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PEMANFAATAN BARINGTONIA ASIATICA DAN ANNONA MURICATA TERHADAP SERANGGA VEKTOR PENYAKIT PADA TANAMAN CABAI Salaki, Christina L.; Pelealu, Jantje
EUGENIA Vol 18, No 1 (2012)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.18.1.2012.4144

Abstract

ABSTRACT   Insect vectors disease is a major problem for chilli crop production in North Sulawesi. The effect is significant in decreasing crop production. The use of plant-derived insecticide is potential and environmentally friendly way in controlling the insect, as a form of integrated pest management. Seeds of Bitung (Barringtonia asiatica) and seeds of soursop (Annona muricata) plants can be used as an organic insectiside to control the several types of insect vectors  in pepper crop. The purpose of this study was to determine effects of the application of extracts of B. asiatica and A. muricata on the growth of insect vector (Aphis gossypii) in pepper and and determine the extracts?s lethal level.  This research was conducted in the Green House of Plant Pests and Diseases Department of the Faculty of Agriculture Unsrat Manado, for 6 months time. The research used a complete randomized design consisting of 6 treatments;  each treatment was consisted of three replications. The results showed that the percentage of dead insects assay (Aphis gossypii) increased as the concentration of the extract used increased. This study found that the concentration of soursop seed extract at 50 g / l and a concentration of 1.75% Bitung seed extract was the best to be used as a botanical insecticide in controlling the insect population vector (Aphis gossypii) in laboratory conditions. It has an effective lethal concentration for 93, 67% and 90.0% of all test insect population. Overall bioactivity increased the effectiveness of soursop Bitung seed extract as botanical insecticides. Keywords: Barringtonia asiatica, Annona muricata, Aphis gossypii, chilli plants ABSTRAK   Serangga vektor penyakit merupakan masalah utama bagi produksi tanaman cabai di Sulawesi Utara karena dapat menurunkan produksi. Salah satu sarana pengendalian yang memiliki peluang baik untuk dikembangkan dalam menunjang penerapan PHT adalah pemanfaatan bahan insektisida yang berasal tumbuhan. Buah bitung (Barringtonia asiatica) dan biji sirsak (Annona muricata) adalah jenis tumbuhan yang berpotensi untuk dikembangkan dan efektif terhadap beberapa jenis serangga vektor pada tanaman cabai. Tujuan penelitian ini untuk mengetahui pengaruh ekstrak B. asiatica dan A. muricata terhadap perkembangan dan daya bunuh terhadap serangga vektor (Aphis gossypii) pada tanaman cabai. Penelitian ini dilaksanakan di Green House Jurusan Hama dan Penyakit Tumbuhan Fakultas Pertanian Unsrat Manado, selama kurang lebih 6 bulan. Metode penelitian yang digunakan adalah Rancangan Acak Lengkap yang terdiri dari 6 perlakuan dan tiap perlakuan terdiri dari 3 ulangan. Hasil penelitian menunjukkan bahwa persentase kematian serangga uji (Aphis gossypii) meningkat seiring dengan meningkatnya konsentrasi ekstrak yang digunakan. Dalam penelitian ini didapati bahwa konsentrasi ekstrak biji sirsak sebesar 50 g/l dan konsentrasi ekstrak biji bitung 1,75 % sangat baik digunakan sebagai insektisida botani dalam mengendalikan populasi serangga vektor (Aphis gossypii) pada kondisi laboratorium, karena konsentrasi ini efektif mematikan sebesar 93,67 % dan 90,0 % seluruh populasi serangga uji. Keseluruhan bioaktivitas tersebut menambah keefektifan ekstrak biji sirsak dan buah bitung sebagai insektisida botani.  Eugenia Volume 18 No. 1  April 2012 Kata Kunci : Barringtonia asiatica, Annona muricata, Aphis gossypii, tanaman cabai
EKSPLORASI BAKTERI ENTOMOPATOGENIK PENGENDALI HAMA PLUTELLA XYLOSTELLA DAN SPODOPTERA SP. PADA TANAMAN KUBIS BUNGA DAN BROKOLI Salaki, Christina L.
EUGENIA Vol 17, No 3 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.3.2011.3545

Abstract

ABSTRACT   The research aimed to explore potential entomopathogenic bacteria as biological control agent for insect pest of P. xylostella and Spodoptera sp. in cabbage and broccoli. The indigenous bacteria were explored by taking 103 samples from location around North Sulawesi. Bacteria were selectively isolated by using Ohba and Aizawa method and then identified based on morphology. Subsequently the isolates were screened by their potency to kill test insect of P. xylostella and Spodoptera sp. The isolates were able to kill ? 50 % test insect considered  as potential for biological control. The potential isolates were then selected and would be developed  as powder and liquid bio-pesticide through large scale production. The result of the study showed that 145 Bacillus thuringiensis isolates and 202 Bacillus cereus isolates were obtained from 103 samples. The screening of the isolates based on standard test insect for cabbage and broccoli were in progress. The potential isolates would be further selected on the basis of their pathogenicity test. Based on pathogenecity test, chosen isolates will be developed as  bio-pasticide to control insect pest of cabbage and broccoli. Keywords : Exploration, entomopathogenic bacteria, biological control, Plutella xylostella, Spodoptera Sp.
POPULASI DAN INTENSITAS SERANGAN PARAEUCOSMETUS PALLICORNIS PADA TANAMAN PADI DI KABUPATEN MINAHASA SELATAN Kaparang, Christian L.; Pelealu, Jantje; Salaki, Christina L.
EUGENIA Vol 17, No 3 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.3.2011.3540

Abstract

ABSTRACT   The study aimed  to determine the population and attacking intensity of Paraeucosmetus pallicornis on rice based on the altitude in South Minahasa regency. Stratified sampling method was conducted  consisting of three strata namely 0-300 meters above sea level, >300-600 meters above sea level, and >600 meters above sea level. Sampling was collected by taking the diagonal of each 10 clump at different levels of plant age. The results showed that the highest average populations density of P. pallicornis was found  at altitude >600 m above sea level.  That was equal to 6.46 individuals per clump. In the altitude of  0-300 meters above sea level, average populations density was 6.07 individuals per clump. The lowest population was detected  at altitude >300-600 meters above sea level which was 6.03 individuals per clump. The attacking intensity of P. pallicornis was the highest at an altitude of 0-300 meters above sea level that is equal to 25.87 % per clump, followed by the altitude  >300-600 meters above sea level which was 24.12 % per clump.  The lowest was an altitude of >600 meters above sea level 23.77 % which was per clump. Keywords: rice, Paraeucosmetus pallicornis
ISOLASI DAN KARAKTERISASI BAKTERI INDIGENOUS (BACILLUS CEREUS FRANK.) SEBAGAI AGENSIA PENGENDALI HAYATI HAMA KUBIS Salaki, Christina L.
EUGENIA Vol 17, No 1 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.1.2011.94

Abstract

B. cereus strains were isolated from three district of North Sulawesi. The B. cereus strains are potentialindigenous bacteria for biological control agent against P. xylostella. The B. cereus strains were isolatedusing Ohba and Aizawa methods. Two hundred and two isolates putatively were isolated and identifiedas member of species B. cereus. Subseguently, representing isolates were selected to be screened forthe ability to kill P. xylostella. The screening test was conducted by using leaf depped methods with theconcentration of 1,22x108 spore/ml. The potential to kill test insect was assessed by mortality value. Theresult indicated that 10 isolates out of 15 of could produce mortality of insect from 50 to 100% afterexposure of 96 hours. It was confirmed that based on symptoms produced as well as bacterialcharacteristics reisolated from cadaver of test insect, the death of the test insects was certainly causedby application of bacterial isolates. It could be concluded that indigenous bacterial isolates identified tobe member of B. cereusare potential for biological control agent against P. xylostella. ABSTRAKUntuk memperoleh bakteri yang berpotensi sebagai agensia pengendali hayati hama Plutela.xylostelladilakukan isolasi dan karakterisasi bakteri indigenous. (Bacillus cereus) yang diperoleh dari sampeltanah yang berasal dari tiga kabupaten di Sulawesi utara. Bakteri diisolasi dengan metode Ohba danaizawa. Dari 103 sampel tanah yang digunakan dapat diperoleh 202 isolat yang diidentifikasi sebagaianggota spesies B.cereus. Sebanyak 15 isolat dipilih untuk mewakili seluruh isolat dalam sereening ujikemampuan membunuh P.xylostella. Pengujian dilakukan dengan metode pencelupan daun (leafdipped method) pada konsentrasi 1,22x108 spora/ml. Kemampuan membunuh serangga uji dinyatakandengan nilai mortalitas setelah pendedahan selama 96 jam. Ternyata hanya 10 isolat yang dapatmenimbulkan mortalitas serangga uji dengan kisaran 50%-100%. Berdasarkan gejala penyakit yangmuncul, karakteristik bakteri hasil reisolasi dari cadaver serangga mati menunjukkan bahwa kematianserangga uji dipastikan disebabkan oleh isolat bakteri yang diberikan. Disimpulkan, bahwa isolat bakteriindigenous anggota spesies B.cereus yang diperoleh berpotensi untuk dikembangkan menjadi kandidatagensia pengendali hayati bagi serangga hama kubis P.xylostella.
JAMUR YANG BERASOSIASI DENGAN PLUTELLA XYLOSTELLA L. PADA SENTRA TANAMAN KUBIS DI KOTA TOMOHON DAN KECAMATAN MODOINDING Soewarno, Waywind; Pinaria, Betsy A.N.; Salaki, Christina L.; Pinontoan, Odi R.
COCOS Vol 3, No 6 (2013)
Publisher : COCOS

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Abstract

ABSTRACTThe aims of the research is to identify the fungi associated with the death P. xylostella larvae. The research was carried out during 3 (three) months i.e. started from August until November 2012, which is located in the Tomohon City and District of Modoinding. Working procedures of the study include: (1) a collection of the death P. xylostella larvae by taking samples along with cabbage leaves, (2) identification of fungi associated with dead P. larvae xylostella through macroscopic and microscopic observations and isolation on PDA + AB medium by direct plating and dilution. The results showed that there are five species of fungi of the death P. xylostella larvae, namely Hirsutella sp. , Metarhizium sp, Penicillium sp., Fusarium sp., and Aspergillus sp. The species of fungi Hirsutella sp. and Metarhizium sp. including entomopathogenic fungi, while Penicillium sp., Fusarium sp., and Aspergillus sp. may be opportunistic or saprophyte.Keyword: Dead P.xylostella larvae, entomopathogenic fungi, opportunistic fungi
INSIDENSI DAN SEVERITAS PENYAKIT BERCAK DAUN PADA TANAMAN KACANG TANAH DI DESA LOWIAN DAN LOWIAN SATU KECAMATAN MAESAAN KABUPATEN MINAHASA SELATAN Rori, Sammy S.N.; Manengkey, Guntur S.J.; Salaki, Christina L.; Rante, Caroulus S.
COCOS Vol 4, No 6 (2014)
Publisher : COCOS

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Abstract

ABSTRACTSammy Sem Niclas Rori. Incidence and Severity of Leaf Spot Disease on Peanut Plants in the Lowian and Lowian One Village, Subdistrict Maesaan, District of South Minahasa. Under Guidence Ir Guntur S.J. Manengkey, MP as chaiman, Prof. Dr. Ir Christina L. Salaki, MS and Ir. Caroulus S. Rante, MS as member.This study aimed to determine the incidence and severity of leaf spot diseases on peanut plants. The experiment was conducted in the Lowian and Lowian One, Maesaan the District of South Minahasa Regency. The duration of the study which lasted for four months from September to December 2013. Research field using survey methods that further observation and communication with the peanut farmer. Furthermore, the distribution plots five sample plots in two different villages to be observed regarding the incidence and severity of disease caused by the cause of the peanut plant. In the laboratory microscopic observation of the shape of conidiophores of the fungus causes leaf spot disease. Things were observed in this study are: (i) symptoms of infected plants leaf spot disease-causing pathogens, (ii) the incidence and severity of disease. Observations in the field showed that the symptoms appear on peanut plants after infection by a disease that causes patches of chlorosis appear later developed into necrosis with an irregular round shape up. This phenomenon is located on the lower surface of the leaves and the leaves, leaf spot color ranging from light brown to brown or yellow halo blackish necrosis.Keywords: incidence, severity, leaf spot disease
JENIS-JENIS SERANGGA YANG BERASOSIASI PADA ECENG GONDOK DI DANAU TONDANO Kumolontang, Geyby .,; Tulung, Max .,; Salaki, Christina L.
AGRI-SOSIOEKONOMI Vol 13, No 3A (2017)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/agrsosek.13.3A.2017.18059

Abstract

This study aims to see the abundance of species and populations of insects found in water hyacinth vegetation in Tondano Lake.  This research was conducted at Entomology and Phytopathology Laboratory of Agriculture Faculty at Sam Ratulangi University in Manado and on the coast of Tondano Lake. This study was conducted for 3 months. The research method used purposive sampling method or intentional intake at 5 point location of hyacinth vegetation in Tondano Lake. Determination of Research Location is based on the amount of area that has been covered by water hyacinth on the coast of Tondano. On each location has been determined and then made a plot of sampling area of 10 x 10 m. The results showed that the types of insects found in the hyacinth vegetation in Tondano Lake were from family: Culicidae, Muscidae, Phoridae, Sepsidae, Drosopilidae, Apdididae, Anthomyidae, Carabidae, Dolichopodidae, Braconidae, Stratiomiidae, Ichneumonidae, Cecidomidae, Bombylidae and Sphingidae. Insect populations fluctuate in each observation. The existence of insects found in hyacinth vegetation in Tondano Lake is generally caused by the close distance between water hyacinth with rice fields and plantations and the existence of decaying vegetation that can be a good habitat for these breeding insects, in addition there are also enemies naturally found due to its activities in the search for prey. 
SERANGAN HAMA PENGGEREK BATANG CENGKEH HEXAMITHODERA SEMIVELUTINA HELL. DI DESA KUMELEMBUAI KABUPATEN MINAHASA SELATAN Tumanduk, Gladys M.; Pinaria, Betsy A.N.; Salaki, Christina L.
COCOS Vol 1, No 4 (2017)
Publisher : COCOS

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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.
IbM Pengendalian Hama Terpadu (PHT) pada Tanaman Sayuran di Kota Tomohon Salaki, Christina L.; Dumalang, Sherlij
Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 2, No 2 (2017): Maret
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.957 KB) | DOI: 10.22146/jpkm.27281

Abstract

An integrated pest control on vegetables crops in the fields,  is one of the control method to suppress the insect pest population , therefore farmer do not depend on the chemical controls that have negative effect both on the environment and human as well as animal.  The science and technology program for communities [IbM] aim to get a package of integrated pest control technology that is enviromentally friendly and it is derived from Indonesian microbial resources to support sustainable agriculture system .  To achieve  the goal, the program  implemented  through counseling, plot demonstration and field work.  These activities provided motivation  to farmers to be able to use biological agents combined with culture control to suppress population of insect pest and vegetables through the extension activities and the plot  demonstrations.  The IbM activity gave benefit to farmers by transfer knowledge through extension methods on how to get and use biopesticides with its theory and it can be directly practiced by farmers in the form of a plot demonstrations.
IbM Pengendalian Hama Terpadu (PHT) pada Tanaman Sayuran di Kota Tomohon Salaki, Christina L.; Dumalang, Sherlij
Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 2, No 2 (2017): Maret
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpkm.27281

Abstract

An integrated pest control on vegetables crops in the fields,  is one of the control method to suppress the insect pest population , therefore farmer do not depend on the chemical controls that have negative effect both on the environment and human as well as animal.  The science and technology program for communities [IbM] aim to get a package of integrated pest control technology that is enviromentally friendly and it is derived from Indonesian microbial resources to support sustainable agriculture system .  To achieve  the goal, the program  implemented  through counseling, plot demonstration and field work.  These activities provided motivation  to farmers to be able to use biological agents combined with culture control to suppress population of insect pest and vegetables through the extension activities and the plot  demonstrations.  The IbM activity gave benefit to farmers by transfer knowledge through extension methods on how to get and use biopesticides with its theory and it can be directly practiced by farmers in the form of a plot demonstrations.