<![CDATA[The prevention and control of dengue hemorrhagic fever can be done by using natural larvicides whose content is safer, such as kecombrang plant (Etlingera elatior). Purpose: to analyze the effectiveness of extract larvacides of kecombrang flower with various concentrations on the mortality of Aedes aegypti larvae. Methods: this research used a pure experimental method (true experimental) with a post test with only one group design. The independent variable was kecombrang flower extract (Etlingera elatior) with concentrations of 0% (control), 2%, 4%, 6%, and 8% with 5 replications and an observation time of 6 hours. The dependent variable was the death of Aedes aegypti larvae. Data analysis consisted of descriptive and inferential analysis using the One-Way Anova test followed by the Post Hoc LSD (Least Significant Difference) test. Results and Discussion: the results of the research showed that there was a significant difference in mean mortality between various concentrations extract of kecombrang flower (p=0.000) and the most effective concentration was 6%. Results: There was a significant difference in mean mortality between various concentrations extract of kecombrang flower (p=0.000) and the most effective concentration was 6%. The result of probit test showed that the LC50 value was 6.577 and LC90 was 12.113 for 6 hours. Implications: The results of this study indicated that extract of kecombrang flower can help government efforts in controlling dengue fever and can be used by the community. Conclusion: kecombrang flower extract (Etlingera elatior) was effective in being used as a vegetable larvicide.]]>
