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Syahrial Oemry
University of Sumatera Utara
Agriculture, Biological Sciences & Forestry

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Effectiveness test entomopathogenic nematodes Steinernema sp. at the coffee berry borer pest (Hypothenemus hampei Ferr.) (Coleoptera: Scolytidae) in the laboratory. Teguh Ekapaksi Putera; Syahrial Oemry; Mukhtar Iskandar Pinem
Jurnal Agroekoteknologi Vol 6, No 1, Januari (2018)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (398.312 KB) | DOI: 10.32734/jaet.v6i1, Januari.17077

Abstract

Effectiveness test entomopathogenic nematodes Steinernema sp. at the coffee berry borer pest (Hypothenemus hampei Ferr.) (Coleoptera: Scolytidae) in the laboratory. The aimed of the research was to determine the effect of application of Steinernema sp. to control H. hampei. This research was conducted at the Laboratory of Plant Disease, Faculty of Agriculture, University of Sumatera Utara, Medan at an altitude of ± 25 meters above sea level, from November 2014 to  April 2015. The research used Complete Randomized Design (Non Factorial) with various nematodes level. They were N0 (No nematode/control), N1 (68 JI / ml), N2 (138 JI / ml), N3 (208 JI / ml). The parameters observed were the symptoms of an attack and the percentage of mortality H. hampei. The results showed that the best result to control H. hampei was showed on treatment N3 (208 JI / ml) with a percentage of mortality by 82 % .
Diversity of Insects in Cocoa (Theobroma cacao L.) Plantations with Integrated Pest Management (IPM) and Non IPM in Biru-biru District of Deli Serdang Regency Jemahaganta Surbakti; Suzanna Fitriany Sitepu; Syahrial Oemry
Jurnal Agroekoteknologi Vol 6, No 2, April (2018)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (406.969 KB) | DOI: 10.32734/jaet.v6i2, April.18007

Abstract

The cocoa farmers mostly practice conventional pest control that can be harmful to the environment, therefore integrated pest management has been developed. This research aimed to know diversity of insects in cocoa plantations affected by integrated pest management (IPM) and conventional (non IPM) techniques. This research was conducted in two villages in Biru-Biru District, Deli Serdang Regency and in Plant Pests Laboratory, Faculty of Agriculture, Universitas Sumatera Utara, Medan from June until September 2016. This research used four insect traps (sweep net, pitfall trap, light trap, and yellow trap), and repeated five times. The results showed that insects caught on cocoa plantations with IPM were 12 orders and 44 families, the highest relative density value was 27.49%, the lowest was 0.07%, the index value of insect diversity Shannon-Weiner (H') was 2.90 (moderate) and the index value of insect evenness (E) was 0.76 (high) whereas on cocoa plantations with non IPM were 10 Orders and 39 families with the highest relative density value was 25.27%, the lowest was 0.10%, the index value of insect diversity Shannon-Weiner (H') was 2.76 (moderate) and the index value of insect evenness (E) was 0.75 (high). Keywords:  biodiversity, cocoa, insects, integrated pest management
Effect of organic matter Mucuna bracteata and antagonist microbes (Trichoderma viride and Trichoderma harzianum) on the domination of Root Gall Nematode Meloidogyne spp. in potato in the field Raja Indra Rizki; Syahrial Oemry; Lisna Wita
Jurnal Agroekoteknologi Vol 7, No 2,April (2019)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (609.536 KB) | DOI: 10.32734/jaet.v7i2,April.20583

Abstract

ABSTRACT Root gall caused by Meloidogyne is one of threat for the production of potato plantation in Indonesia. Currently, biological controlling by using antagonist microbes and adding organic matters are more concerned to minimize the negative impacts for environment and human. Therefore, the objectiv of this research were to study the effect of organic matter Mucuna bracteata and antagonist microbes (Trichoderma viride and T. harzianum) on the domination of root gall nematode Meloidogyne spp. in potato in the field. This research was conducted in Plant Disease Laboratory, Agricultural Faculty of University Sumatera Utara, Medan and it was continued in the agriculture field in Karo Regency. The method used randomized complete block design non factorial with eight treatments (control, nematiside with active ingredient Karbofuran 3%,              M. bracteata, T. viride, T. harzianum, M. bracteata + T.viride, M. bracteata + T. harzianum and T. viride + T. harzianum) and five replications. The results showed that treatment Mucuna bracteata + T. viride was the best treatment to suppress the nematode’s population with 34.40 galls and final population was about 53.03.   Key words : Potato, Meloidogyne, Mucuna bracteata, Trichoderma viride,                                Trichoderma harzianum, Karbofuran 3%
Co-Authors Jemahaganta Surbakti Lisna Wita Mukhtar Iskandar Pinem Raja Indra Rizki Suzanna Fitriany Sitepu, Suzanna Fitriany Teguh Ekapaksi Putera