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Articles 8 Documents
Search results for , issue "Vol 1, No 1 (2018)" : 8 Documents clear
ANALISIS KEBUTUHAN LUASAN RUANG TERBUKA HIJAU KOTA MANADO BERDASARKAN FUNGSI PENYEDIA OKSIGEN Rahman, Fadli; Kalangi, Josephus I.; Saroinsong, Fabiola B.
COCOS Vol 1, No 1 (2018)
Publisher : COCOS

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Abstract

AbstractIncreased population indirectly resulted in the development of urban areas physically and tends to alter green open spaces into built areas to meet the needs and improve services to the population. As a result there is an increase in air temperature, decrease in ground water quality and urban air quality, and high noise level. The existence of urban green open space arrangement can overcome the development as well as to overcome the ecological impact of various disruption of human activities on the natural process in the City of Manado. Then to realize the ecological balance in the Manado city, there is need of green open space development approach that refers to the area and the need of oxygen. This study aims to calculate the area of green open space needed by Manado City based on oxygen supply function. Data analysis of green open space requirement based on area according to Law Number 26 Year 2007 and based on oxygen requirement using Gerakis formula (1974) modified by Wisesa (1998). The results show the green open spaces needed in Manado City area of 2953.45 ha. In meeting the needs of green open spaces Manado City based on the oxygen provider function then everyone is required to plant 3 trees, on an area of 25 m2.Keywords: green open space, oxygen demand, Manado City.
POPULASI DAN SERANGAN LARVA Batocera hercules Boisduv (COLEOPTERA: CERAMBYCIDAE) PADA TANAMAN PALA DI KECAMATAN KAUDITAN KABUPATEN MINAHASA UTARA Mamonto, Ruknindi D.L Mamonto D.L; Dien, Moulwy Frits; Rimbing, Jimmy
COCOS Vol 1, No 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.19300

Abstract

ABSTRACTNutmeg plant is a superior plant of plantation sub-sector of North Sulawesi Province. Basically nutmeg plants are still a source of income farmers at the center of nutmeg production in North Sulawesi. In the development of plants Pala problem faced by farmers is borer stem borer Batocera Hercules. This study aims to determine the population and attack of B. hercules, on nutmeg plants in Kauditan District of North Minahasa Regency. The research used survey method on nutmeg plantation in Kauditan District of North Minahasa Regency. Servey result set three villages as sample location that is Karagesan village, Treman village and Watudambo village.Determination of sample plants was done randomly by selecting each of 20 trees in each village. Observation and sampling is done 4 times with interval once a week. Thus, the total sample crop at each sample/village location is 80 trees. To avoid double observation, the observed plants are marked at the base of the stem and are not observed again.The results showed that from 80 sample plants observed in each village in Kauditan District of North Minahasa Regency, the largest larvae population was found in the Karegesan village ie as many as 38 heads, then Treman village 7 and Watudambo Village 2. The highest percentage of affected plants was found in Keregesan Village which reached an average of 60.00%, then Treman village 26.25% and Watudambo Village 15.00%. The highest level of damage to the crop was found at the site of Karegesan village which reached an average of 2.11 holes / trees, Treman village averaged 0.37 hole / tree, Watudambo village on average 0.16 hole / tree.Keywords : Plant Nutmeg, Population of larva, Batocera hercules
APLIKASI KOMPOS SEBAGAI PEMBENAH PADA BAHAN INDUK TANAH TAMBANG EMAS DI DESA TATELU KECAMATAN DIMEMBE Sunuk, Yohanes; Montolalu, Maria; Tamod, Zetly E.
COCOS Vol 1, No 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.19519

Abstract

ABSTRACT Compost is a product of decomposition of organic materials accelerated by various microbes to become weathered. This study aims to examine the change of soil chemical properties of the gold mine soil before and after the application of soil composting materials. The research method used is descriptive from the analysis of soil chemical properties such as : Color, pH, C-Organic, N, P, and K. Parent material of gold mine soil generally have pale yellow color, low pH  (acid), C-organic , N, P, and K are not ideal or low. The condition of the mine ground material is in the phase of damage. Soil ameliorant are natural or synthetic materials used to cope with soil damage. Compost is one of the organic soil ameliorant with the function of improving the condition of damaged soil and also as a source of nutrients. Compost will give changes to the gold mine soil material but not quickly, it takes a relatively long time.  Keywords: Compost, Soil ameliorant, Material of Gold Mine Ground.
PENGARUH PUPUK KANDANG DAN TANAH BERTEKSTUR LIAT TERHADAP SIFAT KIMIA TANAH TAILING SERTA RESPON TANAMAN JAGUNG MANIS (Zea mays Saccharata) Trisnady, Mei Cen; Sondakh, Tommy D.; Kawulusan, Rafli I.
COCOS Vol 1, No 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.19179

Abstract

ABSTRACTThe effect mixing of chicken manure and clayed soils (soil colloids) into ex-mining soils (tailings) on soil chemical properties and growth of sweet corn plants were the objective of this study. Tailings and the clay soils were taken from Tatelu Village of Dimembe Subdistrict and from Paniki Mapanget Subdistrict, respectively. This field research was conducted in Tara-tara II Subdistrict Tomohon West, District of Tomohon. Soil analyses were conducted in Soil Chemistry and Soil Fertilizer and in Soil Physics and Soil Conservation Laboratory at Soil Department, Agriculture Faculty UNSRAT Manado. A completely randomized design consisting of 7 treatments in 4 replicates is utilized in experiment using a 30 kg polybags. The results showed that mixing of clay-textured soil and manure on tailings gave significant effect on soil cation exchange capacity, soil P-available, K-available, corn dry weights, and corn cob weights. However, mixing materials have no significant effect on pH, C-organic content, and total N-content. The best combination mixing of materials is 40 persent clay textured soil and 30 tons of chicken manure and tailings.Keywords: Tailings, Clay Textured Soil and Chicken Manure
PopulasiWerengHijau(Nephotettixspp.)PadaTanamanPadiSawah di KecamatanDumogaTimurKabupatenBolaangMongondow Lepa, Christman F.; Meray, Elisabeth R. M.; Manueke, Jusuf
COCOS Vol 1, No 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.19178

Abstract

ABSTRACTThe study aimed to find out the population of green leafhoppers Nepotettix spp to rice plant. The study was conducted in Mogoyunggung, Tonom, and Imandi villages, east Dumoga district, Bolaang Mongondow regency. The study was held from April until june 2017. The study used servey method in these three villages. The study surveyed a field of 500 square meters from each village. The sampling used diagonal slice method by determining five sub-plots in each sampling area.The result showed that the average population of green leafhoppers Nepotettix spp on the first observation reached the highest number of 8,33, meanwhile on the third observation the lowest number showed 4,0, on the second observation is 4,13.Keywords : The population of green leafhoppers ; Nephotettix spp: Rice plant
KAJIAN SIFAT FISIK DAN KIMIA TANAH PADA AREAL PERTANAMAN SALAK (Salacca zalacca) di DESA PANGU KABUPATEN MINAHASA TENGGARA Woran, Rifiani F.; Nangoi, Ronny; Lengkong, Jeanne E.
COCOS Vol 1, No 1 (2018)
Publisher : COCOS

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ABSTRACTComparing physical and chemical properties of the soil in the salak (Salacca zalacca) plantation area of Pangu village and its relation to the growth and production of salak at various altitudes of 671 m asl, 512 m asl, and 400 m asl are the objectives of this study. The research was conducted in salak plantation of ≤ 10 years old at Pangu Village of South Minahasa Regency. Soil analyses of purposive sampling were conducted at the Laboratories of Soil and Soil Conservation Unit and of Soil Chemistry and Fertility Unit, Soil Science Department Agriculture Faculty UNSRAT Manado for 2 months (May to June 2017). Soil physical and chemical properties of all sites have relatively similar, ie.: sandy loam textures, more rapid permeability and low to moderate contents of N, P, K, and C-organic and moderately acidic soil pH. The reasons are similarity type of soils (Udepts of Inceptisols) in the study area. The soil fertility at altitude of 512 m asl is better than that of the other two altitudes, but the soil physical properties of 400 m asl and of 671 m asl are better than that of 512 m asl. Therefore, salak production in the three locations are more depending on the management of the plantation itself. Keywords : Physical Properties of Soil Chemistry and Salak Plant
Ukuran Populasi Kroto dan Tumbuhan Inang Semut Rangrang di Hutan Pantai Moinit Kabupaten Minahasa Selatan Wenda, Yunias; T, Frans; Kainde, R
COCOS Vol 1, No 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.19301

Abstract

ABSTRAKKroto is an ant egg rangrang and is the result of non-timber forest. Kroto is useful for birds chirping food and fish bait. Excessive utilization will cause the ant population to decrease. Rangrang ants also play a role to preserve the forest because it is a predator of certain pests.The research was conducted in Moinit coastal area of South Minahasa regency in November-December 2016. This study aims to find out the population of kroto and plant species ant ant rangrang. The method used is to record all the trees contained nests and purposive to determine the sample. The results of the study were 6 species of host plants from the ant rangrang namely ketapang (Terminalia cattapa),mengkudu (Morinda citrifolia L.), urlaut star (Calophyllum inophyllum), bitter tree (Barringtonia asiatica), waru (Hibiscus tiliaceus L.), banyan tree (Ficus benjamina L) .Number of nest / type of host plant, nest of ketapang 5 nest, mengkudu 3 nest, 4 nest urlaut, nest of bitung 5 nest, waru 4 nest, banyan tree 7 nest. The average number of hatchlings / species of host plants consists of ketapang 46,68 cm, mengkudu 40,57 cm, urlaut star 44, 51cm, tree bitung 41,71 cm, waru 48,36 cm, 36 cm cold tree. The average number of shoots / nests / granaries is exposed to cramped 74 kroto, mengkudu 75 kroto, urlaut 74 kroto, mengkudu, bitung 75 kroto, waru 78 kroto, banyan tree 38 kroto. Keywords: Kroto, non timber forest products, forest….
PENGARUH PENGGUNAAN MULSA PADA PERTUMBUHAN DAN PRODUKSI TANAMAN KENTANG (Solanum tuberosum L.) DI DATARAN MENENGAH Enoch, Giavirna J.; Lengkong, Edy F.; Pongoh, Jantje
COCOS Vol 1, No 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.19302

Abstract

ABSTRACTThe objective of this study was to study the effect of mulch use on the growth and production of potato crops in the middle plains and to determine the type of mulch suitable for potato crops in the middle plains. This research was conducted in Tompaso II Village District Tompaso, Regency of Minahasa, with the height of 765 mdpl. This study was implemented for 4 months, from May to August 2016. This study used a Completely Randomized Design experiment consisting of 3 treatments with different repetitions. The Treatments are Plastic Silver Black Mulch repeated 3 times, Straw Mulch repeated as much as 4 times and Control repeated 6 times. Based on the result of statistical analysis, there is no significant difference between the treatment can be caused by environmental factors and genetic factors seedings are planted. Environmental factors such as temperature, humidity, rainfall, light intensity, soil fertility, and the presence or absence of pests and diseases will determine growth and production in plants.Keywords: the potatos, medium plains, mulch

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