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PERKEMBANGAN POPULASI KEPIK (Nesidiocoris tenuis DAN Lygus sp.) PADA TANAMAN KENTANG DI DESA LINELEAN KECAMATAN MODOINDING Ester . Kotambunan; Max . Tulung; Daisy . Kandowangko; Juliet M.E. Mamahit
COCOS Vol. 2 No. 3 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i3.1483

ABSTRACTPotato (Solanum tuberosum L.) is one of the important vegetable commodities that have great potential to support food diversification program. . Besides the development of the snack industry and fast food restaurants are one of the raw material is potato thus increasing the demand for potato products both in quantity and quality that is safe for consumption. This study aims to determine the population growth miridae (Nesidiocoris tenuis and Lygus sp) on potato in Linelean Village District Modoinding. The research took place for two months from May to July 2012. Observations development of populations miridae (N. tenuis and Lygus sp.) Executed directly on the potato crop by counting the number of individuals per plant nymph and imago. Observations were carried out 5 times since 3 weeks old plants at intervals of 2 weeks is 3 (wap), 5 (wap), 7 (wap), 9 (wap), and 11 (wap). Each observation was observed 20 samples with random sampling method. The results showed the populations N. tenuis is found only on the observations I 3 (wap) and observation II 5(wap) with the average population of the observations I: 0,50 individuals and observations II: 0,80 individuals. While the populations Lygus sp. found in the observations I 3 (wap) to IV 9 (wap) with the average population of the observations I: 0.65 individuals, observations II: 1.10 individuals, observations III: 1.70 individuals, and observations IV: 1.40 individuals . Symptoms of N. tenuis is on the trunk and branches of the potato crop stylet puncture marks that are yellowish. While symptoms of Lygus sp. attack will not immediately apparent but will be visible after the leaves begin to open and enlarge.Keywords : Potato, Nesidiocoris tenuis, Lygus sp

JENIS DAN POPULASI SERANGGA DI AREAL TANAMAN NENAS (Ananas Comosus (L.) Merr.) KECAMATAN PASSI BARAT KABUPATEN BOLAANG MONGONDOW Slamet Pulukadang; Juliet M.E. Mamahit; Moulwy F. Dien; Guntur S.J. Manengkey
COCOS Vol. 4 No. 6 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i6.4844

ABSTRACTThis study aims to determine the insect types and populations at the areas of Pineapple plants near housing ecosystems and near forest ecosystems. The experiment was conducted in centers of Pineapple plantation in the Mongkonai and Lobong village District of Bolaang Mongondow and at the Laboratory of Entomology and Plant Pests UNSRAT Faculty of Agriculture for five months from July to December. insect Observation on pineapple plants is done by using the method of trapping wells (pithfall) on generative plant and samples insects taken three times. The results showed that there are four associated insect Order on the areas of Pineapple plants near housing ecosystems are: Order Orthoptera (Family Acrididae, Gryllidae); Order Coleoptera (Family Scolytidae, Scarabaiedae); Order Diptera (Family Drosophilidae, Bombyliidae); and the Order Hymenoptera (Family Formicidae), while on the area of Pineapple planting near the forest ecosystem there are five insects Order are :: Order Orthoptera (Family Gryllidae, Acrididae, and Blattidae); Order Coleoptera (Family Scarabaeidae, Scolytidae, Cicindelidae, Crysomelidae, and Alleculidae); Order Diptera (Family Drosophilidae, Bombyliidae, and Tachinidae); Order Hymenoptera (Family Formicidae); and the Order Lepidoptera (Family Pyralidae). The results also obtain the number of insects found in varying amounts each Family. The number of insects found on average ranges from 2-423 insect.Key words : the insect types and populations, Pineapple plants

PEMANFAATAN EKSTRAK BIJI Barringtonia asiatica L. UNTUK PENGENDALIAN KEONG MAS PADA TANAMAN PADI DI DESA POPONTOLEN KECAMATAN TUMPAAN KABUPATEN MINAHASA SELATAN MARGONO .; Jusuf Manueke; Juliet M.E. Mamahit; Caroulus S. Rante
COCOS Vol. 4 No. 6 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i6.4845

ABSTRACTMargono. Use of seed extract Barringtonia asiatica L. to control golden snail in rice plants at village Popontolen, subdistrict Tumpaan, district Minahasa Selatan. Under Guidence Dr Ir Jusuf Manueke, MP as chaiman, Dr. Ir. Juliet M.E. Mamahit, M.Si and Ir. Caroulus S. Rante, MS as member.The study aimed to determine the effect of seed extract Bitung , B. asiatica against golden snail mortality. The experiment was conducted in the village of popontolen, subdistrict Tumpaan, Minahasa Selatan Regency. The duration of less than six months of the study, which lasted from August 2013 until January 2014. Research using experimental methods with Complete Randomized Design (CRD) consisting of four treatments and three replications. The treatment used is the concentration of seed extract Bitung 0% (control), 10%, 20% and 30%. Observations death snails performed 6, 12, 24, 30, 42, 54 and 66 hours after application.Symptoms begin with snails death marked the release of mucus from the surface of the body and the body slowly over time regardless of the shells. The observation of 6 hours after the application has been found dead snails in the treatment of Bitung seed extract with a concentration of 20 % and 30 % , ie respectively 14.31% and 28.23%. In observation 12 hours after application, the third seed extract concentration and Bitung (10%, 20% and 30%) had deadly snails above 80.00%. Therefore the use of seed extract B. asiatica with a concentration of 10% can already be used to control snails in rice plants.Keywords: Barringtonia asiatica, golden snail, Minahasa Selatan

PENGGUNAAN BEBERAPA JENIS PERANGKAP DENGAN FEROMON TERHADAP KUMBANG KELAPA (Oryctes rhinoceros L.) (COLEOPTERA : SCARABAEIDAE) Marco M. Supit; Dantje Tarore; Juliet M.E. Mamahit; James B. Kaligis
COCOS Vol. 5 No. 2 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i2.5591

ABSTRACKCoconut plant (Cocos nucifera L) is a multifunction plant or a plant that has a high value of economy. In every part of the coconut plant can be use for every people needs because almost in every part of plant such as: the trunk, root, leafs and the fruits can be use for the everyday needs. Pest is one of the inhibitor factor in the production of coconut. The purpose of this research is to know the use some kind of traps with pheromone to the coconut beetle O. rhinoceros. This research is held in four different villages Kima Atas, Mapanget, Kayuwatu and Paniki, since last June until September 2013. This research use four different kinds of traps: trap A, trap B, trap C and trap D and in every inside trap there is a pheromone with the same dosage placed in four location were in every location there are four kinds of traps. The materials and the tools the we use in this research is sintetic pheromone for O. rhinoceros (ethyl-4-mathyloctanoata), four kinds of trap from Balit Palma, knife. machete, container, marker, label, camera and stationery. The result of this research shows that the largest amount of O. rhinoceros is found in trap B (126.0 insects),then trap C (30.0 insect), trap A (24.0 insects), and the lowest is found in trap D (15.0 insect), and base on the gender, female (111 insects) male (84 insect).Keywords: Coconut, O. rhinoceros, Pheromone, Trap

PADAT POPULASI DAN PERSENTASE SERANGAN Paracoccus marginatus Wiliams and Granara de Willink (HEMIPTERA: PSEUDOCOCCIDAE) PADA PERTANAMAN PEPAYA MONOKULTUR DAN POLIKULTUR DI KECAMATAN DIMEMBE KABUPATEN MINAHASA UTARA Riedel Lolong; Juliet M.E. Mamahit; Odi R. Pinontoan; Betsy A.N. Pinaria
COCOS Vol. 5 No. 4 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i4.6229

ABSTRACTPapaya is a fairly widely cultivated plant in Indonesia. Fruits of the plant are most commonly used for directly consumption, while the flowers and leaves use as a vegetable. Lately, there are new pests that attack papaya plants, which is papaya mealybug Paracoccus marginatus. This research aimed to find out the population and percentage of the P. marginatus attack on papaya cultivated by monoculture and polyculture. The research was conducted in District of Dimembe, North Minahasa Regency. The research was carried out for 7 months, March to September 2014. This research used a survey methods. Three villages used as sampling sites were in Matungkas Village, Laikit Village and Dimembe Village. Each village was taken three locations of papaya cultivated consisted of monoculture and polyculture. Observations percentage of the attacks mealybugs done visually by symptom. Parts of plants observed were leaf, stem, petiole and fruit.The highest population of P. marginatus found in papaya plantation monocultures in the Matungkas Village with an average of 3669,00 mealybug, followed by the population in the Village of Dimembe 3205,33 mealybug and least found in the Laikit Village with 1379,22 mealybug, while the highest population of P. marginatus in papaya plantation polyculturefound in the Matungkas Village with an average 495,67 mealybug, then in the Laikit Village with an average 423,11 mealybug and the lowest population found in the Dimembe Village with an average 314,00 mealybug. Papaya plantation in Matungkas Village was the highest location attacked and the most parts of the plant that were attacked was leaves with a percentage of 93,33% on the location of monoculture plantations and 63,33% in polyculture plantations location.Keywords: Papaya, Paracoccus marginatus, Population and Percentage of attacks

GEJALA DAN INTENSITAS SERANGAN HAMA KUTU DAUN (Chaetosiphon sp) PADA TANAMANSTROBERIDI KELURAHAN RURUKAN KOTA TOMOHON Zainudin Limbanadi; Juliet M.E. Mamahit; Christina L. Salaki; Guntur S.J. Manengkey
COCOS Vol. 6 No. 3 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i3.6934

ABSTRACTStudy aims to determine the symptoms and the intensity of aphids the strawberry (Chaetosiphon sp) were held in the Village Rurukan Tomohon. This study was conducted over four months from February to May 2014. Study uses survey and observations of aphids and deliberate sampling on strawberry plants were observed.Field research was conducted in the area of planting strawberries and laboratory observations carried out at the Laboratory of Entomology and Plant Pests Faculty of Agriculture, University of Sam Ratulangi. Subplot observation intensity of the attacks on strawberry crop land has a length of 2 m and a width of 1 m to 12 m long beds. In each of the beds made two subplots, each subplot were taken 20 plants.The results showed that the strawberry aphids (Chaetosiphon sp) affects plant growth both in the vegetative and generative phase of the insect in the vegetative phase of the plants become stunted, and attacks on the generative phase led to the formation of flowers and fruit inhibited. Average intensity of the attacks in of strawberry aphidsRurukan Tomohon increased every week with the highest intensity in the sixth week, namely 46.0% plants affected in the first observation and 55.0% plants affected in the second observation.Keywords: Symptoms, attack intensity, Chaetosiphon sp.

JENIS DAN POPULASI SERANGGA HAMA YANG BERASOSIASI PADA TANAMAN KENTANG (Solanum tuberosum L) DI KECAMATAN MODOINDING Audy R. Bororing; Juliet M.E. Mamahit; Daisy S. Kandowangko; Noni N. Wanta
COCOS Vol. 6 No. 6 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.8041

ABSTRACTThe research aims to find out about the type of insect pests population in potato plants Solamun tuberosum L. in Modoinding, South Minahasa. The research was conducted on the potato plants in Modoinding, South Minahasa. The research was carried out by using the survey method on potato in Modoinding's villages, South Minahasa, such as Palelon Village, Makaaroyen Village, and Lineleyan Village. The sampling was carried out with a diagonal incision method that established of five sub-plot that is on the corner and the middle of the sampling sites. The sampling was done by using insect nets that swung above the potato crop for ten times the double swing. The netted insects are immediately put into the "killing bottle" then collected in 70% alcohol to be identified. Identifying the type of insect pests is done by using the facilities of the Entomology and Pest Plant Laboratory, Faculty of Agriculture, UNSRAT. The results of the research of the associated pests on potato was found about eight kinds of insect pests, such as Empoasca sp. 109.03, Drosophila sp. 37.03, Nesidiocoris sp. 34.11, Lirionyza sp. 10.72, Lygus sp. 4.47, Phthorimaea sp. 2.97, Antractomorpha sp. 1.61, and Epilachna sp. 0.69. The average of the highest populations of insect pests are found in Makaaroyen Village with 37.99, whereas in Palelon Village with 22.79, and the lowest is in rural Lineleyan Village with 14,49.Keywords: Population, Pest, Potato

POPULASI HAMA WERENG HIJAU (Nephotettix spp.) DAN WERENG PUNGGUNG PUTIH (Sogatella furcifera Horv.) PADA TANAMAN PADI SAWAH DI KECAMATAN SONDER KABUPATEN MINAHASA Magdalena M. Kesek; Jantje Pelealu; Noni N. Wanta; Juliet M.E. Mamahit
COCOS Vol. 8 No. 1 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i1.11325

ABSTRACT Â The study aims to determine the abundance of green leafhopper (Nephotettix spp.) pest populations and white back planthopper (Sogatella furcifera Horv.) in rice in the District Sonder.Â This research was conducted in two villages of Tincep and Kauneran during the six months from November 2014 through April 2015.Â ThisÂ study used a survey method in rice crops in two villages. Every village observations determined three plots were divided into five subplots of observations for sampling. Research shows that green leafhopper populations in rice cultivation isÂ highest in the third observation, in the tincep village is 10,40 tail and village kauneran 9,33 tail. Lowest population occurred when the first observation in the Tincep village 5,06 tail and Kauneran 4,13 tail. Whereas the population of white back planthopper in rice crops in highest in the first observation that, in the village of kauneran 6,26 tail and in village Tincep 6,20 tail. Lowest population occurs on the last observation is at kauneran villages 2,20 tail and Tincep village 1,80 tail. BasidesÂ green leafhopper and white back planthopper found also other insects both as pests and natural enemies.

POPULASI PARACOCCUS MARGINATUS WILLIAMS & GRANARA DE WILLINK PADA TANAMAN PEPAYA VARIETAS THAILAND DAN VARIETAS LOKAL DI KECAMATAN DIMEMBE KABUPATEN MINAHASA UTARA ANNA MONICA MANGARE1 Anna Monica Mangare; Juliet M.E. Mamahit; Ventje Memah
COCOS Vol. 7 No. 5 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i5.14057

ABSTRACTPapaya is a plant widely cultivated in Indonesia. One part of the plant that is oftenconsumed by people is the fruit. In Indonesia recently emerging new pest of papaya plants,the papaya mealybug Paracoccus marginatus. This study aims to determine the populationP. marginatus in thailand papaya fruit varieties and local varieties. The experiment wasconducted in three villages in the district Dimembe North Minahasa regency. Implementationof the study lasted for six months, namely from March to September 2016. This study used asurvey method in three locations that have been defined for the sampling, namely Matungkasvillage, Laikit and Dimembe. Each village selected three planting locations Thailand andlocal papaya varieties. Paerts of plants observed is the fruit. The results showed that thehighest population of mealybug P. marginatus found in papaya varieties Matungkas Thailandvillage, 49,66 grains egg, nymph 557,00 individual, 8,66 imago male individual and femaleimago 138,33 individual. Furthermore, the population in the village Laikit, namely 36,33grains egg, nymph 635,33 individual, 1,00 imago male individual and female imago 40,66individual. The next lowest is in the mralybug population Dimembe with an average of148,66 grains egg, nymph 412,00 individual, the individual 4,66 imago male and femaleimago 58,66 individually, while the local varieties found in the highest population Laikitvillage with an average of 318,66 nymph individual, and female imago 20,33 individual. Thevillage Matungkas second highest with an average of 55,00 grains egg, nymph 214,00individual, 1,00 imago male individual and female imago 40,66 individual. FurthermoreDimembe village which is the lowest population, seen from an egg stadia grains 36,00,214,33 nymph individual, and female imago 38,33 stadia individual.Keyword : Population, Papaya, Paracoccus marginatus.

SERANGGA-SERANGGA yang BERASOSIASI pada TANAMAN CABAI KERITING (Capsicum annum L.) di KELURAHAN KAKASKASEN II KECAMATAN UTARA Brigitha M. Gobel; Robert W Tairas; Juliet M.E. Mamahit
COCOS Vol. 8 No. 5 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.15699

ABSTRACT Chilies curly contains nutrients necessary for human health. In an effort to increase crop production curly chili farmers are often constrained by insects that exist in the land for planting chilli curls considered everything is pests and diseases. In an effort to increase crop production curly chili farmers are often constrained by insects that exist in the land for planting chilli curls considered everything is pests and diseases. This study aimed to determine the insects associated in pepper curly (C. annuum) in the Village of North Tomohon sub district Kakaskasen II and the research conducted over six months from June to November 2016. With two different planting patterns are monoculture and polyculture. The method used is descriptive quantitative method to conduct a field survey. Sampling was insect that is directly using the killing bottle containing 70% alcohol. Insects found are: Ordo Lepidoptera (Famili Noctuidae), Ordo Orthoptera (Famili Tettigoniidae), Ordo Homoptera (Familli Cicadellidae), Ordo Hemiptera (Aphididae), Ordo Coleoptera (Famili Coccinelidae, Scarabaeidae, Curculionidae dan Staphylinidae), Ordo Diptera (Famili Dolichopodidae dan Syrphidae), Ordo Hymenoptera (Famili Apidae).

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