Authors: Cherrgie Mae B. Caong1
, 1Darlene S.J. Butalid
, 1Milagrosa L. Salapuddin-II
, 1Angel Charm A. Sarino
, 2Bryan L. Bitantos
, 2Rosienie D. Gallardo
, 3Reybhoy A. Ramos
, 3Leziel Digang
1MSU-BC Senior High School Deparment, 2Environmental Science Department, College of Forestry and Environmental Studies, Mindanao State
University - Buug Campus, 3College of Agriculture, Mindanao State University - Buug Campus
Email: bryan.bitantos@msubuug.edu.ph
ABSTRACT
Organic insecticides are a non-chemical approach for pest management. They are composed of organic ingredients that are environment
friendly and inexpensive. Organic insecticides are now widely used to control pests in the household level. One of the ongoing problem in the
household that needs to be dealt with is cockroach infestation. To control this ongoing problem, the researchers conducted a study to determine the effects of different organic insecticides namely: chili fruit extract (Capsicum annuum), garlic extract (Allium sativum), onion extract (Allium cepa), and tobacco extract (Nicotiana) on the mortality rate of American cockroaches (Periplaneta americana). The cockroaches were exposed to the organic insecticides for one hour. Analysis of Variance (ANOVA) for one-way classification was used to find out if
there is a significant difference on the effects of the different organic insecticides on the mortality rate of cockroaches. The Duncan’s Multiple
Range Test (DMRT) was administered after solving the ANOVA to determine the significant differences of the insecticides from each other.
The findings obtained in the study were the following: (1) the garlic extract obtained the highest average mortality rate of 4.33 followed by
tobacco extract with an average mortality rate of 3.33, chili extract with 1.67 and onion extract with 0 average mortality rate; (2) the effects of
the different organic insecticides on the mortality rate of the cockroaches are significantly different from each other; and (3) having obtained
the highest average mortality rate of cockroach, garlic extract is the most effective to kill cockroaches among the three organic insecticides.
Keywords: chili, cockroaches, garlic, organic insecticides, onion, tobacco