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Meldi T.M. Sinolungan
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Fakultas Pertanian Universitas Sam Ratulangi Manado
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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 9 Documents
 1 
Search results for , issue "Vol. 10 No. 4 (2018)" : 9 Documents clear
KONTRIBUSI HUTAN RAKYAT TERHADAP PENDAPATAN RUMAH TANGGA PETANI DI DESA RUMOONG ATAS KECAMATAN TARERAN KABUPATEN MINAHASA SELATAN Astriani Mohtar; Hengki D. Walangitan; Theodora M. Katiandagho
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.23362

Abstract

ABSTRAK According to Handoko (2007), income from community forests for farmers is still positioned as side income with a range of more than 10% of total income. The amount of contribution and the amount of income that cannot be received sustainably shows that community forests have not been able to become the foundation of farmer household livelihood, so research is needed on how much community forest contribution to farmer household income in Rumoong Atas Village, Tareran District, South Minahasa Regency. The objectives of this study were to describe the community forest management system in Rumoong Atas Village and to discover the contribution of the results of community forest management specifically for timber production to the income of farmer households data collection was carried out using the observation method, interviews with 30 respondents who were deliberately selected (purposive sampling) and literature studies to obtain primary data and secondary data. The results shows that 1) The community forest management system in Rumoong Atas Village uses an agroforestry system and develops a monoculture cropping pattern and mixed crops. Management activities are carried out based on three subsystems, which are carried out all with a free scale. The type of wood planted depends on seeds provided by the government. The harvest period is adjusted to the needs. 2) The contribution of the average income of community forests to the income of farmer households in Rumoong Atas Village is respectively (58.25%) for strata I, strata II (81.79%) and strata III (80.40%). The size of the community forest contribution depends on the number of trees that exist. Kata Kunci: Desa Rumoong Atas, Hutan Rakyat, kontribusi, pendapatan, rumah tangga
RESPONS PRODUKSI TANAMAN JAGUNG (Zea mays L.) TERHADAP PEMANGKASAN DAUN BAGIAN BAWAH Christian T. Rompas; Selvie Tumbelaka; Deanne A. Kojoh
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.23408

Abstract

ABSTRACT The purpose of this research was to examine the response of the maize production towards lower leaves pruning. This research was conducted in Malalayang Satu Timur, Manado City, North Sulawesi in the period of March to July 2018. This research was arranged in a Randomized Block Design consisting of three treatments, namely (P1 = No trimming, P2 = Trimming 3 Lower Leaves, P3 = Trimming 5 Lower Leaves). The results indicated that lower leaves pruning on maize has no effect towards the diameter and length of cob, number of seeds per cob weighing to 1000 seeds, as well as the seed weight per cob. Lower leaves pruning is ineffective because assimilates sourced from the lower leaves are more focused on the development of plant roots. This is presumably due to the hybrid maize varieties, which has the capability to maintain the quality of the plants, therefore pruning 3 and 5 lower leaves has no significant effect towards the seed weight per cob and the weight of 1000 seeds. In this research the lower leaf trimming did not significantly affect the production of corn plants, but in the observation variables, the weight of 1000 seeds increased when compared to the weight of 1000 seeds in the description of pioneer varieties. The average weight of 1000 seeds in this research was on pruning the lower 3 leaves of 375.85 g while in pruning the lower 5 leaves 361.13 g and the weight of 1000 seeds in the description of pioneer varieties was 311 g, this meant an increase. Further research is required by considering the location of the leaves to be pruning.
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
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
PARASITISASI Diadegma semiclausum Hellen (HYMENOPTERA: ICHNEUMONIDAE) TERHADAP HAMA Plutella xylostella Linn. (LEPIDOPTERA: YPONOMEUTIDAE) PADA TANAMAN KUBIS DI DESA RURUKAN DAN KAKASKASEN II KOTA TOMOHON Rifal O. Manopo; Caroulus S. Rante; Mouwy Dien
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.24322

Abstract

ABSTRACT  The research aimed to determine the parasitization of D. semiclausum against P. xylostella in cabbage plants in Rurukan and Kakaskasen II Village, Tomohon City.  The research lasts for five months, from October 2018 to February 2019.  The study used a survey method that was carried out directly on farmers' cabbage plants.  Determining the location of collecting pupa samples is done by purporsive sampling, which is taking samples where there are cabbage plants in both locations, namely Rurukan and Kakaskasen II Village.  Sampling for observation of the percentage of parasitization was carried out directly, namely by taking pupae in the cabbage crop. Samples were placed in used container containers and covered with azahi cloth and then taken to the Entomology and Plant Pest Laboratory, the Sam Ratulangi University of Agriculture Faculty of Manado to be maintained and observed every day.  The results showed that the parasitization of D. semiclausum against pests of P. xylostella in Rurukan and Kakaskasen II villages was 25.57% and 24.76% respectively.  Keywords :  Cabbage plant, Plutella xylostella, Diadegma semiclausum
KAJIAN SIFAT FISIK TANAH UNTUK TANAMAN PISANG ABAKA (Musa textilis NEE) DI PERKEBUNAN PT.VIOLA FIBER INTERNASIONAL KABUPATEN MINAHASA TENGGARA Ronald Batubuaya; Yani E. B. Kamagi; Berry R. V. Joseph.
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.24323

Abstract

ABSTRACT  This research aimed to find out some physical properties of the soil for the developing the abaca banana at Silian Village, Silian Raya Sub district, Southeast Minahasa Regency, whether conditions at that location was suitable for the development of the banana plant abaca (Musa textilis NEE), or not.  This research was carried out on site estate of PT. Viola International Fiber in Silian Village.  Taking the soil samples at a depth of 0-20 cm and 20-40 cm in as many as six points.  Soil analysis was done in the Laboratory of Physics and Soil Conservation Soil Department, Faculty of Agriculture, University of Sam Ratulangi Manado.  The research was conducted with Descriptive Survey Method and the data ware collected in the form of a table, then drawn up and analyzed were descriptive.  The observed parameters were: soil texture, soil permeability, soil bulk density, moisture content of the soil, rainfall data, and elevation. The results of this study showed that, data and information on the physical properties of soils and the condition of the site showed that the land was suitable for crop growth of abacá.  Key words: physical properties of soils, Banana and Abaca (Musa textilis NEE)
ANALISIS CADANGAN KARBON DI HUTAN MANGROVE DESA BAHOI Ruth Polii; Johnny S. Tasirin; Semuel P. Ratag
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.24326

Abstract

Bahoi Village has an area of mangrove forest which is estimated to be as large as 36 ha which is well preserved by its people. The use of mangrove forests that do not consider the ecological role of mangrove forests can be one of the biggest threats to their sustainability. This study aims to calculate the stored carbon stock and species dominance in the Bahoi Village mangrove vegetation. This research is expected to be a source of data and information on carbon reserves, tourism management, species conservation, or sustainable production in Bahoi Village. The research method is systematic plot sampling. There were 15 plots with 5 plots each in 3 different cover types namely residential, tourism trail, and open tourism areas. Analysis of carbon stocks used alometric equations, structure and composition used INP, the results shows that carbon reserves are mostly in Sonneratia alba (64.41 kg / ha), followed by Bruguiera cylindrica (44.54 kg / ha), Rhizophora mucronata (43.04 kg / ha), Bruguiera gymnorhiza (35.88 kg / ha), Ceriops tagal (28.77 kg / ha), and the lowest Rhizophora apiculata ( 16.80 kg / ha). The highest carbon stock is found in residential area (45,39 kg/ha) followed by tourism trail (36,59 kg/ha) and open tourism area (29,29 kg/ha). Keywords: Mangrove Forest, Carbon, Bahoi
ANALISIS SIFAT KIMIA TANAH PADA TANAH YANG DI TANAMI TANAMAN TOMAT(Solanum Iycopersicum L)DI DESA TONSEWER MINAHASA ANALYSIS OF SOIL CHEMICAL PROPERTIES ON SOILS THAT ARE TOMATOUS PLANTS (Solanum Iycopersicum L) IN TONSEWER MINAHASA VILLAGE Steven Tambanaung; Diane D, Pioh; Wiesje J. N. Kumolontang
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.24329

Abstract

ABSTRACT Soil  is a natural body that occupies most of the surface of planet Earth.  Soil as a medium for growing plants with various properties possessed. Tomato cultivation is not only on plantation land.  Soil chemistry concerns the composition of minerals, organic matter, and environmental factors. Components of soil chemistry include pH, organic C and essential nutrients. Soil reaction (pH) is a characteristic or parameter that shows acidic conditions in the soil. The taste of tomatoes is sweet - fresh sweetness that can provide freshness to the body. The optimal rainfall for tomato growth is 100-220 mm / rain with the ideal daily temperature, which is 25-30oC. Keywords: Soil Chemical Properties, Tomato Plants

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