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All Journal EUGENIA Jurnal Agroekoteknologi Terapan COCOS
Caroulus S. Rante
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Agriculture, Biological Sciences & Forestry Environmental Science

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VIABILITAS PUPA PARASITOID Diadegma semiclausum Hellen (Hymenoptera : Ichneumonidae) BERDASARKAN LAMA PENYIMPANAN DI LEMARI PENDINGIN R. Irsan Dj. Hutumoy; Caroulus S. Rante; Maxi Lengkong
COCOS Vol. 10 No. 8 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i6.26097

Abstract

ABSTRACT This study aims to determine the viability of the D. semiclausum parasitoid pupae on P. xylostella larvae stored in the refrigerator. The results of this study are expected to provide information about the viability of D. semiclausum parasitoid pupae which are stored in refrigerators so that they can assist farmers in carrying out biological control. The study was conducted in the area of farmers' cabbage growing in the Kakaskasen II Village, Tomohon City and the Entomology and Plant Pest Laboratory, Faculty of Agriculture, Sam Ratulangi University. The research lasted for four months from July to October 2019. The study used a survey method on farmers' cabbage flower plants. The location of the collection of P. xylostella and D. semiclausum pupae was carried out by purporsive sampling, which is collecting pupae where there are flower cabbage plants in Kakaskasen II Village. In the initial stage, pupae collection is carried out with the aim of propagation of P. xylostella pests. Furthermore, if the larvae of P. xylostella have entered the initial instar, then the collection of D. semiclausum parasitoid pupae with the aim of being released in a cage to paralyze the P. xylostella larvae. The results showed that the parasitoid pupa can survive in the refrigerator until the 34th day with viabiltas of 10.00%. Furthermore, on the 36th day until the 42nd day, the D. semiclausum parasitoid pupae were no longer found that had successfully survived into adult insects. When related to the duration of storage of the D. semiclausum parasitoid pupae in the refrigerator with pupa viability, the best pupae storage time is on the 22nd day with the percentage of parasitoid pupa viability of 75.00%. Keywords : Viability, P. xylostella, D. semiclausum, Tomohon
Serangan Parlatoria blanchardii Pada Beberapa Varietas Kurma (Phoenix dactylifera L) Di Pembibitan Mapanget Kabupaten Minahasa Utara Ricky A. Mangudisang; Jimmy Rimbing; Caroulus S. Rante; Adeleyda Lumingkewas
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 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
TINGKAT KERUSAKAN DAN PADAT POPULASI HAMA Sexava coriacea L. PADA TANAMAN KELAPA DI DESA TONGUTESUNGI KECAMATAN IBU KABUPATEN HALMAHERA BARAT Avendi Rangkaya; Maxi Lengkong; Caroulus S. Rante; 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.v2i2.32535

Abstract

ABSTRACTSexava coriacea L. is a major endemic pest that attacks the leaves of coconut trees in WestHalmahera district and can cause damage so that plants cannot produce fruit and can cause plantdeath if severe attacks. This study aims to determine the level of damage and population density ofS. coriacea pests in coconut plantations in Tongutesungi Village, Ibu District, West HalmaheraRegency. The research was carried out in the coconut plantation area of Tongutesungi Village, IbuDistrict, West Halmahera Regency. Observation of the level of damage to S. coriacea was obtainedby taking five affected leaf sheaths by cutting them to drop them on the ground, then observing thedamage to coconut leaves. The number of fronds observed was 5 times 20 sample plants per 100fronds, so that the total observed fronds were 100 times 5 observation points, namely 500 fronds.Observation of population density of S. coriacea per sample tree was determined by directlycounting the number of insects both nymphs and imago found in coconut leaf midribs. Observationof population density was 4 fronds x 20 sample trees multiplied by 5 points. The observation areawas 400 fronds. The population density of S. coriacea was determined by obtaining the averagevalue of all observational data. The results of the study on the level of damage to the samplingleaves of coconut trees attacked by S. coriacea were 65.07% - 67.32% (> 50-75%) and very heavy79.19% - 81.21% (> 75-100) the average level of damage reached 65.07% - 81.21% or the averagelevel of damage from all observation locations was 74.71%. The population density of S. coriaceamidrib at all observation locations ranged from 1.87- 3.01 individuls/midrib with an averagepopulation density of 2.45 individuals/midrib.Keywords : Sexava coriacea L., Cococ nucifera L., degree of damage, population density
PENGENDALIAN HAMA PENGGEREK BATANG CENGKIH (Hexamitodera semivelutina Hell.) MENGGUNAKAN INSEKTISIDA FIPRONIL DAN EMAMEKTIN BENZOAT DENGAN METODE INJEKSI LUBANG PADA BATANG Trisakti M. C. Manengkey; Elisabeth R.M. Meray; Caroulus S. Rante
COCOS Vol. 14 No. 2 (2022): EDISI APRIL-JUNI 2022
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i7.36421

Abstract

ABSTRACT This study aims to determine the effectiveness of the use of insecticides fipronil and emamectin benzoate by injection of stem holes in clove plants againstlarvae H. semivelutina. The results are expected to provide benefits for farmers in controllingpests H. semivelutina with fipronil and emamectin benzoate insecticides on clove plants by injection of holes in the stems. The research was conducted in a clove plantation area owned by farmers in Talaitad Village, Suluun Tareran District, South Minahasa Regency, North Sulawesi Province. The study lasted for 3 (three) months, from April to June 2021. This study used the Completely Randomized Design (CRD) method on clove plants belonging to farmers. Determination of plants to be applied to injection holes in the stem is done by looking at plants that are attacked bypests H. semivelutina by looking at the hoist holes that secrete liquid mixed with dirt on the clove plant. The results showed that the percentage of the effectiveness of the insecticide fipronil was 56%, which was not significantly different from that of emamectin benzoate, which was 40%, but was significantly different from the control by 0%. This study concluded that the use of fipronil and emamectin benzoate insecticides in the clove plantation area in Talaitad Village, South Minahasa Regency had a high enough killing power in controlling the clove stem borer H. semivelutina. The effectiveness of the application of Fipronil insecticide is 56% and Emamectin benzoate insecticide is 40% and as for suggestions in this study the use of Fipronil and Emamectin Benzoate insecticides is one way to control the pest population of H. semivelutina, besides that there are also various control methods that can be combined by using insecticides. However, its use must also be in accordance with the recommendations so as to reduce the occurrence of pollution and negative impacts on plants and the environment. Keywords : Effectiveness, Emamectin Benzoate, Fipronil, H. semivelutina.
PERSENTASE SERANGAN HAMA Brontispa longissima (Gestro) PADA TANAMAN KELAPA (Cocos nucifera L.) VARIETAS GENJAH RAJA DAN VARIETAS DALAM BIDO DI BALAI PENELITIAN TANAMAN PALMA MAPANGET Tirsa Salasa; Caroulus S. Rante; Daisy Kandowangko
COCOS Vol. 14 No. 3 (2022): EDISI JULI-SEPTEMBER 2022
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v8i8.36968

Abstract

ABSTRACTThis study aims to determine the percentage of pest attack Brontispa longissima (Gestro) oncoconut (Cocos nucifera L.) varieties Genjah Raja and varieties Dalam Bido. The results of the studyare expected to provide information or knowledge to the public regarding the percentage of pestsAttacks B. longissima on coconut so that B. longissima pests can be controlled. The research wascarried out in the coconut plantation area of the Palma Research Institute (Balit Palma) MapangetDistrict, North Minahasa Regency. The research took place from March to July 2021. The researchwas conducted in the form of a survey or by direct observation at the research site. The study wasconducted at the Experimental Garden of Mapanget on coconuts of Genjah Raja and Dalam Bidovarieties with a land area of ± 0,2 hectares for each variety, then divided into five sub-plots ofobservations spread diagonally. The things that were observed in this study included the symptoms ofthe attack, the plants that were attacked, the fronds that were attacked and the category of attack.The results showed that the percentage of B. longissima pest attack on coconuts in the Dalam Bidovariety was 20% and the Genjah Raja variety was 12.5%. The percentage of midrib that was attackedby B. longissima in the Dalam Bido variety was 17.99% and the Genjah Raja variety was 10.91%.Keyword : Percentage, B. longissima, Coconut
Co-Authors Adeleyda M. W. Lumingkewas Ahmat S. Mumba Alan Lalisang Alva Rorong Anggreini Kilala Anggreini Kilala, Anggreini Avendi Rangkaya Berty H. Assa Berty H. Assa, Berty H. Betsy A.N. Pinaria Brayen Silap Christina Salaki Daisy Kandowangko Daisy S. Kandowangko Dantje T. Sembel Dantje Terno Sembel E. Benson E. R Meray Elan K. Wowor Elisabet R.M. Meray Elisabeth R.M. Meray Emmy Senewe G. Carner Guntur Manengkey Guntur S.J. Manengkey Herens A. Parera James B. Kaligis Jantje Pelealu Jantje Pelealu Jems Ilato Jimmy Rimbing Juliet M.E. Mamahit Juliet M.E. Mamahit Jusuf . Manueke Jusuf Manueke M. Hammig M. Shepard Margono . Max M. Ratulangi Max Tulung Maxi Lengkong Merlyn Meray Mieke Walalangi Mieke Walalangi, Mieke Moulwy F. Dien Mouwy Dien Ni Made Riska Dewi Noni N. Wanta Noritha Ahuluheluw Oddi R Pinontoan Odi R. Pinontoan R. Irsan Dj. Hutumoy Rafel S. Saroinsong Rany Badjo Rany Badjo, Rany Ricky A. Mangudisang Rifal O. Manopo Sammy S.N. Rori Stela F. Pratiwi Tirsa Salasa Trisakti M. C. Manengkey