Abstract:
Myzus persicae Sulzer is a major pest in pepper. Therefore, it is needed the alternative control that is safer and environmentally friendly. One of them is botanical insecticide with sweet flag rhizomes. This study aimed to obtain the right concentration of sweet flag rhizome extract (Acorus calamus L.) to control the pests of peach aphids M. persicae Sulzer in pepper plant. This research was conducted at the Laboratory of Plant Pest and Technical Implementation Unit (UPT) Experimental Farm Faculty of Agriculture, University of Riau for 3 months, from February to April 2012. This study has been conducted using a completely randomized design consisted of 6 treatments (some concentration of sweet flag rhizome extract) and 4 replications in order to obtain 24 experimental units. Each trial consisted of 30 individuals M. persicae Sulzer. Data obtained from the observations were statistically analyzed using analysis of variance, followed by Duncan's New Multiple Range Test (DNMRT). The results of some concentrations of sweet flag rhizome extracts (Acorus calamus L.) test towards the aphids M. persicae Sulzer showed that concentrations 50 g/l water of sweet flag rhizome extract (5%) is an appropriate concentration which is in the range of lethal concentration (LC) 95 that is 4,84-20,72% with total mortality 90,83%.
