The effectivity test of Aloe vera leaf extract to larvae AEDES sp

Abstract

Objective: Virus control was pressed to terminate transmission chain by reducing mosquito populations. One effective alternative was biological control vector using plant extracts. The purpose of this study was to assess the lethal concentration median (LC50) and effective time to kill the larvae. Methods: Aloe vera leaf washed with water, then envy transverse with a thickness and dried in a drying cupboard. Further, the prepare to percolation A. vera leaf extract was characterized liquid extract the next in the freeze dryer. Enter 25 larvae into each glass of research that has been mixed A. vera leaf extract with various concentrations: 20 ppm; 40 ppm; 60 ppm; 80 ppm; and 100 ppm, negative control (water) and abate® (1 ppm) as a positive control. Further, to observe the number of dead larvae in the studied glass at 180, 360, 1440, and 2880 min. Results: A probit analysis was used to determine concentrations in killing larvae. A. vera leaf extract concentration was effective to kill 50% of test larvae with LC50 at 80.5 ppm with 1440 min observation time. Conclusion: A. vera extract can be larvicidal because it has the secondary metabolite compounds which toxic substances to mosquito larvae with the LC50 value of 80.5 ppm at 1440 min.