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COCOS
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Articles 10 Documents
Search results for , issue "Vol 1, No 4 (2019)" : 10 Documents clear
KAJIAN SIFAT FISIK TANAH PADA TANAMAN BAYAM (Amarantus Sp.) DI DESA KALASEY KECAMATAN MANDOLANG KABUPATEN MINAHASA Taplo, Melianus; Supit, Joice M.; Pakasi, Sandra E.
COCOS Vol 1, No 4 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.24279

Abstract

ABSTRACT Research has aimed to study the characteristics of physical soil on spinach (Amarantus Sp.) at Kalasey Village, Mandolang Sub-District, Minahasa Regency. Method has use for analysis was tabularis and for sampling was composite than analyzed to the laboratory for some variables such as: soil texture, permeability, and soil water content. Results have shown that the characteristics of physical soil were: texture (silty sand), permeability (rather fast) and the soil water content (well), so that these result were suitable for the growth requirements of spinach. Keywords : Physical Soil and Spinach.
PENGARUH PENGEMASAN VAKUM TERHADAP KERUSAKAN BIJI JAGUNG (Zea mays L.) Basriadi, Novia; Lengkey, Lady Corrie E. Ch.; Wenur, Frans
COCOS Vol 1, No 4 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.24165

Abstract

ABSTRACT The main problem during corn storage is the attack of insects and fungi. Packaging is one way to overcome this problem. The purpose of this study was to determine the initial and final moisture content of vacuum-packed corn kernels, without vacuum packaging and without packaging, as well as to calculate damage to dried corn during storage. The research method was the experimental method of Completely Randomized Design (RAL) using three treatments: vacuum packaging, without vacuum packaging and without packaging. Then the material is stored for two months at room temperature. The results showed that the lowest damage percentage of corn seeds stored at an average room temperature of 27.7oC was obtained in a vacuum packaging treatment with insect damage rate of 6.31%, fungal damage of 8.96%, with an average moisture content average of 14.19%. Keywords : Dried Corn, Vacuum Packaging, Insect and Fungi Damage
ANALISIS PROFITABILITAS USAHATANI TANAMAN “DAUN GEDI” (Abelmochus Manihot) DI KABUPATEN MINAHASA UTARA Lontoh, Rinny
COCOS Vol 1, No 4 (2019)
Publisher : COCOS

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Abstract

ABSTRACT  The purpose of this research is to know the profitability of the leaf crops Gedi in north of Minahasa regency. This research carried out during three months start from May until July 2019. The sample of this research used simple random sampling method. The data collected in this research is primary data and secondary data. Primary data obtained from direct interview to ten farmers of the leaf crops Gedi, secondary data obtained from the agency that related with the research and through google searching to got scientific journal article and skripsi from another university that related with topic of research. The result of this research showed that crop farming of Tanaman (plant) Gedi generate profit about 66,43%. It means that if the the bussiness is able to sell production result, so the level of the profitability obtained from the sale is 66,43%. Key Words : Profitability, Gedi, North of Minahasa regency.
PENGGUNAAN TRICHOKOMPOS UNTUK PENGENDALIAN PENYAKIT LAYU Sclerotium rolfsii (Sacc.) Curzi PADA TANAMAN KACANG TANAH (Arachis hypogaea L.) Simanjuntak, Grace Lolyta; Assa, Berty. H.; Manueke, Jusuf
COCOS Vol 1, No 4 (2019)
Publisher : COCOS

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Abstract

ABSTRACT This study aims to determine the effect of Trichocompost use on the percentage of wilt by S. rolfsii in peanut plants. The study was conducted at the Laboratory of Plant Microbiology and Disease, Sam Ratulangi University Faculty of Agriculture, Manado. The study lasted for three months from March 2019 to June 2019. The study was conducted using a Completely Randomized Design (CRD) with 5 treatments consisting of A = Control / Without Trichocompost, B = 100g Trichocompost, C = 200g Trichocompost, D = 300g Trichocompost, E = 400g Trichocompost. The things observed in this study were the symptoms of the attack, the cause of the disease, and the percentage of plants affected by wilt. Based on the results of the study it can be concluded that Trichocompost able to inhibit the growth of S. rofsii. The dose size of the 400g Trichocompost dose which has the highest ability to inhibit S. rofsii. Keywords: Trichokompost, Peanut plants,  S. rofsii
UJI TEKNIS CROWN INDO JARWO TRANSPLANTER DI DESA TUYAT KECAMATAN LOLAK -, Dai; Rantung, R. A.; Pangkerego, F.
COCOS Vol 1, No 4 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.24163

Abstract

ABSTRACT     Generally, the processes of paddies planting in Lolak district are still using conventional systems, such as tegel planting, hambela and tabela. Those kinds of systems involve a lot of labor, take much time and high cost. In 2016, The Government of Lolak district through Department of Agriculture had helped the farmers by giving them a planting machine which is Crown Indo Jarwo, but unfortunately the farmers didn’t use it well. The purpose of this study was a technical test of Crown Indo Jarwo Transplanter, includes the uniformity of seeds planting from planter forks, field efficiency, calculating fuel consumption and analyzing the basic costs of planting. The methods that used in this study were experimental and dialysis methods in descriptive by planting paddies mechanically with Crown Indo Jarwo transplanter. This study also used 3 plots of paddy fields of the same size, 30 m x 11 m. The results of this study obtained the working capacity is 5,35 hours/ha, the fuel consumption is as much as 1.435 liters/hour, uniformity of seed plugging of 96.8%, theoretical field capacity and effective field capacity of 0.235 ha/hours and 0.187 ha/hour so that field efficiency is 79.74% and the cost of planting is Rp. 444,127,-/ Ha. Keywords: Indo Jarwo Transplanter, field efficiency
MODIFIKASI TUNGKU PEMBUATAN GULA AREN (Arenga Pinnata) MENGGUNAKAN BAHAN BAKAR LPG (Liquified Petroleum Gas) Mokodompit, Rizal; Pangkerego, MS, Ir. Freeke; Lengkey, MSi, Dr. Ir. Lady
COCOS Vol 1, No 4 (2019)
Publisher : COCOS

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Abstract

Abstract The purpose of this study was to modify and make furnace for the processing of palm sugar, test the performance of modified furnace and traditional furnace in terms of fuel usage and processing time, and calculate the efficiency of traditional furnaces and furnaces. The results showed that the processing of palm sugar sap using 3.6 kg LPG fuel modification furnace had a processing time of 3.33 hours whereas, the processing of traditional palm sugar palm sap using wood fuel as much as 49.3 kg had a processing time of 1, 73 hours because palm sugar has been preheated. The FCR fuel consumption rate using a modified furnace is 1,081 (kg / hour), and the FCR fuel consumption rate (fuel consumption rate) using traditional furnace is 28.49 (kg / hour). The efficiency of the modified furnace is 8.90%, and the efficiency of traditional furnaces is 1.07% Keywords: Processing Time, Fuel Consumption, Furnace Efficiency
PENGARUH PERBEDAAN KETINGGIAN TEMPAT TERHADAP KANDUNGAN METABOLIT SEKUNDER PADA GULMA BABADOTAN (Ageratum conyzoides L.) Katuuk, Rino H.H.; Wanget, Sesilia A.; Tumewu, Pemmy
COCOS Vol 1, No 4 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.24162

Abstract

Abstract This study aims to look for the effect of site height on the phytochemical content of weed babadotan Ageratum Conyzoides L. This research was carried out at the Samratulangi University Integrated Laboratory in Manado, on September to October 2018. The study used extraction metode and the results of the study were presented in table form. The results showed that there was a difference in the content of secondary metabolites in babadotan (Ageratum Conyzoides L.) in different of height. The secondary metabolite namely saponin found in the middle plain (700 m asl) but not found in the lowlands (320 m asl) using extraction tests with ethanol solvents. Key words :  secondary metabolite; site height; saponin
JENIS DAN PERSENTASE PARASITOID TELUR HAMA PENGGULUNG DAUN PISANG (Erionata thrax L) (LEPIDOPTERA: HESPERIIDAE) PADA BEBERAPA KETINGGIAN TEMPAT DI KABUPATEN MINAHASA Paath, Melisa Catrina; Pelealu, Jantje; Meray, R. M.
COCOS Vol 1, No 4 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.23909

Abstract

ABSTRACT. Melisa, Jantje Pelealu, and Elisabeth Meray. 2019. Species and Percentage of Parasitoid of Banana Leaves (Erionata thrax L) (Lepidoptera: Hesperiidae) at Several Altitude Places in Minahasa District. The aim of the study was to determine the type and percentage of Erionata thrax egg parasitoid at several altitudes in Minahasa Regency, namely the height of 0-100 meters above sea level in the Village of Kalasey, 101-200 mdpl Sea, and 201 - 300 masl Warembungan. The study lasted for four months, namely April 2016 to July 2016. The experiment used the survey method. Determination of sampling is done by drawing diagonal lines in the location. Each diagonal point is defined as five clumps of banana plants for sampling. Sampling was taken randomly in five clumps of banana plants. Data collection is done once a month. The way to take samples is to take as many eggs as E. thrax found on the lower surface of the leaves. The parasitoid that comes out of the egg is separated and included in killing bottle. The percentage of parasitic eggs is done by counting the number of parasitic eggs. The results showed that there were types of parasitoid, namely Agiommatus sumatraensi, Anastatus sp., Pediobius erionotae, and Ooencyrtus pallidipes. Total Parasitization of egg parasitoid of E. thrax pests at an altitude of 0 - 300 masl in Minahasa District reached 68.5%. The highest paritation, namely P. erionatae, reached 19.1%. Keywords : Parasitoid in the eggs, E. thrax, different altitudes
“Kajian Erosi Di Daerah Aliran Sungai Sario Sulawesi Utara” “Study of Erosion in Sario Watershed North Sulawesi” Turangan, Patriot Yusuf Carol; Mawara, Dr. Ir. Jody M.; Kamagi, Ir. Yani E.B.
COCOS Vol 1, No 4 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.24166

Abstract

ABSTRACT  Watersheds are very important for human life. Land erosion is one of watershed damage conditions which causes a lot of grief to the community. To determine the extent of erosion and the level of erosion hazard in Sario watershed is the goal of this study. A survey method was carried out with a land unit approach. Erosion was calculated using the USLE. The amount of erosion was 1077,76 tons/hectare/year with an average erosion of 53,89 tons/hectare/year. The level of erosion hazard in Sario watershed consist of : an area of 857,71 ha (41%) of very low erosion hazard, an area of 549,12 ha (26,83%) of low erosion hazard, an area of 200,63 ha (9,80%) of moderate erosion hazard and an area of 439,57 ha (21,47%) of severe erosion hazard.  Keywords : Watersheds, Erosion, Erosion Hazard
SERANGAN HAMA Crocidolomia pavonana F. (LEPIDOPTERA: PYRALIDAE) PADA PERTANAMAN KUBIS DI RURUKAN, PASLATEN, DAN KUMELEMBUAI KOTA TOMOHON Datau, Rulin; Kaligis, James B.; Wanta, Noni N.
COCOS Vol 1, No 4 (2019)
Publisher : COCOS

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Abstract

ABSTRACT  This study aims to determine the percentage of attacks from caterpillar pest (C. pavonana) on cabbage plants in Rurukan, Paslaten and Kumelembuai, Tomohon City. The results of this study are expected to provide information about the attack of caterpillar pest (C. pavonana) on cabbage plants (B. oleracea) in Rurukan, Paslaten and Kumelembuai, Tomohon City.  The research was carried out in Rurukan, Paslaten and Kumelembuai, Tomohon City which lasted for 4 (four) months, namely from March 2019 to June 2019. The research was conducted in a survey using the purporsive sampling method. In cabbage plants, plants were directly observed which showed symptoms of being attacked. Cabbage plants are considered attacked by caterpillars when they show symptoms, although larvae are not found. Sampling is done 6 (six) times at intervals of 1 (one) week.  The results showed that the attack of caterpillar pest, C. pavonana in Paslaten, Rurukan and Kumelembuai showed varied attacks. The highest attack of C. pavonana was found in Rurukan, which was 50.58 percent and followed sequentially in Kumelembuai and Paslaten, which amounted to 31.58 percent and 23.75 percent.  Keywords :  Cabbage plant, Crocidolomia pavonana, Tomohon.

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