Lucille June F. Bombeo, Victor Emmanuel C. Estilo Jr., Ronald G. Garvilles (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 study determined the effect of effectivity of chichirica and eucalyptus leaf dusts as molluscicide againsts 2.5 to 3.1 cm golden apple snails. Effectivity of the molluscicide was measured in terms of % mortality and LC50 of the snails. It was hypothesized that there was no significant difference in the effectivity of chichirica and eucalyptus in terms of % mortality and LC50 on the test organism. Golden apple snails ranging from 2.5 to 3.1 cm in diameter were handpicked from kangkong ponds and rice fields in Guimbal, Iloilo.
These results suggest that chichirica and eucalyptus leaf dusts were as effective against 2.5-3.1 golden apple snails. After the test, it was found out that the chichirica and eucalyptus have no significant differences in terms of % mortality and the LC50 . There were, however, significant differences in terms of effectiveness when they are used in different dosages. The more effective dosages were 10, 15 and 25 grams. There were significant differences in the % mortality when the treatments were applied in different time exposure. The more effective exposures were 72 and 96 hours.