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Emmy Senewe
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Agriculture, Biological Sciences & Forestry

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INTENSITAS DAN LAJU INFEKSI PENYAKIT KARAT DAUN Uromyces phaseoli PADA TANAMAN KACANG MERAH Manengkey, Guntur S.J.; Senewe, Emmy
EUGENIA Vol 17, No 3 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.3.2011.3546

Abstract

ABSTRACT   Rust leaf on red bean is major desease in the area of Tonsewer, Toure dan Tumaratas village. The aim of the study was to determine the intensity and infection rate of rust disease on red bean at  Tonsewer, Toure and Tumaratas village, The method used was survey by drawing a diagonal line at four points and one point in the center of each farm. Hence,  there were five points that  were used for sampling area for calculating the intensity and the infection  rate caused by  leaf rust Uromyces phaseoli. The result showed that red bean farm  in the village of Tonsewer, Toure and Tumaratas had been infected by rust disease caused by the fungus Uromyces phaseoli . The average of attacking intensity was 62.29% in Tonsewer. Whereas,  Toure and Tumaratas were 61.71% and 62.29 respectively. The average of  infection rate was 0.239 per unit per day in the Tonsewe. While in the Toure and Tumaratas were  0.189  and 0.208 per unit per day respectively . Keyword : Intensity and infection rate,Red Bean
PEMANFAATAN BAKTERI ENTOMOPATOGENIK Bacillus cereus TERHADAP HAMA Spodoptera litura PADA TANAMAN KUBIS Senewe, Emmy; Maramis, Redsway; Salaki, Christina L.
EUGENIA Vol 18, No 2 (2012)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.18.2.2012.3567

Abstract

ABSTRACT This study aims to obtain entomopatogenik bacteria (Bacillus cereus) as a potential biological control of pests Spodoptera litura and determine the morphological characteristics and the potential power to kill isolate B. cereus. Explored endogenous bacteria from 99 soil samples from Minahasa regency, South Minahasa and Tomohon. Bacteria were isolated by selectively using methods Ohba and Aizawa  identified by colony and cell morphology. The results showed that of the 99 soil samples obtained 141 isolates were identified as Bacillus cereus. Screening 141 isolates of the 80 isolates contained S.litura larvae that can cause deadly diseases and test larvae  >50% after 96 hours with a dose of inoculum  1.5 x 107 spores / ml. Isolates that could potentially then be selected based on the pathogenicity then be developed into a biopesticide for pest control S. litura on cauliflower and broccoli plants. Keywords: Entomoopatogenic bacteria, Spodoptera litura, cabbage plants
IDENTIFIKASI DAN UJI PATOGENISITAS CENDAWAN ENTOMOPATOGEN LOKAL TERHADAP Leptocorisa oratorius Senewe, Emmy; Manengkey, Guntur
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
PENYEBARAN POPULASI HAMA Paraeucosmetus sp. DI KABUPATEN MINAHASA TENGGARA Salaki, Christina; Senewe, Emmy
EUGENIA Vol 18, No 2 (2012)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.18.2.2012.3563

Abstract

ABSTRACT Insects Paraeucosmetus sp. Brazilians is a destructive pest of rice grain content of the rice plant to mature milk. Population and the level of this pest has spread in several locations rice production centers. This study aims to determine the spread and intensity of pest populations Paraeucosmetus sp. in rice plants by altitude in Southeast Minahasa district (District Ratatotok Ratahan and Tombatu). The study used purposive sampling method at altitude 0-300 m asl, 301-600 m above sea level and> 601 m asl. The results showed that the presence of pests Paraeucosmetus sp. spread evenly by altitude in Southeast Minahasa regency with the intensity of attacks categorized as mild attacks. Keywords: Distribution of population, Paraeucosmetus sp.
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.