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PREFERENSI HAMA KEPINDING TANAH (Scotinophara coartata F) PADA BEBERAPA VARIETAS TANAMAN PADI SAWAH Moonik, Jandrio H.; Manueke, J.; Tarore, D.
EUGENIA Vol 23, No 2 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.23.2.2017.16780

Abstract

ABSTRACT Rice Black Bug (Scotinophara coartata F) is one of the most important pests that attack rice crops and has caused major losses. The purpose of this study is to determine the Rice Black Bug preferences in some varieties of rice crops. This research was conducted in Modomang Village, East Dumoga Subdistrict of Bolaang Mongondow Regency from November 2016 - February 2017. This research used Completely Randomized Design (CRD) with 5 treatments, namely several varieties of rice field cultivation (Ciherang, Cigeulis, Membramo, Pertiwi and Serayu).Based on the results of this study showed that the population of S. coartata pest with the largest average in Serayu varieties of 6 tails, followed by Membramo 3.75 tail, 3.5 Pertiwi, 3.5 Cigeulis and the lowest Ciherang with an average of 3.25 tailKeywords: preferences, rice black bug pest, varieties plants rice
PROSPEK PEMANFAATAN BIOPESTISIDA BAKTERI ENTOMOPATOGENIK ISOLAT LOKAL SEBAGAI AGEN PENGENDALI HAYATI HAMA TANAMAN SAYURAN Salaki, Ch. L.; Tarore, D.; Manengkey, G.
EUGENIA Vol 19, No 1 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.19.1.2013.8375

Abstract

ABSTRACT The utilization efforts of entomopathogenic bacteria as an insecticide is still being developed. One of the potential pathogen, which is developed as a source of insecticide is Bacillus spp. The study aims to determine the level of pathogenicity, and get the pathogenity spectrum isolates in the high virulences against the pests of vegetable crops to be used as a biopesticide candidates. Testing the power to kill larvae isolates of Bacillus thuringiensis against Crocidolomia binotalis, Plutella xylostella and Spodoptera litura was performed by the Method of Ohba and Aizawa. The results showed that, of 21 local isolates B. thuringiensis, there were 15 isolates could cause the mortality of > 50% of the larvae of C. binotalis, 20 isolates toward larvae of P. xylostella and 12 isolates toward larvae of S. litura. The isolates, which could potentially be selected based on the pathogenicity, the candidates will then be developed into a biopesticide for pests control of Crocidolomia binotalis, Plutella xylostella and Spodoptera litura on vegetable crops. Keywords: biopesticide, entomopathogenic bacteria, vegetable plants     ABSTRAK Upaya pemanfaatan bakteri entomopatogenik sebagai insektisida masih terus dikembangkan. Salah satu patogen yang berpotensi untuk dikembangkan sebagai sumber insektisida adalah bakteri Bacillus spp. Penelitian bertujuan untuk mengetahui tingkat patogenisitas, spektrum patogensisitas dan mendapatkan isolat yang memiliki virulensi yang tinggi terhadap hama tanaman sayuran untuk dijadikan sebagai kandidat biopestisida. Pengujian daya bunuh isolat Bacillus thuringiensis terhadap larva uji Crocidolomia binotalis, Plutella xylostella dan Spodoptera litura dilakukan dengan Metode Ohba dan Aizawa. Hasil penelitian menunjukkan bahwa dari 21 isolat B. thuringiensis lokal terdapat 15 isolat yang dapat menyebabkan mortalitas > 50 % terhadap larva C. binotalis, 20 isolat terhadap larva P. xylostella dan 12 isolat terhadap larva S. litura. Isolat yang berpotensi selanjutnya akan diseleksi berdasarkan patogenisitasnya kemudian akan dikembangkan menjadi kandidat biopestisida untuk mengendalikan hama Crocidolomia binotalis, Plutella xylostella dan Spodoptera litura pada tanaman sayuran. Kata kunci : biopestisida, bakteri entomopatogenik, tanaman sayuran
Efektivitas Cendawan Isolat Lokal Metarhizium sp. terhadap Hama Plutella xylostella Linn. pada Tanaman Kubis di Kota Tomohon (The effects of Local Isolates of the Fungus Metarhizium sp. against Pests Plutella xylostella Linn. in Cabbage Plant in Tomohon City) Manikome, Nonice; Pinaria, B. A. N.; Tarore, D.
JURNAL BIOS LOGOS Vol 6, No 1 (2016): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.6.1.2016.16259

Abstract

Abstrak             Kubis merupakan salah satu sayuran yang berperan penting bagi kesehatan manusia, karena banyak mengandung mineral dan vitamin.  Saat ini tuntutan masyarakat akan produk tanaman sayur yang berkualitas, ekonomis serta aman dikonsumsi semakin tinggi. Penelitian yang dilakukan di Desa Rurukan, Kota Tomohon ini bertujuan untuk membandingkan mortalitas larva Plutella xylostella yang disemprot dengan suspensi cendawan Metarhizium sp. isolat lokal dengan     insektisida kimia yang umumnya digunakan oleh petani kubis di Kota Tomohon. Penelitian dilakukan dalam Rancangan Acak Lengkap (RAL), dengan 3 perlakuan dan 5 ulangan. Hasil penelitian menunjukkan cendawan Metarhizium sp. isolate lokal dapat menyebabkan mortalitas larva P. xylostella sebesar 68,35%, sedangkan mortalitas pada aplikasi insektisida kimia ialah 82,35% dan pada kontrol ialah 41,30%.Kata kunci: efektifitas,  Metarhizium sp., kubis,  Plutella xylostella Abstract Cabbage is one of the important vegetables for human health, because it contains many minerals and vitamins.  The demand of qualified, economical and secured vegetables increases at the moment. The objective of this study was to compare the application effect of the suspension of local isolate Metarhizium sp. and the application of chemical insecticides that were commonly used by cabbage farmers in Tomohon city on the mortality of larvae P. xylostella. The Completely Randomized Design experiment consisted of 3 treatments and 5 replications. The application of Metarhizium sp. resulted in the mortality of larvae P. xylostella, i.e. 68.35%, whereas the application of chemical insecticides resulted in the mortality of 82.35% and the mortality in control condition was 41.30%.Keywords: cabbage, effect of Metarhizium sp.,  Plutella xylostella