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Search results for , issue "Vol 6, No 6 (2020)" : 10 Documents clear
SISTEM TANAM JAJAR LEGOWO PADA PERTUMBUHAN JAGUNG MANIS (Zea mays L. Saccharata) Feidy, Erungan; Wiske Ch, Rotinsulu; Sesilia A, Wanget; Langimanapa S, Demmasabu
COCOS Vol 6, No 6 (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.) Gabai, Devita; Tarore, Dantje; Engka, Reity A.G.; Nangoi, Ronny
COCOS Vol 6, No 6 (2020)
Publisher : COCOS

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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; Tasirin, Johny S.; Nurmawan, Wawan
COCOS Vol 6, No 6 (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
POPULASI DAN INTENSITAS SERANGAN HAMA WALANG SANGIT (Leptocorisaoratorius) PADA BEBERAPA VARIETAS TANAMAN PADI SAWAH DI DESA TOLOTOYON KABUPATEN BOLAANG MONGONDOW SELATAN Paputungan, Ayu Ningsih; Pelealu, Jantje; Kandowangko, Daisy S.; Tumbelaka, Selvie
COCOS Vol 6, No 6 (2020)
Publisher : COCOS

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Abstract

ABSTRAKThe research aims to find out: (1). The population of walang sangit pest in several rice varieties inTolotoyon village, Bolaang Mongondow Selatan Regency; (2). pest attack wit sangit on severalvarieties of rice in the village Tolotoyon Bolaang Mongondow Regency.The study was carried outin a rice-growing area owned by farmers in Tolotoyon Village, Bolaang Mongondow SelatanRegency. The duration of the study is 3 (three) months, from December 2019 to February 2020.Bandage using Random Group Design (RAK) with the treatment of rice plant varieties, namelyCiherang, Inpari 9, and Situ bagendiT and repeated three times. The research was conducted atthree locations, each measuring approximately one (1) hectare. Each location planted one variety.Sampling was conducted three (3) times. Sampling is carried out on plants that are ten weeks oldwith a retrieval interval of one (1) week. Parameter the number of nymphs and image caught.Observation of the intensity of pest attacks is carried out visually based on the symptoms ofWalang Sangit attack on the malaise of rice crops. Observations are made on generative phase riceplants. Parameter the number of malaises affected. The results showed that the highest walangsangit pest population was found in the Ciherang variety of 6.8 Walang Sangits, followed by Inpari9 which is 5.6 Walang Sangits and the lowest in Situ bagendit which is 3.1 The yield on walangsangit pest attacks on inpari varieties was 7.0 percent, followed by Ciherang 6.1 percent, whileSitu Bagendit 3.1 percent.The difference in population and intensity of Walang Sangit pest attackson some varieties of rice crops, caused by the character of rice crops, such as the number of shootsand the color of grain.Keywords : Rice varieties,Leptocorisa Oratorius, population, and intensity
KAJIAN KESESUAIAN LAHAN SECARA FISIK UNTUK TANAMAN CENGKIH DI DESA TENGA KECAMATAN TENGA Worung, Vesrter J.; Mawara, Jody M.; Lientje Th., Karamoy
COCOS Vol 6, No 6 (2020)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30766

Abstract

ABSTRACKVester J. Worung. 13031108059. Physical Land Suitability Study For ClovePlants in Tenga Village, Tenga District. Under the Guidance of Dr. Ir. Jody M.Mawara, M.Si (Chair) and Dr. Ir. Lientje Th. Karamoy, M.Si (Member).This study aims to evaluate the leval of land suitability for clove plants in thestudy area and the factors that limit them, and to determine the distribution of thesuitability of clove plantations in the study area. This research is excpected to beuseful to provide information to farmers in the middle region and the local govermantabout land characteristic and land suitability so that it can contribute to planning landuse for cloves plants.The method used in this research is a descriptive survey method that isdirectly observed in the field, namely soil depth, soil drainage, erosion, flood hazards,surface rocks, slope, rainfall, air humidity and temperature obtained from BMKG(Meteorology and Geophysics Agency) while the soil texture is determined in thefield by feeling and soil permeability. Retrieval of land characteristics ini the fieldusing the land unit approach.The results showed that the actual land suitability class for clove plants inTenga Village, Tenga District was obtained : S1 class (very suitable) on land unitsV1 (LaIIKl), V3 (LaIKl) and V4 (LaIIIKl) land area of 1.450 ha (31,73 %); S3 class(marjinal suitable) on land unit V5 (LaIVKl) land area of 720 ha (15,75 %) ; N class(not suitable) on land units V2 (LaVKl), V6 (LaVIKl) and V7 (LaVKl) covering anarea of 2,400 ha (52,52 %) with limiting erosion hazard factors (eh) especially theslope factor.3Pay attention to limiting factors in the land unit V2 (LaVKl), V6 (LaVIKl),dan V7 (LaVKl) covering on area of 2,400 h (52,52 %) the risk of erosion (eh)especially the slope factor, then after efforts are made to repair the soil or benchesterraces, individual terraces on clove plants, planting ground cover crops, to protectfrom rainwater that falls directly to the ground and reduce water flow above thesurface so that it can protect the soil from damage caused by erosion, obtained three(3) potential land suitability classes, namely : (1) land suitability S1 class (verysuitable) on land units V1 (LaIIKl), V3 (LaIKl) and V4 (LaIIIKl) land area of 1.450ha (31,73 %); (2) land suitability S2eh class (quite suitable) on the land unit V5(LaIVKl) land area of 720 ha (15,75 %); and (3) land suitability S3eh class (marginalsuitable) on land units V2 (LaVKl), V6 (LaVIKl) and V7 (LaVKl) covering an areaof 2,400 ha (52,52 %) with limiting erosion hazard factors (eh) especially the slopefactor.With this research, the selection of the location of clove plantations isadjusted to the suitability of the land, on land units that area very suitable andmarginal according to the slope factors as a limitation.Keywords: Land suitability, physical characteristics of land, clove plants
IDENTIFIKASI SIFAT KIMIA TANAH YANG DITANAMI TANAMAN KENTANG (SOLANUM TUBEROSUM L.) DI DESA PINASUNGKULAN UTARA KECAMATAN MODOINDING Roring, Michael A.S; Pioh, Diane D.; Najoan, Jemmy
COCOS Vol 6, No 6 (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.
Serangan Parlatoria blanchardii Pada Beberapa Varietas Kurma (Phoenix dactylifera L) Di Pembibitan Mapanget Kabupaten Minahasa Utara Mangudisang, Ricky A.; Rimbing, Jimmy; Rante, Caroulus S.; Lumingkewas, Adeleyda
COCOS Vol 6, No 6 (2020)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30750

Abstract

ABSTRACTP. blanchardii is the major insect pest. Adult and nymph insects, suck nitrogen andmacro elements in leaves. In high-level attacks, P blanchardii causes major damage in the formof decreased P. blanchardii attacks causing date palms to cover a very thick leaf surface so thattranspiration, respiration and photosynthesis are disturbed, causing leaf wilt, inhibiting growthand reduction of mature tree yields and death of trees young. The research was carried out fromNovember 2019 to February 2020 at the Green House of Balit Palma Manado, North Sulawesi.The research method used was RAK with 7 treatments in the form of date varieties and 3replications. This research was conducted by means of quantitative descriptive data collectionmethods or primary data which was carried out directly in the field and saw firsthand P.blanchardii attacks on palm leaves. The things that were observed in this study were, symptomsof P. blanchardii pest attack on date palm leaves, attack on 5 leaflets and 10 leaflets, and 7varieties of date palm attacks per tree. The results showed that the percentage of attacks by P.blanchardii on dates was the highest attack on the Fard variety 55.41% and the lowest attackpercentage was the 9.32% Barhee variety. So it is necessary to do further research on P.blanchardii pests and also control using natural enemies against P. blanchardii pests on datepalms in Indonesia.Keywords: attacks, P. blanchardii, date palm variety
KAJIAN TANGGAP PERTUMBUHAN DAN PRODUKSI TANAMAN KENTANG (Solanum tuberosum L.) PADA PEMBERIAN PUPUK NPK, PUPUK ORGANIK CAIR DAN TRICHOKOMPOS Sondakh, Gabriel M. R.; Lengkong, Edy F.; Sompotan, Saartje; Najoan, Jemmy
COCOS Vol 6, No 6 (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
Analisis Sifat Fisik dan Kimia Tanah pada Lahan Sawah di Kecamatan Kotamobagu Utara Manullang, Josua F.; Pakasi, Sandra E.; Supit, Joice M.; Porong, Jelie V.
COCOS Vol 6, No 6 (2020)
Publisher : COCOS

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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
KEANEKARAGAMAN JENIS BURUNG DI TAMAN HUTAN RAYA GUNUNG TUMPA SULAWESI UTARA Sumbaluwu, Kevin R.; Tasirin, Johny S.; Kainde, Reynold P.
COCOS Vol 6, No 6 (2020)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30659

Abstract

Gunung Tumpa Forest Park has an area of 206.6 ha and is located in twoadministrative areas, namely Manado City and North Minahasa, and there are various typesof land cover, primary forest, secondary forest and cultivation land. Diversity is acharacteristic of a community that is related to the number of species or the richness ofspecies and the abundance of species as a constituent of the community. This study aims toinventory and study the diversity of bird species and their variations based on land covertypes in Gunung Tumpa Forest Park. This research was conducted from February to April2020 using the point count method. The results of this study found 57 bird species from 26families with 1691 individuals, with a Shannon - Wiener index value of 3.10 as an indicatorof high bird species diversity in Gunung Tumpa Forest Park. Keywords : Birds, Bird species diversity, Mount Tumpa

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