Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal EUGENIA COCOS
Emmy Senewe
Unknown Affiliation
Agriculture, Biological Sciences & Forestry

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
PADAT POPULASI DAN INTENSITAS SERANGAN HAMA WALANG SANGIT (Leptocorisa Acuta Thunb.) PADA TANAMAN PADI SAWAH DI KABUPATEN MINAHASA TENGGARA Rivo Manopo; Christina L. Salaki; Juliet E.M. Mamahit; Emmy Senewe
COCOS Vol. 2 No. 3 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i3.1515

Abstract

ABSTRACTPaddy is the most important staple food in Indonesia, since more than half of the population is dependent on the rice that the paddy plants produce. About 1,75 billion of the three billion Asians, including 210 million Indonesians rely on rice as their primary source of calories. The object of this research is to know the population density and infestation intensity of the paddy bug L. acuta on paddy plants in the North Tombatu, East Tombatu and Pasan Districts of the South-east Minahasa Regency. This research is expected to inform about the population density and infestation intensity of the paddy bug L. acuta in several different places and attempts in controlling it. Results of this research show that the paddy bug has spread in paddy fields over the three districts. The highest population was found in the district of East Tombatu (33,9 individuals / ten double sweeps), followed by the Pasan District (24,1 individuals / ten double sweeps), while the district of North Tombatu had the lowest population (9,2 individuals / ten double sweeps). The high paddy bug population is influenced by environmental factors and farmers’ habits in breeding field paddy plants. The intensity of the paddy bug infestation is already high, so the presence of this pest is highly worrisome.Key words : paddy plants, population density and infestation intensity, paddy bug pest (Leptocorisa acuta Thunb.)
PENYEBARAN HAMA Cylas formicarius F. PADA TANAMAN UBI JALAR (Ipomea batatas L.) DI BEBERAPA KETINGGIAN TEMPAT PROPINSI SULAWESI UTARA Noritha Ahuluheluw; Odi R. Pinontoan; Caroulus S. Rante; Emmy Senewe
COCOS Vol. 2 No. 4 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i4.1633

Abstract

ABSTRACTThis study aims to determine the insect pest population C. formicarius at different altitude. The experiment was conducted in several sweet potato plants centers in the Sinisir Village District of Modoinding South Minahasa Regency, Woloan Village 1 District of Central Tomohon, City of Tomohon, and Sumarayar Village District of Langowan Minahasa regency. The study was conducted from June to December 2012. The things that observed in this study were the number of larvae founded in sweet potato tubers are attacked by pests C. formicarius.The results showed that the average population of the pest C. highest formicarius found sequentially in the Village Sinisir, Sumarayar and Woloan 1, ie 23.0%, 10.0% and 6.8%. Chi-square analysis results as indicating a relationship between altitude and pest population C. formicarius. This is indicated by the value of its asymp sig 0.521 greater than 0.05.Keyword: Cylas formicarius F., Ipomea batatas L. Ubi Jalar, Desa Sinisir, Desa Sumarayar dan Desa Woloan 1
JENIS DAN POPULASI SERANGGA PADA TANAMAN TOMAT (Lycopersicum esculentum Mill) FASE GENERATIF YANG MENGGUNAKAN PUPUK ORGANIK DAN ANORGANIK DI DESA TONSEWER KECAMATAN TOMPASO II Selvia D. Sumual; Betsy A.N. Pinaria; Dantje Tarore; Emmy Senewe
COCOS Vol. 4 No. 2 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i2.3736

Abstract

ABSTRACTThe tomato Plant (Lycopersicum esculentum Mill.) is an important horticultural plant and classified as the second most important vegetable after the potato. This research’s purpose is to know what insect species and their populations that are associated to tomatoes in their generative phase, which use organic and non-organic fertilizer, in the village of Tonsewer, Tompaso II district. This research is hoped to give information about the species and population of insects that are associated to tomatoes in their generative phase, which use organic and non-organic fertilizer, and thus become a reference for decisions on controlling. This research was done in fields at Tonsewer village, and insect identification was done in the Entomology Laboratory of Pest and Plant Disease Program. The research was done through surveys and samples were collected by swiping a dragnet in a double swing five times. The result of this research showed that tomato plants using organic fertilizer was associated with 5 insect orders, such as : Hemiptera ; Diptera ; Hymenoptera ; Lepidoptera ; Thysanoptera. Meanwhile, the insects in tomato plants using non-organic fertilizer were classified in 6 orders, such as Hemiptera ; Diptera ; Hymenoptera ; Lepidoptera ; Thysanoptera ; Coleoptera. The highest population of insects in tomato plants using organic fertilizer was Hemiptera (Family Miridae: Nesidiocoris tenuis) with 115 individuals, and the lowest population was Lepidoptera (Family Pyralidae : Diaphania indica), with 2 individuals. The highest population of insects in tomato plants using non-organic fertilizer was Hemiptera (Family Miridae : Nesidiocoris tenuis), with 125 individuals, and the lowest population was Lepidoptera (Family Hesperiidae : Erhionata thrax), with 1 individual.Keyword: tomato plant, organic fertilizer, non-organic fertilizer, insect species, insect population
SERANGGA HAMA YANG BERASOSIASI PADA TANAMAN PEPAYA (Carica papaya L.) DI DESA TALAWAAN KECAMATAN TALAWAAN KABUPATEN MINAHASA UTARA Feybra S. Sigarlaki; Jantje Pelealu; James B. Kaligis; Emmy Senewe
COCOS Vol. 4 No. 6 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i6.4854

Abstract

ABSTRACTFeybra S. Sigarlaki. Pest Insects Associated on Plants Papaya (Carica Papaya L.) in the Village Talawaan, District Talawaan, Regency Minahasa Utara. Under Guidence Prof. Dr. Ir. Jantje Pelealu, MS as chairman, Ir. James B. Kaligis, M.Si and Ir. Emmy Senewe, M.Si as member.The study aimed to determine the association of insect pests on crop Papaya in Village Talawaan, District Talawaan, regency Minahasa Utara. Research conducted surveys using methods purporsive sampling. At planting area observed insects found in papaya plants. Sampling was done by catching insects directly and observe the plants in the form of stems, leaves, and fruit are infested by insects. Insect samples were obtained from the direct retrieval, collected and grouped then taken to the laboratory for identification and documentation. Insect samples were taken on three varieties of papaya, the varieties of Bangkok, Thailand and California. Each set of 20 varieties of trees as a place of observation. The total number of papaya plants sampled 60 trees. Sampling was carried out four times at intervals of two weeks. Things that are observed insects collected on various varieties of papaya.The results of the study found four types of insects that are associated to the papaya plant in the Village Talawaan, District Talawaan. Types of insect pests, namely Aleurodicus sp. (Hemiptera: Aleyrodidae) and Paracoccus sp. (Hemiptera: Pseudococcidae) and their natural enemies, the Coccinellidae (Coleoptera) and Forficulidae (Dermaptera).Keywords : Carica papaya, Minahasa Utara
EFEKTIVITAS MIKROORGANISME ANTAGONIS TERHADAP PENYAKIT KARAT PUTIH PADA TANAMAN KRISAN (Chrysanthemum morifolium Ramat) DI KOTA TOMOHON Aprilia N. Rares; Emmy Senewe; Guntur S.J. Manengkey; Max M. Ratulangi
COCOS Vol. 6 No. 10 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i10.8217

Abstract

ABSTRACT Chrysanthemum or Chrysanthemum marifolium Ramat is one of the types of cut flowers have bright market prospects. As one of the types of ornamental plants, dubbed "King of Cut Flowers" besides having a shape and color which is very interesting, this plant has already started a lot of fans. Diseases that attack chrysanthemum eg rust disease caused by the fungus Puccinia sp. Damage results because this rust disease attacks especially on susceptible plants can reach 100% or crop failure. Rust diseases Puccinia sp. This allegedly carried on planting material (seeds) that has spread to many locations planting chrysanthemums. Tomohon is a center for the production of ornamental plants, especially chrysanthemum in North Sulawesi. Preliminary observations in planting chrysanthemums in Tomohon showed white rust disease. The purpose of this study was to look at and examine the effectiveness of microorganisms antagonistic Trichoderma sp., Pseudomonas fluorescens and Paenibacillus polymyxa to disease chrysanthemum white rust on research was conducted by using the method of randomized block design with four treatments namely A control treatment without application of antagonistic microorganisms, treatment B the application of microorganisms antagonistic Trichoderma sp., the treatment C with application of microorganisms antagonistic P. fluorescens and treatment D with application of microorganisms P. polymyxa. This treatment was repeated 5 times. Rating affected leaves using index calculation disease (severity). The variables measured are severity of affected leaves, leaf number and plant height. The results showed that of some microorganisms are used, equally effective in controlling the disease chrysanthemum white rust is antagonistic microorganism Trichoderma sp. with the value of the average severity of the last observation was 17.71%, followed by P. polymyxa with the average value of 26.78% last severity. Furthermore, the third treatment antagonistic microorganisms do not give effect to the number of leaves and plant height.  Keyword: Chrysanthemum, P. horiana, Trichoderma sp., P. fluorescens, P. polymyxa
POPULASI DAN INTENSITAS SERANGAN HAMA WERENG HIJAU Nephotettix virescens (HOMOPTERA; CICADELIDAE) DI KECAMATAN TOMOHON BARAT KOTA TOMOHON Tuldenigsri H. Gigir; Christina Salakie; Emmy Senewe
COCOS Vol. 6 No. 15 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i15.8854

Abstract

ABSTRACT   In North Sulawesi, there are several major insect pests of rice plants, one of which is green leafhoppers which often cause damage to the rice crop. Aside from being a green planthopper pests also act as an insect vector that can transmit the disease Tungro. The study aims to determine the intensity of pest populations of green leafhoppers N. virescens on rice crops in West Tomohon sub district. The research was conducted in two villages namely Tara-tara and Woloan in the District of West Tomohon Tomohon. The research was conducted from December 2014 through April 2015. This study used a survey method in two villages, namely Tara-tara and Woloan West Tomohon sub district Tomohon. The results showed that the population of green leafhopper pest Nephoettix virescens on rice crops in the district of West Tomohon, Tomohon, is highest in sub Tara tara on observations II, as many as 8.5 tails and lowest in sub Woloan on observations IV, namely 2.3 tail. In general, the population of planthoppers in paddy rice crops in the district of West Tomohon, Tomohon highest average of Tara-tara Village, which is 5.8 tails Woloan Village only 4.9 tails. The intensity of the green leafhopper pest N. virescens on rice crops in the district of West Tomohon, Tomohon, is highest in sub Tara-tara on observations IV, amounting to 29.83 % and the lowest in the sub Woloan the first observation, namely 9.83 %. In general, the intensity of plant hopper pest on rice crops in the district of West Tomohon Tomohon highest average in Tara-tara Village, which is 24.89 % and Woloan Village only 14.89 %.  Keyword :  Freen Planthopper Nephotettix virescens, Paddy, Tomohon
KERAGAMAN JENIS SERANGGA PADA PERTANAMAN STROBERI DI DESA RURUKAN KOTA TOMOHON Estu N. Soeratman; Noni N. Wanta; Emmy Senewe; Robert W. Tairas
COCOS Vol. 6 No. 16 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i16.9589

Abstract

ABSTRACT This study aims to determine the diversity of insects associated to the cultivation of strawberries in Rurukan village of Tomohon. The sampling method used in this study is a relative method. Insect samples obtained from the arrest through some of pit fall traps and yellow sticky traps, were collected, counted and categorized to be identified. The diversity values calculated using the Shannon-Wiener diversity index (H) and Pielou evenness index (E). The results showed that insects caught in pit fall traps there are four of the Order is the order Hymenoptera, Coleoptera, Diptera and Orthoptera while insects found in yellow sticky traps consists of seven orders of 26 families and 27 species of insects. The seventh order of insects found are of the order Thysanoptera, Diptera, Hymenoptera, Coleoptera, Homoptera. Hemiptera, and Lepidoptera. Insects dominated by the order Diptera comprising 11 species (41%), Hymenoptera 10 species (37%), Hemiptera 2 types (7%) and the order Homoptera, Thysanoptera and Lepidoptera each 1 species (4%). The diversity index value of insects in the first and second observation is H '= 2.46 and H' = 2,45, or in other words that environmental conditions on strawberry plants in the village Rurukan in a state of being. While the value of the Evenness index (E ') to the first observation is E' = 0.79 and the second E '= 0.75. The results showed that the community of insects found on strawberry plants in rural areas Rurukan in stable condition with insects uniform
INSIDENSI PENYAKIT BUSUK BUAH PADA TANAMAN PALA (Myristica fragrans H) DI KECAMATAN LEMBEH SELATAN ( Yunita S. Najoan; Max M. Ratulangi; Emmy Senewe
COCOS Vol. 7 No. 4 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i4.12595

Abstract

ABSTRACTThis research aims to study the incidence of black pod disease in plants nutmeg (Myristica fragrans H) in the district of South Lembeh for 3 months ie from January to April 2015. Laboratory studies conducted at the Laboratory of Microbiology and Plant Pathology, Faculty of Agriculture Unsrat Manado and in the field, namely in Subdistrict South Lembeh.Research in the laboratory to determine the fungal pathogen nutmeg pod disease while in the field to determine the incidence of the disease is carried out in the village Papusungan, Kelapa Dua village, village Mawali. To study the incidence of the disease by the method of survey and sampling deliberate on nutmeg experiencing symptoms of dry rot and wet rot.Dried fruit rot disease symptoms in the nutmeg that is, the fruit of pain at first seem small, round spots, the center line of approximately 0.3 cm, this part is brown and settles (concave). The results showed that the characteristic of fungal pathogens causing rot diseases dried fruit on nutmeg in District Lembeh Southern namely Stigmina myristicae, observation of this fungus directly seen in the fruit field diseased fruit rot dried and identified under a microscope. the symptoms of fruit rot disease wet first emerged at the base of the fruit, the affected part color becomes brown, spotting developments rapidly that within a few days its center line has reached 2.5 cm, fruit ill not be concave. the disease is caused by the fungus Colletotrichum gloeosporioides, this fungus konidium greenish brown, oval-shaped.The results of the study the incidence of rot diseases caused by pathogenic fungi, in the field there is a difference incidence of black pod disease caused by a fungal pathogen at different locations, highest average incidence of dried fruit rot 7.90%, and 12.27% wet rot.Key Words : Incidence, Rotten Fruit , Nutmeg
INSIDENSI PENYAKIT BUSUK HITAM PADA TANAMAN BROKOLI (Brassica oleracea var. Italica) DI TOMOHON Fei Sie Lumoly; Emmy Senewe; Guntur S.J. Manengkey
COCOS Vol. 7 No. 4 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i4.12868

Abstract

ABSTRACKThis study aims to determine the symptoms, and incidence of black rot in broccoli. This research was conducted at multiple centers Tomohon on planting broccoli, namely in the Village Kakaskasen, Village and Village Kinilow Paslaten. The study lasted for 3 months that is April to June 2016. The research method was conducted in two places, namely the laboratory of Microbiology and Plant Pathology, Faculty of Agriculture Unsrat Manado and in the location of planting broccoli. This study uses a survey in the field with a purposive sampling and the object of research is the broccoli plants owned by farmers. Observations were carried out six times at intervals of one week. The first observation to a third observation is the observation of the broccoli plant vegetative phase, and the fourth to sixth observation is the observation of the broccoli plant generative phase. The results of this study show early symptoms of infectious disease-causing black rot in broccoli in the vegetative phase is there are yellow spots shaped like the letter V on leaves of broccoli, the area spotting eventually dries and turns brown and then fall, patches can then be spread to all leaves and plants. In the generative phase are rotten and black color on the mass of broccoli flowers. The incidence of infection causes black rot disease in plants of broccoli in the field showed differences in incidence of the disease in each sample location. The average incidence of black rot disease infection highest in the vegetative phase is in the Village Kakaskasen is 67.0% and the lowest incidence is in the Village Kinilow namely 28.7%, while on the generative phase is Village Kakaskasen highest incidence is 44% and the lowest incidence is Kinilow Village of 16.3%
IDENTIFIKASI DAN UJI PATOGENISITAS CENDAWAN ENTOMOPATOGEN LOKAL TERHADAP Leptocorisa oratorius Emmy Senewe; Guntur Manengkey
EUGENIA Vol. 17 No. 3 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.3.2011.3539

Abstract

ABSTRACT Leptocorisa oratorius is one major pest of rice in North Sulawesi. Hence, it is necessary to control the pest. The research objective was to identify and to test pathogenicity of local  entomopathogen fungi which infected  Leptocorisa oratorius. The pathogens were collected through sampling of L. oratorius which had been infected by the fungi in the field. The pathogenic fungi was isolated using PDA medium, identified followed by inoculation for pathogenecity test.  During several sampling pest, it was found that  L. oratorius was attacked by fungal pathogens in the field. The identification revelead that the fungal pathogens were Beauveria sp and Fusarium sp. Both the fungal pathogen produced white mycelium and could only be distinguished using microscope in the laboratory. Result of pathogenicity tests showed that the two fungal pathogens caused different mortality of the L. oratorius. Mortality of  L. oratorius caused by pathogenic fungus Beauveria sp was  30.3% . Whereas, mortality of  L. oratorius caused by Fusarium sp was only 3.33%. Keywords : pathogenic fungi, entomopathogen, pathogenicity tests, L. oratorius
Co-Authors Aprilia N. Rares Aprilia N. Rares, Aprilia N. Betsy A.N. Pinaria Caroulus S. Rante Christina Salaki Christina Salakie, Christina Dantje Tarore Estu N. Soeratman Estu N. Soeratman, Estu N. Fei Sie Lumoly Fei Sie Lumoly, Fei Sie Feybra S. Sigarlaki Guntur Manengkey Guntur S.J. Manengkey James B. Kaligis Jantje Pelealu Jantje Pelealu Juliet E.M. Mamahit Juliet M.E. Mamahit Max M. Ratulangi Noni N. Wanta Noritha Ahuluheluw Oddi R Pinontoan Odi R. Pinontoan Redsway Maramis Rivo Manopo Robert W. Tairas Robert W. Tairas, Robert W. Selvia D. Sumual Tuldenigsri H. Gigir Tuldenigsri H. Gigir, Tuldenigsri H. Yunita S. Najoan Yunita S. Najoan, Yunita S.