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Christina Salaki
Universitas Sam Ratulangi
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Environmental Science Health Professions Immunology & microbiology Library & Information Science Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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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
SERANGAN HAMA PENGGEREK BATANG CENGKEH Hexamithodera semivelutina Hell. DI DESA KUMELEMBUAI KABUPATEN MINAHASA SELATAN Gladys M. Tumanduk; Betsy A.N. Pinaria; Christina L. Salaki
COCOS Vol. 8 No. 5 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.15700

Abstract

ABSTRACKCloves (Syzigium aromaticum. L) is a cash crop that has a high economic value in Indonesia. One type of plant pests that attack plants clove is the clove stem borer (H. semivelutina).The study aims to determine the clove stem borer attack in the village of Kumelembuai. The research was carried on in the village Kumelembuai for 3 months from October to December 2016. The research was conducted by survey method. Samples were observed total 15 trees randomly selected plants. Observations were made 2 weeks for 3 months. Things are observed number of trees and the number of hoist stem borer are active and which are inactive and the percentage of stem borer attack cloves begin the first observations until the sixth observation. The results showed there were 13 trees affected with 55 holes hoist pests which are no longer active in the garden Wukir, in the garden there are 11 trees affected Maruasey and 43 holes that are no longer active. The highest percentage of attacks seen in the garden Wukir by 73.33% compared with the number of attacks in the garden Maruasey percentage with 33.33% total percentage of attacks.
JENIS DAN POPULASI LALAT BUAH Bactrocera spp. (DIPTERA : TEPHRITIDAE) BERDASARKAN WAKTU TANGKAP PADA AREAL TANAMAN CABAI MERAH DI KOTA TOMOHON Jantje H. Manangka; Prof.Dr.Ir. Christina L. Salaki, MS.; Ir. Caroulus S. Rante, MS
COCOS Vol. 8 No. 5 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.15797

Abstract

ABSTRACTThis study aims to determine the species and population of fruit flies Bactrocera spp. based on different catch time in red chili area at village of Kakaskasen II, Tomohon Utara Subdistrict, Tomohon City. The design used was Randomized Block Design (RBD) which consisted of three treatment time of catching that is treatment A, time period of catch at06.00-12.00; Treatment B, the catch time period at 12.01-18.00, and treatment C, the catch time period at 19.01-05.00. The type of fruit fly is identified to the species level. The population of fruit flies collected were analyzed by analysis of variance (ANOVA) and if the treatment obtained was significantly different then it would be followed by BNJ test.The results showed that the types of fruit flies caught using steiner type traps with methyl eugenol attractants based on the treatment of catch time during observations 1 to 4 in the chili plant area were seven species, namely Bactrocera dorsalis (Hendel), Bactrocera umbrosa (Fabricius), Bactrocera Papayae Drew & Hancock, Bactrocera synnephes (Hendel), Bactrocera carambolae (Drew & Hancock), Bactrocera Facialis (Coquillet)), and Bactrocera sp. The catch time for the highest number of trapped fruit flies is found at the treatment at 06.00-12.00 and12.01-18.00.Key words: Fruit Fly Types, Methyl Eugenol (Petrogenol), Catch Time
Pemanfaatan Ekstrak Daun Pepaya (Carica papaya L.) terhadap Hama Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) Christian F.A. Rumende; Christina L. Salaki; James B. Kaligis
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32482

Abstract

ABSTRACTOne of the pests that are detrimental to maize farmers today is the armyworm (S.frugiperda) which attacks maize crops. In general, farmers use chemical insecticides whichare effective but very dangerous to the health of the body and the environment. Carica papayais a plant whose leaves can be used as a botanical insecticide because the secondarymetabolite compounds in these plants can be used as insecticides. The purpose of this studywas to determine the effect of papaya leaf extract on the mortality of S. frugiperda larvae.The method used is data analysis in the form of LC50. In this test using a solutionconcentration of 100 grams/L, 300 grams/L, 500 grams/L, and 700 grams/L with fourrepetitions. The results of the observation of mortality from 24 hours to 96 hours aftertreatment with a solution concentration of 700 grams/L were the solutions that had thegreatest mortality, namely 100% and from the LC50 calculation, the value was 35.457%.This is due to the content of papaya leaf extract which is gastric poison, respiratory poisonand contact poison that can kill S. frugiperda larvae. Papaya leaves can be an alternative toinsecticide for controlling the pest of S. frugiperda.Keywords: Botanical Insecticide, LC50, Mortality.
Co-Authors Anggreini Kilala Anggreini Kilala, Anggreini Ariyane O.S. Siwu Assa, Berty Bastian P. Wowiling Bastian P. Wowiling, Bastian P. Betsy A.N. Pinaria Carla F. Kairupan Caroulus S. Rante Christian F.A. Rumende Christian L. Kaparang Daisy S. Kandowangko Dantje T Sembel Dantje Tarore Elisabet R.M. Meray Emmy Senewe Erwin G Kristanto Evie Paendong Gladys M. Tumanduk Guntur S.J. Manengkey Hans Huijbregts Henny Makal Henny Makal, Henny Henny V Makal Henny V.G. Makal Herlina I. S. Wungouw Herlina Wungouw Inri Wowor Ir. Caroulus S. Rante, MS Jackson Fraky Watung Jackson Watung Jackson Watung James B. Kaligis Jantje H. Manangka Jantje Pelealu Jantje Pelealu Jaya, Hendra K. Jesmandt Situmorang Jesmandt Situmorang Jimmy Rimbing Juliet E.M. Mamahit Juliet M.E. Mamahit Juliet M.E. Mamahit Krisen, Jeane Krisen Kumolontang, Geyby ., LANGKAH SEMBIRING Langkah Sembiring Makal, Henny V Makal, Henny V. Makkiah, Makkiah Manginstar, Christian O. Max ., Tulung Max Tulung Montong, Vivi B Montong, Vivi B. Moulwy F. Dien Natalia Samba Niken Handayani Niken Handayani Niken Satut Nur Handayani Noni N. Wanta Nurdjannah J. Niode Oddi R Pinontoan Odi R. Pinontoan Rafel S. Saroinsong Redsway Maramis Rivo Manopo Rondonuwu, Frans. B. Sammy S.N. Rori Sherlij Dumalang Threis Umboh Trina E. Tallei, Trina E. Tuldenigsri H. Gigir Tulung, Max ., Vera E. Tangkilisan Washliyah, Sitti Waywind Soewarno Yukiko Susandi Zainudin Limbanadi