Mark David Patricio, Roldan Paul Pescos (February 2000)
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
This experimental study determined the effects of the different concentrations of the neem leaf extract to the mortality rate of mosquito larvae. The study also determined the significant difference in the mortality rate of the mosquito larvae of the different concentrations of the extracts using the One-Way Analysis of Variance, set at 0.05 alpha level of significance. The Duncan Multiple Range Test was used as post hoc multiple comparison test.
Results showed that the use of 30 percent neem leaf extract killed mosquito larvae within 48 hours from initial exposure. This concentration proved to be effective since there were significant differences in the effectiveness of the different concentr