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All Journal Jurnal Teknologi Pertanian (Agricultural Technology Journal) Journal of Agriculture (JoA) COCOS
Ruland A. Rantung
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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.
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
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
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
RESPON PERTUMBUHAN DAN PRODUKSI TANAMAN MENTIMUN (CUCUMIS SATIVUS L) YANG DITANAM PADA BEBERAPA UKURAN VOLUME MEDIA TANAM DALAM POLYBAG DENGAN TEKNIK IRIGASI TETES Virsawan Paputungan; Leo H. Kalesaran; Ruland A. Rantung
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.v1i1.43099

Abstract

ABSTRACT This study aims to: 1. To measure the optimal amount of water use by the method of giving irrigation water, 2. To observe the relationship between the volume of planting media and the amount of irrigation water in cucumber plantations. This study was designed as an exploratory experimental research technique. Experiments were carried out on 5 polybag sizes/volume of planting media and each was repeated 3 times. The variables observed were the provision of water, number of leaves, number of fruit, fruit weight and shape of the root crown. The results of this study were 1. as much as 128,500 ml = 128.5 liters per plant, it turned out to be able to support and produce cucumber plants planted in polybags with the best production shown in experiments using 9 liter polybag sizes, 2. there was a positive response of plants to the treatment method drip irrigation and the amount of water given, and also showed a consistent relationship between plant vegetative growth (number of leaves) and the number and weight of fruit produced, namely the more leaves produced, the longer the roots and the width of the roots produced, the higher the number and the weight of the resulting fruit, where the highest production was achieved in the P5 treatment with an average number of 10 fruits/pot with a weight of 6,149 -6,354 kg. key words ; Cucumber, size of planting mediain polybag, drip irrigation.
PERANCANGAN DAN UJI KINERJA SPRINKLER SEDERHANA Esar Rante Kayangan; Ruland A. Rantung; Leo Kalesaran
COCOS Vol. 15 No. 2 (2023): EDISI APRIL-JUNI 2023
Publisher : Universitas Sam Ratulangi

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

Abstract

AbstractSprinkler irrigation is a way of watering plants by spraying water into the air andfalling on the ground to resemble rain. Sprinklers are generally applied to commodities withhigh economic value, so sprinkler prices are also quite expensive. Sprinklers currentlycirculating in the market are sold in various models, some can rotate 180 to 360 degrees withdifferent beam distances. The purpose of this research is to design and manufacture a simplesprinkler prototype and examine the performance of the sprinkler prototype that is made. Themethod used is the experimental method and the descriptive analysis method, which focuseson performance testing using the prototype sprinkler that is made. This study used severalcomponents of the equipment such as 6 sprinklers , water pumps and piping networks in aland area of 18 m × 12 m. The variables observed in the study included: water discharge,pump rotation (rpm), uniformity coefficient (CU), jet distance, use of pump fuel. The resultsof this study indicate that the application of sprinkler irrigation water uses 6 sprinklerprototypes that were made and a Korobe WR 20X water pump, with a time of 2 minutes, 6sprinklers can release 154.12 L/minute of water with an average pump speed of 3,758. 33RPM and spent as much as 45 ml/minute of fuel. The farthest distance of the sprinkler beamis 3.5 meters.Keywords: design, performance test, sprinkler, radiance, water discharge
Co-Authors Batin E. Tuwuilu Dahlan Daniel P.M. Ludong David P. Rumambi Dedie Tooy Elivia Salulinggi Esar Rante Kayangan Freeke Pangkerego Freeke Pangkerego, Freeke Gebbi Y. Ngajow Herry F. Pinatik Ireine A. Longdong Isak T. Sulle Kalesaran, Leo H. Leo H. Kalesaran Leo Kalesaran Ludong, Daniel P. M. Meike C. Kusaly Ngajow, Gebbi Y. Novianti Nari Pangaila, Shilviana Sischa Pangalila, Nova D. E. Robert Molenaar Stehvani Regina Sigar Stella M.E. Kairupan Virsawan Paputungan