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Meldi T.M. Sinolungan
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Fakultas Pertanian Universitas Sam Ratulangi Manado
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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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Laba-Laba Pembuat Jaring Di Lahan Areal Tanaman Padi Dan Sekitarnya Di Kabupaten Minahasa Fander Juan. Hosang
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.23423

Abstract

Abstract Spiders is one of the dominant predator or natural enemies classified in arthropod groups that play an important role in agricultural ecosystems, especially paddy field plantations. This study aimed to determine the types and populations of spider, especially net-spider in the area of rice fields and its surrounding. This research was conducted in 3 (three) different villages namely Sendangan Village Sonder District, Winebetan South Langowan District, and Koyawas West Langowan District for 3 months started on August to October 2017. This research was conducted by survey method. Sampling was carried out on spider webs found in embankments, ridge edges and areas surround the rice fields. Observations are conducted every 2 weeks for 3 months. The results showed that there were 224 individuals consisting of 13 species and 5 families of spiders divided into five family i.e. Tetragnathidae, Araneidae, Salticidae, Theriidae and Mitidae. The highest spider population was found in the location of the Koyawas Village (124 individuals), followed by Sendangan Village (64 individuals) and the lowest in Winebetan Village (35 individuals). In addition to that, the most populated rice fields in relation to the age of the plant was at the age of 8 Weeks After Planting (MTS) with the most dominant spider found in the location of Koyawas West Subdistrict, classified as Family Tetragnathidae 95 Individuals (in total), consisting of genus / species T. vermiformis, T. virescens, T.javana, T. nitens and the lowest is family Salticidae which is of genus / species Plexppus species which are only two individuals.
PENGARUH PEMBERIAN PUPUK KOMPOS BERBAHAN DASAR AMPAS SAGU TERHADAP PERTUMBUHAN VEGETATIF TANAMAN JAGUNG (Zea mays L) Fitrianti Maninggir; Verry R. Ch. Warouw; Meldi T. M. Sinolungan
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.23424

Abstract

ABSTRACT This research aimed to know the effect of the given compost-based sago fibres to the vegetative growth of corn. Taking the dregs of sago in the village of Salurang, subdistrict of South Central Tabukan, regency of Sangihe Islands. This was carried out in the Faculty of Agriculture University of Sam Ratulangi Manado. The soil and the dregs of sago were analized at Laboratory of Chemistry and Soil Fertility, Faculty of Agriculture University of Sam Ratulangi Manado. This study used a Random Completed Design (RCD), which consisted of ten treatment combinations and repeated as much as 3 times, so that the retrieved 30 pot experiments. Each pot contained a soil experiment weighing of 5 kg. The research results showed that every treatment there was significant effects of height corn plants, the amount of corn leaves, wet weight of header section, wet weight of plant root and dry weight of header section, however no significant effect to the dry weight of root section of corn plants. The best combination of mixed soil with compost-based sago fibres was a combination of soil and compost based sago fibres on a dose of 30 tons/ha. Keywords: plant corn (Zea mays L), sago fibres compost
JENIS DAN PERSENTASE PARASITOID TELUR HAMA PENGGULUNG DAUN PISANG (Erionata thrax L) (LEPIDOPTERA: HESPERIIDAE) PADA BEBERAPA KETINGGIAN TEMPAT DI KABUPATEN MINAHASA Melisa Catrina Paath; Jantje Pelealu; R. M. Meray
COCOS Vol. 10 No. 6 (2018)
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
PENGARUH PERBEDAAN KETINGGIAN TEMPAT TERHADAP KANDUNGAN METABOLIT SEKUNDER PADA GULMA BABADOTAN (Ageratum conyzoides L.) Rino H.H. Katuuk; Sesilia A. Wanget; Pemmy Tumewu
COCOS Vol. 10 No. 6 (2018)
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
UJI TEKNIS CROWN INDO JARWO TRANSPLANTER DI DESA TUYAT KECAMATAN LOLAK Dai -; R. A. Rantung; F. Pangkerego
COCOS Vol. 10 No. 6 (2018)
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
PENGGUNAAN TRICHOKOMPOS UNTUK PENGENDALIAN PENYAKIT LAYU Sclerotium rolfsii (Sacc.) Curzi PADA TANAMAN KACANG TANAH (Arachis hypogaea L.) Grace Lolyta Simanjuntak; Berty. H. Assa; Jusuf Manueke
COCOS Vol. 10 No. 6 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.24164

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
PENGARUH PENGEMASAN VAKUM TERHADAP KERUSAKAN BIJI JAGUNG (Zea mays L.) Novia Basriadi; Lady Corrie E. Ch. Lengkey; Frans Wenur
COCOS Vol. 10 No. 6 (2018)
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
“Kajian Erosi Di Daerah Aliran Sungai Sario Sulawesi Utara” “Study of Erosion in Sario Watershed North Sulawesi” Patriot Yusuf Carol Turangan; Dr. Ir. Jody M. Mawara; Ir. Yani E.B. Kamagi
COCOS Vol. 10 No. 6 (2018)
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 Rulin Datau; James B. Kaligis; Noni N. Wanta
COCOS Vol. 10 No. 6 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.24167

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.
Fraksi Radiasi Matahari pada Sistem Agroforestri Cempaka Solar Radiation Fraction in the Cempaka Agroforestry System Randi Purba; Semuel P. Ratag; Josephus I. Kalangi
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.24168

Abstract

ABSTRACT  Plant growth and development depends on internal factors (genetic) and external factors (environment). Solar radiation (external factor) is an energy source needed in plant growth. In agroforestry systems the existence of woody species (trees) will reduce the level of light received by agricultural crops (annual crops). The purpose of this study was to determine the fraction of solar radiation in the Cempaka agroforestry system. The research was conducted in three locations, namely Lemoh Barat Village (295 masl), Rumoong Atas Village (489 masl) and Kinilow Satu Village (652 masl). Direct measurement of radiation using a solarimeter device placed in 3 observation points at each location, while the measurement of radiation fraction estimation was taken data of tree canopy width, tree height, tree spacing width and land area. The results of direct measurements of radiation obtained at the Lemoh Barat Village agroforestry area were 62%. Rumoong Atas Village were 51% and Kinilow Satu Village were 53%. The estimation results obtained by Lemoh Barat Village were 74%, Rumoong Atas Village were 62% and Kinilow Satu Village were 26%. Key words: Radiation Fraction, Agroforestry, Cempaka

Page 58 of 84 | Total Record : 831

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