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Meldi T.M. Sinolungan
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INDONESIA
COCOS
Published by Universitas Sam Ratulangi
ISSN : -     EISSN : 27150070     DOI : 10.35791
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal ini memuat materi yang berkaitan dengan Pertanian. Menyangkut Tanah, Budidaya Pertanian, Proteksi Tanaman, Teknologi Pertanian dan Sosial Ekonomi Pertanian
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 831 Documents
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ANALISIS PERBEDAAN JENIS BAHAN DAN MASSA PENCETAKAN BRIKET TERHADAP KARAKTERISTIK PEMBAKARAN BRIKET PADA KOMPOR BIOMASSA Wangko Iwan Marchel; Pangkerego Freeke; Tooy Dedie
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25028

Abstract

ABSTRACT This research aims to analyze the differences from the type of material and mass of briquette molding toward the characteristics of burning briquette. Burning characteristics include temperature of burning, burning time, boiling time of water, and thermal efficiency resulting from. The method used in this research is descriptive experimental method with coconut shell and corncob as raw material for briquettes. This study uses the difference in mass of material when molding briquettes. The mass of material at the time of moulding is divided into 50 g and 40 g. The results indicate the quality of briquettes as follows, moisture content of 7.22%-8.31%, density of 0.52 g/cm3 – 0.78 g/cm3, a heat value of 6,259.81 cal/g – 6,906.56 cal/g. Briquettes A (coconut shell with a mass printing of 50 g) produces the lowest moisture content 7.22%, the highest density 0.78 g/cm3, as well as the greatest heating value i.e. 6,906.56 cal/g. The results of the burning indicate optimum fire temperature reached 934.8 oC from briquettes B (coconut shell with a mass printing of 40 g). Average the time of boiling 2 litres of water ranged from 22.16 minutes – 27 minutes with a total of boil water between 12-14 liters, the burning time ranging between 167 minutes/kg – 220 minutes/kg briquettes, as well as thermal efficiency achieved 14.03% – 15.15%.  Keywords: Briquette, burning characteristics, thermal efficiency.
SERANGAN HAMA PENGGEREK BATANG Ostrinia furnacalis Guenee (LEPIDOPTERA: PYRALIDAE) PADA VARIETAS JAGUNG DI KABUPATEN MINAHASA SELATAN Inday Pangumpia; Jantje Pelealu; James B. Kaligis
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25578

Abstract

Abstract The aim of this study was to determine the difference between O. furnacalis maize borer infestation on Pioneer 27 and Bisi 16 varieties in Kapitu, Amurang Barat, Tawaang, Tenga, Tenga, South Minahasa. The time for conducting the research is five months from February to June 2018. This study uses a survey research method with direct observation in farmers' plantations. Each farm is determined by one ha of corn plantations and then divided by five observation subplots that are spread diagonally and 40 subplots are taken.  Based on the results of the study, the percentage of O. furnacalis attacks on maize plants in Kapitu and Tawaang villages, South Minahasa regency, showed that based on varieties, the highest attack on maize variety was 27. P40, 0.40 percent, and Bisi 16 was only 0.23 percent. Percentage of attacks based on plant age shows that the corn bisi variety 16 at the age of plants 37 days after planting (HST) of 0.10%, 44 DAP of 0.25%, 51 DAP of 0.15%, 58 DAP of 0.27 % and 65 days after 0.39%. Furthermore, the percentage of attack of maize pioneer variety 27, namely 37 dap for 0.17%, 44 dap for 0.40%, 51 dap for 0.15%, 58 dap for 0.54% and 65 dap for 0.77%. The difference in O. furnacalis attack on varieties of corn plants, allegedly caused by eating and physical plants.
UJI TIGA JENIS PUPUK KANDANG TERHADAP PERTUMBUHAN DAN PRODUKSI BAWANG MERAH (Allium cepa, L.) Ester N. Pajow; Joko Purbopuspito; Meldi T.M. Sinolungan
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25579

Abstract

Abstract Shallots are an important vegetable commodity in North Sulawesi with a high market demand.  This research tested the type of manures for the growth and production of shallot plants using a field experiment at the BPTP SULUT Experimental Field and soil testing at the Soil Fertility Laboratory, Faculty of Agriculture, UNSRAT.  The field experiment used four types of manure treatments in six replications, so that 24 experimental beds were obtained.  From this study, the best type of manure for plant growth, increasing the number of leaves and the number of tillers, and for the production of fresh shallots is obtained by dose of a 40 tons of chicken manure /ha or a 40 tons of cow manure /ha in contrast to a 40 tons of pig manure /ha or a control without manure, which is gained from soil fertility conditions with 1.62-1.70% C-organic; soil pH 6.60-6.64; 0,137-0,148% soil N-total land; 18.28-21.05 ppm soil P-available; and 20.44-23.54 ppm soil Kavailable.  Keywords :  chicken manure, cow manure, shallots.
PEMBERIAN PUPUK ORGANIK CAIR TERHADAP PERTUMBUHAN DAN HASIL PADA TANAMAN MENTIMUN (Cucumis sativus L.) Paul Worek; Beatrix Doodoh; Sofia Demmassabu
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25615

Abstract

ABSTRACT This study aims to determine the effect of concentration of liquid organic fertilizer (POC) on growth and yield on cucumber plants. This research was carried out in the village of Kolongan Tetempangan, Kalawat District, North Minahasa Regency for 2 months from July to August 2018. This research was conducted using the Completely Randomized Design method, with five treatments and four replications, namely the concentration of liquid organic fertilizer: 0 ml POC /2l water (P0), 2 ml POC /2l water (P1), 4 ml POC /2l water (P2), 6 ml POC /2l water (P3) and 8 ml POC /2l water (P4). Observations were made on each plant with observational variables, namely plant height, number of leaves, flowering time, number of flowers, number of fruits, fruit length, fruit diameter and fruit weight. The results showed that the administration of liquid organic fertilizer G Tonik has not given a significant effect on the growth of cucumber plants, but it has an effect on the production of cucumber plants in this case the fruit weight. Keywords : concentration, liquid organic fertilizer (POC), growth, hybrid cucumber
STRATEGI PEMASARAN HHBK GULA AREN DI DEASA LUMPIAS WILAYAH KPHL MINAHASA UTARA Marthinus Fatemyo; Hengk D. Walangitan; Wawan Nurmawan
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25638

Abstract

Abstract This study aims to describe and analyze the marketing strategy of palm sugar in Lumpias Village. The study was conducted in September 2017 using a survey approach by interviewing 6 producers of respondents through questionnaires, with open questions. The data obtained were analyzed using the SWOT method. Based on the results of the SWOT analysis obtained hold and maintain strategy means that the marketing of palm sugar in Lumpias Village has the strength and opportunity to continue to be maintained and maintained through market penetration and product development. Furthermore, in the development of marketing with the following strategies : (1) the strategy of building and increasing business partnership and expanding the marketing network by utilizing the development of information technology (2) the strategy of promoting through the internet (3) the strategy of maintaining and improving product quality Key words: HHBK Marketing Strategy Palm Sugar in Deasa Lumpias North Minahasa KPHL Region.
ANALISIS KOEFISIEN ALIRAN PERMUKAAN PADA TIGA TIPE PENGGUNAAN LAHAN di TANAH ANDISOL Ikasapta Ramehiang; Johan Rombang
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25740

Abstract

ABSTRACT Current changes in land use caused by population growth and development in the development sector are increasing. This has a significant impact on changes in surface flow values, causing the flow coefficient to increase resulting in flooding. One of the important concepts in efforts to control flooding is the surface flow coefficient or commonly represented by C. This number of surface flow coefficients is one indicator to determine whether a watershed has been disturbed (physically). This study aims to calculate the Surface Flow Coefficient (C) in the type of forest land use, shrub land and open land. The method in this study used a randomized block design as a data collection method which was then analyzed using analysis of variants. From the results of measurements carried out in the field, the coefficient of surface runoff of forest land and shrub land is significantly different from open land where in forest land is 0.0019 and shrub land has a value of 0.0013, while open land is 0.0036. From the results of measurements carried out in the field, the infiltration rate in a row is shrub land of 210 mm / hour, forest land of 99 mm / hour and open land of 69.6 mm / hour. Forest land has a smaller infiltration rate compared to shrub land because forest land in the study area is artificial forest planted with vegetation, strata and has a different root system of natural forest. Keywords: surface flow coefficient, infiltration, surface flow
ANALISIS KANDUNGAN E-COLI DAN TOTAL COLIFORM KUALITAS AIR BAKU DAN AIR BERSIH PAM MANADO DALAM MENUNJANG KOTA MANADO YANG BERWAWASAN LINGKUNGAN Tia Milka Rompas; Wiske Ch. Rotinsulu; J.V. Bobby Polii
COCOS Vol. 10 No. 7 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i5.25742

Abstract

ABSTRACT This research was conducted for 3 months, from March to May 2017. The water sampling location was selected at two points. The first location was in TONDANO River (the river around PT Air Manado). The second was clean water at PT Air Manado. The water sampling was collected with three replications (sampling time) and analysed at in Manado Baristan laboratory. This research aimed to know the content of E-Coli and Total Coliform in a standard water and a clean water of PT. Air Manado. The results showed that the content of E-Coli and Total Coliform in Tondano River were lower the standard quality of 5000 (number/100 ml); For the first sampling, intake E-Coli 13/100 ml, Total Coliform 14/100ml; the second sampling, E-Coli 1.8/100ml, Total Coliform 340/ 100ml and the third sampling, E-Coli 0/100ml, Total Coliform 240/100ml. All water sample has met the water quality standard according to Government Decree Number 82, 2001 about water quality treatment and water pollution control. As for the clean water samples, the results showed that the first and the second samples have not met the quality standard for clean water as they have E-Coli and Total Coliform (First sampling, E-Coli 4/100ml and Total Coliform the first sample 2 /100ml; The second sampling, E-Coli 0/100 ml and are Total Coliform4/100ml. Keyword : Clean Water, E-Coli, Total Coliform.
JENIS DAN SERANGAN HAMA LALAT BUAH (Bactroceradorsalis) PADA TANAMAN TOMAT (Solanumlycopersicum.L) DI DESA TARAITAK KECAMATAN LANGOWAN UTARA KABUPATEN MINAHASA Monalisa Debora Setlight; Elisabet. R. M. Meray; Maxi Lengkong
COCOS Vol. 10 No. 8 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i6.25768

Abstract

ABSTRACT This study aims to determine: (1) the types of fruit flies that attack tomato plants and (2) the percentage of fruit fly attack Bactroceradorsalis on tomato plants in North LangowanSubdistrict, especially Taraitak Village.  The time of the study was carried out for two months, from March to April 2019. The research was conducted using a survey method at several tomato planting locations in  NorthLangowan sub-district. Sampling using the diagonal slice method is to determine randomly where to pick tomatoes sampled which was attacked by Bactroceradorsalis. On land determined 5 points that are the location in determining the plants observed by adjusting the shape or area of tomato plants planted by farmers. Based on the results of the study it can be seen that the percentage of B. dorsalis fruit fly pests attack. on tomatoes every week is different. The first week was 11.21 percent, in the second week it increased to 12.18 percent.  And in the third week also increased to 15.50 percent, then entered in the fourth week decreased to 9.08 percent and in the fifth week slightly increased to 9.44 percent. From the results of observations in the field of B. dorsalis fruit fly attack, the pests increased and decreased every week. Keywords : Fruit flies (Bactroceradorsalis), Tomato plants
IDENTIFIKASI RUANG TERBUKA HIJAU (RTH) DI KAWASAN PERUMAHAN TAMAN MAPANGET RAYA KECAMATAN MAPANGET KOTA MANADO Maks Bernard Krisifu; Zetly E. Tamod; Meldi T.M. Sinolungan
COCOS Vol. 10 No. 8 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i6.25785

Abstract

ABSTRACT The aim of the study was to identify Green Open Space (GOS) at Taman Mapanget Raya (TAMARA) Residence Area of Mapanget Sub-district, Manado City. The method was a qualitative descriptive study, by using data in the forms of words, schemes and images. Result has found that, the Green Open Space (GOS) identification were based on: 1)Availability of GOS at TAMARA Residence of Mapanget Subdistrict, which was consisted of: GOS of Green Line (6,659 m2), GOS of City Garden (3,828 m2), GOS of Residences Yard (1,249 m2), GOS of People Estate (8,449 m2), GOS of City Forest (14,389 m2), and GOS of Agriculture (10,993 m2), has found in amount of 45,567 m2, or almost 4.6 Ha from the total land area of TAMARA Residence (509,303 m2, or 50.9 Ha). The percentage of Public GOS at TAMARA Residence was 8.9% from the total land area of this residence, whereas the percentage of this Public GOS was 0.09% from the GOS of Mapanget Sub-district, which showed that the Public GOS at this residence has not been fulfilled; 2)Land physical characteristics and kinds of plant at GOS location of TAMARA Residence were flat until slope gently in topography, parent material of alluvial, flood land plain, colluvium, sands, sandy rocks, and volcanic breccia, and some kinds of plants, were: Coconut, Banana, Corn, Sedge-grass, others; and 3)Soil chemical characteristics were consisted of: organic matter more than 2%, CEC in the medium category, the contents of K and P in criteria low to high, and pH in criteria of low (rather acid) to high (rather base). Keywords : Identification, Green Open Space, Residences Area
RESPONS TANAMAN BAYAM MERAH (Amaranthus sp.) TERHADAP PEMBERIAN PUPUK SERTA SIFAT FISIK DAN KIMIA TANAHNYA Orinus Kogoya; Joko Purbopuspito; Jenny J. Rondonuwu
COCOS Vol. 10 No. 8 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i6.25786

Abstract

ABSTRACT This study aims to determine the effect of compost, NPK and Urea fertilizer on the growth of Red Spinach (Amaranthus, sp.) Plants and the physical and chemical properties of the soil. which fertilizer is best for red spinach plants and for soil analysis is carried out at the Soil Physics Laboratory and Soil Chemistry and Soil Fertility, Faculty of Agriculture, Sam Ratulangi University, Manado. This research was conducted using the Completely Randomized Design Method (CRD), where R0 was the control, R1 chicken manure compost, R2 NPK, Urea R3, this research was carried out in 4 treatments and 3 to obtain 12 experimental plots / beds. The results of this study indicate that the land in the Manado City Pakowa Village has a sandy loam and clay texture which has a relatively fast permeability rate, and has a slightly acidic soil acidity to the availability of nutrients N, P, K and C-organic is relatively low. Kata Kunci : Bayam Merah, Pengaruh Pupuk, Fisik dan Kimia

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