Influence of extracts of leaves of yam bean (Pachyrrhizus erosus) against the death of the larvae of aedes Aegypti sp

The mosquito Aedesaegypti is the vector of the disease dengue fever Dengue (DBD) which until recently was a public health problem in Indonesia. One of the efforts made in the eradication of the vector control was via DBD naymuk larvae of Aedesaegypti by using larvasida. Larvasida biodiversity derived from plants has the potential to control mosquito larvae, besides its use is secure against man. One of the biological larvasida that can be used is from the leaves of Yam bean (Pachyrrhizuserosus). From previous research that the leaf extract Yam bean (Pachyrrhizuserosus) could be mosquitos Anopheles aconitus larval lethal with a concentration 2.8771% at LC50. This research aims to know the sejauhmana leaf extract Yam bean (Pachyrrhizuserosus) can be deadly mosquito larvae Aedesaegypti in various levels of concentration. As a variable in this study was the death of the larvae of the mosquito Aedesaegypti with free variables is a variation of the concentration of extract of leaves of Yam bean (Pachyrrhizuserosus). Sample research is the larvae of the mosquito Aedesaegypti in the instar III/IV relatip stable of outside influence as much as 30 larvae for each treatment. The treatments in this study by using aqueous leaf extract jicama with the respective concentrations of 2.0%, 4.0%, 6%, 8% and 10%, with 4 repetitions and a control without treatment. Analysis of the statistics used in this research is analisaregresi through the program SPSS 17 probit for windows. From observations of the larva, the number of known dead after emblazoned Yam bean leaf extract at concentrations of 2%, the highest 4 tails (16%) and the lowest was 2 tails (8%); the highest at 4% is the 7 tail (28%) and the lowest 4 tails (16%); the highest concentrations of 6% is the 12 tails (48%), the lowest 7 tail (28%); the highest concentrations of 8% is 21 tail (84%), the lowest 17 tail (68%); the highest at concentrations of 10% are 25 tails (100%) 21, the lowest tail (84%), at konrol there is no death. Analysis of examination results of probitmenunjukkan effective concentration on LC50, LC90 and LC95 with confidence interval (SK) acceptable i.e. 95%, respectively was 6.314%, and 10.104 11.179% with upper and lower limits. From this analysis biased note, the higher the concentration of extract of leaves of Yam bean, then the higher death rate larva Aedesaegyptisampai finally reached the maximum limit of the larva mortality rate.