Uji Efikasi Beberapa Insektisida Nabati Terhadap Ulat Penggerek Tongkol Jagun…

This study aims to obtain an effective plant-based insecticide to control corncobs (Helicoverpa armigera Hubner). The research was conducted at the Laboratory of Plant Pest Faculty of Agriculture Universitas Riau Campus Bina Widya km 12.5 Pekanbaru. The study was conducted for three months from March to May 2016. This research was conducted by using Completely Randomized Design (RAL) with 5 tre…