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Leo Kalesaran
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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

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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
KAJIAN PENGGUNAAN CULTIVATOR TIPE MOTOYAMA MTE 70NL UNTUK PENGOLAHAN TANAH DI LAHAN KELOMPOK TANI SYALOM DESA PINASUNGKULAN KECAMATAN MODOINDING Junita .; Ruland Rantung; Leo Kalesaran
COCOS Vol. 15 No. 2 (2023): EDISI APRIL-JUNI 2023
Publisher : Universitas Sam Ratulangi

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ABSTRACTThe Cultivator Motoyama MTE 70NL is an agricultural tool and machine provided by theGovernment of South Minahasa Regency for farmer groups in Modoinding District, for thedevelopment of upland projects. This cultivator is used for secondary tillage. Meanwhile, it isnecessary to know the performance of the tools distributed to farmers, so a study is needed tounderstand how the performance of the Motoyama MTE 70NL cultivator is like for tillage bothin conditions without rain and in rainy conditions. Rain conditions are used as a parameter tocompare cultivator performance with conditions without rain. In the treatment of soil conditionsafter rain, the calculation of rainfall is not carried out, even so after the rain is adjusted to the soilconditions, if the soil is too wet, it will be waited until the soil conditions can be processed. Thepurpose of this study was to analyze the performance of the Motoyama MTE 70NL typecultivator for tillage in 2 treatments, namely treatment 1 on soil conditions without rain andtreatment 2 on soil conditions after rain. The area of research land used is 5m x 30m on a flatexpanse. The variables observed in this study include: depth of tillage layer, speed, workingwidth of the tool, travel time, head land, fuel oil, and tool rpm. The results of this study indicatethat tillage using the Motoyama MTE 70NL cultivator in the first treatment resulted in a traveltime of 12.49 minutes, a head land of 49 seconds, fuel oil 213.14 ml, a depth of tillage layer of30 cm. In the two treatments, the travel time was 13.13 minutes, the head land was 50 seconds,the fuel oil was 219 ml, and the depth of the tillage layer was 30 cm. The engine RPM is 2,416.2r/min and the slow rotary gear rpm is 74.4 r/min. In treatment 1 KLT 0.074 ha/hour, KLE 0.071ha/hour, EL 95.94%. In treatment 2 KLT 0.074 ha/hour, KLE 0.069 ha/hour, EL 93.24%.Keywords: Cultivator, Soil Processing
RELEVANSI EVALUASI PENGELOLAAN DAERAH IRIGASI TALAWAAN MERAS PROVINSI SULAWESI UTARA Friska Anastasya Saki; Leo Kalesaran; David P. Rumambi
COCOS Vol. 15 No. 2 (2023): EDISI APRIL-JUNI 2023
Publisher : Universitas Sam Ratulangi

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AbstractThe objectives of this research were:: 1) to obtain information about evaluationin the Talawaan Meras Irrigation Area, 2) To evaluate the Management of IrrigationNetworks in the Talawaan Meras Irrigation Area. This research was carried outdirectly in the field and data collection was carried out using survey methods andinterviews with several selected respondents, as well as measurement/calculation ofthe characteristics of variables related to irrigation networks carried out directly onthe research object. The conclusions from this study are (1) The research location ofMS.3.Kr, which was originally 20 ha for rice fields, now the designation is no longerrice fields, but inland fisheries. (2) Measurement of water discharge in the secondarychannel at the MS.3.Kr location uses the float method, and the average dischargeobtained is 0.16 m^3/second. (3) The existing irrigation structures in the TalawaanMeras Irrigation Area are all in good condition and can function properly. (4) Theplanting season determined by the Agriculture Service is not in accordance with thefacts on the ground. (5) In the last 2 years, performance evaluation in the TalawaanMeras Irrigation Area on MS.3.Kr has not been carried out properly due to a lack ofoperational funds. Funds that should have been there have been focused on Covid-19funds. (6) There are 9 irrigation network officers in Talawaan Meras, but not all ofthem are active. At the MS.3.Kiri location, there is only one irrigation network officerwho has taken over all the tasks at that location.Keywords : evaluation, irrigation area management, Talawaan Meras