Lilluck Flotildes Alacapa, Michelle Lasola Logarta, Jennica Delmo Orata (February 1999)
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
Different plant parts of Anona squamosa (atis), specifically the leaves and bark were collected and were tested for their insecticidal properties against the local mosquito.
Nine containers covered with fine net were prepared. Ten mosquitoes were assigned to each of the nine containers. The containers were then divided into three. The first three containers were the first replicates, and the remaining composed the second and the third replicates.
The mosquitoes were treated with the extracts of the different plant parts of Anona squamosa and a commercial insecticide.
Brand X insecticide killed the most number of mosquitoes in a matter of 30 minutes showing a percent mortality rate of 100%. Between the two plant extracts, the leaves extract (40%) has greater mortality rate than the bark extract (33.33%). More mosquitoes are eliminated by the leaves extract compared to that of the bark extract.