Abstract

Abstract This study aims to test the performance of irrigation sprinkler type gun rain DN-50, and how to manage water efficiently and effectively through the use of pressurized irrigation technology on plantation land located in Tontalete Village. This study uses tools such as sprinklers and water pumps on soybean plantations in Tontalete Village with an area of 60m x 60m. The results of this study indicate of watering using irrigation sprinkler the type Gun Rain DN-50 at the Village Tontalete for 19 minutes with 3 rounds of sprinkler produces 3.254 l and wet land 1808.64 m2, uniformity coefficient values indicating that the level of use watering sprinkler less efficient, the low rotational value of the pump (rpm) that is not in accordance with the specifications, and the sprinkler transmission distance which only reaches 24 m. Keywords: performance test,tools of irrigation, sprinkler, water supply, coefficient uniformity.
UJI KINERJA ALAT IRIGASI SPRINKLER TIPE BIG GUN 1,25 INCI DI DESA TONTALETE KECAMATAN KEMA KABUPATEN MINAHASA UTARA Novianti Nari; Ruland A. Rantung; Dedie Tooy
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.v5i5.35470

Abstract

Abstract Sprinkler irrigation is the provision of water to crops by spraying water into the air, so that the plants get water from above like rain. The principle used by this system is to put pressure on the water in the pipe and emit it into the air so that it resembles rain and then falls on the ground. The purpose of this study is to test the performance and calculate ef iciency and uniformity of water supply by using irrigation sprinkler of the type big gun 1.25 inch. The method used is an experimental method and a descriptive analysis method, which focuses on performance testing using a irrigation unit sprinkler of type Big Gun 1.25 inch. This study uses several components of equipment such as a spinkler, water pump and hose on the plantation land of Tontalete Village with an area of 40 m x 40 m. The variables observed in this study include: water discharge, pump rotation (rpm), uniformity coef icient (CU), jet distance, and pump fuel use. The results of this study indicate that the provision of irrigation water sprinkler using a sprinkler Big Gun 1.25 inch and MGP pump 50 HD, with a round of sprinkler 3 times round the that produces a time for 12 minutes, the sprinkler can remove as much water as 77.46 l / min and irrigate the land area of 1,017 m2 with an average speed of rotation pump 2,008 rpm and spent as much as 280 ml of pump fuel/12 minutes. The farthest distance thewater sprinkler emits is 18 m. Keywords: performance test, irrigation, sprinkler, radiance, water discharge
Co-Authors Amelia, Putri Batin E. Tuwuilu Cindy Tamberongan Dahlan Daniel Ludong Daniel P M. Ludong Daniel P. M Ludong Daniel P.M. Ludong David P Rumambi David P. Rumambi David P. Rumambi Dedie Tooy Dewinta Lantang Elivia Salulinggi Erna Marlina Piri Esar Rante Kayangan Feryatmono O. Geso Freeke Pangkerego Freeke Pangkerego, Freeke Gabriela A. Assa Gabriela Ruth Zulfikar Zulfikar Gebbi Y. Ngajow Herry F. Pinatik Herry Frits Pinatik Idhansyah . Ireine A. Longdong Ireine Adriana Longdong Isak T. Sulle Johansen Sinulingga Junita . Kalesaran, Leo H. Lady C. Ch. E. Lengkey Lantang, Dewinta Leo H. Kalesaran Leo H. Kalesaran Leo Kalesaran Longdong, Ireine Adriana Lucia Cecilia Mandey Ludong, Daniel P. M. Manoppo, Yesica Febriani Meike C. Kusaly Ngajow, Gebbi Y. Novianti Nari Pangaila, Shilviana Sischa Pangalila, Nova D. E. Pinatik, Herry Frits Robert Molenaar Rumambi, David P Stefy Wagiu Stehvani Regina Sigar Stella M.E. Kairupan Virsawan Paputungan