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Meldi T.M. Sinolungan
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Fakultas Pertanian Universitas Sam Ratulangi Manado
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Sulawesi utara
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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KAJIAN TANGGAP PERTUMBUHAN DAN PRODUKSI TANAMAN KENTANG (Solanum tuberosum L.) PADA PEMBERIAN PUPUK NPK, PUPUK ORGANIK CAIR DAN TRICHOKOMPOS Gabriel M. R. Sondakh; Edy F. Lengkong; Saartje Sompotan; Jemmy Najoan
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30824

Abstract

ABSTRACTPotatoes (Solanum tuberosum, L.) are one of the important food commodities after rice, maizeand wheat whose needs continue to increase both to meet domestic needs and even have the potential to beexported. This study aims to determine the effect of NPK fertilizer, Liquid Organic Fertilizer, andTrichocompost on the growth and production of potato (Solanum tuberosum L.). This study used aliterature study method, utilizing the results of research and scientific publications on the effect of NPKfertilization, Liquid Organic Fertilizer, and Trichocompost on the growth and production of potato plants.The results showed that the application of NPK fertilizer, Liquid Organic Fertilizer, and Trichokomposhad an effect on the growth and production of potato (Solanum tuberosum L.). The dose of NPK fertilizergiven to potato plants was 700 - 1,400 kg and could be combined with manure, with production 14.7 -22.5ton ha-1. The dose of liquid organic fertilizer can be given 5-25 ml / liter of water and can produce potatoproduction 23.13 - 34.56 ton ha-1. Tricho-compost biofertilizer can be given in solid form 25 ton ha-1 or inliquid form 5 ml / l -250 ml / l can be sprayed onto leaves or onto the soil, and can give potato production36.8 - 38.3 ton ha-1. Tricho-compost can help suppress and control the attack of soil-borne pathogens suchas Fusarium fungi, Phytophora fungi, and Phytium fungi which are important pathogens in potatocultivation..Keyword : potato, NPK, liquid organic fertilizer, trichocompost
SISTEM TANAM JAJAR LEGOWO PADA PERTUMBUHAN JAGUNG MANIS (Zea mays L. Saccharata) Erungan Feidy; Rotinsulu Wiske Ch; Wanget Sesilia A; Demmasabu Langimanapa S
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30825

Abstract

ABSTRACTThe legowo row planting system on sweet corn growth aims to determine which legoworow cropping system is appropriate for sweet corn plants and is able to have an influence onthe growth of sweet corn plants. Implemented at the UNSRAT Experimental Garden inTomohon, using a randomized block design method. This research was conducted with threetreatments, namely: legowo row 2: 1, legowo row 3: 1, and conventional. With the spacing forlegowo row 50 x 25 cm and conventional 70 x 25 cm. Observation variables include plantheight and number of leaves which data are taken each week. The results of this study were theuse of legowo row 2: 1 and legowo row 3: 1 planting systems with a spacing of 50 cm x 25 cmand a conventional planting system with a spacing of 70 cm x 25 cm on sweet corn in Tomohonhad no effect on vegetative growth.Keywords: legowo row, sweet corn, vegetative growth.
PENGGUNAAN EKSTRAK BUAH BITUNG DALAM PENGENDALIAN HAMA KEONG MAS (Pomacea caniculata L.) PADA TANAMAN PADI SAWAH (Oryza sativa L.) Devita Gabai; Dantje Tarore; Reity A.G. Engka; Ronny Nangoi
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30877

Abstract

ABSTRACT This study aims to determine the ef ect of beetroot ectract on the motality of Mas Keong (Pomacea caniculata L.) pests in Paddy Rice (Oryza sativa L.) which was carried out at the Green House of pests and Plant Diseases, Faculty of Agriculture Unsrat. The implementation time of this research was for three months from January 2020 to March 2020 and observations were made 1 day after application, 4 observations were made with a time interval of 6 hours. This study used a completely randomized design method with 5 treatments and 3 replications. Each replication consisted of 20 individual golden snails, so the total number of golden snails used was 300 individuals. The results of the research on the mortality observation of the mas snail pest showed that the mucus was released from the body of the golden snail so that the golden snail was poisoned due to the application of the extract of beetroot. Of the five treatments showed the percentage of snail pest mortality. The application of bitung fruit extract is Control = 0.00%, Extract Concentration 2% = 70.00%, Extract Concentration 4% = 80.00%, Extract Concentration 6% = 83.33% and Extract Concentration 8% = 100.00 %. <30 minutes the golden snail has stopped eating and its movements begin to slow down and burrow into the ground, over time its body will be released from its shell, this shows that the golden snail has died. Keywords : B. asiatica, P. caniculata, rice
KEANEKARAGAMAN JENIS BURUNG AIR DI KECAMATAN KAKAS, SULAWESI UTARA Tiara W. N. Lasantu Tiara W. N. Lasantu; Johny S. Tasirin; Wawan Nurmawan
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30878

Abstract

ABSTRACT DIVERSITY OF AQUATIC BIRD SPECIES IN KAKAS DISTRICT, NORTH SULAWESI The objectives of the research are to determine the waterbird diversity, community structure and composition. It is also to compare bird communities in the lake and the adjacent forested area. The study was conducted in January to February 2020 in Kakas, Minahasa Regency, North Sulawesi. The water bird communities were observed by count point method along the lake-line and on a transect in the forested area. There were seven observation points along the lake and three at the forested area. The results show that there are 54 species of birds (22 families) with 17 (6 families) species of waterbirds. The community structure and composition in lakes is different to the forests. Species with high important values on the lake are Collocalia esculenta, Egretta garzetta, Ardeola speciosa, Hirundo tahitica, dan Ardea alba (IV 38.74-12.91). The important species in the forested area are Collocalia esculenta, Milvus migrans, Corvus enca, Cinnyris jugularis, dan Zosterops montanus (IV 43.99-12.53). The Shannon-Wiener index is medium 2.25 and the evenness is high 0.70. The community similarity index is low at 0.36. Keywords : Water Birds, Species Diversity, Kakas District
IDENTIFIKASI SIFAT KIMIA TANAH YANG DITANAMI TANAMAN KENTANG (SOLANUM TUBEROSUM L.) DI DESA PINASUNGKULAN UTARA KECAMATAN MODOINDING Michael A.S Roring; Diane D. Pioh; Jemmy Najoan
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30879

Abstract

ABSTRATC Soil chemical properties are very influential to increase plant growth. Application of fertilizer is one of the important means of production in plant cultivation, so that its availability is absolutely necessary for the sustainability of soil and plant productivity. The function of chemical fertilizers is to provide macro nutrients such as N, P, K, Ca, Mg, and S and micro nutrients such as Zn, Cu, B, Mo, Co, Mn, Fe. This study aims to identify the chemical properties of soil planted with potato (Solanum Tuberosum L.) in Pinasungkulan Utara Village, Modoinding District. The results showed that the soil pH content was in neutral conditions (6.5 - 6.8), Corganic had a low to moderate value (1.32% - 2.78%), Nitrogen had a low to moderate value ( 0.2% - 0.24%), Soil phosphorus has a moderate content value (17.51ppm - 20.65ppm), potassium. Based on the chemical properties of land planted with potato (Solanum Tuberosum L.) in Pinasungkulan Utara Village, Modoinding District, there are no serious problems but attention needs to be given to improving the management of organic matter. Keywords: Identification, Chemical Properties, Potato Plants.
Analisis Sifat Fisik dan Kimia Tanah pada Lahan Sawah di Kecamatan Kotamobagu Utara Josua F. Manullang; Sandra E. Pakasi; Joice M. Supit; Jelie V. Porong
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.31052

Abstract

ABSTRACTThe study aims to determine the status of physical and chemical properties of soil on paddy soilin Kotamobagu Utara district. This research was conducted in November 2019 to January 2020using a survey method and laboratorios analysis. Soil samples were taken at thirteen points at adepth of 0 to 20 cm. The parameters measured were soila texture (Kang Biaw Tjwan method),pH (pH meter), C-organic (Walkley and Black method), nitrogen (Kjedhal method), phosphorus(Bray I method) and Potassium (Bray method I). Research data analysis using descriptiveanalysis. The results showed that soil texture in the research sites is silty loam, the content oforganic matter is in the range 1,25 % to 2,50 %, the content of soil pH is in the range 6,8 to 7,0 ,the content of the element nitrogen is in the range of 0.11% to 0.22% , phosphorus content in therange of 18.34 ppm to 23,21 , and potassium element content is in the range of 22,21 ppm to30,21 ppm. The chemical properties of paddy soils in Kotamobagu Utara District is at textureclass of silty loam and chemical properties of paddy soil with each respective criteria neutral soilpH, C-organic low to moderate, Nitrogen low to moderate, Phosphorus moderate and Potassiummoderate. In general, the physical and chemical properties of soil in paddy fields in KotamobaguUtara District are included in the criteria suitable for paddy soil.Key Word: Physical properties, chemical properties, Paddy Fields
IDENTIFIKASI SIFAT FISIK DAN KIMIA TANAH PADA LAHAN PERSAWAHAN DI KECAMATAN KOTAMOBAGU SELATAN Dimas Ajie Saputra; Sandra E. Pakasi; Verry Ch. Warouw
COCOS Vol. 12 No. 3 (2020): EDISI JULI-SEPTEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i7.31053

Abstract

ABSTRACTThe purpose of this study is to determine the physical and chemical properties of the soil on thepaddy fields in the District Kotamobagu Selatan. This research was conducted in the month of Octoberuntil November 2019. The method used is survey method, namely by direct observation in the field anddoing analysis. Soil samples taken at the 41 point spread on a land area of rice fields amounted to1318.07 ha. . Parameters observed were Soil Texture (method of Kang Biaw Tjwan), soil pH (pHmeter), C-organic matter (method of Walkley and Black), Nitrogen (method of Kjedhal), Phosphorus(method of Bray I) and Potassium (method of Bray I). Research data analysis using descriptive analysis.The results showed that, soil physical and chemical properties in paddy fields in the DistrictKotamobagu Selatan are as follows physical properties of the soil have a clay texture dusty, andchemical properties of the soil that consists of : a pH within the criteria of neutral, C-organic is in thecriteria high to low, the nitrogen criteria of low to very low, phosphorus is in the criteria is and thepotassium is on the kiteria was.Keywords: physical properties, chemical properties, paddy field,
PERANAN PENGGUNAAN LAHAN DI AREA TANGKAPAN SUNGAI TATAARAN TERHADAP EUTROFIKASI DANAU TONDANO Claudio Bonifasius; Johan Rombang Johan Rombang; Josephus Kalangi Josephus Kalangi
COCOS Vol. 12 No. 3 (2020): EDISI JULI-SEPTEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i7.31141

Abstract

ABSTRACTEutrophication is a problem faced by the world today. eutrophication is causedby increasing nutrient concentrations that occur in freshwater ecosystems. Land usechange in this case greatly affects the freshwater ecosystem around the lake. Thisstudy aims to assess the levels of Nitrogen (N) and Phosphorus (P) in the Tataaranriver water flowing into Lake Tondano due land use in the Tataaran river catchmentarea. The method used in this research is survey method and determination ofsampling points based on purposive sampling or the determination according to theresearch objectives, in this case at the outlet of each land use which is then presenteddescriptively for comparison. The results of this study indicate that based on the studyof Nitrogen (N) and Phosphorus (P) levels in the Tataaran river water flowing into LakeTondano, the largest contribution transported comes from residential land use, namelythe average N value content is 56.86 mg / seconds and P of 217.64 mg / second.Keywords : Eutrophication, Landuse, River of Tataaran
PENGARUH KONSENTRASI SUKROSA DAN STARTER TERHADAP KARAKTERISTIK SUSU KACANG MERAH (Phaseolus vulgaris L.) FERMENTASI Yanni Nathasia Br. Gurusinga; Jenny E.A. Kandou; Dekie Rawung Dekie Rawung
COCOS Vol. 12 No. 3 (2020): EDISI JULI-SEPTEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i7.31312

Abstract

ABSTRACTThis research aims to find the formula of fermented red bean milk withadding sucrose concentration and different starter that can be accepted by thepanelist and to analyze the chemical content. The research was designed usingCompletely Randomized Design (CRD) with different sucrose concentration(Factor A) and starter (Factor B). A1B1 (2% Sucrose and 5% Starter), A1B2 (2%Sucrose and 10% Starter), A1B3 (2% Sucrose and 15% Starter), A2B1 (5%2Sucrose and 5% Starter), A2B2 (5% Sucrose and 10% Starter), A2B3 (5%Sucrose and 15% Starter), A3B1 (8% Sucrose and 5% Starter), A3B2 (8%Sucrose and 10 % Starter), A3B3 (8% Sucrose and 15% Starter) with 3replications. the observation parameters of Total Lactic Acid bacteria, Total Acid,Total Sugar, Degree of Acidity (pH), and Sensory Test (Color, Scent, Taste,Vulnerability). The result shows that A3B3 (8% Sucrose and 15% Starter) isaccepted by the panelist with total bacterial lactic acid content of 1.60 x 105 colon/ g, total acid 0.037%, total sugar is 8.42%, and pH 5.Keywords: Fermented milk, Red bean
Pengaruh Penambahan Maltodekstrin Pada Pembuatan Minuman Instan Serbuk Buah Pepaya (Carica papaya L.) dan Buah Pala (Myristica fragrans H.) Michella C. Gabriela; Dekie Rawung; Maya M. Ludong
COCOS Vol. 12 No. 3 (2020): EDISI JULI-SEPTEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i7.31313

Abstract

ABSTRACTA research on processing of instant drink powder was conducted utilizing under-valued and under-utilized nutmeg flesh and papaya fruit in spite of their high content of vitamins A and C, withaddition of maltodextrin. This product was expected to increase the profit of papaya’s andnutmeg’s farmers. Instant drink powder is a product that can be easily served by adding hot or coldwater and mix. Maltodextrine plays an essential role in processing of instant drink powder as filler.It also contributes to drying, flavoring and volume of the product. The results showed thatmaltodrxtrin has a protective effect to reduce heat destruction of vitamin C during instant drinkprocess. With 15% matodextrin addition resulted in product with the highest residual vitamin C(114.27 mg/100g). Sensory qualities were also improved with matodekstrin addition.

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