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Henny V.G. Makal
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Agriculture, Biological Sciences & Forestry

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HAMA PENTING TANAMAN UBI JALAR (Ipomea batatas L.(Lamb)) DI KABUPATEN MINAHASA, MINAHASA UTARA, DAN KOTA TOMOHON Pinontoan, Odi R.; Lengkong, Maxi; Makal, Henny V.G.
EUGENIA Vol 17, No 2 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.2.2011.3532

Abstract

ABSTRACT The research aimed to identify important pests which attack sweet potato in the field. Field and laboratory research were conducted. The field research was carried out in sweet potato cropping areas in Minahasa Regency, North Minahasa regency and  Tomohon. The laboratory research was conducted in plant pests and disease laboratory, Faculty of Agriculture Sam Ratulangi University Manado to idedntify the important pest species which were found on sweet potato plants. The duration of the study was four months starting from December 2010 until March 2011. Survey method was applied with purposive random sampling.  The research was used 4 period of plant growth namely 1 month, 2 months,3 months, and 4-5 months after planting. The result showed that there were five orders identified, attacking sweet potato since the age of 1-4 months in Minahasa regency, Tomohon and North Minahasa regency. The five orders were Orthoptera, Hemiptera, Homoptera, Lepidoptera, and Coleoptera. The damage on the leaves were caused by pests coreidae, Cicadelidae, Spodoptera sp (Noctuidae), Valanga sp (Acrididae), and Oxya sp. (Acrididae), whereas on the stem was Omphisa sp (Pyralidae). Damage on the tuber was caused by Gryllotalpa sp (Gryllotalpidae), Cylas formicarius (Curculionidae) and Oryctes sp (Dynastidae). Key words : Important Pest Plant Sweet Potatoes, Ipomea batatas L.
KEANEKARAGAMAN JENIS DAN KELIMPAHAN POPULASI SERANGGA AIR SEBAGAI INDIKATOR BIOLOGIS CEMARAN AIR PADA DAS DI LANGOWAN Maramis, Redsway T.D.; Makal, Henny V.G.
EUGENIA Vol 17, No 2 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.2.2011.3529

Abstract

ABSTRACT   Aquatic insects are one of the organisms that are used in determining water contamination. Aquatic insects are sensitive to the presence of waste dumped in the river and some are resistant to such waste. One of insect resistant waste is Chironomidae. The research objective was to determine aquatic insect species, population abundance by calculating indices diversity and biotic index. Aquatic insects in the lake watershed Tondano were collected by kicks and Hand Picking. Result showed that seven orders, theerteen families and sixteen species had been identified. The number of highest aquatic insect was found in Noogan which were 13 species, whereas in karondoran were 9 species. Aquatic insects were identified including, Heptagenia sp, sp Baetis sp, Caenis sp., Hydropsyhe, sp and Chrironomidae. The highest aquatic insect populations were collected in Karondoran followed by Winebetan and Noogan. The highest diversity index of aquatic insects was found in Winebetan whereas the lowest was in Karondoran. The lowest value of the biotic index was identified in the region Noogan suggested that water in Noogan area was clean water compared to Winebetan and Karondoran. Key word: Types and aquatic insect populations
Co-Authors Berty H. Assa Christina Salaki Edi . Handoko Elisca A. Bullele Elisca A. Bullele, Elisca A. Frida Towaki Frits J. Ering Guntur S.J. Manengkey James B. Kaligis Jandrio H. Moonik Jantje Pelealu Jantje Pelealu Jimmy Rimbing Johanna M. Paath Livita C. Tamuntuan Livita C. Tamuntuan, Livita C. Max M. Ratulangi Maxi Lengkong Monica Wenas Monica Wenas, Monica Natalia Samba Oddi R Pinontoan Odi R. Pinontoan Redsway T.D. Maramis Wati Husain