Abstract
Sitophilus zeamais M. was a warehouse pest that attacks corn kernels in storage. S. zeamais pest control commonly used fumigant insecticides that used still has many disadvantages such as food safety impacts, environmental pollution and pest resistance, so that a safe alternative to control was needed, one of which was using noni seeds. This research was aimed to obtain a dose of noni seed flour that was effective to S. zea mays corn powder pest mortality.The research was conducted at the Laboratory of Plant Pest, Faculty of Agriculture, University of Riau from March to May 2018.The treatment used was the dose of noni seed flour 0 g.100 g-1 corn, 2 g.100 g-1 corn, 4 g.100 g-1 corn, 6 g.100 g-1 corn, and 8 g.100 g-1 corn. This research was conducted experimentally using a completely randomized design (CRD) with 5 treatments and 4 replications. Based on the results of the research, the dose of noni seeds 8 g.100 g-1corn had not been effective in controlling S. zeamais with mortality of 52.50%, shrinkage of corn seed weight by 8.78% and an increase in individuals by 8.20. Keywords: Morinda citrifolia L., Sitophilus zeamais M., Zea mays
Highlights
Jagung (Zea mays L.) merupakan salah satu jenis tanaman biji-bijian yang digunakan sebagai bahan pangan, pakan, dan bahan baku industri
This research was aimed to obtain a dose of noni seed flour
that was effective to S. zea mays corn powder pest mortality
Summary
Penelitian ini dilakukan secara eksperimen dengan menggunakan rancangan acak lengkap (RAL) non faktorial yang terdiri dari 5 perlakuan, setiap perlakuannya diulang 4 kali sehingga diperoleh 20 unit percobaan. 2 seri, 20 unit percobaan pada seri pertama digunakan untuk pengamatan waktu awal kematian S. zeamais, lethal time 50 (LT50), mortalitas harian dan mortalitas total. 10 ekor imago S. zeamais yang terdiri dari 5 ekor imago jantan dan 5 ekor imago betina, dengan jumlah biji jagung pada setiap perlakuan sebanyak 100 g/toples. Data mortalitas harian yang diperoleh dianalisis secara deskriptif dan ditampilkan dalam bentuk grafik, sedangkan data lainnya mortalitas total, lethal time (LT50), pertambahan individu dan penyusutan berat biji jagung dianalisis secara statistik yakni analisis sidik ragamyang berpengaruh nyata diuji lanjut denganbeda nyata terkecil (BNT) pada taraf 5%
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